Zobrazeno 1 - 10
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pro vyhledávání: '"Darrel G.F. Long"'
Autor:
Darrel G.F. Long
Publikováno v:
Canadian Journal of Earth Sciences.
It is commonly assumed that the gradients of pre-vegetation fluvial systems were greater than those of modern rivers. If the measured thickness of crossbeds is first corrected for post-depositional compaction, using thin-section-based observations, t
Autor:
Darrel G.F. Long
Publikováno v:
Earth-Science Reviews. 188:148-175
The recognition of Archean fluvial deposits is complicated in many cases by post depositional deformation and metamorphism. Most surviving deposits can be categorized as deposits of alluvial fans with and without debris flows, and sand and gravel-bed
Autor:
Darrel G.F. Long
Publikováno v:
Earth-Science Reviews. 220:103740
This paper provides a review of existing methods for determining paleohydraulic parameters applicable to ancient lithified fluvial strata and attempts to update these formulae using empirical re-evaluation of modern stream data. Linear regression ana
Autor:
Christopher Mark Berry, Neil S. Davies, Sanjeev Gupta, Darrel G.F. Long, William J. McMahon, A. R. Bashworth, Michael C. Rygel, Martin R. Gibling, Charles H. Wellman, Ben J. Slater, Howard J. Falcon-Lang
Publikováno v:
Journal of the Geological Society. 174:947-950
The first-order importance of tectonic and environmental controlsfor terrigenous sediment supply has rarely been questioned, but the role of vegetation in the modification of ancient alluvial signa ...
Autor:
Darrel G.F. Long
Publikováno v:
Sedimentary Geology. 347:53-66
Fluvial strata at the base of the Whyte Inlet Formation on Baffin Island, to the west of Sikosak Bay, are predominantly boulder and cobble bearing large pebble conglomerates of braided fluvial origin. Local development of narrow sinuous channels, pos
Publikováno v:
Terra Nova. 28:188-194
Autor:
Maurice Colpron, Donald C. Murphy, George E. Gehrels, James L. Crowley, Luke P. Beranek, Darrel G.F. Long, Luke Bickerton
Publikováno v:
Lithosphere. 7:541-562
The Whitehorse trough is an Early to Middle Jurassic marine sedimentary basin that overlaps the Intermontane terranes in the northern Cordillera. Detrital zircon dates from eight Laberge Group sandstones from various parts of the trough all display a
Publikováno v:
Precambrian Research. Elsevier
A hydrothermal origin has been advocated for the genesis of rounded and subhedral-euhedral pyrite in some Neoarchaean-Palaeoproterozoic clastic sedimentary rocks, thereby limiting their value as proxies for the composition of the early atmosphere. We
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e82a79d96905947911b0d3d6c25cb92f
https://research.vu.nl/en/publications/e95cd11f-dd78-40d3-a360-89b94aaa4c33
https://research.vu.nl/en/publications/e95cd11f-dd78-40d3-a360-89b94aaa4c33
Autor:
Darrel G.F. Long
Clasts of chert dominate the terrestrial fill of many foreland and successor basins where the uplifted hinterland has been subject to intense chemical weathering, leading to the destruction of most labile rock fragments. Examination of chert varietie
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a3dd4b20b4afe46be1e0aa194869bab5
https://doi.org/10.1016/b978-0-12-803386-9.00012-5
https://doi.org/10.1016/b978-0-12-803386-9.00012-5
Autor:
Santanu Banerjee, Eric E. Hiatt, Kenneth A. Eriksson, Patricia L. Corcoran, Edward L. Simpson, Nils Lenhardt, Darrel G.F. Long, Andrew D. Miall, Patrick G. Eriksson, Marc Laflamme, Peir K. Pufahl, Subir Kumar Sarkar, Michael V. Mints, Octavian Catuneanu, George E. Williams
Publikováno v:
Gondwana Research. 24:468-489
The ephemeral nature of most sedimentation processes and the fragmentary character of the sedimentary record are of first-order importance. Despite a basic uniformity of external controls on sedimentation resulting in markedly similar lithologies, fa