Discovery of Eclogite in the <?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" /><st1:PlaceName w:st="on">Guoganjianian</st1:PlaceName> <st1:PlaceType w:st="on">Mountain</st1:PlaceType>, Central <st1:City w:st="on">Qiangtang Area</st1:City>, <st1:State w:st="on">Northern</st1:State> <st1:country-region w:st="on">Tibet</st1:country-region>, <st1:country-region w:st="on">China</st1:country-region>

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Discovery of Eclogite in the Guoganjianian Mountain, Central Qiangtang Area, Northern Tibet, China

详细信息

责任者：Dong Yongsheng (College of Earth Sciences ; Jilin University ; Changchun 130061 ; China) ; Li Cai
刊名：Geological Bulletin of China
出版年：2009
卷期：28(9)
关键词：榴辉岩 ; eclogite ; 羌塘盆地 ; Qiangtang Basin
页码：p.1197-1200
图表：2 illus., 1 table, 9 refs.
分类号：0802
issnNo：ISSN1671-2552
isbnNo：CN11-4648/P

摘要

The ophiolite and Late Paleozoic low-grade metamorphic rock series have been found in Guoganjianian Mountain, in Longmucuo- Shuanghu- Lancangjiang suture zone. The eclogite is newly found in this area. It occurs as lenses in garnet-muscovite schist, and mineral grains are very fine, ranging from 0.05 mm to 0.1 mm. The eclogite consists of garnet, omphacite, phengite and rutile. Data in this paper indicate that the eclogite was formed under low-temperature condition of 470～520 ℃ and high-pressure of 2.21 ～2.51 GPa. The study on forming process of the eclogite has great significance for the tectonic evolution of Longmucuo - Shuanghu-Lancangjiang suture zone.

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