Cookies

We use cookies to ensure that we give you the best experience on our website. By continuing to browse this repository, you give consent for essential cookies to be used. You can read more about our Privacy and Cookie Policy.


Durham Research Online
You are in:

The geochemistry of late Mesozoic volcanic rocks from the North China Craton and temporal and spatial constraints on the lithosphere thinning.

Liu, J.J. and Ye, L. and Niu, Y.L. and Guo, P.Y. and Sun, P. and Cui, H.X. (2014) 'The geochemistry of late Mesozoic volcanic rocks from the North China Craton and temporal and spatial constraints on the lithosphere thinning.', Geological journal of China universities., 20 (4). pp. 491-506.

Abstract

The Yuanjiazhuang and Bainaobao volcanic rock suites are of late Mesozoic age located respectively in the east and west of the Daxing'anling-Taihangshan gravity gradient zone. These volcanic rocks display similar characteristics in incompatible trace elements and radiogenic isotopes. They are highly fractionated in rare earth elements (REE) with a high LREEs/HREEs ratio, enriched in large ion lithophile elements (such as Rb, Ba, Th, U, K), relatively depleted in high field strength elements (HFSE: Nb, Ta, Zr, Hf, Ti), high ( 87Sr/86Sr)i and low εNd(t) and εHf(t). All these data suggest that the sources for the two volcanic rock suites are similar and their parental melts must have derived from partial melting of ancient metasomatized mantle lithosphere. Combined with the data in the literature, we propose that the lithospheric thinning beneath the North China Craton happened not only in the east but also to the west of the gradient zone in the late Mesozoic.

Item Type:Article
Keywords:Late Mesozoic volcanic rocks, North China Craton, Lithospheric thinning/destruction, Gravity gradient lineament, Yuanjiazhuang, Siziwangqi, Sr-Nd-Hf isotopes.
Full text:Publisher-imposed embargo
(VoR) Version of Record
File format - PDF
(1196Kb)
Status:Peer-reviewed
Publisher Web site:http://www.cqvip.com/QK/90539X/201404/663619535.html
Date accepted:10 September 2014
Date deposited:23 July 2015
Date of first online publication:December 2014
Date first made open access:No date available

Save or Share this output

Export:
Export
Look up in GoogleScholar