The Lithospheric Thickness Control on the Compositional Variation of Continental Intraplate Basalts: A Demonstration Using the Cenozoic Basalts and Clinopyroxene Megacrysts From Eastern China
The Lithospheric Thickness Control on the Compositional Variation of Continental Intraplate Basalts: A Demonstration Using the Cenozoic Basalts and Clinopyroxene Megacrysts From Eastern China
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岩石圈厚度对大陆板内玄武岩成分变化的控制——以中国东部新生代玄武岩和单斜辉石巨晶为例
DOI：
10.1029/2019jb019315
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发表时间：
2020-03
影响因子：
3.9
通讯作者：
Xiao Yuanyuan
中科院分区：
文献类型：
--
作者：
Sun Pu;Niu Yaoling;Guo Pengyuan;Duan Meng;Wang Xiaohong;Gong Hongmei;Xiao Yuanyuan
Studies on intraplate ocean island basalts have demonstrated the control of lithosphere thickness on the extent of melting and pressure of melt extraction (i.e., the lid effect). However, whether lithosphere thickness also controls the composition of within‐continent basalts remains unclear. Here, we test this hypothesis by studying the Cenozoic basalts contaitning clinopyroxene megacrysts from 10 localities throughout eastern continental China with a north‐south spatial coverage in excess of 2,500 km. Indeed, the geochemical parameters (e.g., abundances and ratios of major and trace elements) correlate well with the depth of the lithosphere‐asthenosphere boundary (LAB) calculated using the clinopyroxene barometry, showing significant lithospheric thickness control on basalt compositions. These observations offer further evidence for melt pooling (a melt rich layer) close beneath the LAB as a “stable magma reservoir” for crystallizing compositionally uniform clinopyroxene megacrysts to be carried by subsequent pulses of melt transport and eruption.
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影响因子：
3.9
作者：
H. Zou;A. Zindler;Xi‐sheng Xu;Q. Qi
通讯作者：
H. Zou;A. Zindler;Xi‐sheng Xu;Q. Qi
DOI：
10.1016/0168-9622(86)90054-0
发表时间：
1986
期刊：
Chemical Geology: Isotope Geoscience Section
影响因子：
--
作者：
Z. Peng;R. Zartman;K. Futa;D. G. Chen
通讯作者：
Z. Peng;R. Zartman;K. Futa;D. G. Chen
华北克拉通火山岩中单斜辉石巨晶的成因：与世界巨晶的对比研究
影响因子：
2.6
作者：
Liu Ya-Dong;Ying Ji-Feng
通讯作者：
Ying Ji-Feng
影响因子：
0.5
作者：
T. Zack;S. Foley;G. Jenner
通讯作者：
T. Zack;S. Foley;G. Jenner
影响因子：
64.8
作者：
Naif, S.;Key, K.;Evans, R. L.
通讯作者：
Evans, R. L.