Diamonds and highly reduced minerals in ophiolitic mantle rocks and chromitites

摘要：

　　Ophiolitic mantle rocks and chromitites are generally thought to have formed near the top of the upper mantle.However, our discovery of diamonds and highly reduced minerals in ophiolitic chromitites significantly challenges this model Some new progresses are summarized as below: 1.A very significant milestone is that the diamonds have now been shown to occur in situ within chromite grains from the Luobusa and Polar Ural chromitites.This discovery has ended all doubts about the diamonds being the result of contamination during sample processing.Previously such contamination could not be conclusively ruled out because all the diamonds had been obtained from mineral separates.

作者: J.S.Yang X.X.Zhang X.Z.Xu Zh.M.Zhang Zh.Huang P.T.Robinson Y.Dilek W.L.Griffin

作者单位: CARMA, State Key Laboratory of Continental Tectonics and Dynamics, Institute of Geology,Chinese Acad China University of Geosciences, Wuhan, 430074, China CARMA, State Key Laboratory of Continental Tectonics and Dynamics, Institute of Geology,Chinese Acad Dept of Geol & Env Earth Science, Miami University, Oxford, OH 45056, USA CCFS/GEMOC, Earth and Planetary Sciences, Macquarie University, NSW 2109 Australia

会议类型: 国际会议

会议名称: International Workshop on Tethyan Orogenesis and Metallogeny in Asia and Cooperation among Institutions of Higher Education(2014年亚洲特提斯造山与成矿国际学术研讨会暨高等教育合作会议)

会议地点: 武汉

会议语种:英文

页码: 117-118

在线出版日期: 2014-10-11（万方平台首次上网日期，不代表论文的发表时间）