Canto del Agua Formation

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, 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]

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

References

^ ^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.

Geology of Chile

Terranes

Arequipa-Antofalla
Chaitenia
Chilenia
Chiloé
Cuyania
Fitz Roy
Madre de Dios
Mejillonia
Patagonia

Sedimentary
formations
and groups

Cretaceous	Baños del Flaco Fm. Cerro Colorado Fm. Chacarilla Fm. Chañarcillo Gp. Coihaique Gp. Divisadero Gp. Dorotea Fm. Hornitos Fm. La Liga Fm. Ñirehuao Fm. Punta del Cobre Fm. Purilactis Gp. Quiriquina Fm. Viñita Fm. Way Gp. Zapata Fm.
Jurassic	Chacarilla Fm. Coihaique Gp. Ibáñez Fm. La Liga Fm. La Negra Fm. Nacientes del Biobío Fm. Nacientes del Teno Fm. Pan de Azúcar Fm. Tobífera Fm.
Triassic	Canto del Agua Fm. Choiyoi Gp. Panguipulli Fm. Santa Juana Fm. Tralcán Fm.