Topic
Petrography
About: Petrography is a research topic. Over the lifetime, 7449 publications have been published within this topic receiving 102018 citations.
Papers published on a yearly basis
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TL;DR: The petrographic and mineralogic study of different rock facies on the island of Iile de Groix as discussed by the authors shows that two metamorphic episodes have affected the alkaline basic rocks and associated pelitic schists.
Abstract: The petrographic and mineralogic study of the different rock facies on ile de Groix shows that two metamorphic episodes have affected the alkaline basic rocks and associated pelitic schists. The first is represented by a zonation (west-east): II-III-II-I-II where I= eclogite facies glaucophanites (8,5 bars, 530°C), II=glaucophane-epidote-garnet facies (8 kbars, 500°C), III=greenschist facies containing blue-green amphibole (7,5 kbars, 470°C). The second metamorphic episode has partially transformed these rocks to the albite-chlorite-epidote-blue green amphibole facies (6,5 kbars, 470°C). The variations of
$$P_{O_2 } $$
and
$$P_{{\text{H}}_{\text{2}} {\text{O}}}$$
as they affect local assemblages is detailed.
40 citations
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TL;DR: In this paper, the authors used the spectral properties of the VNIR-SWIR spectral bands to discriminate the hydrothermal altered serpentinized harzburgites of Wadi Hibi area of Northern Oman Mountains and the occurrences of Ni-magnesioferrite, magnetite, pentlandite and awaruite.
40 citations
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01 Jan 1999
39 citations
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TL;DR: Within eastern Kentucky, organic petrographic and geochemical data indicate a southeastwards increase in maturation of the Cleveland Shale Member of the Ohio Shale (Devonian-Mississippian) as mentioned in this paper.
39 citations
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TL;DR: In this paper, the Red (Hong) River bed sediments were collected from its tributaries and main channel and reported the petrographic point counts of framework grains and major oxide compositions as well as organic and inorganic carbon contents.
39 citations