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A System of Stages for Correlation of Magallanes Basin Sediments

By
M. L. Natland
M. L. Natland
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Gonzalez P. Eduardo
Gonzalez P. Eduardo
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Antonio Cañon
Antonio Cañon
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Mario Ernst
Mario Ernst
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Published:
January 01, 1974

Foraminiferal studies and paleoecologic analysis of the southern Patagonia (Chile) sedimentary sequence suggest that a system of stages, based on a time-stratigraphic consideration, can be used for correlation of Magallanes basin sediments. On the basis of Foraminifera and other characteristics, the following stages have been established for the Upper Jurassic-Cretaceous-Tertiary Magallanes sequence: Rinconian (Oxfordian-Kimmeridgian), Esperanzian (Portlandian-Hauterivian), Pratian (Barremian), Tenerifian (Aptian-Albian), Peninsulian (Albian-Cenomanian), Lazian (Cenomanian-Santonian), Riescoian (Santonian-Maestrichtian), Germanian (Paleocene-Danian), Oazian (Paleocene), Manzanian (lower-middle Eocene), Brunswickian (lower-middle Eocene), Clarencian (upper Eocene), Moritzian (upper Eocene), Cameronian (upper Eocene-lower Oligocene), Rosarian (upper Oligocene-lower Miocene), Miradorian (upper Oligocene-lower Miocene), Gaviotian (Miocene), Sebastinian (Miocene), MacPhearsonian (Miocene), Divisaderian (upper Miocene-lower Pliocene) and Mazian (Pleistocene). Lateral facies variations have been recognized in the Miradorian and Gaviotian stages, showing water shallowing from the southeast in Tierra del Fuego to the northwest in the mainland. It is probable that similar conditions exist in the lower Tertiary stages in the northern part of southern Argentina.

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GSA Memoirs

A System of Stages for Correlation of Magallanes Basin Sediments

M. L. Natland
M. L. Natland
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Eduardo Gonzalez P.
Eduardo Gonzalez P.
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Antonio Canon
Antonio Canon
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Mario Ernst
Mario Ernst
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Geological Society of America
Volume
139
ISBN print:
9780813711393
Publication date:
January 01, 1974

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