Results 1 to 10 of about 46,126 (273)

Comparisons of the Paleo-Mesoproterozoic large igneous provinces and black shales in the North China and North Australian cratons [PDF]

open access: yesFundamental Research, 2022
Comparisons of large igneous provinces (LIPs) and black shales from different cratons can provide important constraints on Precambrian paleogeographic reconstructions and a better understanding of the environmental effects of large-scale volcanic events.
Shuan-Hong Zhang   +8 more
doaj   +2 more sources

Organic vs inorganic contribution to the chemistry of cretaceous black shales in the Mamfe basin, SW Cameroon. Evidence from geochemistry and statistical analysis [PDF]

open access: yesHeliyon, 2023
The present study focused on evaluating the contribution of both organic and inorganic component to the chemistry of Cretaceous black shales in the Mamfe basin, Sw Cameroon by performing inductively couple plasma spectrometry analyses with the data ...
Bisse Salomon Betrant   +9 more
doaj   +2 more sources

Nitrogen and organic carbon isotope record in Tremadocian highly metalliferous black shales from Baltica [PDF]

open access: goldEstonian Journal of Earth Sciences, 2023
Tremadocian highly metalliferous black shales and associated grey shales from the Aseri PH012B drill core (NE Estonia) in the innermost part of the Baltic Palaeobasin were targeted to record their nitrogen and organic carbon isotope variance combined ...
Mawo Ndiaye   +4 more
doaj   +2 more sources

A non-zircon Hf isotope record in Archean black shales from the Pilbara craton confirms changing crustal dynamics ca. 3 Ga ago [PDF]

open access: yesScientific Reports, 2018
Plate tectonics and associated subduction are unique to the Earth. Studies of Archean rocks show significant changes in composition and structural style around 3.0 to 2.5 Ga that are related to changing tectonic regime, possibly associated with the onset
Yona Nebel-Jacobsen   +3 more
doaj   +2 more sources

Tectonic, foreland-basin origins of Upper Ordovician black gas shales in the Appalachian Basin of eastern United States [PDF]

open access: yesEstonian Journal of Earth Sciences, 2023
Black gas shales are major parts of many foreland-basin sequences and comprise important components of unconformity-bound tectophase cycles, which reflect sedimentary/stratigraphic, flexural responses to deformational loading and relaxation in an orogen.
Frank R. Ettensohn, Gustavo Martins
doaj   +1 more source

Maceral Control on the Hydrocarbon Generation Potential of Lacustrine Shales: A Case Study of the Chang 7 Member of the Triassic Yanchang Formation, Ordos Basin, North China

open access: yesEnergies, 2023
Organic matter (OM) type critically controls the hydrocarbon generation potential and organic pore development in black shales. However, maceral variation in lacustrine shales and its control on hydrocarbon generation potential and organic pore ...
Bei Liu, Juan Teng, Maria Mastalerz
doaj   +1 more source

Phanerozoic environments of black shale deposition and the Wilson Cycle [PDF]

open access: yesSolid Earth, 2012
The spatial and temporal distribution of black shales is related to the development of environments in which they accumulate and to a propitious combination of environmental variables.
J. Trabucho-Alexandre   +2 more
doaj   +1 more source

Paleoenvironmental characteristics and organic matter enrichment mechanisms of the upper Ordovician-lower Silurian organic-rich black shales in the Yangtze foreland basin, South China

open access: yesFrontiers in Earth Science, 2023
The Wufeng Formation-Longmaxi Formation (O3w-S1l1) black shales within the Yangtze foreland basin (South China) hold significant potential as unconventional oil and gas resources.
Liang Zhao   +4 more
doaj   +1 more source

Mechanism of Organic Matter Accumulation in Black Shales of the Yuertusi Formation in the Tarim Basin: Insights From Paleoenvironmental Variation During the Early Cambrian

open access: yesFrontiers in Earth Science, 2022
The paleoenvironment during the Early Cambrian is closely related to the accumulation mechanism of organic matter (OM) from the Lower Cambrian black shales. However, paleoenvironment remains a controversial issue. Here, we reported a lot of detailed data
Yangyang Wang   +3 more
doaj   +1 more source

RESOURCES, PRODUCTION AND PROCESSING OF BALTOSCANDIAN MULTIMETAL BLACK SHALES; pp. 68–77 [PDF]

open access: yesOil Shale, 2011
It has been generally accepted that black shales are oil shales and have to be handled as sources of fuel oil. This attitude has been so prevalent that it is applied even to those thermally mature black shales in Jämtland (Sweden) and Sillamäe (Estonia)
Endel Lippmaa   +2 more
doaj   +1 more source

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