Appalachian Geosyncline

Great downbuckle in the Earth's crust in the region of the present Appalachian Mountains.

It was in the Appalachians that James Hall first worked out the geosynclinal theory of mountain building (see geosyncline).

* * *


Universalium. 2010.

Look at other dictionaries:

  • geosyncline — /jee oh sin kluyn/, n. Geol. a portion of the earth s crust subjected to downward warping during a large span of geologic time; a geosynclinal fold. [1890 95; GEO + SYNCLINE] * * * I Linear trough of subsidence of the Earth s crust, in which vast …   Universalium

  • Appalachian Mountains — a mountain range in E North America, extending from S Quebec province to N Alabama. Highest peak, Mt. Mitchell, 6684 ft. (2037 m). Also called Appalachians. * * * Mountain system, eastern North America. The Appalachians, among the oldest… …   Universalium

  • Appalachian — /ap euh lay chee euhn, cheuhn, lach ee euhn, lach euhn/, adj. 1. of or pertaining to the Appalachian Mountains. 2. of or pertaining to the region of Appalachia, its inhabitants, or their culture. 3. Geol. of or pertaining to the orogeny and… …   Universalium

  • Geosyncline — In geology, geosyncline is a term still occasionally used for a subsiding linear trough that was caused by the accumulation of sedimentary rock strata deposited in a basin and subsequently compressed, deformed, and uplifted into a mountain range …   Wikipedia

  • Appalachian orogenic belt — Mountain range that extends more than 1,860 mi (3,000 km) along the eastern margin of North America, from Alabama to Newfoundland. It was formed by the progressive eastward addition of material to the continental margin of North America. The… …   Universalium

  • Ouachita Geosyncline — ▪ geology       a linear trough in the Earth s crust in which rocks of the Paleozoic Era (from 251,000,000 to 542,000,000 years ago) were deposited along the southern margin of North America, from Mississippi to eastern Mexico. Most of the belt… …   Universalium

  • Acadian orogeny — Mountain building event that affected the northern portion of the Appalachian Geosyncline from present day New York to Newfoundland during the Devonian period. The orogeny was most intense in northern New England. Its origin has been ascribed to… …   Universalium

  • Alleghenian orogeny — formerly Appalachian Revolution Mountain building event that affected the Appalachian Geosyncline in the late Permian period (c. 286–248 million years ago). The Alleghenian orogeny is most pronounced in the central and southern Appalachian… …   Universalium

  • Taconic Orogeny — Mountain building event that affected the Appalachian Geosyncline along the eastern coast of the U.S. Evidence for the orogeny is most pronounced in the northern Appalachian Mountains, but its effects can be noted as far away as Tennessee and… …   Universalium

  • Avalonian orogeny — ▪ geology       a mountain building event that affected the eastern portion of the Appalachian Geosyncline in late Precambrian time (Precambrian time occurred from 3.96 billion to 540 million years ago). Evidence for the orogeny consists of… …   Universalium

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.