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chert
chert (tʃɜːt) Also 7–8 chirt. [App. a local term, which has been taken into geological use. Origin not ascertained. Prof. Skeat compares Kentish place-names like Brasted Chart; but this chart is explained by Parish and Shaw as ‘a rough common overrun with gorse, broom, bracken, etc.’, whence charty ...
Oxford English Dictionary
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Chert
However, most chert is found either as bedded chert or as nodular chert. Bedded chert is more common in Precambrian beds, but nodular chert became more common in the Phanerozoic as the total volume of chert in the rock record
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Rhynie chert
the Windyfield chert. Mycorrhizae are also found in the Rhynie chert.
wikipedia.org
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Kalur Chert
The Kalur Chert is a geologic formation in Albania. It contains fossils dated to the late Bajocian to mid Oxfordian of the Jurassic. Vigla Formation
References
Geologic formations of Albania
Jurassic System of Europe
Bathonian Stage
Bajocian Stage
Callovian Stage
Oxfordian Stage
Chert
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Gunflint chert
The Gunflint Chert is of paleontological significance, as it contains evidence of microbial life from the Paleoproterozoic. The Gunflint Chert is composed of biogenic stromatolites.
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Penters Chert
The Penters Chert is a Devonian geologic formation in the Ozark Plateaus of Arkansas.
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Mill Creek chert
Mill Creek chert is a type of chert found in Southern Illinois and heavily exploited by members of the Mississippian culture (800 to 1600 CE). Mill Creek Chert is a tough, coarse-grained chert, usually brown or gray in color, and occurs as large tabular shaped nodules.
wikipedia.org
en.wikipedia.org
Clear Creek Chert
The Clear Creek Chert is a geologic formation in Indiana.
References
Generalized Stratigraphic Column of Indiana Bedrock
Geology of Indiana
wikipedia.org
en.wikipedia.org
(PDF) Research status and advances on chert and Permian chert event
This paper reviewed the history and the advancement of research on chert, especially paying more attention on the research progress about both bedded chert and nodular chert in domestic and ...
www.researchgate.net
Princeton Chert
Location and geologic setting
The Princeton Chert is an interbedded sequence consisting of coal, shale, volcanic ash, and chert in the Allenby Formation References
External links
Fossil protection in British Columbia (Land Act: Reserves, Sections 15, 16 or 17)
Princeton Chert website (ASU)
Chert
Eocene
wikipedia.org
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Bigfork Chert
The Bigfork Chert is a Middle to Late Ordovician geologic formation in the Ouachita Mountains of Arkansas and Oklahoma. The Bigfork Chert is known to produce planerite, turquoise, variscite, and wavellite minerals.
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Hildegard Lächert
During her time in Majdanek, Lächert was recalled as having been extremely brutal. Lächert was released from prison under an amnesty on 7 December 1956.
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Huntersville Chert
The chert has a mottled appearance due to a heterogenous structure of pure and discolored chert. Compared to equivalent formations, the composition of the Huntersville Chert is at least 50% chert.
wikipedia.org
en.wikipedia.org
McCann Hill Chert
The McCann Hill Chert is a geologic formation in Alaska. It preserves fossils dating back to the Devonian period.
wikipedia.org
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