Výsledky vyhledávání - "A. H. N. Rice"

Caledonian strike-slip terrane accretion in W. Ireland: insights from very low-grade metamorphism (illite–chlorite crystallinity and b0parameter)

Autor: A. H. N. Rice, D. M. Williams

Publikováno v: Geological Magazine. 147:281-298

Analysis of pelites with detrital white-micas in the Clew Bay–Galway Bay segment of the Irish Caledonides indicates that b0data from whole-rock and < 2 μm fractions generally show differences smaller than the errors of the method, irrespective of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e04b4b9e2cb741adeb4ab0910e342e83
https://doi.org/10.1017/s0016756809990446

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Subglacial bedrock welding associated with glacial earthquakes

Autor: Michel Bestmann, A. H. N. Rice, Bernhard Grasemann, F. Langenhorst, Florian Heidelbach

Publikováno v: Journal of the Geological Society. 163:417-420

A c . 635 Ma) glacial striations on a Neoproterozoic sandstone pavement is documented. Only instantaneous solidification could have preserved the breccia in situ . Glacier speeds of c . 0.3 m s −1 would have induced peak flash temperatures sufficie

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fcd3736b4c58f56002f843e39e69d5e0
https://doi.org/10.1144/0016-764920-164

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Glacial influence on Neoproterozoic sedimentation: the Smalfjord Formation, northern Norway - discussion

Autor: A. H. N. Rice

Publikováno v: Sedimentology. 51:1419-1422

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::82e7f2d69602d178c935c8a1d526983f
https://doi.org/10.1111/j.1365-3091.2004.00676.x

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Metadolerite geochronology and dolerite geochemistry from East Finnmark, northern Scandinavian Caledonides

Autor: R. A. Gayer, R. D. Beckinsale, T. Ntaflos, A. H. N. Rice

Publikováno v: Geological Magazine. 141:301-318

Dolerite dykes in the East Finnmark Scandinavian Caledonides form three geochemical suites: Digermulhalvøya–Magerøya – WNW–ESE-trending, c. 337–332 Ma, possibly also c. 293 Ma, continental within-plate; East Varangerhalvøya – NE–SW and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::be5136bc1e88d54959df5eed83cb321d
https://doi.org/10.1017/s001675680300788x

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Evidence for a glacial origin of Neoproterozoic III striations at Oaibaččannjar'ga, Finnmark, northern Norway

Autor: C.-C. Hofmann, A. H. N. Rice

Publikováno v: Geological Magazine. 137:355-366

The origin of the famous late Precambrian striated pavement at Oaibaččannjar'ga (Bigganjargga), northern Norway, remains controversial. Most investigators have accepted a glacial formation, but some prefer a soft-sediment mechanism. However, a newl

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::16b1289c1cc13437ff9a98d1a7f8c10a
https://doi.org/10.1017/s0016756800004222

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Umbers, ocean crust and the Irish Caledonides: terrane transpression and the morphology of the Laurentian margin

Autor: J. Harkin, A. H. N. Rice, D. M. Williams

Publikováno v: Journal of the Geological Society. 154:829-838

The Clew Bay Complex of western Ireland contains a variety of rock types. These include schists possibly of Dalradian association, amphibolites and serpentinites of unknown age, cherts, volcanic rocks and graded gabbros of mid to upper Ordovician age

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f83d802407474519a8f31fb4c69055f8
https://doi.org/10.1144/gsjgs.154.5.0829

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Interlaboratory standardization and calibration of day mineral crystallinity and crystallite size data

Autor: A. H. N. Rice, L. N. Warr

Publikováno v: Journal of Metamorphic Geology. 12:141-152

Clay mineral crystallinity and crystallite (domain) size data determined by X-ray diffraction (XRD) are methods extensively used in the characterization of very low-grade metamorphic conditions. However, the lack of sufficient interlaboratory standar

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::994c62af039f58dc1cf5a0a3c87474cd
https://doi.org/10.1111/j.1525-1314.1994.tb00010.x

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Porphyroblast textural sector-zoning and matrix displacement

Autor: A. H. N. Rice, J. I. Mitchell

Publikováno v: Mineralogical Magazine. 55:379-396

There is an association between the development of cleavage domes, a texture reflecting the displacement of insoluble matrix grains by porphyroblasts growing under a bulk hydrostatic stress, and textural sector-zoning. This has been found in garnet,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3dadac3b36e8944cd268c4bc9360b2f3
https://doi.org/10.1180/minmag.1991.055.380.08

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Geochronological evidence from discordant plutons for a late Proterozoic orogen in the Caledonides of Finnmark, northern Norway

Autor: S. J. Aitcheson, R. A. Gayer, Robert A. Cliff, J. S. Daly, A. H. N. Rice

Publikováno v: Journal of the Geological Society. 148:29-40

Rb-Sr whole-rock, Sm-Nd mineral and U-Pb zircon dates are reported for minor 0granites and Seiland Igneous Province gabbros in the Kalak Nappe complex (Middle Allochthon), northern Norwegian Caledonides. The Litlefjord (Rb-Sr WR 813 ± 62 Ma, MSWD 2.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::12a6071515bbdace81e93185cfbf6e74
https://doi.org/10.1144/gsjgs.148.1.0029

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