Acadian orogeny


Also found in: Wikipedia.

Acadian orogeny

[ə′kād·ē·ən ȯr′äj·ə·nē]
(geology)
The period of formation accompanied by igneous intrusion that took place during the Middle and Late Devonian in the Appalachian Mountains.
References in periodicals archive ?
2000) considered the Salinic, Acadian, and Neoacadian events to be phases of a diachronous Acadian orogeny.
Upper and lower thrust plates were then subjected to upright folding during the Salinic/early Acadian orogeny (Ludman 2013).
These country rocks were multiply deformed and metamorphosed to amphibolite-facies conditions during the late Silurian-Early Devonian Acadian orogeny (Gerbi and West 2007).
Migration of the Acadian orogeny and foreland basin across the northern Appalachians of Maine and adjacent areas.
Wedging of Ganderia by Avalonia during the initial stages of the Acadian orogeny may have uplifted Ganderia, forming highlands outboard of the Central Maine Basin that served as the source of the Carrabassett Formation sediments.
More studies have been conducted of and more has been written about the Acadian orogeny than any other New England orogenic event (e.
It represents a portion of Avalonia that was accreted to Laurentia during the Acadian orogeny.
This mixed package of rocks was regionally deformed into northeast-trending, open to close, upright folds, and metamorphosed to mainly greenschist facies during the Acadian Orogeny at ~400 [+ or -] 10 Ma (Keppie and Dallmeyer 1987; Kontak et al.
This region was previously thought to have experienced only minor normal fault readjustments after the Middle Devonian Acadian Orogeny.
These plutons reflect the resurgence of granite magma at the same crustal location after a very significant time gap and during the waning stages of the Acadian orogeny.
The Early to Middle Devonian Acadian orogeny is a tectonic event that has traditionally been attributed to the accretion of Avalonia to the North American craton (Osberg 1978; Dallmeyer et al.