Search Results - "Dallmeyer, R. D."

First 40Ar/39Ar age constraints for the Caledonian evolution of the Trans-European suture zone in NE Germany by Dallmeyer, R. D, Giese, U, Glasmacher, U, Pickel, W

“…From three Rugen boreholes (G14, Rugen 5, Loissin 1) across the Caledonian deformation front four Lower Palaeozoic slate samples and three detrital muscovite…”
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Dating deformation and cooling in the Caledonian thrust nappes of North Sutherland, Scotland; insights from 40Ar/39Ar and Rb-Sr chronology by Dallmeyer, R. D, Strachan, R. A, Rogers, G, Watt, G. R, Friend, C. R. L

“…40Ar/39Ar and Rb-Sr mineral ages have been determined from various lithologies exposed in the Caledonian foreland and structurally overlying thrust nappes of…”
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The evolution of illite to muscovite: mineralogical and isotopic data from the Glarus Alps, Switzerland by HUNZIKER, J. C, FREY, M, CLAUER, N, DALLMEYER, R. D, FRIEDRICHSEN, H, FLEHMIG, W, HOCHSTRASSER, K, ROGGWILER, P, SCHWANDER, H

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Cadomian 40Ar/39Ar apparent age spectra of detrital muscovites from the Eastern Alps by Dallmeyer, R. D, Neubauer, F

“…Concentrates of muscovite from the Bischofalm quartzite (late Ordovician) in the Carnic Alps, Austria, gave similarly discordant 40Ar/39Ar age spectra for two…”
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40Ar/39Ar mineral age record in NE Greenland; implications for tectonic evolution of the North Atlantic Caledonides by Dallmeyer, R. D, Strachan, R. A, Henriksen, N

“…Ages determined for basement gneisses and cover sequences exposed in this area range from ∼ 438 to ∼ 370 m.y. (early Silurian-mid-Devonian) and are interpreted…”
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Late Precambrian tectonothermal evolution of the Malverns Complex by Strachan, R. A, Nance, R. D, Dallmeyer, R. D, D'Lemos, R. S, Murphy, J. B, Watt, G. R

“…This variably deformed and metamorphosed late Precambrian calc-alkaline plutonic complex in central England yields 40Ar/39Ar mineral cooling ages which place…”
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40Ar/39Ar ages of detrital muscovite and whole-rock slate/phyllite, Narragansett Basin, RI-MA, USA. implications for rejuvenation during very low-grade metamorphism by DALLMEYER, R. D, TAKASU, A

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40Ar/39Ar Evidence For 1.4 Ga Regional Metamorphism in New Mexico: Implications For Thermal Evolution of Lithosphere in the Southwestern Usa by Karlstrom, K. E., Dallmeyer, R. D., Grambling, J. A.

“…40Ar/39Ar dates recorded by hornblende and muscovite from Proterozoic rocks in northern New Mexico indicate pervasive Mesoproterozoic metamorphism followed by…”
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U-Pb zircon age for the Lagoa augen gneiss, Morais Complex, Portugal; tectonic implications by Dallmeyer, R. D, Tucker, R. D, Ribeiro, A, Pereira, F, Marques, F

“…U-Pb analyses of tips broken from acicular zircons in mylonitized Lagoa augen gneiss indicate a crystallization age of 496+3-2 m.y. Four other zircon fractions…”
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Age and tectonothermal record of Laurentian basement, Caledonides of NE Greenland by Tucker, R. D, Dallmeyer, R. D, Strachan, R. A

“…In Dronning Louise Land, W of the Caledonian thrust zone, U-Pb dates for detrital zircon grains with late Proterozoic-early Palaeozoic foreland cover sequences…”
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A tectonic model for Scandian terrane accretion in the northern Scandinavian Caledonides by Anderson, M. W, Barker, A. J, Bennett, D. G, Dallmeyer, R. D

“…Muscovite and hornblende 40Ar/39Ar ages have been obtained from several structural levels within the Caledonian nappe stack of Troms, N Norway: meaningful ages…”
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Mesoproterozoic Metamorphism and 40Ar/39Ar Thermal History of the 1.4 Ga Priest Pluton, Manzano Mountains, New Mexico by Thompson, Amy G., Grambling, Jeffrey A., Karlstrom, Karl E., Dallmeyer, R. D.

“…Paleoproterozoic supracrustal rocks in the aureole of the $$1.43 \pm 0.01$$ Ga Priest pluton provide evidence for a polyphase Proterozoic metamorphic history…”
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The age of blueschist metamorphism in Anglesey, North Wales; evidence from 40Ar/39Ar mineral dates of the Penmynydd schists by Dallmeyer, R. D, Gibbons, W

“…These schists which occur in a narrow belt extending for approx 20 km across SE Anglesey include several hig-P-low-T lithologies, including metasedimentary…”
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Variscan vs Cadomian tectonothermal activity in northwestern sectors of the Teplá-Barrandian zone, Czech Republic: constraints from 40Ar/39Ar ages by Dallmeyer, R D, Urban, M

“…Five muscovite concentrates from high-grade, pelitic metasedimentary basement rocks exposed in northwestern sectors of the Teplá-Barrandian zone (Czech…”
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(40)Ar/(39)Ar ages of detrital muscovite and whole-rock slate/phyllite, Narragansett Basin, RI-MA, USA: Implications for rejuvenation during very low-grade metamorphism by Dallmeyer, R D, Takasu, A

“…A detailed 40argon/39argon dating program has been carried out on detrital muscovite and whole-rock slate/phyllite within the northwestern Narragansett Basin,…”
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Tectonothermal evolution of the Apuseni Mountains, Romania: Resolution of variscan versus Alpine events with 40Ar/39Ar ages by Dallmeyer, R D, Pana, D I, Neubauer, F, Erdmer, P

“…Polyphase Alpine transcurrent faulting and thrusting in the Apuseni Mountains in Romania resulted in the juxtaposition of contrasting structural units that…”
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Deformation-induced resetting of Rb/Sr and 40Ar/39Ar mineral systems in a low-grade, polymetamorphic terrane (Eastern Alps, Austria) by Müller, Wolfgang, Dallmeyer, R. David, Neubauer, Franz, Thöni, Martin

“…A paradox in dating metamorphic events in low-grade, polymetamorphic terranes is exemplified by the eastern Lower Austroalpine nappes of the Eastern Alps…”
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Tectonothermal chronology of early Cadomian arc development in Guernsey and Sark, Channel Islands by Dallmeyer, R. D, D'Lemos, R. S, Strachan, R. A, Mueller, P. A

“…The Cadomian orogen exposed in Brittany and the Channel Islands comprises a collage of variably displaced terrains which record the late Proterozoic evolution…”
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Conjugate shear zones in the Southern Bohemian Massif (Austria): implications for Variscan and Alpine tectonothermal activity by Brandmayr, Michael, Dallmeyer, R.D., Handler, Robert, Wallbrecher, Eckart

“…Mylonitic fabrics developed within conjugate wrench ductile shear and fault systems in the Southern Bohemian Massif display both dextral (NW-SE-trending…”
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Discussion on tectonothermal chronology of early Cadomian arc development in Guernsey and Sark, Channel Islands by Auvray, B, Peucat, J-J, Brun, J-P, Dallmeyer, R D

“…B. Auvray, J.-J. Peucat & J.-P. Brun write: Dallmeyer et al. (1991a) present new geochronological data (U-Pb zircons, Ar-Ar minerals, Sm-Nd whole rocks)…”
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