Chert is not found everywhere. It was a precious commodity that early people traded and transported long distances. As early as 8000 BC, the people of what are now England and France dug shafts up to 300 feet deep into layers of soft chalk to mine chert nodules. These are some of the oldest underground … See more Chert is a sedimentary rock composed of microcrystalline or cryptocrystalline quartz, the mineral form of silicon dioxide (SiO2). It occurs as nodules, … See more Some of the silicon dioxide in chert is thought to have a biological origin. In some parts of the ocean and in shallow seas, large numbers of diatoms and radiolarians live in the water. These organisms have a … See more Chert can form when microcrystals of silicon dioxide grow within soft sediments that will become limestone or chalk. In these sediments, enormous numbers of silicon dioxide … See more Chert is a microcrystalline silicon dioxide (SiO2). As chert nodules or concretions grow within a sediment mass, their growth can incorporate … See more http://lithiccastinglab.com/gallery-pages/2012mayendscrapers.htm
Retouched chert flake--scraper? – Objects – eMuseum
WebScraper Museum number: 1-62466 Permalink: ark:/21549/hm21010062466 Accession number: Acc.807 Object count: 1 Description: chert scraper Donor: Adán Eduardo Treganza, Clarence E. Smith, and Walter D. Weymouth Collection place: CA-Men-248, Round Valley Reservation, Mendocino County WebJan 20, 2024 · Here we further test Wilmsen’s (1970) conclusion that early Paleoindian tools—specifically, hafted end scrapers—were redesigned to facilitate the processing of a broader range of resources as colonizing populations moved into the forested environments of eastern North America from the west. meter squared to inches squared
Beautiful black & white chert Plains side-notched arrow point
WebSmall oval chert scraper - made on the butt-end of a blade with a broken tip; Scraper. Langhnaj. Image Not Available for 28 chert thumb scrapers - large. 37-11-50/1911 28 chert thumb scrapers - large Scraper. Senegal. Image Not ... WebFind many great new & used options and get the best deals for HARDIN Point Arkansas Type Bailey's Chert MODERN Good Color/Form at the best online prices at eBay! Free shipping for many products! ... Lot of 30-Native American Mixed Artifacts Scrapers Projectile Multi-Use Tools. Pre-owned. $12.00 + $7.98 shipping. Seller with a 100% … Webchert end scrapers from the Ready site and Attica chert end scrapers from the Bostrom site. Of all the differences among these Paleoindian and Early Archaic end scrapers, outline morpholoo (triangular) and the presence of angular or spurred corners are the most prevalent. These two selec- how to add a network camera