Highly fractionated I-type granites in NE China (I): geochronology and petrogenesis

被引：669

作者：

Wu, FY

Jahn, BM

Wilde, SA

Lo, CH

Yui, TF

Lin, Q

Ge, WC

Sun, DY

机构：

[1] Univ Rennes 1, CNRS, Geosci Rennes, F-35042 Rennes, France

[2] Jilin Univ, Dept Geol, Changchun 130061, Peoples R China

[3] Curtin Univ Technol, Sch Appl Geol, Perth, WA 6845, Australia

[4] Natl Taiwan Univ, Dept Geol, Taipei 10770, Taiwan

[5] Acad Sinica, Inst Earth Sci, Taipei 11529, Taiwan

来源：

LITHOS | 2003年 / 66卷 / 3-4期

基金：

中国国家自然科学基金;

关键词：

NE China; Central Asian Orogenic Belt; granite; I-type granite; geochronology; geochemistry;

D O I：

10.1016/S0024-4937(02)00222-0

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

The emplacement of the Xinhuatun pluton took place at 184 +/- 4 Ma as revealed by zircon SHRIMP U-Pb data. This is also supported by the slightly younger Rb-Sr whole-rock (WR) isochron age of 173 +/- 3 Ma. A whole-rock (WR) Rb-Sr isochron age of 154 +/- 3 Ma was obtained for the Lamashan pluton, which is interpreted as close to the time of emplacement. The Yiershi pluton was intruded at about 140 Ma as evidenced by a zircon U-Pb age of 137 +/- 2 Ma and WR Rb-Sr isochron age of 143 +/- 5 Ma. Biotite-WR Rb-Sr isochrons and 40Ar/39Ar ages of feldspars allow us to estimate the cooling rate of each pluton. The emplacement of the Xinhuatun pluton took place at 184 +/- 4 Ma as revealed by zircon SHRIMP U-Pb data. This is also supported by the slightly younger Rb-Sr whole-rock (WR) isochron age of 173 +/- 3 Ma. A whole-rock (WR) Rb-Sr isochron age of 154 +/- 3 Ma was obtained for the Lamashan pluton, which is interpreted as close to the time of emplacement. The Yiershi pluton was intruded at about 140 Ma as evidenced by a zircon U-Pb age of 137 +/- 2 Ma and WR Rb-Sr isochron age of 143 +/- 5 Ma. Biotite-WR Rb-Sr isochrons and 40Ar/39Ar ages of feldspars allow us to estimate the cooling rate of each pluton. The emplacement of the Xinhuatun pluton took place at 184 +/- 4 Ma as revealed by zircon SHRIMP U-Pb data. This is also supported by the slightly younger Rb-Sr whole-rock (WR) isochron age of 173 +/- 3 Ma. A whole-rock (WR) Rb-Sr isochron age of 154 +/- 3 Ma was obtained for the Lamashan pluton, which is interpreted as close to the time of emplacement. The Yiershi pluton was intruded at about 140 Ma as evidenced by a zircon U-Pb age of 137 +/- 2 Ma and WR Rb-Sr isochron age of 143 +/- 5 Ma. Biotite-WR Rb-Sr isochrons and 40Ar/39Ar ages of feldspars allow us to estimate the cooling rate of each pluton.

引用

页码：241 / 273

页数：33

共 72 条

[1]

[Anonymous], 1997, GEOCHIMICA

[2]

[Anonymous], GRANITOIDS THEIR MIN

[3]

[Anonymous], 1995, EARTH SCI

[4]

[Anonymous], 1996, ACTA GEOSCIENTICA SI

[5]

[Anonymous], CHINESE J GEOPHYSICS, DOI DOI 10.3321/J.ISSN:0001.5733.2006.05.026

[6]

ARTH JG, 1976, J RES US GEOL SURV, V4, P41

[7] PETROGENESIS OF FELSIC I-TYPE GRANITES - AN EXAMPLE FROM NORTHERN QUEENSLAND [J].

CHAMPION, DC ;

CHAPPELL, BW .

TRANSACTIONS OF THE ROYAL SOCIETY OF EDINBURGH-EARTH SCIENCES, 1992, 83 :115-126

[8]

Chapman S, 1992, TOBACCO CONTROL S, V1, P206

[9]

Chappell B., 1974, PAC GEOL, V8, P173, DOI DOI 10.1046/J.1440-0952.2001.00882.X

[10]

Chappell B.W., 1988, Trans. R. Soc. Edinb. Earth Sci, V79, P71, DOI DOI 10.1017/S0263593300014139

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