Cambridge University Press (CUP)

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Structure, generation and preservation of upward fining, braided stream cycles in the Old Red Sandstone of Scotland
Cambridge University Press (CUP) - Tập 71 Số 1 - Trang 29-46 - 1980
B. J. Bluck
ABSTRACTA sequence of upward fining cycles contain braid bar structures in the coarse member. Bars, medially placed in the stream are recognised either by radiating large foresets or by identifying bar tail sediments with converging dips to their foresets. Lateral bars are recognised by the growth of major sandstone sheets oblique to the direction of channel trend and over slough mudstone. The fin... hiện toàn bộ
A new large lamniform shark from the uppermost Gearle Siltstone (Cenomanian, Late Cretaceous) of Western Australia
Cambridge University Press (CUP) - Tập 90 Số 1 - Trang 49-66 - 1999
Mikael Siverson
AbstractAn association of 100 teeth and 15 vertebrae from a large, lamniform shark, is described from the uppermost part of the Gearle Siltstone in the Giralia Anticline, Southern Carnarvon Basin, Western Australia. The material represents a new genus and species: Cardabiodon ricki. The taxon is referred to the new family Cardabiodontidae on the basis of its dental formula and uniquely oversized l... hiện toàn bộ
Collision zone between the Kohistan arc and the Asian plate in NW Pakistan
Cambridge University Press (CUP) - Tập 76 Số 4 - Trang 463-479 - 1985
Carol J. Pudsey, M. P. Coward, I. W. Luff, R. SHACKLETON, Brian F. Windley, M. Q. Jan
ABSTRACTThis paper describes the suture zone between the Asian plate and the accreted Kohistan island arc in the Chitral district of NW Pakistan.The southern part of the Asian plate consists of two tectonic units separated by the N-dipping Reshun fault. The northwestern unit comprises Devonian carbonates and quartzites overlain by Devonian to Permian shales and slates with some limestones (Lun sha... hiện toàn bộ
The Devonian tetrapodAcanthostega gunnariJarvik: postcranial anatomy, basal tetrapod interrelationships and patterns of skeletal evolution
Cambridge University Press (CUP) - Tập 87 Số 3 - Trang 363-421 - 1996
Michael I. Coates
ABSTRACTThe postcranial skeleton ofAcanthostega gunnarifrom the Famennian of East Greenland displays a unique, transitional, mixture of features conventionally associated with fishand tetrapod-like morphologies. The rhachitomous vertebral column has a primitive, barely differentiated atlas-axis complex, encloses an unconstricted notochordal canal, and the weakly ossified neural arches have poorly ... hiện toàn bộ
An alternative astronomical calibration of the lower Pleistocene timescale based on ODP Site 677
Cambridge University Press (CUP) - Tập 81 Số 4 - Trang 251-261 - 1990
Nicholas J Shackleton, Alfons Berger, W. R. Peltier
ABSTRACTOcean Drilling Program (ODP) Site 677 provided excellent material for high resolution stable isotope analysis of both benthonic and planktonic foraminifera through the entire Pleistocene and upper Pliocene. The oxygen isotope record is readily correlated with the SPECMAP stack (Imbrie et al. 1984) and with the record from DSDP 607 (Ruddiman et al. 1986) but a significantly better match wit... hiện toàn bộ
Growth of wedge-shaped plutons at the base of active half-grabens
Cambridge University Press (CUP) - Tập 95 Số 01 - Trang 309 - 2004
Exploring the plutonic-volcanic link: a zircon U-Pb, Lu-Hf and O isotope study of paired volcanic and granitic units from southeastern Australia
Cambridge University Press (CUP) - Tập 97 Số 4 - Trang 337-355 - 2008
Anthony I.S. Kemp, Chris Hawkesworth, B. A. Paterson, Gavin L. Foster, Peter D. Kinny, Martin J. Whitehouse, Roland Maas, Michael Wiedenbeck
AbstractThe relationship between plutonic and volcanic rocks is central to understanding the geochemical evolution of silicic magma systems, but it is clouded by ambiguities associated with unravelling the plutonie record. Here we report an integrated U-Pb, O and Lu-Hf isotope study of zircons from three putative granitic-volcanic rock pairs from the Lachlan Fold Belt, southeastern Australia, to e... hiện toàn bộ
Distribution of anatomically-preserved floras in the Lower Carboniferous in Western Europe
Cambridge University Press (CUP) - Tập 75 Số 3 - Trang 311-340 - 1984
Andrew C. Scott, Jean Galtier, Geoff Clayton
ABSTRACTTwelve localities of Lower Carboniferous strata in Scotland (Loch Humphrey Burn, Glenarbuck, Pettycur, Oxroad Bay and the Berwickshire localities of Cove, Burnmouth, Gavinton, Edrom, Foulden) and in France (Esnost, Roannais, Montagne Noire) have been investigated with particular regard to their anatomically preserved floras. New data on the composition and preservation of the assemblages, ... hiện toàn bộ
Cretaceous foraminiferal morphogroup distribution patterns, palaeocommunities and trophic structures: a case study from the Sergipe Basin, Brazil
Cambridge University Press (CUP) - Tập 81 Số 3 - Trang 221-246 - 1990
Eduardo A. M. Koutsoukos, Malcolm B. Hart
Foraminiferal studies have been used in palaeo-environmental reconstructions of the marine Cretaceous succession (upper Aptian to Maastrichtian) of the Sergipe Basin, in northeastern Brazil. The foraminiferal assemblages show broadly three types of response to changes in environment: (1) variations in morphotypes of the taxa present; (2) changes in specific and generic diversity; and (3) changes i... hiện toàn bộ
Experimental taphonomy: silicification of plants in Yellowstone hot-spring environments
Cambridge University Press (CUP) - Tập 94 Số 4 - Trang 503-521 - 2003
Alan Channing, Dianne Edwards
ABSTRACTDuring experiments conducted within the vent pool of Medusa Geyser, Norris Geyser Basin, Yellowstone National Park, USA, amorphous opaline silica (opal-A) was deposited on/within plant tissues within 30 days of immersion. Initially, deposition created inter/intra-cellular films which lined cell walls plus intercellular colloid suspensions (sols) of opal-A nano/microspheres. By 330 days, op... hiện toàn bộ
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