RUBIDIUM-STRONTIUM GEOCHRONOLOGY OF A TRANSECT OF CHILEAN ANDES BETWEEN LATITUDES 45-DEGREES AND 46-DEGREES S

被引：19

作者：

HALPERN, M ^{[1
]}

FUENZALIDA, R ^{[1
]}

机构：

[1] INST INVESTIGAC GEOL,SANTIAGO,CHILE

来源：

EARTH AND PLANETARY SCIENCE LETTERS | 1978年 / 41卷 / 01期

关键词：

D O I：

10.1016/0012-821X(78)90041-9

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：

Plutons of quartz diorite to adamellite composition give Rb-Sr total-rock and biotite calculated ages of 12 to 176 m.y. along a transect of the Chilean Andes between 45° and 46° S. Miocene biotite dates of quartz diorite from the Puerto Aisen area are interpreted as minimum ages related to probable local structural deformation (faulting). Along a north-south traverse of the Argentine Andes between 40° and 44° S, plutons of similar composition to the Chilean Andes give KAr and RbSr total-rock and mineral dates which range from late Paleozoic to Cretaceous. No systematic unidirectional migration of the radiometric ages is observed. © 1978.

引用

页码：60 / 66

页数：7

共 12 条

[1]

CLARK AH, 1976, 14 GEOL ASS CAN SPEC, P23

[2]

FARRAR E, 1970, EARTH PLANET SC LETT, V10, P60

[3]

HALPERN M, 1978, GEOL SOC AM BULL, V89, P522, DOI 10.1130/0016-7606(1978)89<522:GSORID>2.0.CO

[4]

[5]

HALPERN M, 1972, AN ACAD BRASIL CIE S, V44, P149

[6]

HALPERN M, 1973, EARTH PLANET SCI LET, V18, P87

[7]

Halpern M, 1975, REV ASOC GEOL ARGENT, V30, P180

[8]

JAMES DE, 1976, GEOL SOC AM BULL, V87, P592, DOI 10.1130/0016-7606(1976)87<592:ACVMGI>2.0.CO

[9]

[10]

JAMES DE, 1974, STRONTIUM ISOTOPIC C, P970

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