Results 131 to 140 of about 14,392 (168)
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Geochemical characteristics of oils from Taiwan
Journal of Southeast Asian Earth Sciences, 1994Abstract Geochemical studies on a number of oils from Taiwan have shown that they are sourced predominantly from terrigenous organic matter. Biomarker characteristics include the presence of high amounts of long-chain regular isoprenoids, bicyclic sesquiterpanes, diterpanes, low concentrations or absence of tricyclic terpanes, presence of several C ...
J.-N. Oung, R.P. Philp
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HYDROGEOLOGICAL AND GEOCHEMICAL CHARACTERISTICS OF THE STRIPA SITE
1981ABSTRACT The Stripa mine test site, located approximately 200 km west-northwest of Stockholm, Sweden, is the focal point of a detailed fracture-hydrology study. Preliminary results from three of the five main components of this program are discussed in this paper.
J.E. Gale +4 more
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Organic geochemical characteristics of Bulgarian jet
International Journal of Coal Geology, 2017Abstract The paper presents the results of the organic geochemical studies of Bulgarian jet samples of early Jurassic and early Cretaceous age from two deposits located within the Moesian platform and the Balkan tectonic zone. Total organic carbon contents (71 and 78% daf) indicate sub-bituminous coalification rank.
K. Markova +3 more
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Organic geochemical characteristics of coal biogasification
Fuel, 2022kuo Jian +7 more
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The geochemical characteristics of marine volcanic rock
Journal of Central South University of Technology, 1996The geochemical characteristics of keratophyre-spilite series in Kunyang Rift Valley at Yunnan are studied, including main chemical composition, trace element, REE distribution, and alkalinity. The study shows that its geochemical characteristics have close relations with copper and iron deposit.
Xihua Chen, Yiqi Zhao, Lihua Xie
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Geochemical characteristics of Precambrian basaltic greenstones
1990One of the most fundamental questions concerning early Precambrian basic magmas is whether or not they are geochemically the same as those produced in equivalent tectonic settings at the present day. However, the geochemical classification of ancient basic igneous suites on the basis of inferred tectonic setting, and the interpretation of ancient ...
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Geochemical characteristics of collision-zone magmatism
Geological Society, London, Special Publications, 1986Summary This paper reports the results of a systematic geochemical study of intermediate and acid intrusive rocks from a number of continent-continent collision zones of Phanerozoic age. Four groups of intrusions can be recognized, each associated with a particular stage in the tectonic evolution of a collision zone.
Nigel B. W. Harris +2 more
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Geochemical Characteristics of the Nigerian anorogenic province
Geological Journal, 1987The anorogenic granitoids of Nigeria are classic examples of ring complexes associated with migrating mid-plate magmatism. Most complexes represent eroded calderas of once active volcanoes, and range from 1 to 30 km in diameter. Petrology varies from peraluminous biotite granite, through hypersthene and fayalite granites to peralkaline aegirine ...
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Geochemical characteristics of the Daruvar thermal aquifer
2014Thermal waters from Daruvar thermal aquifer have been subject to physical-chemical, chemical and stable isotope analyses and geochemical modeling to obtain the information about water origin and mixing and the results have been presented.
Borović, Staša +2 more
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The Geochemical Characteristics of Marine Oils in China
2021Huang Difan, Zhao Mengjun
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