Rb/Sr ages of rocks from the Chilean metamorphic basement

Fernando Munizaga; Luis Aguirre; Francisco Herve

doi:10.1016/0012-821X(73)90038-1

Rb/Sr ages of rocks from the Chilean metamorphic basement

Fernando Munizaga, Luis Aguirre, Francisco Herve

Engineering School

Research output: Contribution to journal › Article › peer-review

27 Citations (Scopus)

Abstract

Eleven whole rock Rb/Sr age determinations from the Chilean metamorphic basement - formerly considered as Precambrian - define two limiting reference isochrons of 342 and 273 my. Analized rocks are phyllites and schists of sedimentary origin with mineralogical assemblages mainly corresponding to the greenschist facies. Two metamorphic series characterize the Chilean metamorphic basement: an eastern low P/T series, and a western high P/T series. Four of the analyzed samples belong to the former and seven to the latter. The obtained age is interpreted as the age of a main metamorphic episode of the basement. This episode would have taken place in the Upper Paleozoic.

Original language	English
Pages (from-to)	87-92
Number of pages	6
Journal	Earth and Planetary Science Letters
Volume	18
Issue number	1
DOIs	https://doi.org/10.1016/0012-821X(73)90038-1
Publication status	Published - 1973

ASJC Scopus subject areas

Geophysics
Geochemistry and Petrology
Earth and Planetary Sciences (miscellaneous)
Space and Planetary Science

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10.1016/0012-821X(73)90038-1

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title = "Rb/Sr ages of rocks from the Chilean metamorphic basement",

abstract = "Eleven whole rock Rb/Sr age determinations from the Chilean metamorphic basement - formerly considered as Precambrian - define two limiting reference isochrons of 342 and 273 my. Analized rocks are phyllites and schists of sedimentary origin with mineralogical assemblages mainly corresponding to the greenschist facies. Two metamorphic series characterize the Chilean metamorphic basement: an eastern low P/T series, and a western high P/T series. Four of the analyzed samples belong to the former and seven to the latter. The obtained age is interpreted as the age of a main metamorphic episode of the basement. This episode would have taken place in the Upper Paleozoic.",

author = "Fernando Munizaga and Luis Aguirre and Francisco Herve",

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T1 - Rb/Sr ages of rocks from the Chilean metamorphic basement

AU - Munizaga, Fernando

AU - Aguirre, Luis

AU - Herve, Francisco

PY - 1973

Y1 - 1973

N2 - Eleven whole rock Rb/Sr age determinations from the Chilean metamorphic basement - formerly considered as Precambrian - define two limiting reference isochrons of 342 and 273 my. Analized rocks are phyllites and schists of sedimentary origin with mineralogical assemblages mainly corresponding to the greenschist facies. Two metamorphic series characterize the Chilean metamorphic basement: an eastern low P/T series, and a western high P/T series. Four of the analyzed samples belong to the former and seven to the latter. The obtained age is interpreted as the age of a main metamorphic episode of the basement. This episode would have taken place in the Upper Paleozoic.

AB - Eleven whole rock Rb/Sr age determinations from the Chilean metamorphic basement - formerly considered as Precambrian - define two limiting reference isochrons of 342 and 273 my. Analized rocks are phyllites and schists of sedimentary origin with mineralogical assemblages mainly corresponding to the greenschist facies. Two metamorphic series characterize the Chilean metamorphic basement: an eastern low P/T series, and a western high P/T series. Four of the analyzed samples belong to the former and seven to the latter. The obtained age is interpreted as the age of a main metamorphic episode of the basement. This episode would have taken place in the Upper Paleozoic.

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U2 - 10.1016/0012-821X(73)90038-1

DO - 10.1016/0012-821X(73)90038-1

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VL - 18

SP - 87

EP - 92

JO - Earth and Planetary Science Letters

JF - Earth and Planetary Science Letters

IS - 1

ER -

Rb/Sr ages of rocks from the Chilean metamorphic basement

Abstract

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