chert

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Related to Radiolarite: radiolarian chert

chert

(chûrt)
n.
1. A variety of silica that contains microcrystalline quartz.
2. A siliceous rock of chalcedonic or opaline silica occurring in limestone.
[Origin unknown.]
chert′y adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

chert

(tʃɜːt)
n
(Minerals) a microcrystalline form of silica usually occurring as bands or layers of pebbles in sedimentary rock. Formula: SiO2. Varieties include flint, lyddite (Lydian stone). Also called: hornstone
[C17: of obscure origin]
ˈcherty adj
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

chert

(tʃɜrt)

n.
a compact rock consisting essentially of microcrystalline quartz.
[1670–80; orig. uncertain]
chert′y, adj.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.

chert

(chûrt)
A hard, brittle, reddish-brown to green sedimentary rock consisting of very small crystals of quartz.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

chert

A type of sedimentary rock made up of of tiny quartz crystals.
Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun 1. chert - variety of silica containing microcrystalline quartz
taconite - a variety of chert containing magnetite and hematite; mined as a low-grade iron ore
silica, silicon dioxide, silicon oxide - a white or colorless vitreous insoluble solid (SiO2); various forms occur widely in the earth's crust as quartz or cristobalite or tridymite or lechatelierite
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
Translations

chert

n (Min) → Kieselschiefer m, → Feuerstein m, → Hornstein m; (Build) → Gneiszuschlag(stoff) &, Feingranitzuschlag m (für Sichtbeton)
Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007
References in periodicals archive ?
The high Zagros unit (or Crush Zone) has three separate subunits, which consists of the Biston limestone (Upper Cretaceous-Lower Triassic), the Kermanshah ophiolite, and the Bakhtaran radiolarite. This ophiolite is the uppermost part of the thrusted unit, and the thrusting is thought to have occurred during the Maastrichtian [3].
This radiolarite unit has the maximum volume of the rocks of the Noorabad ophiolitic compelex and has expanded from east of Noorabad to Kermanshah that has green to reddish brown colors.
The mineralization in this area is highly firm and generally fractured and folded, developed in banded and lenticular shape, and syngenetic with radiolarite cherts.
Darmik formation of Upper Cretaceous age consists of Boyalik limestone, Akcadag sandstone, and a radiolarite member.
His benchmark paper in 1927, which had been presented at the XIV International Geological Congress in Madrid in 1926, described the field relationships among a series of rocks comprising serpentinite, diabase, and radiolarite. In this paper, he proposed to use the term ophiolite to name this rock association.
Originally used to describe serpentinites, the term ophiolite progressively evolved to designate a field association (rock clan) of peridotites, gabbros, and radiolarites. Early on, the deep ocean origin of this association was recognized.
Some analogies can be found in Alpine deposits related to radiolarite outcrops such as Parsettens and Falotta or Scerscen which, although smaller, developed in a similar way and have approximately the same age.
Calcite is extremely common in cavities in basalt, in fractures in serpentinite, in fractures and cavities in the Calpionella limestone, and in veins in radiolarite. The best specimens, colorless scalenohedra up to 5 cm, were collected in the 1960's at the Gambatesa mine.
These materials are mostly lime, plutonic and radiolarite. The mentioned materials have a thickness of less than 3 meters.
Engineering of the geometrical hydraulic construct of the dam location: a case study of Darian dam
The second category includes the volcanic--sedimentary rocks of lava type, radiolarites, pelagic lime stones, flysch and turbidities that are belong to a time span from upper Triassic to upper Cretaceous and have been formed after Pridotites.
The role of structural and petrological elements in mineralization of hontite and magnesite in Ashin-Naein

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