Canto del Agua Formation

Canto del Agua Formation
Stratigraphic range: Triassic
Canto del Agua Formation; Stratigraphic range: Triassic
Type	Geological formation
Overlies	Llano de Chocolate Beds
Thickness	c. 2,100 m (6,900 ft)
Lithology
Primary	Muddy sandstone, mudstone, conglomeradic sandstone, lapilli tuff, conglomerate, limestone
Other	Grainstone
Location
Coordinates	28.205043°S 70.941828°W
Region	Atacama Region
Country	Chile
	Canto del Agua Formation (Chile)

Canto del Agua Formation (Spanish: Formación Canto del Agua) is a geological formation in the Atacama Region of northern Chile. Its stratigraphy from top to bottom is as follows: mudstone, limestone, sandstone, mudstone, conglomerate, lapilli tuff, conglomeradic sandstone, muddy sandstone.[1] The environment where the sediments of the formation deposited is thought to have been the "submarine section of a coarse-grained fan delta" with other authors adding that the sedimentary basin where the sediments deposited was "bounded by two normal faults of WNW strike, active during deposition".[1] The exact relationship with the underlying Llano de Chocolate Beds is not clear.[1] In some locations the formation overlaps directly on the Punta de Choros Metamorphic Complex.[1]

The type locality of the formation lies next to the Plomiza mine.[1]

References

Salazar, Esteban; Vásquez, Paulina; Vallejos, Daniela; Creixell, Christian; Oliveros, Verónica; Ducea, Mihai M. (2020). "Stratigraphic and provenance analysis of Triassic rock units between 28-29° S, northern Chile: implications on the tectonic and paleogeographic evolution of the southwestern margin of Gondwana". Andean Geology. National Geology and Mining Service. 47 (2). doi:10.5027/andgeoV47n2-3131.

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[Salazal2020-1] Salazar, Esteban; Vásquez, Paulina; Vallejos, Daniela; Creixell, Christian; Oliveros, Verónica; Ducea, Mihai M. (2020). "Stratigraphic and provenance analysis of Triassic rock units between 28-29° S, northern Chile: implications on the tectonic and paleogeographic evolution of the southwestern margin of Gondwana". Andean Geology. National Geology and Mining Service. 47 (2). doi:10.5027/andgeoV47n2-3131.