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Acadian orogeny
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Acadian orogeny A phase of mountain building affecting an area from the northern Appalachians in what is now New York State to the Bay of Fundy in maritime Canada (the name refers to the colony of Acadie in that region of French Canada). It occurred in the
Devonian about 380 Ma ago, although...
Related newspaper, magazine, and journal articles from HighBeam Research
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A Late Silurian (Pridolian) age for the Eastport Formation, Maine: a review of the fossil, stratigraphic, and radiometric-age data.
Atlantic Geology
; ABSTRACT The Eastport Formation is part of a larger volcaniclastic sequence (the Coastal Volcanic Belt) that extends from Massachusetts, USA, into New Brunswick, Canada. It represents a portion of Avalonia that was accreted to Laurentia during the Acadian orogeny. For more than thirty years the age
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The development of an intense East Asian summer monsoon disturbance with strong vertical coupling
Monthly Weather Review
; ... 1929-1953. Hoskins, B. J., M. E. McIntyre, and A. W. Robertson, 1985: On the use and significance of isentropic potential-vorticity maps. Quart. J. Roy. Meteor. Soc., 111, 877-946. Kuo, Y.-H., L. Cheng, and R. A. Anthes, 1986: Mesocale analyses of the Sichuan flood ...
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Alleghanian faulting in the southern Gaspe Peninsula of Quebec.
Atlantic Geology
; ABSTRACT Transcurrent faults and associated compressional structures affecting post-Middle Devonian rocks are recognized for the first time in the southern Gaspe Peninsula (Quebec). This region was previously thought to have experienced only minor normal fault readjustments after the Middle
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Complex deformation as a result of strain partitioning in transpression zones: an example from the Leinster Terrane, SE Ireland
Journal of the Geological Society
; Abstract: Coastal exposures of Lower Palaeozoic rocks in SE Ireland provide an excellent opportunity to study structures formed during the sinistrally oblique Early Devonian Acadian orogeny. A highly heterogeneous assemblage of broadly contemporaneous Acadian structures is preserved and includes
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A synopsis of the geology of the Cobequid Highlands, Nova Scotia.
Atlantic Geology
; ... Table 1. [FIGURE 3 OMITTED] The series of maps published by Donohoe and Wallace (1982 ... listed in Table 1 and shown on our 1:50 000 maps to be released by the Nova Scotia Department ... Bennett in fieldwork and the assembly of both maps and the Fieldlog database. The following ...
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A Rheic cause for the Acadian deformation in Europe
Journal of the Geological Society
; Abstract: The Acadian (mid-Devonian) deformation in NW Europe has typically been interpreted as the culminating event of the Silurian closure of the Iapetus Ocean. This view has been challenged by the recognition of an intervening early Devonian transtensional event across part of the assembled
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U-Pb dating of the Musquodoboit Batholith, southern Nova Scotia: evidence for a protracted magmatic-hydrothermal event in a Devonian intrusion.
Atlantic Geology
; ... Geological Survey of Canada, Paper 91-9, pp. 71-111. FORD, K.L., HOLMAN, P.B., GRANT, J.A., & CARSON, J.M. 1992. Radioactivity maps of Nova Scotia. Atlantic Geology, 28, pp. 1-6. GEBAUER, D., & GRUNENFELDER, M. 1979. U-Th-Pb dating of minerals. In Lectures ...
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Geochemistry of Early Devonian calc-alkaline plutons in the Merrimack belt: implications for Mid-Paleozoic terrane relationships in the New England Appalachians.
Atlantic Geology
; A series of northeast-trending plutons extending from northeastern Massachusetts to southeastern Maine intruded the metasedimentary rocks of the Merrimack belt. The Early Devonian Dracut, Sweepstakes, Island Pond, Exeter, and Webhannet plutons are metaluminous and, with the exception of the
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New cladid crinoid (phylum echinodermata) from the Middle Devonian Delaware Limestone, Franklin County, Ohio (1).
The Ohio Journal of Science
; ABSTRACT. A new species of Goniocrinus, G. saettii, is described from the Delaware Limestone of Franklin County, OH. This is the first crinoid described from the Delaware Limestone and the first cladid crinoid described from Devonian limestones of Ohio. This new occurrence suggests that additional
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Geochronology and geodynamics of Scottish granitoids from the late Neoproterozoic break-up of Rodinia to Palaeozoic collision
Journal of the Geological Society
; Abstract: Thirty-seven granitoids from Scotland have been dated using the sensitive high-resolution ion microprobe zircon method. Granitoids were intruded during: (1) crustal stretching at c. 600 Ma after Rodinia broke up (A-types); (2) the Grampian event of crustal thickening when the Midland
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