While the thick Anthropocene is judged by some tohave begun with worldwide deposit of radioactivity follow-ing the dropping of the first atomic bomb, there is what I havetermed a “thin” Anthropocene that dates from the use of fireby Homo erectus roughly half a million years ago and extendsup through clearances for agriculture and grazing and the re-sulting deforestation, and siltation.
Although, I mentioned dating in another response, I still find the process fascinating and it's a method that was easily noticeable in the writing. The fact that archaeologists have the ability to trace step by step back in time and compare the artifact or culture to another that is similar and that process brings them to the point where they figure out when and even where the certain object came from is crazy to think about. In this example, Scott talks about what he calls a "thin" Anthropocene that is from 500,000 years ago.