Geochronology of the pre-Andean metamorphism and magmatism in the Andean Cordillera between latitudes 30° and 36°S

Roberto Caminos, Carlos A. Cingolani, Francisco Hervé, Enrique Linares

Resultado de la investigación: Article

33 Citas (Scopus)

Resumen

In the 30°-36°S section of the Andean Cordillera the pre-Andean basement is composed by metamorphic, igneous, and sedimentary rocks of Precambrian, Paleozoic and Lower Triassic ages. They crop out in the morphostructural units named from east to west: Sierras Pampeanas, Precordillera, Cordillera Frontal and Bloque de San Rafael in Argentina, and Cordillera de la Costa in Chile. Isotopic age determinations of the metamorphic rocks indicate a migration of the metamorphic events from east to west, such as: Precambrian to Lower Paleozoic ages (900 m.y. and 650-400 m.y.) in the Sierras Pampeanas; Lower Paleozoic ages (about 500 m.y.) in the Precordillera and Cordillera Frontal; and Upper Paleozoic to Lower Triassic (?) ages (340-210 m.y.) in the Cordillera de la Costa. These metamorphic belts contain a large variety of mafic and ultramafic rocks. The distribution of the pre-Andean granitoids show no apparent chronological zonation. However, the plutonic activity persisted until the Lower Carboniferous in the Sierras Pampeanas; to the Lower Triassic in the Cordillera Frontal and Precordillera, associated with an important vulcanism which also develops in the Bloque de San Rafael; and until the Jurassic in the Cordillera de la Costa.

Idioma originalEnglish
Páginas (desde-hasta)333-352
Número de páginas20
PublicaciónEarth Science Reviews
Volumen18
N.º3-4
DOI
EstadoPublished - 1982

Huella dactilar

cordillera
geochronology
magmatism
metamorphism
Paleozoic
Triassic
metamorphic rock
Precambrian
ultramafic rock
age determination
mafic rock
igneous rock
zonation
sedimentary rock
Jurassic
crop

ASJC Scopus subject areas

  • Earth-Surface Processes
  • Earth and Planetary Sciences(all)

Citar esto

Caminos, Roberto ; Cingolani, Carlos A. ; Hervé, Francisco ; Linares, Enrique. / Geochronology of the pre-Andean metamorphism and magmatism in the Andean Cordillera between latitudes 30° and 36°S. En: Earth Science Reviews. 1982 ; Vol. 18, N.º 3-4. pp. 333-352.
@article{424d3508aed54df6a1fca61c2a6df0df,
title = "Geochronology of the pre-Andean metamorphism and magmatism in the Andean Cordillera between latitudes 30° and 36°S",
abstract = "In the 30°-36°S section of the Andean Cordillera the pre-Andean basement is composed by metamorphic, igneous, and sedimentary rocks of Precambrian, Paleozoic and Lower Triassic ages. They crop out in the morphostructural units named from east to west: Sierras Pampeanas, Precordillera, Cordillera Frontal and Bloque de San Rafael in Argentina, and Cordillera de la Costa in Chile. Isotopic age determinations of the metamorphic rocks indicate a migration of the metamorphic events from east to west, such as: Precambrian to Lower Paleozoic ages (900 m.y. and 650-400 m.y.) in the Sierras Pampeanas; Lower Paleozoic ages (about 500 m.y.) in the Precordillera and Cordillera Frontal; and Upper Paleozoic to Lower Triassic (?) ages (340-210 m.y.) in the Cordillera de la Costa. These metamorphic belts contain a large variety of mafic and ultramafic rocks. The distribution of the pre-Andean granitoids show no apparent chronological zonation. However, the plutonic activity persisted until the Lower Carboniferous in the Sierras Pampeanas; to the Lower Triassic in the Cordillera Frontal and Precordillera, associated with an important vulcanism which also develops in the Bloque de San Rafael; and until the Jurassic in the Cordillera de la Costa.",
author = "Roberto Caminos and Cingolani, {Carlos A.} and Francisco Herv{\'e} and Enrique Linares",
year = "1982",
doi = "10.1016/0012-8252(82)90043-5",
language = "English",
volume = "18",
pages = "333--352",
journal = "Earth-Science Reviews",
issn = "0012-8252",
publisher = "Elsevier",
number = "3-4",

}

Geochronology of the pre-Andean metamorphism and magmatism in the Andean Cordillera between latitudes 30° and 36°S. / Caminos, Roberto; Cingolani, Carlos A.; Hervé, Francisco; Linares, Enrique.

En: Earth Science Reviews, Vol. 18, N.º 3-4, 1982, p. 333-352.

Resultado de la investigación: Article

TY - JOUR

T1 - Geochronology of the pre-Andean metamorphism and magmatism in the Andean Cordillera between latitudes 30° and 36°S

AU - Caminos, Roberto

AU - Cingolani, Carlos A.

AU - Hervé, Francisco

AU - Linares, Enrique

PY - 1982

Y1 - 1982

N2 - In the 30°-36°S section of the Andean Cordillera the pre-Andean basement is composed by metamorphic, igneous, and sedimentary rocks of Precambrian, Paleozoic and Lower Triassic ages. They crop out in the morphostructural units named from east to west: Sierras Pampeanas, Precordillera, Cordillera Frontal and Bloque de San Rafael in Argentina, and Cordillera de la Costa in Chile. Isotopic age determinations of the metamorphic rocks indicate a migration of the metamorphic events from east to west, such as: Precambrian to Lower Paleozoic ages (900 m.y. and 650-400 m.y.) in the Sierras Pampeanas; Lower Paleozoic ages (about 500 m.y.) in the Precordillera and Cordillera Frontal; and Upper Paleozoic to Lower Triassic (?) ages (340-210 m.y.) in the Cordillera de la Costa. These metamorphic belts contain a large variety of mafic and ultramafic rocks. The distribution of the pre-Andean granitoids show no apparent chronological zonation. However, the plutonic activity persisted until the Lower Carboniferous in the Sierras Pampeanas; to the Lower Triassic in the Cordillera Frontal and Precordillera, associated with an important vulcanism which also develops in the Bloque de San Rafael; and until the Jurassic in the Cordillera de la Costa.

AB - In the 30°-36°S section of the Andean Cordillera the pre-Andean basement is composed by metamorphic, igneous, and sedimentary rocks of Precambrian, Paleozoic and Lower Triassic ages. They crop out in the morphostructural units named from east to west: Sierras Pampeanas, Precordillera, Cordillera Frontal and Bloque de San Rafael in Argentina, and Cordillera de la Costa in Chile. Isotopic age determinations of the metamorphic rocks indicate a migration of the metamorphic events from east to west, such as: Precambrian to Lower Paleozoic ages (900 m.y. and 650-400 m.y.) in the Sierras Pampeanas; Lower Paleozoic ages (about 500 m.y.) in the Precordillera and Cordillera Frontal; and Upper Paleozoic to Lower Triassic (?) ages (340-210 m.y.) in the Cordillera de la Costa. These metamorphic belts contain a large variety of mafic and ultramafic rocks. The distribution of the pre-Andean granitoids show no apparent chronological zonation. However, the plutonic activity persisted until the Lower Carboniferous in the Sierras Pampeanas; to the Lower Triassic in the Cordillera Frontal and Precordillera, associated with an important vulcanism which also develops in the Bloque de San Rafael; and until the Jurassic in the Cordillera de la Costa.

UR - http://www.scopus.com/inward/record.url?scp=0020451354&partnerID=8YFLogxK

U2 - 10.1016/0012-8252(82)90043-5

DO - 10.1016/0012-8252(82)90043-5

M3 - Article

AN - SCOPUS:0020451354

VL - 18

SP - 333

EP - 352

JO - Earth-Science Reviews

JF - Earth-Science Reviews

SN - 0012-8252

IS - 3-4

ER -