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

Research output: Contribution to journalArticleResearchpeer-review

22 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)512-523
Number of pages12
JournalGeological Magazine
Volume153
Issue number3
DOIs
Publication statusPublished - 1 May 2016

Keywords

  • Alxa
  • CAOB
  • granite
  • Neoproterozoic
  • zircon U-Pb dating

Programme Area

  • Programme Area 4: Mineral Resources

Fingerprint

Dive into the research topics of 'Discovery of a Neoproterozoic granite in the Northern Alxa region, NW China: its age, petrogenesis and tectonic significance'. Together they form a unique fingerprint.

Cite this