Results 11 to 20 of about 5,371 (192)
Geophysical Monograph Series, Page 1-26., 2021 Exploring the links between Large Igneous Provinces and dramatic environmental impact
An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Richard E. Ernst +8 more
wiley +14 more sources
RESOURCES, PRODUCTION AND PROCESSING OF BALTOSCANDIAN MULTIMETAL BLACK SHALES; pp. 68–77 [PDF]
Oil 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
Frontiers in Earth Science, 2022 China’s most successful horizon for shale-gas exploration and development is the Upper Ordovician Wufeng Formation through the Lower Silurian Longmaxi Formation in its Upper Yangtze Region. In this study, the Wufeng–Longmaxi Formation black shales in the
Shaoze Zhao +6 more
doaj +1 more source
Journal of Natural Gas Geoscience, 2020 Unconventional hydrocarbon resource has become an interesting field of study; specially for its source rocks which can also be turned into excellent reservoirs to generate and accumulation hydrocarbons. Exploration and production from fine-grained rocks,
Monera Adam Shoieb +4 more
doaj +1 more source
Scientific African, 2022 This study is focused on assessing the contamination levels of heavy metal elements (Cu, Cd, Cr, Ni, and Zn) in black metalliferous shales of the Mamfe basin in South Western Cameroon and identifying the possible pollution sources. Forty (40) black shale
Bokanda Ekoko Eric +9 more
doaj +1 more source
Volcanism‐Triggered Climatic Control on Late Cretaceous Oceans
Geochemistry, Geophysics, Geosystems, 2022 During the Late Cretaceous, Earth's climate oscillated between warm and cool states, and global oceans changed between anoxic and oxic conditions, resulting in black/gray shales and oceanic red beds (ORBs) deposition, respectively.
Ruiyang Sun +6 more
doaj +1 more source
Egyptian Journal of Petroleum, 2017 The Duwi Formation in the Quseir-Safaga area is conformably overlain by the Quseir variegated shales and underlain by the Dakhla shales. Detailed mineralogical and geochemical studies were carried out on the middle member of the black shales of the Duwi ...
Esmat A. Abou El-Anwar
doaj +1 more source
Journal of Palaeogeography, 2017 Lower Cretaceous black shales in coastal southeastern China are of significance to the geological study of the Tethys and Pacific realms and to hydrocarbon exploration of southeastern China and East China Sea.
Guang Hu +8 more
doaj +1 more source
Литосфера, 2017 The features of the Sc, Cr, Co, Ni, Th and rare earth elements distribution in the black shales of the Riphean Murav’inskaya and Velsovskaya formations in southern part of the Lyapin-Kutim anticlinorium (Northern Ural) are analyzed.
Andrey V. Maslov +2 more
doaj +1 more source
Lethaia, EarlyView., 2021 Biomineralization is a generic term used to indicate biological‐mediated mineral formation. In carbonate mineralization, nucleation of crystals can be: (1) controlled directly by the organisms, like in the skeletal formation of most metazoans; (2) induced by microbial communities, by indirect precipitation mediated by their metabolic activities; or (3)
Adriano Guido +4 more
wiley +1 more source