|
|
|
UDC (553.9.061.4:551.2):(551.762/.763+551.782/.79)(5-15+5-12+571.1/.5) GEODYNAMICAL ASPECTS OF DEEP NAPHTHIDE GENESIS BY EXAMPLES OF DEPOSITS OF MIDDLE EAST, SOUTH-EASTERN ASIA AND SIBERIA
G. N. Cherkasov, G. N. Sharov, V. A. Ashurkov
The paper provides analysis of structural settings and tectonics of the Persian petroleum basin. There, the Red Sea rift can be distinguished as an extension zone with the basic volcanism manifestations characteristic for it. The Persian Gulf and Mesopotamia are considered to be a zone of contraction which had formed due to the subduction of the Arabian Plate under the Iranian one. It is shown that in the stages of tectonomagmatic activation accompanied with the contrast alkaline gabbro-granite magmatism the alkaline granitization sites can form only in the contraction zone. In those sites, the complex hydrocarbon compounds of liquid oil are synthesized from methane and simple HC transmantle fluids. Brief analysis of petroleum deposits of Mesopotamia evidences that they can be syngenetic and epigenetic to host rocks. Liquid oil still remains at the Late-Jurassic – Early Cretaceous and Neogene-Quarternary levels of oil generation. The oil generation conditions are examined by the example of deposits in the Southeast Asia and Siberia. The authors conclude that the recovered Late Jurassic-Early Cretaceous oil is nonrecoverable, unlike the recovered Neogene-Quarternary oil provided that there are active alkaline granitization sites.
Key words: oil, gas, coal, naphtide-aqueous fluid, resources, petroleum region, petroleum basin, alkaline granitization site, gabbro, granite.
|
|
|
|
© SNIIGGiMS, 2017. All rights reserved. | 67 Krasny pr., Novosibirsk, 630091 Russia. Tel.: 73832214947, 73832214980, fax: 73832214947