Where can I find chert in Texas?
Where can I find chert in Texas?
Good Texas rock includes gray Edwards Plateau chert from the San Antonio area; brown Pedernales chert nodules found around the Pedernales River; translucent “rootbeer” chert from Junction; blue-gray Georgetown flint found in chalk beds near Georgetown; and gorgeous Alibates flint (agatized dolomite) from the Canadian …
How do you identify chert?
Chert has four diagnostic features: the waxy luster, a conchoidal (shell-shaped) fracture of the silica mineral chalcedony that composes it, a hardness of seven on the Mohs scale, and a smooth (non-clastic) sedimentary texture. Many types of chert fit into this categorization.
Where is chert found in the United States?
Chert layers are commonly found in eastern Kansas, occurring as irregular beds or rounded nodules within limestone formations. Chert is harder than limestone and is thus more resistant to erosion. The chert-topped hills in the Flint Hills resulted from this uneven erosion of the landscape.
Where can I find Flint rock in Texas?
Alibates Flint Quarries is within a surprising section of canyon landscape in the Canadian River valley below the Caprock Escarpment on the otherwise mostly flat High Plains of Texas. The Canadian River valley, also known as the Canadian Breaks, is the setting for Lake Meredith, the reservoir formed by the Sanford Dam.
Where is Georgetown chert?
Georgetown flint is the name given to an unusually good chert variety that occurs along the eastern fringe of the Edwards Plateau. Modern flintknappers “discovered” a massive, newly exposed source of this world-class material in the early 1970s – the Texas Crushed Stone Quarry south of Georgetown, Texas.
Is chert worth any money?
Chert comes in a wide variety of colors, including differing shades of green. It is rarely valuable compared to semi-precious minerals, but special samples can be worth a few dollars.
Are flint and chert the same thing?
Flint is gray to black and nearly opaque (translucent brown in thin splinters) because of included carbonaceous matter. Opaque, dull, whitish to pale-brown or gray specimens are simply called chert; the light colour and opacity are caused by abundant, extremely minute inclusions of water or air.
Where can I find chert rocks?
Chert is found in settings as diverse as hot spring deposits (siliceous sinter), banded iron formation (jaspilite), or alkaline lakes. However, most chert is found either as bedded chert or as nodular chert.
Where can I find flint and chert?
Chert and flint occur as individual nodules or layers of nodules in limestone or dolomite; they are common in rocks of all ages (notably in the Cretaceous chalk of England). Hard and chemically resistant, the nodules become concentrated in residual soils as the surrounding carbonate rock weathers away.
Where is Edwards chert?
Sources of gray chert, including Edwards Chert, from the region include the western Stockton Plateau, Del Norte Mountains, Glass Mountains, Apache Mountains, and remnant limestone outcrops in scattered localities within primarily volcanic areas.
Who are the experts in the Sauz chert analysis?
Dr James Hinthorne, Thomas Eubanks, and Nick Morales of the University of Texas Pan American played an important role in the analysis of the Sauz chert Robert Soto Vice Chairman, and Ruben and Anabeth Cordova registered members of the Lipan Apache Tribe of Texas were a great aid in research
What does Fort Payne chert look like?
Fort Payne Chert – Very light to light-olive-gray, thin to thick-bedded fine to coarse-grained bioclastic (abundant pelmatozoans) limestone containing abundant nodules, lenses and beds of light to dark-grey chert.
What kind of gemstones are found in Texas?
Minerals found in South Texas are almost exclusively in the quartz family, most notably several varieties of agate, petrified wood, amethyst, citrine, jasper, and chalcedony. Blue topaz is relatively rare, and Texas is one of the only places in the world where it can be found naturally.
What was South Texas like?
South Texas was not a land of abundant floral and faunal resources, but those who knew the land never went hungry Since floral materials are rarely preserved in the archaeological record,