气候变化领域集成服务门户(CCPortal): The same and not the same: Ore geology, mineralogy and geochemistry of Rodinia assembly versus other supercontinents

CCPortal

DOI	10.1016/j.earscirev.2019.05.004
	The same and not the same: Ore geology, mineralogy and geochemistry of Rodinia assembly versus other supercontinents
	Liu C.; Runyon S.E.; Knoll A.H.; Hazen R.M.
发表日期	2019
ISSN	0012-8919
卷号	196
英文摘要	It has been long observed that the amalgamation of supercontinents, including Rodinia, is coeval with peaks of U[sbnd]Pb ages of global detrital zircons. However, our new compilation of global geochemical, mineralogical, and ore geologic records shows that the assembly of Rodinia stands out from others, in terms of whole-rock trace element geochemistry, as well as records of mineralogy and ore deposits. During the assembly of Rodinia, Nb, Y, and Zr concentrations were enriched in igneous rocks, with prolific formation of zircon and minerals bearing Th, Nb or Y, and REE-bearing ore deposits. At the same time, many types of ore deposits are relatively poorly represented in Rodinin terranes, including deposits of orogenic gold, porphyry copper, and volcanic hosted massive sulfide deposits, with a corresponding paucity of many minerals (e.g., minerals bearing Au, Sb, Ni) associated with these deposits. We interpret these records as indicating the prevalence of ‘non-arc’ magmatism and a relative lack of subduction-related arc magma preserved in the surviving pieces of the Rodinia supercontinent, distinct from other episodes of supercontinent assembly. We further attribute the prevalence of ‘non-arc’ magmatism to enhanced asthenosphere–lithosphere interactions in the Mesoproterozoic, and speculate that the lack of ‘arc-collisional’ magma may be related to enhanced erosion of Rodinia orogenic belts. © 2019 Elsevier B.V.
语种	英语
scopus关键词	copper; geochemistry; gold; magma; magmatism; massive sulfide; mineralogy; ore deposit; orogenic belt; porphyry; Rodinia
来源期刊	EARTH-SCIENCE REVIEWS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/209848
作者单位	Geophysical Laboratory, Carnegie Institution for Science, Washington, DC 20015, United States; Department of Geology and Geophysics, University of Wyoming, Laramie, WY 82071, United States; Department of Earth and Planetary Sciences, Harvard University, Cambridge, MA 02138, United States
推荐引用方式 GB/T 7714	Liu C.,Runyon S.E.,Knoll A.H.,et al. The same and not the same: Ore geology, mineralogy and geochemistry of Rodinia assembly versus other supercontinents[J],2019,196.
APA	Liu C.,Runyon S.E.,Knoll A.H.,&Hazen R.M..(2019).The same and not the same: Ore geology, mineralogy and geochemistry of Rodinia assembly versus other supercontinents.EARTH-SCIENCE REVIEWS,196.
MLA	Liu C.,et al."The same and not the same: Ore geology, mineralogy and geochemistry of Rodinia assembly versus other supercontinents".EARTH-SCIENCE REVIEWS 196(2019).