The fact that archaeology often starts with fossilized poop notwithstanding, this timeline reset in Oregon is the most disruptive ever. The Paisley Caves are in the high desert pre-colonial north-central Oregon, have become a test case as to how the human record of the early past of North America can be fixed upon something more permanent than custom. It is no solitary object, no staged “first,” but a rare misunderstanding: biological remains, flakeage, and layered sediments which act like a collection of files but not like a mirepoix. Both combine to make it more difficult to dismiss early occupations as pollution or accident, and more able to produce a consistent image of people returning to the same landscape time and time again.
The National Park Service sets the date of the site in a manner that seems intended to be shocking: at the approximate age of 14,300 BP, meaning around 12,000 BCE, using radiocarbon dating based on DNA in the caves, the agency dates the site. That association not only puts ages on a par with monuments of stone mountains; it is an indication that the Paisley argument is based on several lines of argument that can be cross-checked, and not just one melodramatic object.
The discovery of human genetic material in the ancient coprolites that were found in the cave sediments was what propelled Paisley to intriguing status to consequential. As one peer-reviewed article published in PubMed provides a description of human DNA in the coprolites at Paisley Caves, it provides the researchers a biological “signature,” which can be assigned to the dated layers. It is important since caves can be misleading: animals that burrow, water, and subsequent tourists can move things. Coprolites though are time-stamped behavior, and where their context is safe, they can be used to have the story stuck to the ground rather than put in the air on the basis of inference.
The cultural aspect that cannot be provided by DNA is added using the tools. Another publication in Science that is also listed in PubMed focuses on Western Stemmed projectile points and stratigraphy at Paisley and the dated coprolites. Western Stemmed points are a familiar technological tradition, unrelated to the previously dominant Clovis model, and stratigraphy the chronological order of the layers of sediments gives the rationalisation to associate points, debris, and the biological matter with particular points of utilisation. Practically the strata are page-like: the pages intact, the site can demonstrate whether the various traces are of one occupation, of repeated visits, or of an extended rhythm of revisiting. Even a scholarly source on Paisley has recorded an inquiry that has lasted over time, with the simplified teaching tally of at least 698 documented items, pointing to the fact that the record is broad enough to be tested, as opposed to merely exemplifying an idea.
The pioneer history of Oregon does not stop at Paisley. The Rimrock Draw Rockshelter on public land in southeast Oregon according to the Bureau of land Management was the site were the most ancient occupation of humans in the western United States with artifacts discovered under a blanket of volcano ash. The documented rockshelver floor of the explored site puts the site at approximately 605 square meters, which is large enough to maintain recurring and diverse activity, but still constitutes one and protectable context.
These Oregon sites, when viewed collectively, are useful in understanding why first “Americans research” no longer relies as heavily on one culture term and instead relies on the way evidence is preserved. In Yukon Territory, Canada, Bluefish Caves research projects reveal new radiocarbon datings of cut-marked bones indicating the presence of humans there as early as 24,000 cal BP, and controversies on the tool-like stones in the Chiquihuite Cave in Mexico bring to mind the same underlying demand, that is, proving that traces are cultural, not natural. What Oregon offers in return is its strange capacity to bring biology, technology, and sediment together in a single readable sequence, an engineering grade dataset to a question that once had been based upon a lot more slender evidence.
