Mininco Formation

Mininco Formation
Mininco Formation
Stratigraphic range: Pliocene
Type	Geological formation
Underlies	Quaternary sediments
Overlies	Huelehueico Formation
Thickness	up to 300 m (980 ft)
Lithology
Primary	Conglomerate, and siltstone, sandstone, claystone
Other	Tuff, coal
Location
Coordinates	37°48′S 72°42′W / 37.8°S 72.7°W
Region	Bío Bío & Araucanía Regions
Country	Chile
Type section
Named for	Mininco River
	Mininco Formation (Chile)

Mininco Formation (Spanish: Formación Mininco) is a geological formation composed of sediments that deposited during the Pliocene in central Chile. Near Angol the formation reaches thicknesses of up to 300 m. The upper strata of the formation contain tuff layers and coal beds that are rich in leaf fossils. Other fossils that have been found in the formation include fresh-water diatoms and bivalves.^[1]

References

^ Elgueta, S.; Rubio, X. (1991). "Estratigrafía del Terciario del sector Occidental de la Depresión Central entre 37° y 38° S, Chile" (PDF). Actas. 6. Congreso Geológico Chileno (in español). Santiago, Chile: Servicio Nacional de Geología y Minería. pp. 723–727. Archived from the original (PDF) on February 2, 2017.

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[1] Elgueta, S.; Rubio, X. (1991). "Estratigrafía del Terciario del sector Occidental de la Depresión Central entre 37° y 38° S, Chile" (PDF). Actas. 6. Congreso Geológico Chileno (in español). Santiago, Chile: Servicio Nacional de Geología y Minería. pp. 723–727. Archived from the original (PDF) on February 2, 2017.

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