Alleghenian orogeny

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Alleghenian orogeny

[¦al·ə¦gān·ē·ən ȯ′räj·ə·nē]
(geology)
Pennsylvanian and Early Permian orogenic episode which deformed the rocks of the Appalachian Valley and the Ridge and Plateau provinces.
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References in periodicals archive ?
The Salinic, Acadian, and orogenies dominated these events affecting the entire width of the Appalachian orogen from the most outboard terrane (Meguma) to the Laurentian foreland with the accretion of the Meguma terrane (Fig.
1972, A cross section through the Appalachian orogen in Newfoundland, Excursion A62-C62: XXIV International Geological Congress, Montreal, Canada, 84 p.
In North America, these terranes (Avalonia, Ganderia) are incorporated into the Appalachian Orogen and accreted to Laurentia prior to the amalgamation of Pangaea.
New insights into the Appalachian orogen from geology and geochronology along the Cape Ray fault zone, southwest Newfoundland.
1979, Appalachian orogen in Canada: Canadian Journal of Earth Sciences v.
The Meguma terrane of southern Nova Scotia is the most outboard terrane of the Canadian Appalachian Orogen.
Hence, post-Acadian faults in the Gaspe Peninsula may be local expressions of a regional stress regime that may have affected much of the Canadian Appalachian orogen.
Many events affected the Appalachian orogen in the 60 Ma following the orogenic climax, including granitoid magmatism, strike-slip faulting, basin development and opening of the Atlantic Ocean.
The Norumbega fault system (NFS), originally named as "Norumbega fault" north of Penobscot Bay (Stewart and Wones 1974; Wones 1978), has been recognized recently as one of the largest transcurrent fault systems in the northern Appalachian orogen (Hubbard et al.
The theme of the symposium was timely, with a new geological map of the Appalachian orogen in preparation to replace the 1978 classic by Harold Williams, and the Maine--New Brunswick area, in particular, needs improvement.
In the northern Appalachian orogen, sequences of ophiolite overlain successively by melange and flysch formations are commonly interpreted as terrane suture zones.

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