Orogenic quiescence in Earth’s middle age

doi:10.1126/science.abf1876

GSTDTAP > 气候变化

DOI	10.1126/science.abf1876
	Orogenic quiescence in Earth’s middle age
	Ming Tang; Xu Chu; Jihua Hao; Bing Shen
	2021-02-12
发表期刊	Science
出版年	2021
英文摘要	Earth's crust has changed over time as supercontinents formed and broke apart. Tied into this cycle are the building and erosion of high mountains, which are tied to collisions between tectonic plates. Tang et al. use europium anomalies in zircons to estimate the mean thickness of crust over Earth's history. This proxy shows that mountain building has not always been as active as it is today or as it was very early in Earth's history. Mountain building, and the subsequent erosion, was less intense for about a billion years, roughly correlated with a so-called “boring billion” period of biological evolution. Science , this issue p. [728][1] Mountain belts modulate denudation flux and hydrologic processes and are thus fundamental to nutrient cycling on Earth’s surface. We used europium anomalies in detrital zircons to track mountain-building processes over Earth’s history. We show that the average thickness of active continental crust varied on billion-year time scales, with the thickest crust formed in the Archean and Phanerozoic. By contrast, the Proterozoic witnessed continuously decreasing crustal thickness, leaving the continents devoid of high mountains until the end of the eon. We link this gradually diminished orogenesis to the long-lived Nuna-Rodinia supercontinent, which altered the mantle thermal structure and weakened the continental lithosphere. This prolonged orogenic quiescence may have resulted in a persistent famine in the oceans and stalled life’s evolution in Earth’s middle age. [1]: /lookup/doi/10.1126/science.abf1876
领域	气候变化 ; 资源环境
URL	查看原文
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/314091
专题	气候变化资源环境科学
推荐引用方式 GB/T 7714	Ming Tang,Xu Chu,Jihua Hao,等. Orogenic quiescence in Earth’s middle age[J]. Science,2021.
APA	Ming Tang,Xu Chu,Jihua Hao,&Bing Shen.(2021).Orogenic quiescence in Earth’s middle age.Science.
MLA	Ming Tang,et al."Orogenic quiescence in Earth’s middle age".Science (2021).