The Lewis Overthrust is a geologic thrust fault structure of the Rocky Mountains found within the bordering national parks of Glacier in Montana, United States and Waterton Lakes in Alberta, Canada. The structure was created due to the collision of tectonic plates about 59-75 million years ago that drove a several mile thick wedge of Precambrian rock 50 mi (80 km) eastwards, causing it to overlie softer Cretaceous age rock that is 1300 to 1400 million years younger.
The décollement can be seen from Marias Pass as a thin tan line of rock roughly halfway up Summit Mountain and Little Dog Mountain.
The LewisOverthrust is a geologic thrust fault structure of the Rocky Mountains found within the bordering national parks of Glacier in Montana, United...
the Rocky Mountain Front, a 200 miles (320 km) long overthrust fault, known as the LewisOverthrust, which extends from central Montana into southern Alberta...
extreme southern Alberta, Canada. It was formed as a result of the LewisOverthrust, a geologic thrust fault resulted in the overlying of younger Cretaceous...
Range was initially uplifted beginning 170 million years ago when the LewisOverthrust fault pushed an enormous slap of precambrian rocks 3 mi (4.8 km) thick...
Active 2010 Mexicali M7.2) Laptev Sea Rift Arctic Ocean Rift zone LewisOverthrust Montana, United States Thrust Late Cretaceous to Early Paleocene Liquiñe-Ofqui...
south to about Helena is heavily deformed by faulting, folding, and overthrusting. During the Sevier orogeny mountain-building event about 115 and 55...
through Three Forks, Whitehall the Highland Mountains, and Armstead. The LewisOverthrust is a geologic thrust fault structure of the Rocky Mountains found within...
and over the top of younger rock during the Laramide orogeny. The LewisOverthrust extends over 450 km (280 mi) from Mount Kidd south to Steamboat Mountain...
and over the top of younger rock during the Laramide orogeny. The LewisOverthrust extends over 280 miles (450 km) from Mount Kidd in Alberta, south to...
the Waterton sediments are characterized by a single overlap. The LewisOverthrust allowed sediment Proterozoic to move as a unit, more or less, horizontally...
rock was initially uplifted beginning 170 million years ago when the LewisOverthrust fault pushed an enormous slab of precambrian rocks 3 mi (4.8 km) thick...
and over the top of younger rock during the Laramide orogeny. The LewisOverthrust extends over 280 miles (450 km) from Mount Kidd in Alberta, south to...
This apparent violation of the law of superposition was caused by the LewisOverthrust. The Belt Supergroup rocks host a variety of economically significant...
rock was initially uplifted beginning 170 million years ago when the LewisOverthrust fault pushed an enormous slab of rocks three miles (4.8 km) thick,...
rock was initially uplifted beginning 170 million years ago when the LewisOverthrust fault pushed an enormous slab of precambrian rocks 3 mi (4.8 km) thick...
rock was initially uplifted beginning 170 million years ago when the LewisOverthrust fault pushed an enormous slab of precambrian rocks 3 mi (4.8 km) thick...
rock was initially uplifted beginning 170 million years ago when the LewisOverthrust fault pushed an enormous slab of precambrian rocks 3 mi (4.8 km) thick...
and over the top of younger rock during the Laramide orogeny. The LewisOverthrust extends over 280 miles (450 km) from Mount Kidd in Alberta, south to...
a stratigraphical unit of Cenomanian to early Campanian age in the Lewisoverthrust in the Western Canadian Sedimentary Basin. It takes the name from the...
rock was initially uplifted beginning 170 million years ago when the LewisOverthrust fault pushed an enormous slab of precambrian rocks 3 mi (4.8 km) thick...
rock was initially uplifted beginning 170 million years ago when the LewisOverthrust fault pushed an enormous slab of precambrian rocks 3 mi (4.8 km) thick...
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