Discovery of a Neoproterozoic granite in the Northern Alxa region, NW China: its age, petrogenesis and tectonic significance

Wen Zhang, Victoria Pease, Qingpeng Meng, Rongguo Zheng, Tonny B. Thomsen, Cora Wohlgemuth-Ueberwasser, Tairan Wu

Publikation: Bidrag til tidsskriftArtikelForskningpeer review

21 Citationer (Scopus)

Abstrakt

A Neoproterozoic granite (Western Huhetaoergai granite) from the Northern Alxa region, southern Central Asia Orogenic Belt (CAOB) is first recognized by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) U-Pb zircon dating (889±8 Ma). It is a highly fractionated potassium-rich calc-alkaline pluton with low ' Nd(t) (-2.6 to -1.1) and high (87Sr/86Sr) t (0.727305-0.735626), and is probably derived from a mantle source and assimilated crustal rocks with very high 87Sr/86Sr. Regional geology implies that it may reflect the existence of a microcontinent, and the formation of the Western Huhetaoergai granite is related to the assembly of Rodinia.

OriginalsprogEngelsk
Sider (fra-til)512-523
Antal sider12
TidsskriftGeological Magazine
Vol/bind153
Udgave nummer3
DOI
StatusUdgivet - 1 maj 2016

Programområde

  • Programområde 4: Mineralske råstoffer

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