Next Article in Journal
Crystals from the Powellite-Scheelite Series at the Nanoscale: A Case Study from the Zhibula Cu Skarn, Gangdese Belt, Tibet
Next Article in Special Issue
Columbite U-Pb Geochronology of Kalu’an Lithium Pegmatites in Northern Xinjiang, China: Implications for Genesis and Emplacement History of Rare-Element Pegmatites
Previous Article in Journal
Geology and Genesis of Xianglushan Fe-Cu Orefield in Sichuan (SW China): Evidence from C-O-S-Pb Isotopes
 
 
Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
Journals
Minerals
Volume 9
Issue 6
10.3390/min9060339
minerals-logo
Submit to this Journal Review for this Journal Propose a Special Issue
► Article Menu

Article Menu

share Share announcement Help format_quote Cite question_answer Discuss in SciProfiles
first_page
settings
Order Article Reprints
Font Type:
Arial Georgia Verdana
Font Size:
Aa Aa Aa
Line Spacing:
Column Width:
Background:
Article

Subduction-Induced Fractionated Highly Siderophile Element Patterns in Forearc Mantle

by
Yang Xu
1,2,3 and
Chuan-Zhou Liu
1,2,3,4,*
1
State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China
2
Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266061, China
3
University of Chinese Academy of Sciences, Beijing 100049, China
4
CAS Center for Excellence in Tibetan Plateau Earth Sciences, Beijing 100101, China
*
Author to whom correspondence should be addressed.
Minerals 2019, 9(6), 339; https://doi.org/10.3390/min9060339
Submission received: 17 April 2019 / Revised: 16 May 2019 / Accepted: 30 May 2019 / Published: 1 June 2019
(This article belongs to the Special Issue Accessory Mineral Petrogenesis and Isotopic Robustness)
Browse Figures
Versions Notes

Abstract

Compositions of highly siderophile elements (HSEs) in forearc mantle have been little studied and effects of slab dehydration on their abundances in forearc mantle remains unclear. This study reports two different kinds of HSE patterns for peridotites from a New Caledonia forearc ophiolite. The Group-I samples show relatively flat patterns of Ir-group-platinum-group elements (IPGEs) and enrichment of Pt over Pd. Such patterns imply that interstitial sulfides were significantly removed through melt extraction, whereas sulfides enclosed within silicates were mostly unaffected. Meanwhile, Pt-Fe alloys were generated, resulting in suprachondritic Pt/Pd ratios. In contrast, the Group-II samples display convex HSE patterns and are depleted in all HSEs except for Ru, yielding strongly positive Ru anomalies. This indicates that both enclosed and interstitial sulfides were substantially consumed, whereas chromite was generated to stabilize Ru. Compared to abyssal peridotites, subduction-related peridotites commonly have stronger fractionation in the HSEs. Therefore, the HSE data of mantle peridotites are potentially able to discriminate the tectonic settings of ophiolites.
Keywords: highly siderophile elements (HSEs); subduction zones; forearc mantle; New Caledonia ophiolites highly siderophile elements (HSEs); subduction zones; forearc mantle; New Caledonia ophiolites

Share and Cite

MDPI and ACS Style

Xu, Y.; Liu, C.-Z. Subduction-Induced Fractionated Highly Siderophile Element Patterns in Forearc Mantle. Minerals 2019, 9, 339. https://doi.org/10.3390/min9060339

AMA Style

Xu Y, Liu C-Z. Subduction-Induced Fractionated Highly Siderophile Element Patterns in Forearc Mantle. Minerals. 2019; 9(6):339. https://doi.org/10.3390/min9060339

Chicago/Turabian Style

Xu, Yang, and Chuan-Zhou Liu. 2019. "Subduction-Induced Fractionated Highly Siderophile Element Patterns in Forearc Mantle" Minerals 9, no. 6: 339. https://doi.org/10.3390/min9060339

APA Style

Xu, Y., & Liu, C.-Z. (2019). Subduction-Induced Fractionated Highly Siderophile Element Patterns in Forearc Mantle. Minerals, 9(6), 339. https://doi.org/10.3390/min9060339

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

Article Metrics

Back to TopTop