Structure, generation and preservation of upward fining, braided stream cycles in the Old Red Sandstone of ScotlandCambridge 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 ...... hiện toàn bộ
Collision zone between the Kohistan arc and the Asian plate in NW PakistanCambridge 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 Permi...... hiện toàn bộ
An alternative astronomical calibration of the lower Pleistocene timescale based on ODP Site 677Cambridge 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...... hiện toàn bộ
Exploring the plutonic-volcanic link: a zircon U-Pb, Lu-Hf and O isotope study of paired volcanic and granitic units from southeastern AustraliaCambridge 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 B...... hiện toàn bộ
Distribution of anatomically-preserved floras in the Lower Carboniferous in Western EuropeCambridge 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 ...... hiện toàn bộ
Experimental taphonomy: silicification of plants in Yellowstone hot-spring environmentsCambridge 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 n...... hiện toàn bộ