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Origin of Mesozoic adakitic intrusive rocks on the Ningzhen area of east China: partial melting of delaminated lower continental crust

Xu, Ji-Feng; Shinjo, Ryuichi; Defant, Marc J; Wang, Qiang; Rapp, Robert

Description

To the best of our knowledge, modern adakites have not been documented in a nonarc environment. We report geochemical and isotopic data for Early Cretaceous Anjishan adakitic intrusive rocks that are in a continental setting unrelated to subduction. The Anjishan adakitic intrusive rocks, which are exposed in the Ningzhen area of east China, have high Sr/Y and La/Yb ratios coupled with low Yb and Y as well as relatively high MgO contents and Mg numbers (Mg#; 0.4-0.6), similar to products from...[Show more]

CollectionsANU Research Publications
Date published: 2002
Type: Journal article
URI: http://hdl.handle.net/1885/52726
Source: Geology
DOI: 10.1130/0091-7613(2002)030<1111:OOMAIR>2.0.CO;2

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