Sm-Nd isotopic age and genesis of gabbro xenoliths in Daoxian County, Hunan Province

Autor:	Weiming Fan, Feng Guo, Ge Lin, Yuanxian Lin
Rok vydání:	1997
Předmět:	Multidisciplinary Gabbro Outcrop Asthenosphere Lithosphere Partial melting Geochemistry Xenolith Mesozoic Geology Petrogenesis
Zdroj:	Chinese Science Bulletin. 42:1814-1817
ISSN:	1861-9541 1001-6538
Popis:	The gabbro xenoliths are inferred to form at (224 ± 524) Ma by means of Sm-Nd dating, which reflected the intrusive age or crystallization age of gabbric melts. This event indicates that the region transformed from stable platform stage into Mesozoic intensive tectonomagmatic activity stage. The dynamics originated from the upwelling of asthenosphere and lithospheric thinning. Additionally, according to eNd(T) = + 8.8 ± 0.6 of the gabbro xenoliths, within eNd variation of the MORB at 224 Ma, we know that the gabbro xenoliths are the outcrops of partial melting of the asthenosphere.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::eff15ce956b7fe2f07b81f76b9daeac7 https://doi.org/10.1007/bf02882650 Zobrazit plný text záznamu Full text from SpringerLink