GEOCHEMISTRY OF UPPER PROTEROZOIC RIFT-RELATED VOLCANICS, NORTHERN UTAH AND SOUTHEASTERN IDAHO

被引：0

作者：

HARPER, GD ^{[1
]}

LINK, PK ^{[1
]}

机构：

[1] IDAHO STATE UNIV,DEPT GEOL,POCATELLO,ID 83209

来源：

GEOLOGY | 1986年 / 14卷 / 10期

关键词：

Trace elements - Volcanic rocks - Geologic models - Geochemistry;

D O I：

10.1130/0091-7613(1986)14<864:GOUPRV>2.0.CO;2

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

Mafic volcanic rocks associated with Upper Proterozoic diamictites are widespread in western North America. A continental rift setting has been proposed for their origin. Trace-element and REE geochemistry for these volcanic rocks from N Utah and SE Idaho is reported. The analysed samples are high-Ti within-plate basalts, and they vary from transitional tholeiitic-alkaline in the S to alkaline in the N. The geochemistry, together with the geological setting of the volcanic rocks, indicates a rift setting, but the timing of the rifting and its relationship to final continental separation are still unsettled. -L.C.H.

引用

页码：864 / 867

页数：4

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