期刊
GEOSCIENCE FRONTIERS
卷 10, 期 3, 页码 873-883出版社
CHINA UNIV GEOSCIENCES, BEIJING
DOI: 10.1016/j.gsf.2017.05.010
关键词
Himalaya; Geochemistry; Paleogeography; Rifting; Geochronology
资金
- NSERC
- NSF [1119380]
- Directorate For Geosciences [1119380] Funding Source: National Science Foundation
- Division Of Earth Sciences [1119380] Funding Source: National Science Foundation
Orthogneiss within the Paleoproterozoic strata of Lesser Himalayan sequence across the Himalaya has been variably linked to development in a continental arc setting, Indian basement, or a continental rift. New whole rock and trace element geochemical data and U/Pb zircon geochronology indicate that the granitoid protoliths to these rocks were derived from upper crustal sources in the Paleoproterozoic and have within-plate, A-type affinities. This is consistent with their generation in a rifted margin and is compatible with paleogeographic reconstructions that indicate an open boundary for present-day northern India in the Paleoproterozoic. (C) 2017, China University of Geosciences (Beijing) and Peking University. Production and hosting by Elsevier B.V.
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