Chronometric dating in archeology advances in archaeological and museum science

CATEGORY: artifact DEFINITION: A flint or stone core from which blades have been struck.

Such cores are typically conical or pyramidal in shape; to produce regular even blades a certain degree of preparation is needed as well as periodic rejuvenation.

Middle to Late Archaic Period Changes in Terrestrial Resource Exploitation along the Los Peñasquitos Creek Watershed in Western San Diego County: Vertebrate Faunal Evidence from the Scripps Poway Parkway Site (CA-SDI-4608) [JCGBA]. ORG, and the CALIFORNIAPREHISTORY MASTHEAD are all trademarks of Coyote Press, Gary S.

Explaining Prehistoric Variation in the Abundance of Large Prey: A Zooarchaeological Analysis of Deer and Rabbit Hunting along the Pecho Coast of Central California. Cotsen Institute Press, University of California, Los Angeles.]The Cross Creek-Diablo Canyon Complex of South Central California: Mid-latitude Pacific Foragers at the Pleistocene-Holocene Boundary. 2.]Another Trans-Holocene Sequence from Diablo Canyon: New Faunal and Radiocarbon Findings from CA-SLO-585, San Luis Obispo County, California.

Such flakes are the product of extending the life of a core that has become uneven or difficult to work but which still has the potential to yield further blades.

"Human Remains from the Pleistocene-Holocene Transition of Southwest China Suggest a Complex Evolutionary History for East Asians." PLo S ONE 7, no. Breakup and early seafloor spreading between India and Antarctica Gaina, Carmen, R.

Signals of Barremian (116 Ma) or younger oceanic crust beneath the Bay of Bengal along 14N latitude between 81E and 93E, Mar.

SYNONYMS OR RELATED TERMS: coring CATEGORY: artifact DEFINITION: A black or gray zone in the interior cross-section of a vessel wall, usually associated with incomplete removal of carbonaceous matter from the clay during relatively low-temperature firing; not to be confused with black coring at high temperatures, which results from trapped gases and may lead to bloating SYNONYMS OR RELATED TERMS: nucleus CATEGORY: lithics DEFINITION: A piece of stone used as a blank from which flakes or blades were removed by prehistoric toolmakers.

Usually it was the by-product of toolmaking, but it may also have been shaped and modified to serve as an implement in its own right. The core is undisturbed and the sediment contacts, soil boundaries, and structures are intact and can be described accurately.

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INTRODUCTION | PREPARATION METHODS | REFERENCES The obsidian hydration dating method was introduced to the archaeological community in 1960 by Irving Friedman and Robert Smith of the U. When a new surface of obsidian is exposed to the atmosphere, such as during the manufacture of glass tools, water begins to slowly diffuse from the surface into the interior of the specimen.

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