High precision U-Pb zircon ages for Mesozoic igneous rocks from Hong Kong

被引：31

作者：

Sewell, R. J. ^{[1
]}

Davis, D. W. ^{[2
]}

Campbell, S. D. G. ^{[1
]}

机构：

[1] Geotech Engn Off, Civil Engn & Dev Dept, Kowloon, Hong Kong, Peoples R China

[2] Univ Toronto, Dept Geol, Jack Satterly Geochronol Lab, Toronto, ON, Canada

来源：

JOURNAL OF ASIAN EARTH SCIENCES | 2012年 / 43卷 / 01期

关键词：

Hong Kong; U-Pb dating; Mesozoic; Zircon;

D O I：

10.1016/j.jseaes.2011.09.007

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Sixteen new high precision U-Pb zircon ages are reported from Jurassic and Early Cretaceous silicic volcanic and plutonic rocks of Hong Kong. When combined with the existing age dataset, the new ages constrain more tightly the timing of major periods of volcanism and plutonism at 162.6 +/- 4.5 Ma, 146.7 +/- 1.1 Ma, 143.0 +/- 1.0 Ma and 140.8 +/- 0.6 Ma. However, two ages of 151.9 +/- 0.2 Ma and 148.1 +/- 0.2 Ma, from eastern New Territories and southern Hong Kong indicate additional and therefore more continuous, albeit pulsed, magmatic activity than previously thought. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：164 / 175

页数：12

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