THE FATE OF SUBDUCTED CONTINENTAL CRUST: EVIDENCE FROM RECYCLED UHP-UHT MINERALS

被引：15

作者：

Liou, Juhn G. ^{[1
]}

Tsujimori, Tatsuki ^{[2
]}

机构：

[1] Stanford Univ, Dept Geol & Environm Sci, Stanford, CA 94305 USA

[2] Okayama Univ, Inst Study Earths Interior, Pheasant Mem Lab, Misasa, Tottori 6820193, Japan

来源：

ELEMENTS | 2013年 / 9卷 / 04期

关键词：

LUOBUSA OPHIOLITE; OCEANIC-CRUST; PODIFORM CHROMITITES; MANTLE XENOLITHS; SOUTHERN TIBET; DEEP MANTLE; ZIRCONS; DIAMONDS; COESITE; INCLUSIONS;

D O I：

10.2113/gselements.9.4.248

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

Newly recognized occurrences of ultrahigh-pressure minerals in ultrahigh-temperature felsic granulites and in chromitite associated with ophiolite complexes lead to speculation about the recycling of supracrustal materials through deep subduction, mantle upwelling, and return to the Earth's surface. This idea is supported by possible "organic" light carbon isotopes observed in diamond and moissanite in kimberlite xenoliths and chromitite. These findings, presage another renaissance in the study of UHP granulite fades lower-crustal basement and ophiolites and in our understanding of the geodynamics of continental subduction and mantle cycling.

引用

页码：248 / 250

页数：3

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