Zobrazeno 1 - 10 of 196 pro vyhledávání: '"D Bridgwater"'
1
Characterizing the growth of structures in three dimensions using patterns of deep-water fan and channel systems
Autor: John H. Shaw, Jessica Don, Daniel D. Bridgwater, Gbenga Lufadeju, Andreas Plesch
Publikováno v: AAPG Bulletin. 103:177-203
Channel and fan systems in deep-water continental slopes respond to active deformation creating patterns within growth strata that record the history of deformation. These patterns provide important constraints on the timing and kinematics of structu
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8cc04e72d698e7dcd10a06b6e6740585
https://doi.org/10.1306/04301918255
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3
Geochronological constraints on Paleoproterozoic crustal evolution and regional correlations of the northern Outer Hebridean Lewisian complex, Scotland
Autor: Martin J. Whitehouse, D. Bridgwater
Publikováno v: Precambrian Research. 105:227-245
Ion-microprobe U–Th–Pb geochronological data are presented for four samples from Paleoproterozoic belts in the Lewisian of the northern Outer Hebrides, north-west Scotland. Two of these samples, a tonalite sheet associated with the South Harris i
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::49d312caf33a68d63dc872b35868f609
https://doi.org/10.1016/s0301-9268(00)00113-3
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4
Age, evolution and regional setting of the Palaeoproterozoic Umba igneous suite in the Kolvitsa–Umba zone, Kola Peninsula: constraints from new geological, geochemical and U–Pb zircon data
Autor: Natalia Berezhnaya, E. B. Sal’nikova, Mogens Marker, Irina Sedova, D. Bridgwater, Nikolay Alexejev, Viktor Glebovitsky
Publikováno v: Precambrian Research. 105:247-267
The Umba igneous complex consists of an enderbite–charnockite suite, including porphyritic variety of charnockites, and a porphyritic granite. Both are intruded by irregular veins or minor bodies of later reddish granite. The porphyritic charnockit
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4f17669627e4985dfd3d98269b6e4b00
https://doi.org/10.1016/s0301-9268(00)00114-5
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5
Complex controls on the trace-element chemistry of non-marine ostracods: an example from Lake Pátzcuaro, central Mexico
Autor: Sarah O'Hara, Jonathan A. Holmes, Nigel D Bridgwater
Publikováno v: Palaeogeography, Palaeoclimatology, Palaeoecology. 148:117-131
The calcitic shells of non-marine ostracods are sources of geochemical information that have the potential to record changes in the water chemistry of closed-basin lakes resulting from variations in the hydrological budget within the catchment. In pa
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5339bd160ef8ca019d291c4ea8d132e2
https://doi.org/10.1016/s0031-0182(98)00179-5
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6
Controversial Pb-Pb and Sm-Nd isotope results in the early Archean Isua (West Greenland) oxide iron formation: preservation of primary signatures versus secondary disturbances
Autor: D. Bridgwater, Ole Stecher, Minik T. Rosing, Robert Frei
Publikováno v: Geochimica et Cosmochimica Acta. 63:473-488
Pb stepwise leaching (PbSL) determinations on two magnetite-enriched fractions of a BIF sample from the northeastern part of the Isua supracrustal belt (West Greenland) yield an isochron of 3691 ± 22 Ma (MSWD = 0.4). In combination with previously p
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d81d0f9053e90c0bc02217c3c73ef120
https://doi.org/10.1016/s0016-7037(98)00290-7
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7
Changes in the 18O/16O ratios of fluids as evidence for different metamorphic episodes in high grade gneisses from the Konovalov Mountains area (Rayner Complex, East Antarctica)
Autor: D.P Krylov, Stephan Hoernes, D. Bridgwater
Publikováno v: Chemical Geology. 147:295-312
Rocks of the Rayner complex in East Antarctica have suffered a complex multiphase metamorphic evolution. Radiogenic age constraints taken from the literature suggest at least two metamorphic events, the `main Rayner event' accompanied by charnockite
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4989cc25c0bef55ae47b60fd79446846
https://doi.org/10.1016/s0009-2541(98)00022-9
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8
Detrital zircon ages from the Loch Maree Group, Lewisian Complex, NW Scotland: confirmation of a Palaeoproterozoic Laurentia?Fennoscandia connection
Autor: D. Bridgwater, R. G. Park, Martin J. Whitehouse
Publikováno v: Terra Nova. 9:260-263
Ion-microprobe U-Pb zircon ages of detrital zircons from a metasediment of the Loch Maree Group, Lewisian Complex, NW Scotland show striking similarities to those in coeval Palaeoproterozoic belts of Laurentia and Fennoscandia, and confirm previous s
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::61a15b0e8786f16484afb2121084cf2d
https://doi.org/10.1111/j.1365-3121.1997.tb00025.x
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9
Resetting of SmNd systematics during metamorphism of > 3.7-Ga rocks: implications for isotopic models of early Earth differentiation
Autor: Minik T. Rosing, D. Bridgwater, Gérard Gruau, R.C.O. Gill
Publikováno v: Chemical Geology. 133:225-240
New SmNd isotopic results for sixteen samples from the Garbenschiefer Amphibolite Unit of the > 3700-Ma Isua supracrustal belt of West Greenland are reported. The data illustrate the difficulty in identifying primary ϵNd(T) values in poly-metamor
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::058ed55856efe29a50e7e326b8af752a
https://doi.org/10.1016/s0009-2541(96)00092-7
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