Plume-lithosphere interaction in generation of the Emeishan flood basalts at the Permian-Triassic boundary
Resource
Geology 23 (10): 889-892
Journal
Geology
Pages
889
Date Issued
1995
Date
1995
Author(s)
Abstract
The Emeishan flood volcanism that erupted at Permian-Triassic boundary time produced a large igneous province of at least 2.5 × 10 5 km 2 in the western margin of the Yangtze craton, southwestern China. The volcanic successions, suggested to have resulted from a starting mantle plume, comprise thick piles of basaltic flows and subordinate picrites and pyroclastics. The picrites, which have high magnesian contents, variable degrees of light rare earth element enrichment and heterogeneous isotope ratios are proposed to have been generated by mixing between the dominant plume-derived magmas and small amounts of lamproitic liquids from the continental lithospheric mantle. -Authors
Type
journal article
File(s)![Thumbnail Image]()
Loading...
Name
02.pdf
Size
346.69 KB
Format
Adobe PDF
Checksum
(MD5):bafb6425265bd516e92e02d8c353c106