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OverviewThe Qinling Orogenic Belt is located in the central of China and distributes in east-west direction, there are large-scale igneous rocks within this belt, and they are very important record for orogenesis. The investigation on the feature of the source and origin is critical for understanding the composition of lower crust in orogenic belt, dynamic process in depth of orogenesis, and crust-mantle interaction during orogenic process. Nonetheless, the studies of the igneous rocks are mainly focused on the intermediate and acid intrusions, minor investigation on the mafic dykes though they can provide useful information on the geodynamic evolution of an area. This study using geochronological, geochemical, and Sr-Nd-Hf isotopic data of the mafic dykes from Gansu and Shaanxi provinces. Based on the systematic study, the main results are as follows: the mafic dykes were derived from the partial melting of an enriched mantle source due to the collision between the North China Craton and southern Qinling block during 446-450 Ma. In addition, the parental magmas of these dykes then fractionated clinopyroxene, Fe-Ti-bearing phases, biotite, and plagioclase, along with crustal contamination. Full Product DetailsAuthor: Liu Shen , Feng Caixia , Lai ShaocongPublisher: LAP Lambert Academic Publishing Imprint: LAP Lambert Academic Publishing Dimensions: Width: 15.20cm , Height: 0.40cm , Length: 22.90cm Weight: 0.100kg ISBN: 9783659369452ISBN 10: 3659369454 Pages: 60 Publication Date: 05 February 2015 Audience: General/trade , General Format: Paperback Publisher's Status: Active Availability: In stock We have confirmation that this item is in stock with the supplier. It will be ordered in for you and dispatched immediately. Table of ContentsReviewsAuthor InformationTab Content 6Author Website:Countries AvailableAll regions |