FLUID-FLOW CONNECTIONS TO BASEMENT ROCKS BELOW SEDIMENTARY BASINS - EVIDENCE FROM THE BASE-METAL DEPOSITS IN IRELAND

被引：3

作者：

DIXON, PR ^{[1
]}

RYE, DM ^{[1
]}

JANECKY, DR ^{[1
]}

机构：

[1] YALE UNIV,DEPT GEOL & GEOPHYS,NEW HAVEN,CT 06520

来源：

GEOPHYSICAL RESEARCH LETTERS | 1991年 / 18卷 / 05期

关键词：

D O I：

10.1029/91GL00953

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Lead isotope systematics in Irish base metal deposits and basement rocks indicate that lead and other metals were derived from local basement rocks with little or no addition from basinal sediments hosting the deposits. Thus, a fluid circulation model involving simple basin brine expulsion and an impermeable boundary at the basin-basement interface cannot be invoked to explain the origin of the mineralization. Production of ore deposits as a result of transport out of the basement would involve a relatively trivial integrated heat addition as compared to the total heat transported within the basin on the time scale of deposit formation.

引用

页码：943 / 946

页数：4

共 18 条

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