Way Group
Open-knowledge reference entry
Way Group (Spanish: Grupo Way) is a geologic group of Lower Cretaceous age located in northern Chile. The sediments of the group deposited in Coloso Basin, a small intra-arc basin made up by a half graben. The now inactive Coloso Basin is elongated along a NNW-SSE oriented axis and has its southwestern border made up by faults.
The Way Group is made up of the following arrangement from top to bottom the Tablado Formation made up chiefly of limestone, the conglomerate-gravel-sandstone Lombriz Formation and the conglomerate and breccia dominated Caleta Coloso Formation.
Tabledo Formation
Tableado Formation is the uppermost member of Way Group. It is made up of limestone and shale deposited in the shallow marine conditions of the continental shelf. The limestones contains fossils. It rests conformably on top of Lombriz Formation.
Lombriz Formation
Clasts of epidotized lava are common in the conglomerates of Lombriz Formation. The clasts of Lombriz Formation are made up of andesite and diorite.
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