Trace and Rare Earth Element Geochemistry of Black Shales in Triassic Kasimlar Formation, Anamas-Akseki Platform, Western Taurids, Turkey

Kuşcu, Mustafa; Özsoy, Rifat; Özçelik, Orhan; Altunsoy, Mehmet

doi:10.1088/1755-1315/44/4/042012

Cited by 8 publications

(5 citation statements)

References 12 publications

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“…87 The abundance of REEs in coal seams has been examined by numerous researchers. 33,34,87−90 However, there is very little information on the abundance and behavior of REEs in oil shales (Table 5).…”

Section: Discussionmentioning

confidence: 99%

“…In general, the controls on REEs distribution and occurrence in organic-rich sedimentary rocks such as coal appear to be related to the mineralogical composition of the country rock and to the weathering process. 81,87−90…”

Section: Discussionmentioning

confidence: 99%

“…The variation of REEs in sedimentary rocks has been studied by a number of authors. − The REEs are often associated with clay minerals in coal and are likely to be absorbed on the surface of the clay–size fraction , and on minerals such as rutile (Ti), zircon (Zr), monazite (Th), xenotime (Y), and chromite (Cr) . The abundance of REEs in coal seams has been examined by numerous researchers. ,,− However, there is very little information on the abundance and behavior of REEs in oil shales (Table ).…”

Section: Discussionmentioning

confidence: 99%

“…Based on a comparison with coal, the REEs in oil shale are primarily associated with the inorganic fraction. In general, the controls on REEs distribution and occurrence in organic-rich sedimentary rocks such as coal appear to be related to the mineralogical composition of the country rock and to the weathering process. ,− …”

Section: Discussionmentioning

confidence: 99%

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Elemental Composition and Organic Petrology of a Lower Carboniferous-Age Freshwater Oil Shale in Nova Scotia, Canada

Goodarzi¹,

Gentzis

Sanei

et al. 2019

ACS Omega

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A 59 m-thick section of a freshwater oil shale interbedded with marlstone of Lower Carboniferous (Tournaisian) age from the Big Marsh area in Antigonish Basin, Nova Scotia, Canada, was examined using reflected light microscopy, Rock-Eval pyrolysis, X-ray diffractometry analysis, inductively coupled plasma-mass spectrometry for elemental analysis, and prompt γ for boron concentration. The oil shale was deposited in a lacustrine environment based on geology, sedimentology, variation in organic matter, and boron content (28–54 ppm). Organic petrology classified the oil shale into three broadly distinct types. Type A oil shale is a coastal facies shale containing terrestrially derived macerals, such as vitrinite and inertinite, sporinite, with some lamalginite, and amorphous bituminous matrix. Type B oil shale was deposited in a shallow-water facies and contains mostly lamalginite and some vitrinite and sporinite. Type C oil shale is a relatively deep-water facies, associated with open-water Torbanite-type oil shale and contains mostly Botryococcus colonial telalginite. The oil shale is thermally mature (Tmax is 441–443 °C). Total organic carbon (TOC) varies from 5.8 to 7.3 wt %, and the hydrogen index is between 507 and 557 mg HC/g TOC. The rate of sedimentation as determined by the Th/U ratio indicates possibility of three sedimentation periods: an irregular but mostly slow rate of sedimentation from the base of the section up to 68 m, followed by a regular and slow rate between 68 and 53 m, and a regular and fast rate between 53 m and the top of the section. The higher Th/U ratio during deposition of the shallow-water facies was due to the input of allochthonous U. The redox conditions, as reflected in the variation of Cr to Mo, U, and Ni + V, indicate that the oil shale was deposited under suboxic–dysoxic conditions. The high organic productivity by phytoplankton and bacteria is characterized by a low Cr and high V/Cr ratio and suboxic conditions. In contrast, the well-oxygenated and uniform, warm-temperature upper water level supports a dysoxic environment. Variation of Sr/Ca vs Mn/Ca ratios indicates that most samples have low values, a characteristic of colder water and high terrigenous influx. The post-Archean Australian shale (PAAS)-normalized rare earth elements (REEs) follow three trends. Type A oil shale has the highest concentration of total REEs (648 ppm) and light REEs (LREEs, 605 ppm) as compared with type C (269 and 233 ppm), which are less than half of type A. Type B oil shale has the lowest total REEs (184 ppm) and LREEs (152 ppm). The concentration of heavy REEs decreased from 43 ppm in type A oil shale to 36 ppm in type C oil shale. Comparison of PAAS-normalized REEs for the three oil shale types indicates a reduction of the negative Eu anomaly with depth, which is possibly related to sedimentary sorting as a result of accumulation of fine sediments in the deeper water zone of the lake. The concentration of most elements of environmental concern is similar to and/or lower than the world shale. How...

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Elemental Composition and Organic Petrology of a Lower Carboniferous-Age Freshwater Oil Shale in Nova Scotia, Canada

Goodarzi¹,

Gentzis

Sanei

et al. 2019

ACS Omega

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“…The economic value of black shales, not only attributed to its potentiality as oil-producing rocks but also as a source of some trace elements [37,38]. Black shales are important as syngenetic hosts for metal deposits; as Kupferschiefer black shale in Central Europe that enriched with Cu and Pb, Oklo black shale in Africa contain concentration of U.…”

Section: 24-pollutionmentioning

confidence: 99%

Geochemical and Mineralogical Evaluation of Black Shale and its Hydrocarbon Potentiality,Southwest Sinai, Egypt

et al. 2020

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The investigation of new energy sources become one of the world tasks in the last decades. Oil shale is one of the promising energy sources and widespread in many parts of Egypt. So, this work was conducted to investigate hydrocarbon potentiality, geochemistry and environmental impact of Magharet El Maiah Formation black shale, Southwest Sinai. This shale is of Carboniferous age and composed mainly of kaolinite, montmorillonite and illite in a decreasing order with quartz and pyrite as non-clay minerals. They are deposited under oxic non-marine condition. Chemical analysis revealed that paleo-redox elements for the studied area were deposited under oxic environment and subjected to highly intensive chemical weathering. The calculated pollution indices indicated the mostly studied black shale isn't polluted. However, the studied black shale is enriched with some economic trace elements than the UCC and PAAS, especially Pb. All the studied samples are of indigenous origin. The organic richness of the studied samples ranges from fair to excellent total organic carbon content. The kerogen type is IV; the organic matter reaches the overmature stage and can be generate dry gas.

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Trace elemental signatures and mineral chemistry of clays associated with the alteration halos of the Paleoproterozoic U mineralization in Bijawars of the Sonrai Basin, Central India

2019

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Trace and Rare Earth Element Geochemistry of Black Shales in Triassic Kasimlar Formation, Anamas-Akseki Platform, Western Taurids, Turkey

Cited by 8 publications

References 12 publications

Elemental Composition and Organic Petrology of a Lower Carboniferous-Age Freshwater Oil Shale in Nova Scotia, Canada

Elemental Composition and Organic Petrology of a Lower Carboniferous-Age Freshwater Oil Shale in Nova Scotia, Canada

Geochemical and Mineralogical Evaluation of Black Shale and its Hydrocarbon Potentiality,Southwest Sinai, Egypt

Trace elemental signatures and mineral chemistry of clays associated with the alteration halos of the Paleoproterozoic U mineralization in Bijawars of the Sonrai Basin, Central India

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