Publications
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Supraglacial sulfur springs and associated biological activity in the Canadian high arctic - signs of life beneath the ice Supraglacial sulfur springs and associated biological activity in the Canadian high arctic - signs of life beneath the ice
Unique springs, discharging from the surface of an arctic glacier, release H2S and deposit native sulfur, gypsum, and calcite. The presence of sulfur in three oxidation states indicates a complex series of redox reactions. Physical and chemical conditions of the spring water and surrounding environment, as well as mineralogical and isotopic signatures, suggest biologically mediated...
Authors
Stephen E. Grasby, Carlton C. Allen, Teresa G. Longazo, John T. Lisle, Dale W. Griffin, Benoit Beauchamp
Sediment dispersal pathways and conceptual sediment budget for a sediment starved embayment: Long Bay, South Carolina Sediment dispersal pathways and conceptual sediment budget for a sediment starved embayment: Long Bay, South Carolina
No abstract available.
Authors
P. Gayes, W. Schwab, N. Driscoll, R. Morton, W. Baldwin, J. Denny, E. Wright, M. Harris, M. Katuna, T. Putnev, E. Johnston
African and Asian dust: from desert soils to coral reefs African and Asian dust: from desert soils to coral reefs
Many hypotheses have been proposed to explain the decline of coral reefs throughout the world, but none adequately accounts for the lack of recovery of reefs or the wide geographical distribution of coral diseases. The processes driving the decline remain elusive. Hundreds of millions of tons of dust transported annually from Africa and Asia to the Americas may be adversely affecting...
Authors
Virginia H. Garrison, Eugene A. Shinn, William T. Foreman, Dale W. Griffin, Charles W. Holmes, Christina A. Kellogg, Michael S. Majewski, Laurie L. Richardson, Kim B. Ritchie, Garriet W. Smith
Influence of climate on deep-water clastic sedimentation: application of a modern model, Peru-Chile Trough, to an ancient system, Ouachita Trough Influence of climate on deep-water clastic sedimentation: application of a modern model, Peru-Chile Trough, to an ancient system, Ouachita Trough
Traditionally, an abrupt and massive influx of siliciclastic sediments into an area of deposition has been attributed to tectonic uplift without consideration of the influence of climate or climatic change on rates of weathering, erosion, transportation, and deposition. With few exceptions, fluvial sediment transport is minimal in both extremely arid climates and in perhumid (everwet)...
Authors
N. Terence Edgar, C. Blaine Cecil
A modern analogue for tectonic, eustatic, and climatic processes in cratonic basins: Gulf of Carpentaria, northern Australia A modern analogue for tectonic, eustatic, and climatic processes in cratonic basins: Gulf of Carpentaria, northern Australia
The Gulf of Carpentaria is a tropical, silled epicontinental sea and may be a modern analogue for ancient cratonic basins. For the purpose of this study, the Gulf of Carpentaria is compared to Pennsylvanian cratonic basins of the United States. During the Pennsylvanian, the North American continent moved from the Southern Hemisphere, through the Equator, into the Northern Hemisphere...
Authors
N. Terence Edgar, C. Blaine Cecil, R.E. Mattick, Patrick de Deckker, Yusuf S. Djajadihardja
Unique and exceptionally long interglacial marine isotope stage 11: window into Earth warm future climate Unique and exceptionally long interglacial marine isotope stage 11: window into Earth warm future climate
No abstract available.
Authors
Andre Droxler, Richard B. Alley, William R. Howard, Richard Z. Poore, Lloyd H. Burckle
Mobility of authigenic rhenium, silver, and selenium during postdepositional oxidation in marine sediments Mobility of authigenic rhenium, silver, and selenium during postdepositional oxidation in marine sediments
Sedimentary records of redox-sensitive trace elements hold significant potential as indicators of paleoceanographic environmental conditions. Records of Re can reveal the intensity of past reducing conditions in sediments at the time of deposition, whereas records of Ag may record the magnitude of past diatom fluxes to the seafloor. Confidence in paleoenvironmental reconstruction from...
Authors
John Crusius, John Thomson
Tale of two pit lakes: initial results of a three-year study of the Main Zone and Waterline pit lakes near Houston, British Columbia, Canada Tale of two pit lakes: initial results of a three-year study of the Main Zone and Waterline pit lakes near Houston, British Columbia, Canada
Pit lakes are becoming increasingly common in North America as well as in the rest of the world. They are created as openpit mines fill passively with ground water and surface inflows on cessation of mining activity. In many instances, the water quality in these pit lakes does not meet regulatory requirements due to a number of influences. The most important are the oxidation of sulfide...
Authors
John Crusius, R. Pieters, A. Leung, P. Whittle, T. Pedersen, G. Lawrence, J.J. McNee
Quaternary sedimentation and subsidence history of Lake Baikal, Siberia, based on seismic stratigraphy and coring Quaternary sedimentation and subsidence history of Lake Baikal, Siberia, based on seismic stratigraphy and coring
The long, continuous, high-latitude, stratigraphic record of Lake Baikal was deposited in three broad sedimentary environments, defined by high-resolution seismic-reflection and coring methods: (1) turbidite depositional systems, by far the most widespread, characterizing most of the margins and floors of the main basins of the lake, (2) large deltas of major drainages, and (3)...
Authors
Steven M. Colman, E.B. Karabanov, C. H. Nelson
Complexity analysis of the change in shoreline position at Duck, NC Complexity analysis of the change in shoreline position at Duck, NC
No abstract available.
Authors
Christopher Barton, Jeffrey S. Dismukes, R.A. Morton
Links between erosional hotspots and alongshore sediment transport Links between erosional hotspots and alongshore sediment transport
No abstract available.
Authors
Andrew Ashton, Jeffrey H. List, A. Brad Murray, Amy S. Farris