Canto del Agua Formation

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, conglomeratic 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]

Canto del Agua Formation
Stratigraphic range: Triassic
TypeGeological formation
OverliesLlano de Chocolate Beds
Thicknessc. 2,100 m (6,900 ft)
Lithology
PrimaryMuddy sandstone, mudstone, conglomeratic sandstone, lapilli tuff, conglomerate, limestone
OtherGrainstone
Location
Coordinates28°12′18″S 70°56′31″W / 28.205043°S 70.941828°W / -28.205043; -70.941828
RegionAtacama Region
Country Chile
Canto del Agua Formation is located in Chile
Canto del Agua Formation
Canto del Agua Formation (Chile)

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

References

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  1. ^ a b c d e 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. 47 (2). National Geology and Mining Service. doi:10.5027/andgeoV47n2-3131.