The Formation Environment of K-feldspar Porphyritic Granite from E-Mount, Yunnan

DOI

10.2991/gmee-15.2015.18How to use a DOI?

Keywords

component; formation environment; K-feldspar; granite; E-Mount; LA- ICP-MS U-Pb

Abstract

E-mount granite Pluton is located at the southwest part of Yangtze plate . To understand the formation environment of K-feldspar porphyritic granite from E-Mount approaches such as major and trace element analysis and zircon LA- ICP-MS U-Pb dating are used. According to the tests and analysis results, Geochemical shows major elements of w(SiO2) 64.7%~77.41% (> 67%), and A/CNK 0.889~1.234. The zircon age of K-feldspar porphyritic granite is 838.8±6Ma. Finally, infer the forming environment of K-feldspar porphyritic granite that magmatic activity should have been started since 838 Ma, related to post-collisional lithospheric delamination and upwelling of hot asthenosphere, and the tectonic environment of depressurization and warming.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Jin Hu
AU  - Shitao Zhang
AU  - Ying Zhang
PY  - 2015/12
DA  - 2015/12
TI  - The Formation Environment of K-feldspar Porphyritic Granite from E-Mount, Yunnan
BT  - Proceedings of the 2nd International Conference on Green Materials and Environmental Engineering
PB  - Atlantis Press
SP  - 63
EP  - 65
SN  - 2352-5401
UR  - https://doi.org/10.2991/gmee-15.2015.18
DO  - 10.2991/gmee-15.2015.18
ID  - Hu2015/12
ER  -