Black shale | Organic-rich, Sedimentary, Facies | Britannica
WEBBlack shale, variety of shale that contains abundant organic matter, pyrite, and sometimes carbonate nodules or layers and, in some locations, concentrations of copper, nickel, uranium, and vanadium.
Shale: Sedimentary Rock - Pictures, Definition & More - Geology.com
WEBBlack organic shales are the source rock for many of the world's most important oil and natural gas deposits. These shales obtain their black color from tiny particles of organic matter that were deposited with the mud from which the shale formed.
Shale - Wikipedia
WEBShale is a fine-grained, clastic sedimentary rock formed from mud that is a mix of flakes of clay minerals (hydrous aluminium phyllosilicates, e.g. kaolin, Al 2 Si 2 O 5 (OH) 4) and tiny fragments (silt -sized particles) of other minerals, especially quartz and calcite. [1]
Shale | Properties, Composition, Formation, Uses - Geology Science
WEBAug 21, 2023 · ‘Black shales’ are dark, as a result of being especially rich in unoxidized carbon. Common in some Paleozoic and Mesozoic strata, black shales were deposited in anoxic, reducing environments, such as in stagnant water columns. Some black shales contain abundant heavy metals such as molybdenum, uranium, vanadium, and zinc.
Black Shale - an overview | ScienceDirect Topics
WEBEarth and Planetary Sciences. Black shale is a dark, thinly laminated sedimentary rock rich in organic matter, sulfides, and redox sensitive trace elements. It can form in various environments and is often associated with phosphorite, serving as a …
Shale: Identification, Characteristics, and More - Rockhound …
WEBBlack Shale. While all shale meets this general description, there is a pretty wide spectrum of shales than can look significantly different from one another. This difference in appearance is primarily a result of varying mineralogy. Color is Driven by Mineralogy.
Shale Rock: Geology, Composition, Uses - ThoughtCo
WEBAug 2, 2020 · Shale is a fine-grained rock made from compacted mud and clay. The defining characteristic of shale is its ability to break into layers or fissility. Black and gray shale are common, but the rock can occur in any color.
Black shales - SpringerLink
WEBJan 1, 2013 · Black Shales are fine grained, generally organic carbon-rich sedimentary rocks that primarily consist of a mixture of clay minerals, quartz silt, organic particles (mostly planktonic algae and plant debris), and kerogen.
Black shale - Its deposition and diagenesis. - USGS Publications …
WEBBlack shale is a dark-colored mudrock containing organic matter that may have generated hydrocarbons in the subsurface or that may yield hydrocarbons by pyrolysis. Many black shale units are enriched in metals severalfold above …
The origin of Cretaceous black shales: a change in the surface …
WEBJul 7, 2015 · Black shale, the subject of this article, is a dark-colored muddy sedimentary rock that is substantially enriched in organic matter. Depending on the grade of thermal maturity, black shales are often referred to as sapropel, bituminous shale, or oil shale.
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