气候变化领域集成服务门户(CCPortal): Composition of continental crust altered by the emergence of land plants

CCPortal

DOI	10.1038/s41561-022-00995-2
	Composition of continental crust altered by the emergence of land plants
	Spencer, Christopher J.; Davies, Neil S.; Gernon, Thomas M.; Wang, Xi; McMahon, William J.; Morrell, Taylor Rae, I; Hincks, Thea; Pufahl, Peir K.; Brasier, Alexander; Seraine, Marina; Lu, Gui-Mei
发表日期	2022
ISSN	1752-0894
EISSN	1752-0908
起始页码	735
结束页码	+
卷号	15 期号:9 页码:14
英文摘要	The evolution of land plants during the Palaeozoic era transformed Earth's biosphere. Because the Earth's surface and interior are linked by tectonic processes, the linked evolution of the biosphere and sedimentary rocks should be recorded as a near-contemporary shift in the composition of the continental crust. To test this hypothesis, we assessed the isotopic signatures of zircon formed at subduction zones where marine sediments are transported into the mantle, thereby recording interactions between surface environments and the deep Earth. Using oxygen and lutetium-hafnium isotopes of magmatic zircon that respectively track surface weathering (time independent) and radiogenic decay (time dependent), we find a correlation in the composition of continental crust after 430 Myr ago, which is coeval with the onset of enhanced complexity and stability in sedimentary systems related to the evolution of vascular plants. The expansion of terrestrial vegetation brought channelled sand-bed and meandering rivers, muddy floodplains and thicker soils, lengthening the duration of weathering before final marine deposition. Collectively, our results suggest that the evolution of vascular plants coupled the degree of weathering and timescales of sediment routing to depositional basins where they were subsequently subducted and melted. The late Palaeozoic isotopic shift of zircon indicates that the greening of the continents was recorded in the deep Earth. Colonization of continents by plants some 430 Myr ago enhanced the complexity of weathering and sedimentary systems, and altered the composition of continental crust, according to statistical assessment of zircon compositions.
学科领域	Geosciences, Multidisciplinary
语种	英语
WOS研究方向	Geology
WOS记录号	WOS:000847284300001
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/272450
作者单位	Queens University - Canada; University of Cambridge; NERC National Oceanography Centre; University of Southampton; University of Aberdeen; China University of Geosciences
推荐引用方式 GB/T 7714	Spencer, Christopher J.,Davies, Neil S.,Gernon, Thomas M.,et al. Composition of continental crust altered by the emergence of land plants[J],2022,15(9):14.
APA	Spencer, Christopher J..,Davies, Neil S..,Gernon, Thomas M..,Wang, Xi.,McMahon, William J..,...&Lu, Gui-Mei.(2022).Composition of continental crust altered by the emergence of land plants.NATURE GEOSCIENCE,15(9),14.
MLA	Spencer, Christopher J.,et al."Composition of continental crust altered by the emergence of land plants".NATURE GEOSCIENCE 15.9(2022):14.