enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Taconic orogeny - Wikipedia

    en.wikipedia.org/wiki/Taconic_Orogeny

    The "Taconic Unconformity" is an angular unconformity exposed from eastern New York State to the Gaspe peninsula. As the Taconic orogeny subsided in early Silurian time, uplifts and folds in the Hudson Valley region were beveled by erosion. Upon this surface sediments began to accumulate, derived from remaining uplifts in the New England region.

  3. List of orogenies - Wikipedia

    en.wikipedia.org/wiki/List_of_orogenies

    As with other geological phenomena, orogenies are often subject to , type and associated paleogeography. In some (especially older) literature, the term orogeny refers to a long episode of basin formation and deposition of sediments over hundreds of millions of years, ending with deformation (sometimes including metamorphism) of these deposits ...

  4. Appalachian Mountains - Wikipedia

    en.wikipedia.org/wiki/Appalachian_Mountains

    The Taconic orogeny ended after about 60 million years, but built much of the land mass that is now New England and southwestward to Pennsylvania. The Taconic Orogeny was the second of four mountain building plate collisions that contributed to the formation of the Appalachians, culminating in the collision of North America and Africa (see ...

  5. Taconic unconformity - Wikipedia

    en.wikipedia.org/wiki/Taconic_unconformity

    The Taconic Unconformity, near Catskill, NY. The Taconic unconformity is a major unconformity created during the Taconic orogeny, exposed from eastern New York State to the Gaspe peninsula. [1] The orogeny was a long one that comprised multiple bursts; it primarily dated to the end of the Ordovician, and the underlying rocks are primarily this age.

  6. Iapetus Ocean - Wikipedia

    en.wikipedia.org/wiki/Iapetus_Ocean

    In the west, the Iapetus Ocean closed with the Taconic orogeny (480-430 million years ago), when the volcanic island arc collided with Laurentia. Some authors consider the oceanic basin south of the island arc also a part of the Iapetus, this branch closed during the later Acadian orogeny, when Avalonia collided with Laurentia. [citation needed]

  7. Geology of Arizona - Wikipedia

    en.wikipedia.org/wiki/Geology_of_Arizona

    The Taconic orogeny, between 490 and 445 million years ago, the Acadian orogeny, from 410 to 380 million years ago, and the Alleghanian orogeny from 325 to 220 million years ago pushed up towering mountain ranges. Extensive erosion of these mountains shed sediments westward into a shallow sea in Arizona.

  8. Deicke and Millbrig bentonite layers - Wikipedia

    en.wikipedia.org/wiki/Deicke_and_Millbrig...

    The mapped area of the Deicke K-bentonite layer in the United StatesThe Deicke and Millbrig bentonite layers, specifically the potassium bentonite layer, K-bentonite, were formed from a volcanic eruption during the Taconic orogeny during the Late Ordovician on Laurentia, the craton of North America.

  9. Category:Paleozoic orogenies - Wikipedia

    en.wikipedia.org/wiki/Category:Paleozoic_orogenies

    Download as PDF; Printable version; In other projects ... San Rafael orogeny; ... This page was last edited on 18 January 2018, ...