气候变化领域集成服务门户(CCPortal): Increasing complexity in magmatic architecture of volcanoes along a waning hotspot

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DOI	10.1038/s41561-023-01156-9
	Increasing complexity in magmatic architecture of volcanoes along a waning hotspot
	Tapu, A. T.; Ubide, T.; Vasconcelos, P. M.
发表日期	2022
ISSN	1752-0894
EISSN	1752-0908
页码	11
英文摘要	Mantle plumes are key drivers of volcanism within tectonic plates. Variations in plume flux and the resulting magma flux are expected within a plume's lifetime, but their impact on volcanic architecture and eruption products and styles remains poorly constrained. Here we combine mineralogy, petrology and geochronology of Earth's longest continental hotspot chain to assess the effects of waning plume strength on magma flux and pre-eruptive magma transport and storage. We focus on Cenozoic age-progressive volcanoes across eastern Australia, divided by a change in plate motion and voluminous volcanism. Northern volcanoes are older and 'long-lived' (3.5-7 million years (Ma)) and erupted high volumes (>800 km(3)) of bimodal magmas (basalts and rhyolites), producing homogeneous, crystal-poor basalts (similar to 3 vol% phenocrysts). Southern volcanoes are smaller (<300 km(3)), 'short-lived' (<= 1.5 Ma) and split into two parallel tracks that erupted more evolved and texturally complex magmas (similar to 12 vol% phenocrysts, internally zoned). These findings imply waning magma flux leads to increasingly complex feeder systems that enhance magma storage and differentiation. Similar trends in hotspot tracks globally suggest that plume and magma flux play a crucial role in the evolution of intraplate volcanoes.
学科领域	Geosciences, Multidisciplinary
语种	英语
WOS研究方向	Geology
WOS记录号	WOS:000955110900002
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/272619
作者单位	University of Queensland
推荐引用方式 GB/T 7714	Tapu, A. T.,Ubide, T.,Vasconcelos, P. M.. Increasing complexity in magmatic architecture of volcanoes along a waning hotspot[J],2022:11.
APA	Tapu, A. T.,Ubide, T.,&Vasconcelos, P. M..(2022).Increasing complexity in magmatic architecture of volcanoes along a waning hotspot.NATURE GEOSCIENCE,11.
MLA	Tapu, A. T.,et al."Increasing complexity in magmatic architecture of volcanoes along a waning hotspot".NATURE GEOSCIENCE (2022):11.