The Horseshoe Canyon Formation is a stratigraphic unit of the Western Canada Sedimentary Basin in southwestern Alberta, part of the Edmonton Group, made up of mudstone, sandstone, carbonaceous shale and coal seams laid down across floodplains, estuarine channels and coal swamps. It dates to the Late Cretaceous, roughly 73.1 to 68 million years ago, spanning the Campanian to early Maastrichtian stages, and takes its name from the badlands around Drumheller, where it crops out extensively along with exposures near Trochu and Edmonton. Its type section at Drumheller measures about 250 meters thick, thickening to more than 500 meters near Calgary, and its coal beds have been mined since 1911 and are now targeted for coalbed methane. The formation has yielded a rich fossil record including the dinosaurs Albertosaurus, Edmontosaurus, Hypacrosaurus and Pachyrhinosaurus, alongside mammals, other reptiles, amphibians, fish and invertebrates.
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Source Horseshoe Canyon Formation (Wikipedia)
Source Horseshoe Canyon Formation (Wikipedia)
Source Horseshoe Canyon Formation (Wikipedia)
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Horseshoe Canyon Formation (Wikipedia)
Caused By: Sedimentation, Lead paragraph
A variety of depositional environments are represented in the succession, including floodplains, estuarine channels, and coal swamps, which have yielded a diversity of fossil material.
Associated With: Cretaceous, Lead paragraph
It is of Late Cretaceous age, Campanian to early Maastrichtian stage (Edmontonian Land-Mammal Age), and is composed of mudstone, sandstone, carbonaceous shales, and coal seams.
Associated With: Coal, Lead paragraph
It is of Late Cretaceous age, Campanian to early Maastrichtian stage (Edmontonian Land-Mammal Age), and is composed of mudstone, sandstone, carbonaceous shales, and coal seams.
Associated With: Sandstone, Lead paragraph
It is of Late Cretaceous age, Campanian to early Maastrichtian stage (Edmontonian Land-Mammal Age), and is composed of mudstone, sandstone, carbonaceous shales, and coal seams.
Associated With: Cretaceous, Lead, age Cretaceous
It is of Late Cretaceous age, Campanian to early Maastrichtian stage (Edmontonian Land-Mammal Age), and is composed of mudstone, sandstone, carbonaceous shales, and coal seams.
Associated With: Mudstone, Lead, rock Mudstone
It is of Late Cretaceous age, Campanian to early Maastrichtian stage (Edmontonian Land-Mammal Age), and is composed of mudstone, sandstone, carbonaceous shales, and coal seams.
Associated With: Sandstone, Lead, rock Sandstone
It is of Late Cretaceous age, Campanian to early Maastrichtian stage (Edmontonian Land-Mammal Age), and is composed of mudstone, sandstone, carbonaceous shales, and coal seams.
Associated With: Shale, Lead, rock Shale
It is of Late Cretaceous age, Campanian to early Maastrichtian stage (Edmontonian Land-Mammal Age), and is composed of mudstone, sandstone, carbonaceous shales, and coal seams.
Associated With: Coal, Lead, rock Coal
It is of Late Cretaceous age, Campanian to early Maastrichtian stage (Edmontonian Land-Mammal Age), and is composed of mudstone, sandstone, carbonaceous shales, and coal seams.
In Discipline: Stratigraphy, Lead paragraph
The Horseshoe Canyon Formation is a stratigraphic unit of the Western Canada Sedimentary Basin in southwestern Alberta
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