首页|Petrology of the Maksyutov Eclogite Blueschist Complex, Southern Urals

Petrology of the Maksyutov Eclogite Blueschist Complex, Southern Urals

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The Maksyutov complex is a part of Precambrian folded belt extending from Urals, North Karakum, Kunlun, Qilian, Qinling to the Dabie-Sulu belt of eastern China. In Maksyutov the eclogites present as individual blocks and boudines embedded within the glaucophane and micaceous schists. Due to the Phanerozoic multi-phase granite intrusions and their resulting superposed metamorphism the data on the age of eclogite are diverse spanning from Early Proterozoic to lower Paleozoic. The mineral compositions of the eclogite are constant with garnet, omphacite and rutile; however, they are often replaced by metamorphic assemblages of epidote-blueschist facies. The garnets are iron rich with f=50-75% (f = Fe2+/(Mg + Fe2+)). Clinopyroxenes are omphacites with Jd 40.3-52.2. According to the garnet clinopyroxene geothermometry and Jadeite + quartz→albite geobarometry T=1060-686 °C, P=2.23-1.416GPa are estimated. The PT trajectory of Maksyutov eclogite corresponds to the upward intrusion of eclogite magma, the final consolidation of the eclogites probably took place in the lower crust.

eclogiteblueschistMaksyutov complexAsia

A.A.MARAKUSHEV、A.V.BOBROV、V.G.BUTVINA、SANG Longkang、LIU Rong

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Department of Petrology, Geological Faculty, Moscow State University, Vorob 'evy Gory, Moscow, 119899,Russia

Faculty of the Earth Sciences, China University of Geosciences, Wuhan, 430074, P. R. China

study was the Russian Foundation for Basic ResearchNational Natural Science Geology and Mineral Resources of ChinaState foreign specialist bureau of China

96-05-00026c,98-05-64462,99-05-39086 and 00-05-642609501102T990423011

2001

大陆动力学(英文版)

大陆动力学(英文版)

ISSN：1006-7825
年,卷(期)：2001.6(2)
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