The Mayoan ( es, Mayoense) 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 geochro ...
from 11.8 to 10
Ma, within the
Middle to Late Miocene epoch of the
Neogene
The Neogene ( ), informally Upper Tertiary or Late Tertiary, 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 Mya. ...
, used more specifically within the
SALMA classification in South America. It follows the
Laventan
The Laventan ( es, Laventense) age is a period of geologic time (13.8 to 11.8 Ma) within the Middle Miocene epoch of the Neogene, used more specifically within the SALMA classification in South America. It follows the Colloncuran and precedes th ...
and precedes the
Chasicoan age.
Paleo Database: Mayoan
/ref>
Etymology
The age is named after the Río Mayo Formation in the Golfo San Jorge Basin
The Golfo San Jorge Basin ( es, Cuenca del Golfo San Jorge) is a hydrocarbon-rich sedimentary basin located in eastern Patagonia, Argentina. The basin covers the entire San Jorge Gulf and an inland area west of it, having one half located in San ...
of Patagonia
Patagonia () refers to a geographical region that encompasses the southern end of South America, governed by Argentina and Chile. The region comprises the southern section of the Andes Mountains with lakes, fjords, temperate rainforests, and g ...
, Argentina.
Formations
Fossil content
References
Bibliography
;Río Mayo Formation
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;Coquimbo Formation
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;Gran Bajo del Gualicho Formation
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;Huaylas Formation
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;Mauri Formation
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;Navidad Formation
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;Paraná Formation
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;Pebas Formation
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;Pisco Formation
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;Puerto Madryn Formation
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;Urumaco Formation
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;Yecua Formation
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{{SALMA
Miocene South America
Neogene Argentina