气候变化领域集成服务门户(CCPortal): Global distribution of sediment-hosted metals controlled by craton edge stability

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DOI	10.1038/s41561-020-0593-2
	Global distribution of sediment-hosted metals controlled by craton edge stability
	Hoggard M.J.; Czarnota K.; Richards F.D.; Huston D.L.; Jaques A.L.; Ghelichkhan S.
发表日期	2020
ISSN	17520894
起始页码	504
结束页码	510
卷号	13 期号:7
英文摘要	Sustainable development and the transition to a clean-energy economy drives ever-increasing demand for base metals, substantially outstripping the discovery rate of new deposits and necessitating dramatic improvements in exploration success. Rifting of the continents has formed widespread sedimentary basins, some of which contain large quantities of copper, lead and zinc. Despite over a century of research, the geological structure responsible for the spatial distribution of such fertile regions remains enigmatic. Here, we use statistical tests to compare deposit locations with new maps of lithospheric thickness, which outline the base of tectonic plates. We find that 85% of sediment-hosted base metals, including all giant deposits (>10 megatonnes of metal), occur within 200 kilometres of the transition between thick and thin lithosphere. Rifting in this setting produces greater subsidence and lower basal heat flow, enlarging the depth extent of hydrothermal circulation available for forming giant deposits. Given that mineralization ages span the past two billion years, this observation implies long-term lithospheric edge stability and a genetic link between deep Earth processes and near-surface hydrothermal mineral systems. This discovery provides an unprecedented global framework for identifying fertile regions for targeted mineral exploration, reducing the search space for new deposits by two-thirds on this lithospheric thickness criterion alone. © 2020, Crown.
英文关键词	base metal; craton; geological structure; heat flow; mineral exploration; mineralization; rifting; sedimentary basin; spatial distribution; sustainable development; tectonic plate; Calluna vulgaris
语种	英语
来源期刊	Nature Geoscience
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/206789
作者单位	Department of Earth and Planetary Sciences, Harvard University, Cambridge, MA, United States; Lamont-Doherty Earth Observatory, Columbia University, New York, NY, United States; Geoscience Australia, Canberra, ACT, Australia; Research School of Earth Sciences, Australian National University, Canberra, ACT, Australia; Department of Earth Science and Engineering, Imperial College, London, United Kingdom
推荐引用方式 GB/T 7714	Hoggard M.J.,Czarnota K.,Richards F.D.,et al. Global distribution of sediment-hosted metals controlled by craton edge stability[J],2020,13(7).
APA	Hoggard M.J.,Czarnota K.,Richards F.D.,Huston D.L.,Jaques A.L.,&Ghelichkhan S..(2020).Global distribution of sediment-hosted metals controlled by craton edge stability.Nature Geoscience,13(7).
MLA	Hoggard M.J.,et al."Global distribution of sediment-hosted metals controlled by craton edge stability".Nature Geoscience 13.7(2020).