Wednesday, June 20, 2012

A description of coring with Dr. Monaghan by Corinne Schultz, Gary Macagaeg, and Hannah Bose.

On June 5, Dr. Monaghan, Gary, Hannah, and Corinne took three cores from Mound F. The first two cores were taken on the south side of Glenn A. Black's profile, which he supposedly left after his almost entire excavation of the mound. The third core was taken from the north side of the supposed profile.

Core 1 was taken some ways away from the profile so as to get a view of unexcavated mound, and it yielded useful results. After an entire afternoon of analysis and description of the core, we made an interpretation based on our data.  We interpreted the top division of core 1, which we called alostratigraphic unit 1, or ASU 1, as the reconstruction of the primary mound by Black in the 1970s. Underneath, in ASU 2, there is a gradational boundary in soil color and texture, which may represent the reconstruction on top of the remaining original primary mound which Black left untouched. Then there is a sharp boundary, a very distinct sand layer on top of a bioturbated layer, which we called ASU 3. This layer was filled with enough charcoal that, if we wanted to, we use for dating. This charcoal layer is evidence of cultural activity. Underneath this layer is the inner mound fill. There is yet another level of bioturbation under the inner mound, also indicating cultural activity, followed by B-horizon soil. B-horizon soil is sterile, void of any cultural remains and gives us an idea where the original ground was prior to the mound construction.


Below Dr. Monaghan discusses core description and analysis with Lela Grant, Blake Davenport, Quinn Kissane, and Jason Hines.



Week Five (June 6th- June 13th)- By Hannah Bose, Gary Macadeag, and Corinne Schultz

Hello!  This is our last student installment for the 2012 Angel Field School blog.  The field season has gone by so quickly!  In addition to this week's update, a second blog detailing the geophysical coring work has been posted.  As always, I hope you enjoy.

Week five has turned out to be quite eventful!  We started coring Mound F with Dr. Monaghan, made significant progress in the trench, and found some very exciting artifacts at water screening.

Feature 10, a soil zone in unit 8 associated with the palisade, has revealed itself to be more than we expected.  The feature was originally thought to be a single palisade, but soil changes within the feature lead us to believe it actually two palisades, one a rebuild on top of the other. Even more interesting is the fact that the postholes we found inside it are much smaller than expected, meaning the Mississippian people of Angel were probably using much smaller trees to build the palisade. There is some debate at the site as to whether these postholes we are finding are characteristic of all post holes within the 2 kilometer long palisade wall.   Some speculate that there are larger postholes at other places within the wall. 

We are digging our 1x1 units down quickly, and have closed out half of the twelve.  This means we have reached soil containing no cultural material, which we call sterile soil or the B-horizon. Between the closed out units and the low elevation levels of the remaining ones, we are seeing some wonderful profile views.  We are clean-scraping the walls to get a nice fresh face so we can map and draw them. This is a time consuming process, but the resulting diagrams are rewarding.  These maps help us put our individual levels in their respective 1 x 1 sub-units into the bigger context of the unit as a whole. Excavations have produced many exciting artifacts this week, including about 30 bone needles, over 100 clay beads, and a partial burnt corncob.  The corncob was especially interesting because it was well preserved and is very different in size than the corn we are familiar with today.  In addition, because corn grows annually, it will be very useful for dating.

Outside the trench, Dr. Bill Monaghan is surveying through the use of a total station to find the locations of the Indiana University Field School barracks and laboratory from the 1940s. In addition, Dr. Monaghan is taking cores from Mound F and Mound H. The process of coring, as described in detail in last week’s blog post, is new to most of us at field school. The cores from Mound F were fairly illustrative and are covered in the next blog entry. Dr. Monaghan and some students took cores from Mound H to see if there are any cultural remains. If there is not, then this would suggest that Mound H may not be a man built mound at all. Upon questioning, Dr. Monaghan stated that the results were "inconclusive." In other words, the Mound H cores did not yield any cultural activity. But, as Dr. Monaghan likes to say, “The absence of evidence is not the evidence of absence.”


More photos!

Busy and a beehive as we finish several 1x1s.

Bianaca Brammer puts the finishing touches on her lovely profile map.

Gary Macadaeg and Aaron Williamson excavate into the palisade trench,
which we discovered to contain both an original palisade followed by a
rebuild.


Preparing to profile, Karin Williams and Brandon Black fill out paperwork
as Jeremy Wilson sprays down the walls to keep them moist.

Smiles all around even on a very hot day.


Popsicle time!




Above and below: Dr. Monaghan discusses coring description and analysis with Lela Grant,
Blake Davenport and Jason Hines.


Above and below: Marsha Ratliff profiles the western wall of 12-E-4
which contains the palisade trench and a very deep pit.


Hannah Bose and Corinne Schultz excavated into the original palisade trench. 
At its deepest the trench is about 2 meters below our datum.

Bianaca Brammer smiles up from 12-E-7 where she is shoveling out
B-horizon in order to get a better profile picture of 12-E-5 to the west.


Tony Krus examines the profile of last year's 1x1, 11-W-1, which was
not quite finished. 

Taking a water break on a very warm day, Corinne Schultz and
Bianaca Brammer flash a smile.

How many archaeologists can we fit in a 1x1? 


Tuesday, June 12, 2012

Some Mundane Archeology- By Joeseph Renow

Hello, my name is Joseph. I am currently a graduate student at Loyola University in Chicago, and I have been following some of your fellow archeologists around in the hot sun for the last three summers. I am writing to you today because I was told I might have an interesting perspective to add to the discussion here. I suppose that I do offer a different perspective on archeology, having trained as a sociologist and all, but I am less confident about the “interesting” part. As a sociologist, I typically want to explain how a particular group emerges, functions, grows, and changes, and asking these sorts of questions about science inevitably leads me to examine its more mundane parts. Admittedly my perspective lacks the dramatics that other tales of science possess, but it is my hope that by examining the more familiar parts, we gain insight into one of our most trusted institutions.

Below I have taken the time to write about what I believe are three particularly significant, but also very mundane, practices observed at the field school this summer. The first practice is that lowly skill of troweling. This skill is not entirely overlooked by archeologists; many name their trowels and report a strange fondness for the act. Having never used a trowel I cannot speak about any pleasurable sensations, but I can tell you about the epistemic authority embodied in its use. After troweling, I then turn your attention to a well-known device called a Munsell, which I have learned archeologists use to resolve a particularly difficult problem found in all of science (reliability). In philosophy reliability might be a perennial problem, but in archeology a very simple, ubiquitous, and unassuming collection of cardboard, colors, and holes keep things moving forward. I conclude my bit here with a brief discussion of my more immediate interest in archeology (how does scientific knowledge move through society?). The idea that scientific knowledge spreads out like radio waves might suffice at an abstract level, but in actuality it is a truly absurd notion. Scientific knowledge might retrospectively appear to spread through society, but such appearances are only made possible through a great expenditure of labor and resources.



The Way of the Trowel: An Embodied Epistemology

When I think back on what mundane act I was most impressed with this summer, it is without a doubt the ubiquitous troweling which one observes while in the presence of archeologists. To be honest, I was surprised by just how physical (embodied) archeology is. I mean, would it be incorrect of me to assume that science is thought to be a particularly (if not entirely) mental practice? We obviously assume some level of a corporeal state, but when one thinks about scientists witnessing nature, do we often think of all the examining, discussing, and reconfiguring of dirt one experiences in the company of archeologists? Just from a few observations one rightly concludes that troweling is a critical skill. In fact, if one observes long enough one will learn that without the invention and transmission of several embodied skills, the archeology we know and love today would look quite different. How the trowel does what it does is probably better understood by the readers of this blog than anyone else, but at the risk of sounding silly I want to discuss the practice just a little further, as I find it somewhat remarkable that something so simple can at the same time be so critical to the creation of archeological knowledge.

At the field school this summer I was introduced to troweling immediately. In my set of notes I recall a rank of young recruits, who after being pointed in the direction of a trench wall, were told to start digging. When it comes to troweling there is no recipe from which to transmit the skill into new practitioners; it is a skill that can only be learned through a great deal of practice. In one of my many conversations with students at the field school this year, I was told that troweling is something that everyone has to figure out on their own. Interestingly, the absence of a standardized formula does not appear to be much of a problem for archeology, as students are quickly and efficiently converted into highly tuned scientific instruments. Through blood, sweat, and tears (not how we normally talk about the transmission of knowledge) new practitioners eventually gain the necessary skill to create that most wonderful of archeological phenomenon (a feature!). I suppose I should not be too surprised to learn that such an important phenomenon is produced through a craft-like skill, but is it wrong of me to suggest that such an idea runs counter to our idealized understanding of science? At a time when high-tech is synonymous with progress, would not most folks find it surprising that a craft-like skill is at the heart of a scientific discipline? In the end, archeologists navigate that narrow, but all too important boundary between archeological significance and insignificance through the use of their trowels. In the hand of a skilled practitioner the trowel gives shape and qualities to what only moments ago was a handful of dirt. Archeology has for the moment developed a reliable means through which to do what it does – how could we expect more?



Munsell Vision: Disciplining the Human Eye

Okay, so troweling is like a hidden art that makes modern archeology (partly) what it is, but I want to be careful not to overstate archeology’s reliance on embodied skills. There are times (for whatever reason) that archeology is unable to rely upon the embodied skills of its human practitioners. At times the human element of archeology breaks down or is found to be in need of repair. A few weeks into the field school this year I noticed just such a case, a kind of intervention on the part of archeology to overcome what is a very serious philosophical problem. My field notes tell of a young woman holding up a small chart next to a bit of soil sitting just at the end of her trowel. The young woman moves her trowel across several holes which appear to be systematically dispersed before finally settling on a particular slot. For those of you who practice archeology on a daily basis you have likely identified this device as the Munsell chart, which, like the trowel discussed above, is a mundane and ubiquitous object at any archeological field site. What is well understood, familiar, and commonplace for archeology, however, is actually a very interesting device for a sociologist to stumble upon, as it is devices such as these that hold answers to the questions we like to ask (how do individuals work cooperatively?).

The presence of the chart suggests that the reliability of the human eye to recognize changes in color is not adequate for the demanding needs of modern archeology. However, with the aid of a Munsell chart, the young archeologists I observed effortlessly assigned an impressive array of information to many bits of soil. For philosophy and sociology, this simple, almost invisible device is quite the hero. For centuries philosophers have argued over the problems associated with observation, while sociologists have nearly pulled out all their hair trying to explain how cooperative action is possible. Here, though, in the heat and dirt of an archeological trench, one can witness how these seemingly monumental obstacles are overcome on a daily basis by nothing more than some cardboard and ink. The archeological eye alone (for whatever reason) does not reliably transmit the amount of detailed information that archeologists must convey to one another, but with the aid of a small device the unruly (or untrained) human eye is disciplined into a powerful scientific instrument once again.



Moving Science: How Archeology Travels

Well, it is getting late, time to wrap things up here, but before I go I want to briefly discuss one of the issues I am grappling with in my dissertation. The general problem I am dealing with suggests that knowledge which cannot escape the moorings of its birth is doomed to a death of irrelevancy (often a very rapid death). Using the work of Pasteur to make his case, one scholar tells us that the problem for Pasteur (like the rest of science), was how to move his (then) newly created microbes beyond the walls of his laboratory? For as long as the things he called microbes were unable to leave his laboratory, they would remain irrelevant; it could even be argued (which it was) that they did not exist! Of course, most of us know that Pasteur was successful; his microbes do exist, and now surround us all (no matter how much scientists in the future might laugh at the notion). How Pasteur successfully moved his microbes beyond the walls of his laboratory took an entire book to explain, but suffice it to say, it took a lot of work, and more than a little luck to have the microbes we have today!

So how does all this talk of traveling knowledge and Pasteur’s microbes relate to my interest in archeology? Simple really, I think one could make the case that archeology is a particularly place-bound science, and if we are in agreement on this point, then it would seem only logical to suggest that archeology should have greater difficulty moving its knowledge beyond the fields from which it emerges. Philosophically speaking, how does archeology move away from its objects of study (field sites), and yet remain empirically grounded? As it is, this turns out not to be a particularly difficult problem for archeology, because while it is true archeological phenomena are embedded in specific locations, archeological knowledge appears to travel efficiently through society. To be sure it resides in some places more than others, but there is still a great deal of traveling being done. In the end, moving archeological knowledge through society has become just as mundane a practice as the use of a trowel. When archeologists desire to move their research away from a trench in Southwest Indiana, they do not sit around and ponder how to overcome such a philosophical obstacle, they simply utilize what you might call an epistemic infrastructure, a preexisting system of people, ideas, and things through which the transmission of knowledge is made possible. What is an open question in philosophy is simply an ordinary practice for archeology.

To bring this point home, a feature often begins as nothing more than a scratched-in line on a unit floor or trench wall. If the scratched-in line remains long enough, it will eventually be given an identification number and a location on a field drawing (something akin to a social security number and a birth certificate). Treatments and noteworthy details about the feature are then recorded on sheets of paper (like a medical record), and on some occasions it even gets its picture taken (like when we went to school!). At some point later, the feature is carefully dug out and then placed into some kind of plastic container (no easy metaphor for this one). From here the story gets a little more tragic, as the still heavy feature is water tortured into a dramatic new form (the screams!). Eventually what remains of a once robust feature is dried out and stored in plastic bags, and it is at this point that our feature is finally mobile enough to be transported through the preexisting infrastructure put in place to move knowledge around. Philosophers may debate whether this new object can truly represent the former, but for archeology the epistemic value of their newly configured feature is not in doubt. For now, I cannot say more about how the infrastructure in place is capable of both transporting and grounding scientific knowledge (this is something I hope to explore further in my dissertation). I can however tell you that the infrastructure in place allows our archeologists to continue on with the business of creating more archeology.

I think I will close my discussion with part of a conversation I had with Dr. Monaghan one morning. We were discussing what exactly I hoped to achieve with my study when he treated me to a delightful explanation of his job. His exact words escape me at the moment, but he basically said that a lot of what he does is logistical. He was not diminishing the conceptual demands of his job (being a scientist requires a lot of creative thinking); what he was doing was pointing out the mundane, but very critical aspects of science which we tend to overlook or ignore when we think of, talk about, and sadly, fund those responsible for bringing scientific knowledge into society.

Week 4 (May 31st- June 6th) - Brought to you this week by Arron Wiliamson and Lela Grant.


Sorry for the lag in posts this week bloggers!  Field school internet is sometimes hard to come by.  However, in addition to our weekly update we have a special extra post this week from Joeseph Renow.  Joeseph is a Ph. D candidate at Loyola University who is writing his dissertation on how research is conducted at the Angel site.  You will find this in the next post.  I hope you enjoy the different perspective!

Now for ou weekly update.

            The Blog week started with forecasts of scattered thunderstorms. Thursday afternoon severe storms rolled in during the afternoon, but we didn’t let that stop us. After covering the trench to protect our work from the rain, we broke into two groups. One group moved to the garage to repair (once again!) our broken water screens, while the other group moved the museum building to organize the bagged artifacts that had accumulated over the course of field school. Friday the rain was gone, but cold air remained. The group headed to the trench in hoodies and long pants, and water screeners wore rain ponchos to keep dry and warm. 

            After our days of rain and cold, we were reminded of the important role weather and climate play in the formation of an archaeological site. This fact is most obviously seen in our eastern most units. These units (9-12) sit mostly outside the palisade and on an eastward slope. As we excavated, we noticed layers of clay which were originally thought to have been packed down by cultural activity, but underneath the clay we found a feature full of artifacts including a large number of deer bone, pottery sherds, fish bones and scales, lithics, and bone needles. The considerable amounts of large faunal remains and charcoal are indicative of a period of rapid filling. This shows that the material did not have enough time to be washed or fall down the slope. 

The layers of clay over the feature suggest that it’s a result of washing from either rain or the nearby Ohio River. Another interpretation, provided by Dr. Bill Monaghan, is that these layers, with so little cultural debris, are due to attempts to repair or support the palisade wall with this type of soil followed by periods of trash deposits.  The area immediately outside palisade also has a large amount of charcoal and burnt daub, which suggests the palisade, may have been burned at some point.

            In other areas of the site, Dr. Bill Monaghan, one of our directors, taught students how to take core samples. They started with Mound F, the second largest at the site with a long and interesting history. It was added to twice prehistorically, and the first “mound” was capped with sand.  Historically, Glenn A. Black and his WPA workers excavated the outer most mound in the 1930’s and 40’s. After his excavations, the mound was rebuilt using backfill dirt. Dr. Monaghan and our students wanted to take core samples to see if there was evidence of all of the aforementioned layers and the possibility that some of the original mound remained for future research.

Using a tractor, they drove 4 foot long clear tubes into the mound; these tubes essentially created an observable cross-section of the mound layers. Working from ground level down, the top most section of the core sample included grass and the backfill Glenn A. Black used to rebuild the mound after excavation. There was then a transitional period between the WPA excavation and the prehistoric outer mound seen within the cores. It appears that Black did not completely excavate the outer mound. Beneath the outer mound layer, there is a very thin line of sand in the core sample, which reflects the sand cap of the inner mound, prior to the construction of the outer mound. The sand layer is followed by an area of charcoal, which suggests a period of heavy prehistoric cultural activity. After the charcoal layer, we saw the inner mound material. Beneath the inner mound material, there is another layer of charcoal, which again suggests cultural activity, though this time it is associated with the original ground surface, prior to any mound construction. The final layer visible in the core sample is the “B-horizon” which is the name given to the sterile soil that underlies all cultural activity.

 How our artifacts are processed!


Step 1: Pour the buckets of soil coming from excavation onto water screens and carefully wash the dirt away with a hose.  Below you see students Gary Macadaeg, Lela Grant, Marsha Ratliff, and supervisor Jasmine McClure.  Our tough students continued even in 50 degree weather!


 












Step 3: Spread out the washed
artifacts in drying racks to be dried by the sun
Step 2: Find really neat artifacts
such as this bird beak!
  
Step 4: Bag the dried artifacts with their
respective field specimen cards into
labeled bags
 


Step 5: Organize artifacts in the museum and
place them back into buckets for transport back to the Glenn A. Black Lab at IU



After excavating the back dirt, Dr. Bill Monaghan and Dr. Jeremy Wilson
looking at the profile from excavations which took place in 2007


Hannah Bose cleans the walls of 12-E-11
Left: Mama Bear (Autumn Williamson) fills out FS (field specimen) cards which are placed in each bucket of soil for water screening
Above: Honey Badger (Blake Davenport) excavates a complex series of zones in 12-E-2.



In this photo you can see a series of three wall trenches,
likely representing three rebuilding episodes of the structure's walls.
Blake Davenport is seen here.

After the current level is complete, Jason Hines takes elevations in each of the four corners in
12-E-10 using the datum line, a line level, and tape measurer.  The single datum allows for the precise measurement of elevations across the entire unit of 12-E.

Having withstood a very cold day in the field, the students and myself take time for some fun pictures to keep moral high.  This is the Angel version of Grant Wood's "American Gothic."  Perhaps we should call it "Angelian Gothic!"







Saturday, June 2, 2012

Week 3 (May 24th- 30th)- presented to us by Marsha Ratliff and Brandon Black.


Week three of the field school has revealed a lot of interesting things.

We have found several overlapping wall trenches in unit 2 which runs into units 1, 3, and 4. These look as though they may be the corner of one structure with many rebuilds of old walls. Interesting finds include more small bone needles as well as 2 giant bone needles that may have been used for weaving fishing nets, but this is only this writer’s interpretation.   We have started to find more and more pits which have been full of faunal bones and charcoal as well as pottery and fired daub from walls. We also continued excavating the palisade wall trench in the East Village this week. We are hoping that this will tell us more about warfare and defenses, as well as chronology, and how this would have affected daily life in Angle Mounds during Mississippian times.

Another great part of this field school is the interesting lectures we have from knowledgeable people in their fields. This week’s first lecturer was Matt Pike.  He explained magnetometry and how that works and why the instruments he uses has to be recalibrated at least twice daily as the magnetic field in the earth is constantly fluctuating and must be taken account of for the machinery to work properly.  One of the issues that must be taken into account is the presence of any metal that may be in the vicinity of the test area.  This would result in exaggerated signals in these areas and throw the interpretation completely off. To avoid this, a thorough search of the area to be tested must be conducted and the area cleaned out before any magnetometry is attempted.

We were also lucky enough to have a second lecture this week from Dr. Heather Worne, assistant professor of anthropology at University of Kentucky. She also attended graduate school at Binghamton University in New York with our own Jeremy Wilson, who is the instructor for this field school.  Dr. Worne’s lecture was about skeletal trauma on the bodies of Native Americans that showed practices of warfare in the Middle Cumberland region of Tennessee. The pattern of trauma on these bodies tells us a lot about general life and warfare conditions in Midwestern Native American communities during pre-contact times.  For example, the data showed males and females were targeted in nearly equal frequency but females exhibited more blunt force cranial trauma on the front of the skull.  This can lead to several pathways for interpretation. 

We were able to do our first OSL test on the sand from unit 2. An OSL test stands for optically stimulated luminescence test, which is able to show the last time a sample of sand saw the sunlight. Care must be taken to not expose the sample to any new light; we are all wondering when those test results will be back.  The past two days we have been dealing with thunderstorms popping up which force us to cover up the site, suspend work, and run for the cover of the work shed so that no one gets struck by lightning. 

This downtime due to the rain has given us time to repair some of our water screen equipment which has needed repair due to rips and tears in the fine mesh weave we to use process artifacts from the dig site. Hopefully, with more screens we can go through more buckets of soil faster and keep up with all the dirt coming from the guys at the excavations.

Finally, electrical resistivity tests are also starting to be done this week to the east of where Glenn A. Black first had WPA workers trained before he could actually get them on the larger site. Electrical resistivity tests the soil and shows how much the surrounding soils resist an electrical current which can show us anomalies in the soils which would indicate human activity. This is easier to do when the soil is moist or wet since the electrical current would be carried easier through the water as opposed to dry earth, so the rain is a blessing for this type of test and we are going to be taking full advantage of that.

Another view of our field school.
Artifacts drying after being water screened.  Each section of the drying racks
holds a different field specimen (FS) such a soil from one level of excavation.

Water screeners Bianaca Brammer, Blake Davenport, and Jasmine McClure; Mud Worriers.

From right to left: Jason Hines, Arron Williamson, and Autumn Williamson
on a sunny day at water screening.
Matt Pike walking a transect while collecting magnetometry data at Angel.

In the Angel Museum's garage Lela Grant, Gary Macadaeg, and Jason Hines 
enjoy the cool rush of air before the storm.

Downtime in the downpour.
Brandon Black excavating a soil zone identified by differences in soil contents,
texture, and color.
Jason Hines recording his daily log in a field journal which each
student receives. Behind him a storms rolls in.

This summer hay was harvested across the Angel site.  Our view to the west
shows the site's largest earthen work, Mound A.
Excavation of unit 12-E.  As the season moves on, students sink lower
into the ground as soil is carefully removed for water screening.

Tony Krus reviewing paperwork for Brandon Black.

Graduate students Aaron Williamson and Matt Pike muscling
through a clay zone in unison.
Lela Grant drawing a plan map at the end of a level.
The students finishing their paperwork to
preparing to close the unit before the rain hits.
Aaron Williamson headed out of the trench through 'The Mine Shaft',
 protective boards which are left in place to cover last year's excavations
to the west. 
Tony Krus, in a feat balancing skill, brings empty buckets
back to the students for new soil.

Another view.

Now the question is, 'What is the best way to get them off?'

Blake Davenport and Bianaca Brammer smiling
with their art deco looking 1x1.
Brandon Black, wielder of Mega Trowel, a remnant of some past
IU field school.