The Santacrucian age is a period of
geologic time
The geologic time scale or geological time scale (GTS) is a representation of time based on the rock record of Earth. It is a system of chronological dating that uses chronostratigraphy (the process of relating strata to time) and geochronolo ...
(17.5 – 16.3
Ma) within the
Early Miocene
The Early Miocene (also known as Lower Miocene) is a sub-epoch of the Miocene epoch (geology), Epoch made up of two faunal stage, stages: the Aquitanian age, Aquitanian and Burdigalian stages.
The sub-epoch lasted from 23.03 ± 0.05 annum, Ma to ...
epoch of the
Neogene
The Neogene ( ,) is a geologic period and system that spans 20.45 million years from the end of the Paleogene Period million years ago ( Mya) to the beginning of the present Quaternary Period million years ago. It is the second period of th ...
, used more specifically with
SALMA classification in South America. It follows the
Colhuehuapian and precedes the
Friasian age.
Paleo Database: Santacrucian
/ref>
Etymology
The age is named after the Santa Cruz Formation
The Santa Cruz Formation is a geological formation in the Magallanes Basin, Magallanes/Austral Basin in southern Patagonia in Argentina and adjacent areas of Chile. It dates to the late Early Miocene epoch, and is contemporaneous with the eponym ...
in the Austral/Magallanes Basin of southern Patagonia
Patagonia () is a geographical region that includes parts of Argentina and Chile at the southern end of South America. The region includes the southern section of the Andes mountain chain with lakes, fjords, temperate rainforests, and glaciers ...
, Argentina and Chile.
Formations
Fossils
References
Bibliography
;Santa Cruz Formation
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;Aisol Formation
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;Cantaure Formation
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;Castillo Formation
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;Cerro Boleadores Formation
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;Chaguaramas Formation
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;Chilcatay Formation
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;Cura-Mallín Group
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;Gran Bajo del Gualicho Formation
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;Jimol Formation
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;Mariño Formation
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;Pinturas Formation
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;Río Yuca Formation
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{{SALMA
Miocene South America
Neogene Argentina
.017Santacrucian