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A river anticline is a geologic structure that is formed by the focused uplift of rock caused by high erosion rates from large rivers relative to the surrounding areas. [1] An anticline is a fold that is concave down, whose limbs are dipping away from its axis, and whose oldest units are in the middle of the fold. [2]
The anticline is composed of a series of sandstone rock beds and an impermeable rock cap under which vast reserves of oil and gas are trapped. Eight different oil bearing zones along the anticline vary greatly from 3,500 to 12,000 feet.
Chickies Rock, at the west end overlooking the river, is the largest exposed anticline on the East Coast. [2] According to the USGS, the summit of the ridge is 587 feet (179 m) above sea level. [3] Chickies Creek runs along the north side of the ridge towards the western end, while Jones Run runs along the south side towards the western end.
The San Rafael Swell was formed when deeply buried Precambrian rocks faulted, or broke, during the Laramide orogeny, about 60 million years ago. These "basement" rocks below the present-day Swell moved upwards relative to the surrounding areas and caused the overlying sedimentary rocks to fold into a dome-like shape called an anticline. The ...
This river system flowed over a faulted and eroded surface of 1,800–1,620 million-year-old granitic and metamorphic rocks. The river deposits consolidated to form sandstone and conglomerate, and were then buried beneath younger marine sediments, which were laid down when shallow seas covered the region between 1,600–1,070 million years ago.
It features spectacular rock formations, sandstone arches, and high, twisting cliffs. The Red River Gorge lies within the Daniel Boone National Forest in Kentucky. The forest maintains 706,000 ...
Compression from the Laramide event deformed the land in the area to form the up to 5° dipping Bryce Canyon Anticline. All of the Canaan Peak, Pine Hollow, Kaiparowits, and Waheap formations, along with part of the underlying Straight Cliffs, were removed from the anticline's crest by erosion before the Claron Formation was deposited. [9]
Rock River Deputy Treasurer Wilma Hill, a former clerk, has been designated to oversee the Nov. 5 vote. Rock River is a small town of about 1,200 people in Michigan's Upper Peninsula. It is ...