ORE GENESIS BY EPISODIC DEWATERING OF SEDIMENTARY BASINS - APPLICATION TO GIANT PROTEROZOIC LEAD-ZINC DEPOSITS

被引：0
|
作者：
SAWKINS, FJ
机构：
[1] Dept Geology & Geophysics, Univ of Minnesota, Minneapolis, MN 55455, USA.
来源：
GEOLOGY | 1984年 / 12卷 / 08期
关键词：
Deposits - Lead zinc deposits - Lead compounds - Sedimentology - Sulfur compounds;
D O I：
10.1130/0091-7613(1984)12<451:OGBEDO>2.0.CO;2
中图分类号：
P5 [地质学];
学科分类号：
0709 ; 081803 ;
摘要：
A primary feature of several giant, conformable, sediment-hosted lead-zinc deposits is the occurrence of sulfide ore in a series of discrete lenses interlayered with barren sedimentary units, suggestive of protracted episodic mineralization events. Recently, certain workers have invoked episodic dewatering of basin brines for the formation of Mississippi Valley-type lead-zinc deposits. Thus, each of these two types of major lead-zinc deposits could represent products of a fundamental sedimentary brine expulsion process, the former operating mainly in rift environments, the latter mainly in epicratonic basins.-Author
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页码：451 / 454
页数：4
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