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Methanogenesis in subglacial sediments
Environmental Microbiology Reports, 2010Summary Methanogenic archaea have a unique role in Earth's global carbon cycle as producers of the greenhouse gas methane (CH 4 ). However, despite the fact that ice covers 11% of Earth's continental landmass, evidence for methanogenic activity in subglacial environments has
Eric S, Boyd +4 more
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Microstructures of sediment flow deposits and subglacial sediments: a comparison
Boreas, 2001Microstructural analysis of glacial deposits has recently been used as a research tool to determine sediment genesis. However, the occurrence of microstructures in deposits of known origin has not been sufficiently documented, hindering our ability to confidently interpret microstructures in sediments of unknown origin.
Matthew S. Lachniet +4 more
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Organic Remains in Finnish Subglacial Sediments
Quaternary Research, 1995AbstractMany sites in Fennoscandia contain pre-Late Weichselian beds of organic matter, located mostly in the flanks of eskers. It is a matter of debate whether these fragmentary beds were deposited in situ, or whether they were deposited elsewhere and then picked up and moved by glacial ice.
Mikko Punkari, Lars Forsström
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Sedimentation in a Permian Subglacial Channel
SEPM Journal of Sedimentary Research, 1981ABSTRACT An unusual sediment accumulation in the glaciogene Permian near Bacchus Marsh, Victoria is interpreted as representing the development and infilling of a subglacial channel. This polymictic conglomerate has a thickness of more than 50 m and rests within glacial and periglacial Permian strata.
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Subglacial Sedimentation, with Examples from Northern Sweden
Geografiska Annaler, 1963(1963). Subglacial Sedimentation, with Examples from Northern Sweden. Geografiska Annaler: Vol. 45, No. 1, pp. 41-51.
Gunnar Hoppe, Stig-Rune Ekman
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Subglacial Sediment Dispersal and till Composition
The Journal of Geology, 1987Dispersal of subglacial sediment down-ice from its bedrock source assumes the form of a negative exponential decay curve. Dispersal decay curves can be quantified by their decay constants, half-distances ( = half-lives), and total transport distances.
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The impact of snow line altitude on subglacial sediment export
2023Large Alpine glaciers typically export significant quantities of subglacially eroded sediment to their downstream environments via meltwater streams. The supply of this glaciogenically-produced sediment has an extensive impact on landform genesis and evolution; downstream ecology and ecosystem succession; river morphology and flood risk management ...
Matt Jenkin +4 more
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Sedimentation in a subglacial lake, Enniskerry, eastern Ireland
Sedimentary Geology, 1994Abstract Field relationships between a subglacial lake fill from the Enniskerry basin, eastern Ireland, provide evidence for dynamic links between the sedimentary fill, regional subglacial meltwater flow and regional ice dynamics. The basin fill (6–7 km2) forms an integral part of an extensive (30 km) subglacial meltwater system which developed ...
A.Marshall McCabe, Colm ÓCofaigh
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Behaviour of subglacial sediment and basal ice in a cold glacier
Geological Society, London, Special Publications, 2000Abstract Tunnels in glaciers offer unique opportunities for examining basal processes. At Suess Glacier in the Taylor Valley, Antarctica, a 25 m tunnel excavated into the bed of the glacier provides access to a 3.2m thick basal zone and the ice-substrate contact.
Fitzsimons, Sean +2 more
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