Trace element composition of igneous zircon: a thermal and compositional record of the accumulation and evolution of a large silicic batholith, Spirit Mountain, Nevada

被引：300

作者：

Claiborne, Lily L. ^{[1
]}

Miller, Calvin F. ^{[1
]}

Wooden, Joseph L. ^{[2
]}

机构：

[1] Vanderbilt Univ, Dept Earth & Environm Sci, Nashville, TN 37235 USA

[2] Stanford Univ, Dept Geol & Environm Sci, Stanford, CA 94305 USA

来源：

CONTRIBUTIONS TO MINERALOGY AND PETROLOGY | 2010年 / 160卷 / 04期

基金：

美国国家科学基金会;

关键词：

Zircon; Trace elements; Granite; Crystal mush; Fractionation; Rejuvenation; Ti-in-zircon thermometer; TI-IN-ZIRCON; RARE-EARTH-ELEMENT; NEW-ZEALAND; LONG VALLEY; PARTITION-COEFFICIENTS; NORTHWESTERN ARIZONA; MAGMA GENERATION; RESIDENCE TIMES; RANGE PROVINCE; CRATER LAKE;

D O I：

10.1007/s00410-010-0491-5

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：

Hafnium, U, Th, and REE content of zircons from the Spirit Mountain batholith in southern Nevada correlate with calculated temperatures from the Ti-in-zircon thermometer to support field and petrologic evidence of rejuvenation of crystal mush and melt extraction events during the 2-million year accumulation of the granitoid batholith. Marked variation in zircon composition from sample to sample, from grain to grain within individual samples, and from zone to zone within individual grains documents in detail a history of fluctuating conditions with repeated episodes of replenishment, reheating, crystal mush rejuvenation, fractional crystallization, and melt segregation. The zircons exhibit compositional and thermal variability indicative of variations in host melt composition due to (1) melt rejuvenation, mixing, and fractionation (2) coeval growth of other REE-rich accessory minerals, and possibly (3) fluctuation in fO(2).

引用

页码：511 / 531

页数：21

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