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Choiyoi Group

Choiyoi Group is a Permian and Triassic-aged group of volcano-sedimentary formations in Argentina and Chile. The group bears evidence of bimodal-style volcanism related to an ancient subduction zone that existed along the western margin of the su ...

Divisadero Group

The Divisadero Group is a group of geological formations in the Magallanes Basin or Austral Basin of northwestern Patagonia. It overlies the Coihaique Group. The group is chiefly made up of pyroclastic rocks and lavas of the calc-alkaline magma s ...

Birdsong Sandstone

The Birdsong Sandstone is a Mesozoic geologic formation in Australia. Dinosaur remains are among the fossils that have been recovered from the formation, although none have yet been referred to a specific genus.

Bombo Headland Quarry Geological Site

Bombo Headland Quarry Geological Site is a heritage-listed former quarry and now geological site at Princes Highway, Bombo, Municipality of Kiama, New South Wales, Australia. It is also known as Bombo Quarry. It was added to the New South Wales S ...

Coreena Formation

The Coreena Formation is a Mesozoic geologic formation in Australia. Dinosaur remains are among the fossils that have been recovered from the formation, although none have yet been referred to a specific genus.

Seaham Quarry

Seaham Quarry is a heritage-listed former quarry and now geological site at Torrence Street, Seaham, Port Stephens Council, New South Wales, Australia. It was added to the New South Wales State Heritage Register on 2 April 1999.

Batoka Formation

The Batoka Formation is a geological formation in the Zambezi valley in Botswana, Zambia and Zimbabwe. It is predominantly a volcanic unit comprising mainly basalts. It was formerly thought to contain sand stones containing the dinosaur Vulcanodo ...

Arctomys Formation

The Arctomys Formation is a stratigraphic unit of late Middle Cambrian age. It is present on the western edge of the Western Canada Sedimentary Basin in the Canadian Rockies of Alberta and British Columbia. It was named for Arctomys Peak near Mou ...

Battle Formation

The Battle Formation is a geologic formation of Late Cretaceous age in the Western Canada Sedimentary Basin. It is present throughout much of the central Alberta plains, where it is an important stratigraphic marker in the nonmarine Upper Cretace ...

Bearpaw Formation

The Bearpaw Formation, also called the Bearpaw Shale, is a geologic formation of Late Cretaceous age. It outcrops in the U.S. state of Montana, as well as the Canadian provinces of Alberta and Saskatchewan, and was named for the Bear Paw Mountain ...

Beattie Peaks Formation

The Beattie Peaks Formation is a geologic formation of Early Cretaceous age in the Western Canada Sedimentary Basin that consists primarily of marine mudstone. It is present in the northern foothills of the Canadian Rockies and the adjacent plain ...

Beaver Mines Formation

The Beaver Mines Formation is a stratigraphic unit of Early Cretaceous age in the Western Canada Sedimentary Basin that is present in southwestern Alberta and southeastern British Columbia, Canada. It was established by G.B. Mellon in 1967 who na ...

Beaverhill Lake Group

The Beaverhill Lake Group is a geologic unit of Middle Devonian to Late Devonian age in the Western Canada Sedimentary Basin that is present in the southwestern Northwest Territories, northeastern British Columbia and Alberta. It was named by the ...

Bickford Formation

The Bickford Formation is a geologic formation of Early Cretaceous age in the Western Canada Sedimentary Basin that consists primarily of nonmarine sediments. It is present in the northern foothills of the Canadian Rockies in northeastern British ...

Blomidon Formation

The Blomidon Formation is a unit of Upper Triassic sedimentary rocks, which outcrops in Nova Scotia. At outcrop they reach a maximum thickness of 365 metres, but up to 1.168 metres has been proven from well data and a thickness of up to 2.500 met ...

Blood Reserve Formation

The Blood Reserve Formation, also known as the Blood Reserve Sandstone, is a geologic formation of Late Cretaceous age in the Western Canada Sedimentary Basin. It is present in southwestern Alberta, Canada, and was named for Blood Indian Reserve ...

Bullhead Group

Bullhead Group is a stratigraphic unit of Lower Cretaceous age in the Western Canada Sedimentary Basin of northeastern British Columbia and western Alberta. It was first defined by F.H. McLearn in 1918 as the Bullhead Mountain Formation, but late ...

Cadomin Formation

The Cadomin Formation is a stratigraphic unit of Early Cretaceous age in the western part of the Western Canada Sedimentary Basin. It is extends from southeastern British Columbia through western Alberta to northeastern British Columbia, and it c ...

Clearwater Formation

The Clearwater Formation is a stratigraphic unit of Early Cretaceous age in the Western Canada Sedimentary Basin in northeastern Alberta, Canada. It was first defined by R.G. McConnell in 1893 and takes its name from the Clearwater River near For ...

Earlie Formation

The Earlie Formation is a stratigraphic unit of Middle Cambrian age in the Western Canada Sedimentary Basin that is present beneath the plains of Alberta and eastern Saskatchewan. It was named for Earlie Lake in the County of Vermilion River, Alb ...

Eldon Formation

The Eldon Formation is a stratigraphic unit that is present on the western edge of the Western Canada Sedimentary Basin in the southern Canadian Rockies of southwestern Alberta and southeastern British Columbia. It is a thick sequence of massive, ...

Elk Formation

The Elk Formation is a stratigraphic unit of the Western Canada Sedimentary Basin that is present in southeastern British Columbia and southwestern Alberta. It is probably of Early Cretaceous age, but in some areas its strata could be as old as L ...

Gog Group

The Gog Group is a stratigraphic unit in the Western Canada Sedimentary Basin. It is present in the western main ranges of the Canadian Rockies in Alberta and British Columbia, and in the Cariboo Mountains and in the central Purcell Mountains in ...

Gorman Creek Formation

The Gorman Creek Formation is a geologic formation of Early Cretaceous age in the Western Canada Sedimentary Basin that consists primarily of nonmarine sediments. It is present in the northern foothills of the Canadian Rockies and the adjacent pl ...

Kananaskis Formation

The Kananaskis Formation is a geologic formation that is present on the western edge of the Western Canada Sedimentary Basin in the southern Canadian Rockies of western Alberta. Named after the Kananaskis Range near Banff, it was deposited during ...

Kootenay Group

The Kootenay Group, originally called the Kootenay Formation, is a geologic unit of latest Jurassic to earliest Cretaceous age in the Western Canada Sedimentary Basin that is present in the southern and central Canadian Rockies and foothills. It ...

La Loche Formation

The La Loche Formation is a geologic formation of early Middle Devonian age in the Western Canada Sedimentary Basin. It is present in northeastern Alberta and northwestern Saskatchewan and was first described by A. W. Norris in 1963, who named it ...

Liard Formation

The Liard Formation is a stratigraphic unit of Middle Triassic to Late Triassic age in the Western Canadian Sedimentary Basin that is present in northeastern British Columbia. It takes its name from the Liard River, and was first described from o ...

Luscar Group

The Luscar Group is a geologic unit of Early Cretaceous age in the Western Canada Sedimentary Basin that is present in the foothills of southwestern Alberta. It is subdivided into a series of formations, some of which contain economically signifi ...

Lynx Formation

The Lynx Formation or Lynx Group is a stratigraphic unit of Late Cambrian age in the Western Canada Sedimentary Basin. It is present in the Canadian Rockies of Alberta and British Columbia. It was originally described as the Lynx Formation by Cha ...

Minnes Group

The Minnes Group, originally named the Minnes Formation, is a geologic unit of latest Jurassic to earliest Cretaceous age in the Western Canada Sedimentary Basin. It is present in the northern foothills of the Canadian Rockies and the adjacent pl ...

Monach Formation

The Monach Formation is a geologic formation of Early Cretaceous age in the Western Canada Sedimentary Basin that consists primarily of sandstone. It is present in the northern foothills of the Canadian Rockies and the adjacent plains in northeas ...

Morrissey Formation

The Morrissey Formation is a stratigraphic unit of Late Jurassic age in the Western Canada Sedimentary Basin. It is named for outcrops on Morrissey Ridge, 16 kilometres southeast of Fernie, British Columbia, and is present in southeastern British ...

Mount Whyte Formation

The Mount Whyte Formation is a stratigraphic unit that is present on the western edge of the Western Canada Sedimentary Basin in the southern Canadian Rockies and the adjacent southwestern Alberta plains. It was deposited during Middle Cambrian t ...

Muskeg Formation

The Muskeg Formation is a geologic formation of Middle Devonian age in the Western Canada Sedimentary Basin. It extends from the plains of northwestern Alberta to northeastern British Columbia, and includes important petroleum and natural gas res ...

Pika Formation

The Pika Formation is a stratigraphic unit of Middle Cambrian age that is present on the western edge of the Western Canada Sedimentary Basin in the Canadian Rockies of Alberta and British Columbia. It was named for Pika Peak near Lake Louise in ...

Purcell Supergroup

The Purcell Supergroup is composed primarily of argillites, carbonate rocks, quartzites, and mafic igneous rocks of late Precambrian age. It is present in an area of about 15.000 km 2 in southwestern Alberta and southeastern British Columbia, Can ...

Rencontre Formation

The Rencontre Formation is a geological formation just below the Cambrian-Ediacaran boundary in Newfoundland, deposited in a fault-bounded enclosed basin. U-Pb dates obtained just below its base give a maximum age of 552 ± 3 million years ago. It ...

Schooler Creek Group

The Schooler Creek Group is a stratigraphic unit of Middle to Late Triassic age in the Western Canadian Sedimentary Basin. It is present in northeastern British Columbia. It was named for Schooler Creek, a left tributary of Williston Lake, and wa ...

Skoki Formation

The Skoki Formation is a stratigraphic unit of Early to Middle Ordovician age that is present on the western edge of the Western Canada Sedimentary Basin in the Canadian Rockies of Alberta and British Columbia. It was named for Skoki Mountain nea ...

Snake Indian Formation

The Snake Indian Formation is a stratigraphic unit of Middle Cambrian age that is present on the western edge of the Western Canada Sedimentary Basin in the northern Canadian Rockies of Alberta and British Columbia. It was named for Snake Indian ...

Survey Peak Formation

The Survey Peak Formation is a stratigraphic unit of latest Cambrian to earliest Ordovician age. It is present on the western edge of the Western Canada Sedimentary Basin in the Canadian Rockies of Alberta and British Columbia. It was named for S ...

Titkana Formation

The Titkana Formation is a stratigraphic unit of Middle Cambrian age that is present on the western edge of the Western Canada Sedimentary Basin in the northern Canadian Rockies of Alberta and British Columbia. It was named for Titkana Peak near ...

Toad-Grayling Formation

Toad Formation, Grayling Formation, and Toad-Grayling Formation are obsolete names for the strata of the Early to Middle Triassic Doig and Montney Formations. They were applied in the foothills and Rocky Mountains of northeastern British Columbia ...

Tunnel Mountain Formation

The Tunnel Mountain Formation is a geologic formation that is present on the western edge of the Western Canada Sedimentary Basin in the Canadian Rockies of western Alberta. Named after Tunnel Mountain near Banff, it was deposited during the Earl ...

Whitehorse Formation (Canada)

The Whitehorse Formation is a geologic formation of Late Triassic age. It is present on the western edge of the Western Canada Sedimentary Basin in western Alberta and northeastern British Columbia. It was first described as a member of the Spray ...

Whitemud Formation

The Whitemud Formation is a geologic formation of Late Cretaceous age in the Western Canada Sedimentary Basin. it is present through the plains of southern Saskatchewan, southeastern Alberta and south-central Alberta. Named by N.B. Davis in 1918, ...

Azapa Formation

Azapa Formation is a geological formation in northern Chile made up of gravels of fluvial origin. It is conformably overlain by Oxaya Formation. Azapa Formation is deformed by the Oxaya anticline.

Malleco Formation

Malleco Formation is a geological formation of volcanic origin in the Andes of Araucania Region, Chile. The formation is made up by volcaniclastic rocks, including tuffs, lahars and lavas of Pliocene–Early Pleistocene age. It is considered equiva ...

Nacientes del Teno Formation

Nacientes del Teno Formation is a geological formation that crops out near the uppermost reaches of Teno River, in the Andes of central Chile. The formation is similar to Nacientes del Biobio Formation further south.