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| Smoke processing features from three different eras all stacked up on top of each other |
A week ago today I was madly digging at an archaeological site in Kiliuda Bay - desperate to get to the bottom. I'd just found another layer below what I had thought was the bottom. I was worried that I would never get to the end of the cultural layers. Now the dig is over and I have had some time to reflect on what we found. And thank God last Sunday I did bottom out at 2 meters down!
The site today is a remnant of what it once was. Even 20 years ago there were house depressions where there is now just beach. For our excavation we dug two 2 by 2 meters blocks into the last remaining remnants of the site on either side of a small pond. In one of these blocks (locus A) we found a late prehistoric faunal midden with excellent preservation. In the other block (locus B) we found much deeper deposits and the remains of smoke processing features from three different eras (circa 500, 4000, and 5,000 years ago).
It is interesting that we found only late prehistoric deposits in one area and much older and deeper deposits in another area. It indicates that the site has almost entirely eroded away in the past. The current decimation by erosion is not the first time this has happened. Changing sea levels, and land level changes due to earthquakes and other processes have had their way with the site at various moments of time in the past. At other times the coastline has also clearly built outwards and site has been 'created' so to speak.
The late prehistoric shell midden bottomed out on an old beach - so at some time prior to 500 years ago that portion of the site was completely eroded away. In the deeper block I was able to tease out when the site eroded and was cut back in the past. Last Saturday I was so shocked to find deeply buried cultural deposits because on the current erosion face these deposits were not present. There I only saw 4000 year old material directly on top of beach gravels. The old stuff had been eroded away by a past erosional episode, and yet, a meter further inland these deposits were still there.
Anyway, it all makes for a nice story, but I better stop expounding on it before I put all my blog readers to sleep. If you are still interested the erosional history of the site, it is all there in the 'stratigraphy' drawing from my notes below (3rd picture).
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| Profile from my notes explaining the different layers |
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| Site stratigraphy - it seems the site has almost been wiped out by erosion a few times in the past |
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| A well-preserved shell midden - this is what people ate at the site |
The midden had excellent preservation and in it we found the remains of the animals eaten at the site. Lots of blue mussels, chitons, and periwinkles, but also seals, birds, whales and porpoise. The most common fish remains were cod, but we also saw salmon and halibut bones.
We even possibly found the remains of a crab. This is exciting because crab remains are never found in sites on Kodiak, but no one knows if that is because Alutiiq people did not eat them because of a food taboo or because they are too fragile to last long in the middens. The fact that we found one crab bone would indicate that they
SHOULD be preserved in middens and lends credence to the fact that Alutiiq people probably did not eat crabs. The 1 crab bone may have been in the stomach of a seal or halibut butchered on the site.
The fauna from the midden will be analyzed this fall, and we will also find out if we really got a crab part. I got my fingers crossed!
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| 3800 year old net weight found in the 'black Kachemak' layer |
The most exciting discovery for me was the evidence for 3 different episodes of smoke-processing at the site. The site is situated right next to a deep and biologically productive portion of Kiliuda Bay, and Alutiiq people have clearly been going to the same place to fish and hunt for at least 5000 years. And they chose the exact same spot to smoke process their catch.
At the top of the site we found relatively small, late prehistoric pits filled with rocks and charcoal, and capped with blocks of sods. The sod was probably used to 'slow down' the fires. These pits were associated with cod bones - so they were probably used to smoke process cod.
Funnily enough the older smoke processing features were much more elaborate. The oldest feature was probably up to 15 feet across and had a roof covered with dirt and sod. This structure appears to have burned down and collapsed. The 3800 year old features were extensive but seem to have lacked roofs.
Anyway, all this is pretty preliminary and a tad bit speculative. But it is good to have some initial impressions. Now comes the analysis in the lab - will my initial impressions hold up under analysis? I'm also sure that some exciting discoveries will come out of the lab analysis itself!
Patrick
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| The burned roof of a 5000? year-old structure |
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| Cod bones associated with a 500 year old smoke processing pit |
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| The site today - 500 years ago it was much larger and extended out where there is beach today |
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| Nice view from the screen - Alex hard at work |