the many unconformities (gaps) observed in geological strata, the term Great Unconformity is frequently applied to either the unconformity observed by...

The significance of angular unconformity (see below) was shown by James Hutton, who found examples of Hutton's Unconformity at Jedburgh in 1787 and at...

is about 1 billion years (1,000 million years), and is named the Great Unconformity. Besides its occurrence in the Grand Canyon, it is also found west...

Karlstrom, and C Dehler (1999) Grand Canyon Supergroup Six Unconformities Make One Great Unconformity A Record of Supercontinent Assembly and Disassembly. Boatman's...

Unconformity lies at the base of the Sixtymile Formation. This unconformity is either an angular unconformity truncating tilted strata of the Grand Canyon Supergroup...

Hutton, such an unconformity provided evidence for his Plutonist theories of uniformitarianism and the age of Earth. An unconformity is a break in the...

Karlstrom, and C. Dehler (1999) Grand Canyon Supergroup Six Unconformities Make One Great Unconformity A Record of Supercontinent Assembly and Disassembly. Boatman's...

have been provided by the widespread erosion that produced Powell's Great Unconformity. An increase of calcium may also have been caused by erosion of the...

known as the "Great Unconformity" which has been interpreted as a large scale erosional event in the basement rock unit. This unconformity is used to correlate...

period of long-running terrestrial erosion which produced by the Great Unconformity, from 1.1 billion to 510 million years ago. Twelve to 24 kilometers...

Karlstrom, and C Dehler (1998) Grand Canyon Supergroup Six Unconformities Make One Great Unconformity A Record of Supercontinent Assembly and Disassembly Archived...

geological record. This gap is part of a more generalized gap called the Great Unconformity. About 510 million years ago, the granite was again subject to deposition...

forming over this first uplift, resulting in a local expression of the Great Unconformity. At about 500–300 million years ago, the region began to sink and...

Group is a prominent angular unconformity, which is part of the Great Unconformity. The surface of this angular unconformity truncates dipping strata comprising...

in the world known as the Great Unconformity.[citation needed] Located less than one mile northwest of the Great Unconformity on Southington Mountain is...

portal World portal Europa Gaia hypothesis Global catastrophic risks Great Unconformity Interglacial and stadial periods Lake Nyos Pu, J.P. (2016). "Dodging...

Retrieved 3 May 2011. "Hutton's Unconformity". Isle of Arran Heritage Museum. 2014. Retrieved 20 November 2017. "Hutton's Unconformity – Lochranza, Isle of Arran...

later eroded away. The gap in the rock record has been called the Great Unconformity. About 525 million years ago, when northern Arizona was at the bottom...

Limestone formed in the sea was metamorphosed by mafic intrusions. The Great Unconformity is a famous gap in the stratigraphic record, as Arizona experienced...

as, glacial deposits, significant continental erosion called the Great Unconformity, and sedimentary rocks called cap carbonates that form after a deglaciation...

called unconformities by geologists. The Great Unconformity is one of the best examples of an exposed nonconformity, which is a type of unconformity that...

underlying Precambrian rocks forming the Great Unconformity. This contact is either an angular unconformity truncating tilted strata of the Grand Canyon...

p. 7. Gannett (1905), p. 176. "Ouray's History Timeline: From the Great Unconformity to the Utes and Miners". Ouray, Colorado. Archived from the original...

horizontal Tapeats Sandstone (the Tonto Platform, and called the Great Unconformity). "Ochoa Point – 4,761' AZ". Lists of John. Retrieved January 22,...

Geologists, Tulsa, Oklahoma. Rowland, S. (nda) Frenchman Mountain and the Great Unconformity. Department of Geoscience, University of Nevada, Las Vegas, Nevada...

hypothesis with Shanan Peters relating the Cambrian Explosion to the Great Unconformity was featured on the cover of Nature in 2012. Using geochemical and...

coast of Scotland. It is famous in the history of geology for Hutton's Unconformity found in 1788, which James Hutton regarded as conclusive proof of his...

Karlstrom, and C. Dehler (1999) Grand Canyon Supergroup Six Unconformities Make One Great Unconformity A Record of Supercontinent Assembly and Disassembly. Boatman's...

formation contributes to new appreciation of the time of formation of The Great Unconformity in Colorado. She is currently working on Ice sheet erosional Interaction...

Karlstrom, and C. Dehler (1999) Grand Canyon Supergroup Six Unconformities Make One Great Unconformity A Record of Supercontinent Assembly and Disassembly. Boatman's...