Andy White Anthropology
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Draft Interim Report of 2015-2018 Archaeological Work at 38FA608

1/28/2020

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Over the last few months I have completed a draft of an interim report of the 2015-2018 work I've been directing at 38FA608. As explained in the report, it is mainly a descriptive effort that provides basic details about the various stages of the work we've undertaken, the excavation methods employed, the units excavated, and the materials recovered so far. The report discusses the initial discovery and documentation of the site, the 2017 and 2018 seasons of field school, and the backhoe trenches that were excavated as part of the Big Broad Trenching Project.

If you've followed what's been going on at the site through my blog and the videos, you'll find much of what's in the report to be familiar. There are things you haven't seen, also: descriptions of each feature, for example, images of all the projectile points recovered so far, and some images of the prehistoric pottery. I also report the four radiocarbon dates that have been obtained so far and the single OSL date.

What you won't find in this report is analysis. The report is written, rather, to present and organize information about the excavation work at the site so that analysis of the materials and deposits can be undertaken. Those analyses are what's next.

This is a draft report, meaning that the information in it is subject to change. I have been through the contents several times, but there are certainly still errors and omissions. I will make supporting documents (including raw data) available in the "Documents" section of the Broad River Archaeological Field School website as I have time. 

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Field School 2020

11/13/2019

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I'm happy to announce that my archaeological field school is on the books again for the Spring 2020 semester. Assuming everything goes according to plan, I'll be taking students to excavate at 38FA608 each Friday next semester, beginning in mid January and running through April. I plan to once again produce weekly videos and have the students write blog posts.
I have several goals for the 2020 season. First, I plan to continue straightening "the wall" by excavating a Unit in the vicinity of Unit 13 (excavated in 2018). Unit 13 gave us our first real look at the Savannah River component of the site, producing several points in situ and a complex of deposits that included a shallow pit feature and several possible posts. At this point we know the stratigraphic location of the Savannah River component, at least in the "wall" portion of the site.  I'm hoping that an additional unit will help boost our sample of Late Archaic diagnostics as well as recover more detailed information about the components pre- and post-dating the Savannah River component. 

Second, I will continue work in the block. With removal last season of the two discrete features exposed in the floors of Units 4 and 6, we're set to continue pushing downward. One of the features was radiocarbon dated to Savannah River times, and we have a Savannah River point from the screen. While it's possible that the Mack and Savannah River components are somewhat mixed, the dated feature suggests we may already be below the Late/Terminal Archaic Mack component. It's possible that we'll hit a relatively heavy Savannah River component to match was discovered in the wall unit. It's also possible that the Savannah River component in the block is relatively light, and perhaps already mostly or partially removed. Lower than the Savannah River component, the next component that we know exists at the site is Middle Archaic in age (Guilford). It will be interesting to see what comes next in the block.

Three of the block units (Units 3, 5, and 12) are still above the Mack component. Work will continue in one or more of those units.

Thirdly, we will be searching for the Early Holocene component at the site. Two Early Archaic projectile points have been recovered from the site vicinity: one from the dirt road and one from the disturbed area immediately adjacent to where we have been excavating. Given that we know Middle Archaic materials are deeply buried at 38FA608, the presence of Early Archaic diagnostics suggests that buried Early Archaic deposits exist there also. We may have first encountered these with the excavation of Unit 11 after the close of the 2018 season. I applied for and received an internal grant from USC to fund a professional excavation in the "basement" area of the site to search for Early Holocene and/or Late Pleistocene deposits. That excavation will be concurrent with the field school.

I would like to once again thank those that contributed to the GoFundMe campaign I organized to support the 2019 season of the field school. As I have already discussed, that field school didn't happen. With the blessing of the donors, I retained the money donated for the 2019 effort. I have used a portion of the money to support the creation of 3D models of the lithic tools we've recovered from the site so far (many of the models are available on this page of the Broad River Archaeological Field School website), but the large majority will be used to support this field school. I plan to use the money to hire two people as staff and purchase the requisite expendable supplies.

Stay tuned!
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Update: Friday Night Omnibus News Dump Edition

1/25/2019

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It has been a busy few weeks. As usual, I have more topics than time. At this point, I'm going to just accept that my blog sometimes functions as an open access journal. Here is the bullet point version of what I've been up to. We'll do art first, then archaeology.

Two Crows Named "Desire"

Flavia and I finished the crows we were making for each other. I love the one she made me (it's going to go in my office), and I'm pretty happy with what I made for her. Here are some pictures of my "Desire." There's a lot I could say about it, but it's Friday night and time to move on.
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Me and Flavia with our crows.

The Jasper Artist of the Year Is . . . Not Me

As I wrote in December, I was one of three finalists nominated for Jasper Artist of the Year (in the visual arts category). The awards ceremony was last Friday. I did not win the award: that honor went to Trahern Cook. I met some new people, drank some wine, and had a good time (the picture above was taken there). Congratulations to all the winners!

New Pieces Over the Holidays

In addition to "Desire," I completed several other smallish pieces over the holiday break. 
  • "Left Behind" is small rabbit made mostly from debris I collected in Gainesville, Florida, at last spring's TAG conference. 
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  • "Pretender" was a wedding gift for my friend Whitney and her new husband (congratulations and sorry I haven't mailed it yet!).
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  • "Crow" was a quickie. As promised in my post about "Kiss Goodbye," I'm looking to move on. I threw out my rule book and I really liked the result. The king is dead, long live the king.
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Fact Bucket Videos: Six Down, One to Go
I'm still working to finish up editing the student videos from my Forbidden Archaeology class last semester. I finished one on Atlantis last week and one on pyramids today. You can find them on my YouTube channel, along with videos about my archaeological fieldwork and my art.

New Grant For Collections Work

I'm happy to announce that I have received grant monies from the Archaeological Research Trust to continue inventorying and preliminary analysis of chipped stone projectile points from the Larry Strong Collection. You may remember me writing about working with the Early Archaic materials a while ago. I'm still working with those (more on that later), but now I'm going to move on in time and process the Middle and Late Archaic stuff. Part of the rationale is that I'll be dealing with those time periods in the materials we've been excavated at the field school.

South Carolina Archaeology Class: We're Making a Movie

I'm teaching South Carolina Archaeology (ANTH 321) this semester. The class is bigger than in years past. That's good from an enrollment standpoint, but a challenge from a teaching standpoint. In the spirit of experimentation, I decided to build in a class video project. We'll be making a video attempting to showcase the archaeology of this state. I've divided the students up into groups and given them topics (mostly organized chronologically) that they're responsible for. They're going to research their topics and develop proposals about what issues, artifacts, sites, and people should be included the video. Then we'll take it from there.

Go Deep!

Today I submitted  a grant proposal for systematic exploratory work on the deep deposits at 38FA608 (the field school site). We know now several things about the sediments below the Middle Archaic zones: (1) they're deep; (2) they're Late Pleistocene/Early Holocene in age; and (3) they contain artifacts. I don't believe I've mentioned it publicly, but I submitted a sample for OSL data from the deepest stratum we've documented so far (about 5m below the original surface) and it returned a result around the Last Glacial Maximum.  Also, we've found an Early Archaic Kirk point in a disturbed part of the site. What all that means is that the landform did indeed exist at the end of the last Ice Age and (minimally) Early Archaic peoples were using it. In other words, there's a really good potential for some very high integrity buried archaeology there. Fingers crossed. 

Other News

In other news . . . our 2003 4Runner finally suffered a terminal injury. And I'm tearing out our rotted deck. And I've started working a rabbit sculpture that's big enough to sit on. It will have a tractor seat. And a gear shift. And a dashboard.

And now you are up to date.
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"Finding the Family" Fieldwork Complete (Mostly)

6/2/2018

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I spent this week along the Broad River with colleagues from the South Carolina Heritage Trust and some of my own students doing fieldwork associated with a research grant I received from USC. The grant, titled "Finding the Family in South Carolina Prehistory," was focused on exploring the potential for buried archaeology in alluvial landforms in the vicinity of 38FA608. Several seasons of hand excavations there have revealed about 3 m of stratified cultural deposits spanning at least 6000 years, all protected within a sandy "natural levee" deposit.

I believe I've mentioned the grant before, but only in passing. In brief, the strategy was to use a backhoe to excavate a series of short trenches spaced about 100 m apart along about a mile of deposits. The sediment sequences revealed in the walls of those trenches provide information about how the alluvial landscape along this section of the river formed and developed and which areas have (or have the potential to contain) well-preserved archaeological sites. We cleaned, drew profiles, described sediments, and photographed a wall of each trench. Carbon was scarce, but I obtained a few small samples from buried strata that I think will help me construct a preliminary depositional chronology. I'm most interested in locating sites with good potential for preserving evidence of family- and group-level behaviors in the Early and Middle Holocene (hence the name of the grant), but I want to be able to tell the rest of the story as well.

The weather was not our friend early in the week. We got soaked by heavy rain all day on Monday, and intermittently on Tuesday afternoon. The remainder of the week was better, perhaps even relatively pleasant by the standards of South Carolina in late May. 

It was a hectic week, but we got everything done and learned a tremendous amount in a short time. I owe a huge debt of thanks to Sean Taylor at the South Carolina Heritage Trust for kicking in resources (both human and machine) and expertise at his disposal. I'm also thankful for the continued generosity and hospitality of the landowner. The analysis of the materials and information will begin immediately, starting with cleaning/cataloging the artifacts we collected, digitizing the profiles, and selecting samples for radiocarbon dating, etc. I still have a day or so left in the field to map in some trench locations and take a few final notes. I'll write about it as I have time, and will produce one or two videos showing what we did. In the mean time, I hope you enjoy some photos from our week and some of my initial thoughts on what we saw:
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Monday: Excavating Trench 4 at the far north end of the landform containing 38FA608.
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Monday: Rainforest selfie.
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Tuesday: Trench 3 shows what appears to be a sediment sequence similar to that at 38FA608 (A horizon underlain by sandy loam with increasingly thick lamellae) buried beneath a thick "cap" of alluvium. If this landform was used by human groups, the entire record may have been buried prior to historic use the area (resulting in a well-preserved buried record with no surface archaeology).
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Tuesday: the Trench 8 profile shows well-developed lamellae but no buried A horizon. Sediments in this area appear to have been truncated, removing the upper zones. Artifacts are common on the surface here, but probably represent a palimpsest of materials left behind as the upper deposits were deflated.
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Wednesday: Robert using the Dingo to backfill. This handy machine let us fill trenches after documentation while the backhoe was being used to cut new ones.
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Wednesday: it's egg-laying season for the turtles. We watched this one dig the hole to lay her eggs in. A raccoon found the nest and ate the eggs overnight.
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Thursday: Will and Scott profiling a trench in the northern end of the project area. Several trenches in this area had thick deposits of coarse, loose, laminated sand capping more compact deposits beneath.
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Thursday: we used the backhoe to cut a trench (Trench 25) down in the "basement" of 38FA608. I was surprised to see more sand (with lamellae) beneath the seasonally-saturated sediments we encountered at the bottom of Unit 11 last May. And there is more sand underneath that.
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Firday: this is my "I hope we get all this s@#! done" face. I started the day by documenting the Trench 25 profile and took some samples for OSL dating from the lower sand layers.
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Friday: there was no evidence of human occupation in Trench 5, but there was a sequence of 16 zones that mostly alternated between coarse, loose, sand and more clayey, more compact lenses of sandy loam. I collected two small chunks of charcoal (marked with pink flagging tape in this photo) from zones in this profile that were separated by about a meter, hoping that dates from those will give me some idea of how much time is represented by depositional sequences like this. Other trenches had shorter sequences of alternating sand/clayey sediments sitting on top of what might be "good" sediment sequences that could contain archaeology.
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Friday: rain upriver caused the Broad to rise dramatically by mid-week. This backwater channel was filled on Thursday and Friday. It was nice to get a first-hand look at the flood dynamics in action: this episode will surely have some impact on the landscape.
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"The Paleoindian and Early Archaic Southeast" Symposium at SEAC: Our Contribution

11/9/2017

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I'm currently in Tulsa, OK, at the 2017 Southeastern Archaeological Conference. I took a break this afternoon from papers and talking to hole up in my hotel room and put the finishing touches on the presentation I'll be giving tomorrow. I'm honored to be senior author on a paper with David Anderson (University of Tennessee). Our paper will be last tomorrow in a marathon symposium organized by Shane Miller (Mississippi State University), Ashley Smallwood (University of West Georgia), and Jesse Tune (Fort Lewis College).

I'm really looking forward to the session, which will present summaries, updates, and syntheses of work from across the Southeast. It's intended to be a 20-year update to the work that culminated in the landmark Paleoindian and Early Archaic Southeast volume that was published in 1996. Congratulations are due to the organizers who conceived of the symposium and pulled it off.

I briefly discussed our paper back in September. Significant work has happened since then, and I'm pretty happy with the result. The point of doing a "big" paper like this, in my view, is to attempt to identify and describe patterns that require explanation. We used information from three large datasets -- PIDBA, DINAA, and an always "in progress" compilation of radiocarbon dates -- to investigate patterns of population stability/fluctuation during the Paleoindian period in the Eastern Woodlands.

As of now (rushing through this blog post so I can go out to dinner) I like the result: a six period chronological/geographical model identifying the time/space parameters of population stabilities and fluctuations. As I listen tomorrow to region-by-region updates on what we know about the Paleoindian period in the Southeast, I will almost certainly learn of many things that are wrong. But I will be listening to the results of others' work with a model in mind. That's useful. As the famous quote goes: "all models are wrong, but some are useful." To me, a useful model is a machine for thinking that makes predictions about the world that can be evaluated. So I'm looking forward to seeing what I got wrong. I wish I had a big piece of paper I could spread out on a table so I could take notes time period by time period, region by region.

After this updated photograph of Woody Guthrie, I'll post images of a few key slides from the presentation. I'll put the whole thing on my Academia page tomorrow after the dust settles. [Update 11/13/2017: the presentation is available here.]
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38FA608: The First Radiocarbon Dates

10/20/2017

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I recently announced the return of the Broad River Archaeological Field School for the spring semester of 2018.  Student registration begins in November, and the logistical and strategic wheels are in motion.

This week I received radiocarbon dating results from two samples I submitted to Beta Analytic. Radiocarbon dates are not cheap (about $600 for an AMS analysis that returns an age estimate from a very small sample), and I am grateful to a private donor who supplied funds to date one of the samples from 38FA608.

Here are the date results on a generalized figure of the stratigraphy at 38FA608 as I currently understand it (based on profiles of Units 1, 2, 9, 11, and the original machine cut):​ 
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Generalized stratigraphy at 38FA608.
The date for Zone 7 -- from a single piece of charcoal that Jim Legg picked out of the profile of Unit 9 -- came back right at the Middle/Late Archaic transition. It's a date that's consistent with Zone 7 being related to the Guilford point fragments that we've gotten from the site (only one of which has actually been found in situ).  Thus my original suspicion of a Middle Archaic age for Zone 7 is supported.

The date for the Zone 19 sample, however . . . was a bit of a surprise. It also came back as Middle Archaic in age, about 700-800 calendar years older than Zone 7.

I only wrote briefly about Unit 11, which I and several volunteers put in after field school to get our first good look at what is beneath the deposits exposed by the original machine cut.  There wasn't much material until we neared the boundary of a seasonal water table. Right above that, there were some large cobbles and a very light scattering of small, angular quartz fragments. As I wrote back in May, none of the cobbles appears to have been modified (at least based on a macro inspection), and none of the pieces of angular quartz is a slam dunk for a human-made stone tool. Other than human deposition, however, I can't think of a good explanation for how that material got there -- it is so unlike its sandy matrix in terms of size that it could not have been transported by the same mechanism.
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Excavation of Unit 11 in progress. Large rocks are sitting at the boundary between Zones 15 and 16 as shown in the profile below.
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Annotated profile photo of north wall of Unit 11. Dated charcoal sample (FS 1318) shown in situ in Zone 19.
I dated a single piece of charcoal plucked from the wall of Unit 11 (FS 1318) from a zone beneath the "cultural" material in an attempt to learn something about where those deposits might be in time. Given what seemed to be a fairly regular accumulation of the sand from the Middle Archaic though the Woodland period, I was expecting an Early Holocene rather than a Middle Holocene age -- I thought we might be looking at the edge of an Early Archaic deposit. 

​There are two main possibilities for the date: (1) it accurately dates the age of Zone 19; or (2) it doesn't.

It's possible that that piece of charcoal worked it's way down through the sand from a higher elevation, perhaps through bioturbation (movement by animals or roots). There's no obvious signs of intrusion from where the sample was taken, but that doesn't mean much in these old sands: we wouldn't necessarily expect that subtle signs of intrusion would be discernible in these kinds of sediments after 6000 years. 

So the date could be "bad" in the sense that it isn't giving us the age of the deposit. I think it's entirely possible, however, that it is accurate. While the idea of a slow and steady accumulation of sand over the course of the Archaic is appealing, there's no reason to assume that that's how it went down. It's possible that rates of deposition varied. The levee could have aggraded more rapidly during the Middle Holocene, perhaps as a function of both Middle Holocene climate and the lower elevation of the existing surface at that time (making it easier for the landform to be over-topped by flood waters). 

If Zone 19 really dates to around 4700 BC, the deposits in Zone 15 could be related to a deeply-buried Morrow Mountain occupation. 

Investigating the deep deposits at 38FA608 is a top priority for excavations in the spring. Stay tuned!
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The Broad River Archaeological Field School, Round 2

10/11/2017

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I'm happy to announce that I'll be teaching an archaeological field school again during the Spring semester. We'll be returning to site 38FA608 in Fairfield County, South Carolina, for a second season of fieldwork.  The course will be listed as ANTH 322 (722 for graduate students) and the basic details will remain the same: every Friday from 8:00-4:00, transportation provided.  You can learn all about last year's adventures through blog posts on the Broad River Archaeological Field School website and through a summary article in Legacy.
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The Spring 2017 field season helped us learn a tremendous amount about the natural and cultural deposits at 38FA608. The discovery of a buried Mack (Late Archaic/Early Woodland, ca. 2000 BC) component was one of the big surprises. There is also evidence of a slightly earlier Savannah River component (perhaps represented by several intact pit features). There are tantalizing suggestions of a deeply-buried component that could date to the Early Archaic period.  The basic laboratory processing of the materials from 2017 has been completed, and I'm working on an analysis as time permits. I sent to radiocarbon samples off to Beta Analytic last week (one from the deeply buried zone that I'm betting is Middle Archaic in age, and one from the lowest zone exposed in our post-field school Unit 11 excavations last May).

The 2017 field season has set us up very nicely for work in 2018.  My two main goals are to: (1) excavate several of the pit features that almost certainly belong to the Mack and/or Savannah River components; and (2) make a more extensive exploration of the deep deposits.  The feature excavations will involve both re-opening and expanding the "upstairs" block as well as working along the profile wall to salvage the features that were exposed by the old machine cut.  Investigating the deep component will require some engineering to protect ongoing work from water, both from above and flowing into the air. I've got a plan for that and it involves sandbags.  We are, after all, not lacking in sand.  

I've got some strategic, monetary, and logistical issues to work out before January. I'll keep you posted as my plans develop and as analysis of the 2017 materials moves along.  In the meantime, here's a quick diagram illustrating what I have in mind.
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An Update on Recent and Future Research Presentations

9/8/2017

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The blog has been on the back burner while I deal with the beginning-of-the-semester crunch. I've got a lot going on this year, so I'll probably have less time to write than I did in years past. Keeping all the parts of my three-headed monster of a research agenda moving is more than a full time job.

I wanted to write a quick post about the presentations I've committed to for the fall (SEAC) and spring (SAA) conferences, as they give you a pretty good idea on what's going on with some of my "big picture" work.  I gave a presentation about my work on understanding the Kirk Horizon to the Augusta Archaeological Society at the end of August, and I'll be giving an informal presentation to SCIAA next week synthesizing what we know so far about the natural/cultural deposits at 38FA608 (site of last spring's Broad River Archaeological Field School). Here's what I'll be doing at the regional and national conferences:

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SEAC (November 2017, Tulsa, OK)

David Anderson and I are teaming up to give a paper titled "Structure, Density, and Movement: Large-Scale Datasets and Basic Questions about Early Foraging Societies in the Eastern Woodlands." The paper will part of a symposium organized by Shane Miller, Ashley Smallwood, and Jesse Tune titled The Paleoindian and Early Archaic Southeast: The Last 20 Years, 1996-2016. Here is the abstract of our paper:

"Distributions of diagnostic projectile points show that the Paleoindian and Early Archaic societies of the Eastern Woodlands were spatially-extensive, occupying vast and varied landscapes stretching from the Great Lakes to the Florida Peninsula. The scales of these societies present analytical challenges to understanding both (1) their organization and (2) how and why the densities and distributions of population changed during the Late Pleistocene and Early Holocene. We integrate several large datasets – point distributions, site locations, and radiocarbon dates – to address basic questions about the structure and demography of the Paleoindian and Early Archaic societies of the Eastern Woodlands."  

We'll be integrating data from PIDBA, DINAA, and my ongoing radiocarbon compilation. There will be some significant work involved in meshing all this stuff together in a GIS framework that we can use analytically, so that will be one of the main things on fire for me in the coming month.


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SAA Meeting (April 2018, Washington, D.C.)

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At this year's SAA meetings, I'll be contributing to Scott Jones' symposium titled Forager Lifeways at the Pleistocene-Holocene Transition. My paper is titled "Patterns of Artifact Variability and Changes in the Social Networks of Paleoindian and Early Archaic Hunter-Gatherers in the Eastern Woodlands: A Critical Appraisal and Call for a Reboot." Here is the abstract:

"Inferences about the social networks of Paleoindian and Early Archaic hunter-gatherer societies in the Eastern Woodlands are generally underlain by the assumption that there are simple, logical relationships between (1) patterns of social interaction within and between those societies and (2) patterns of variability in their material culture. Formalized bifacial projectile points are certainly the residues of systems of social interaction, and therefore have the potential to tell us something about social networks. The idea that relationships between artifact variability and social networks are simple, however, can be challenged on both theoretical and empirical grounds: complex systems science and ethnographic data strongly suggest that patterns of person-level interaction do not directly correspond to patterns of material culture visible at archaeological scales. A model-based approach can be used to better understand how changes in human-level behaviors “map up” to changes in both the system-level characteristics of social networks and the patterns of artifact variable that we can describe using archaeological data. Such an approach will allow us to more confidently interpret changes in patterns of artifact variability in terms of changes in the characteristics and spatial continuity/discontinuity of social networks during the Pleistocene-Holocene transition in the Eastern Woodlands."  

This is a basket of questions that was the main focus of my dissertation work. My goal is to lay out the case for why we really need to be doing things differently than we are in order to get at questions about social networks and social interaction. With the SAA meetings still months away, I plan to do new modeling work to support my argument. If I'm to do that, I'll have to ramp up my modeling efforts and deal with some issues around adding space back into the main models I've been working with. It needs to be done, so committing to a paper is a way to make sure I prioritize it.

I'll also be participating in a "Lightning Round" about engaging pseudoarchaeology. In this session (organized by Khori Newlander), the participants will each get just three minutes. No abstract is required for this one. As of now, I plan to use my time for "Swordgate: How to Win Friends and Influence People." 


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Broad River Archaeological Field School: First Season Summary Article

8/5/2017

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I've spent the last couple of weeks on a family vacation to northeast Ohio, southeast Michigan, and the Upper Peninsula. I'm back in Columbia now, armed with a long mental list of things I'd like to do and talk about over the next few months. As I know from past experience that my eyes are often bigger than my stomach, I'll keep the specific list to myself for now. I'll just say it includes some real archaeology, some fake "archaeology," some ecological observations, some politics, some music, some art stuff, and possibly some ponderings about a spaceship cult.

Here's some real archaeology to start.
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The June issue of Legacy (a biannual publication of the South Carolina Institute of Archaeology and Anthropology) contains a summary article about the archaeological field school that I directed last spring at 38FA608, a stratified site on the Broad River north of Columbia. ​

Laboratory processing of the materials from the field school has been proceeding all summer. The artifacts have been washed and most have been cataloged. The next steps will be to consolidate the basic artifact information in a database, label many of the individual lithic and ceramic artifacts, and develop plans for analysis.

The information and materials we recovered provide numerous threads to pull on. My first questions will be basic ones, aimed at building our understanding of the natural and cultural stratigraphy at the site. I'll submit multiple, strategically-selected carbon samples for dating to aid in that regard. We've certainly got enough material from the buried Mack component to start asking interesting questions about that period of the site's occupation. Stay tuned. 
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Broad River Archaeological Field School: Day 7 (2/24/2017)

3/1/2017

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Last Friday marked the halfway point of the field school. We have accomplished a lot in seven days of work, and it's a pleasure to watch the students continue to become more and more comfortable and competent with the strategies, methods, and techniques of basic archaeological excavation.

In the "upstairs" portion of the site, excavations in Units 4 and 6 continued into the deposits beneath Zone 2. In Unit 6, we dealt with a small feature (designated Feature 6) that appeared beneath Zone 2.

A cultural "feature" is basically an immovable artifact -- an "in place" deposit created by human activity. In this part of the world, cultural features include the remains of such things as hearths, storage pits, cooking pits, postholes, burials, etc. Because intact features contain a record of a discrete set of human activities that occurred over a relatively short span of time, they hold valuable clues about what people were actually doing at a site. We love features because they give us specific information that other kinds of deposits cannot.
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Feature 6 in plan view prior to excavation, with lines scribed for mapping. The inner zone of the feature consisted of a circular/elliptical stain that contained a moderate density of charcoal. The outer zone was probably a "bleed" area created by natural processes (worms, insects, and roots) mixing parts of the feature with the surrounding sediment. The nails and string mark the line along which the feature will be excavated and profiled.
As you can see from the photo above, Feature 6 was a rather unspectacular stained area that contained a moderate amount of charcoal. We used standard feature excavating techniques to document and remove the feature: (1) mapped and described it in plan view; (2) bisected it to expose a profile, screening the sediment through 1/4" mesh; (3) documented the profile; (4) removed the remaining portion of the feature as a flotation sample. There wasn't much cultural material in the feature, but there were lots of large chunks of charcoal. In profile the feature appeared to be a shallow basin with a fairly regular shape, and there was no evidence that it was a root stain or rodent burrow.
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Students excavating and documenting Feature 6.
The excavation to expose Feature 6 in profile went down to about 90 cmbd (centimeters below datum), so that seemed like a good target for the bottom of level 7 in Units 4 and 6. By the end of the day, Unit 6 was well on the way to being there, with no sign of cultural features. We're using a shovel-scraping methodology that, hopefully, strikes a good balance between speed and control. I want to go slow enough to recognize cultural features if they're present, but fast enough to end up with some good data on what we're dealing with as far as the horizontal and vertical distribution of prehistoric materials.
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Work in progress in the block.
Meanwhile, Unit 5 -- the third 2m x 2m unit in the "upstairs" block -- finally got to the base of Zone 2. If there was any remaining doubt that Zone 2 was plowed, those doubts were removed by a large stone exposed at the interface of Zones 2 and 3 in Unit 5.  This rock -- the biggest one I've seen at the site so far -- was undoubtedly brought to the site by prehistoric peoples. While the rock is resting securely in situ in Zone 3 sediments, its top has been sheared off and scraped multiple times by a plow (individual plow scars are visible). If there was ever "smoking gun" evidence of plowing, this is it.
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Large rock at the interface of Zones 2 and 3 in Unit 5. The rock is in situ, and the top has been scraped by plowing.
Meanwhile, in the "downstairs" portion of the site, work resumed on the excavation of Unit 9 (the 1m x 3m unit placed to extend the profile wall. As excavations near the top of the (supposed) Middle/Late Archaic zone, Jim Legg dazzled the students with yet another paisley shirt. Work also continued in Unit 7, a 1m x 2m unit being excavated to explore what lies beneath the exposed profile.
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Work in progress in Unit 9 (left) and Unit 7 (lower right).
The last level of Unit 7 contained very little material. It did reveal, however, that the lamellae (the dark bands of sediment caused by the downward migration and accumulation of clay particles) appear to end rather suddenly. The base sediment remains coarse sand. It's possible that the abrupt ending of the lamellae is telling us something about the level of the water table: saturated sediment would presumably not facilitate the downward migration of clay particles. This will be something we can investigate with sediment analysis once we've got a nice profile exposed that we can sample. In the meantime, I've got my fingers crossed that we don't get a significant rainfall that presses the pause button on Unit 7.
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