Please use this identifier to cite or link to this item:
https://hdl.handle.net/1959.11/22681
Title: | Hainan mantle plume produced late Cenozoic basaltic rocks in Thailand, Southeast Asia |
---|---|
Contributor(s): | Yan, Quanshu (author); Shi, Xuefa (author); Metcalfe, Ian (author)![]() |
Publication Date: | 2018 |
Open Access: | Yes |
DOI: | 10.1038/s41598-018-20712-7![]() |
Handle Link: | https://hdl.handle.net/1959.11/22681 |
Abstract: | Intraplate volcanism initiated shortly after the cessation of Cenozoic seafloor spreading in the South China Sea (SCS) region, but the full extent of its influence on the Indochina block has not been well constrained. Here we present major and trace element data and Sr-Nd-Pb-Hf isotope ratios of late Cenozoic basaltic lavas from the Khorat plateau and some volcanic centers in the Paleozoic Sukhothai arc terrane in Thailand. These volcanic rocks are mainly trachybasalts and basaltic trachyandesites. Trace element patterns and Sr-Nd-Pb-Hf isotopic compositions show that these alkaline volcanic lavas exhibit oceanic island basalt (OIB)-like characteristics with enrichments in both large-ion lithophile elements (LILE) and high field strength elements (HFSEs). Their mantle source is a mixture between a depleted Indian MORB-type mantle and an enriched mantle type 2 (EMII). We suggest that the post-spreading intraplate volcanism in the SCS region was induced by a Hainan mantle plume which spread westwards to the Paleozoic Sukhothai arc terrane. |
Publication Type: | Journal Article |
Source of Publication: | Scientific Reports, v.8, p. 1-14 |
Publisher: | Nature Publishing Group |
Place of Publication: | United Kingdom |
ISSN: | 2045-2322 |
Fields of Research (FoR) 2008: | 040202 Inorganic Geochemistry 040313 Tectonics 040203 Isotope Geochemistry |
Fields of Research (FoR) 2020: | 370302 Inorganic geochemistry 370303 Isotope geochemistry |
Socio-Economic Objective (SEO) 2008: | 840199 Mineral Exploration not elsewhere classified |
Socio-Economic Objective (SEO) 2020: | 250399 Mineral exploration not elsewhere classified |
Peer Reviewed: | Yes |
HERDC Category Description: | C1 Refereed Article in a Scholarly Journal |
Appears in Collections: | Journal Article School of Environmental and Rural Science |
Files in This Item:
File | Description | Size | Format |
---|
Items in Research UNE are protected by copyright, with all rights reserved, unless otherwise indicated.