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diamicton

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Journal Article
Journal: GSA Bulletin
Published: 02 May 2019
GSA Bulletin (2020) 132 (1-2): 31–47.
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Series: GSA Field Guide
Published: 10 December 2018
DOI: 10.1130/2018.0051(10)
EISBN: 9780813756516
... (tunnel) valley. Lack of friction from overriding ice, poor drainage, and cold conditions result in formation of ice in channel. (B) Albedo of sediment-rich diamicton against relatively clean ice causes enhanced melting on either side of linear ice block that forms in former channel. (C) Long, linear...
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Journal Article
Journal: Geosphere
Published: 06 July 2018
Geosphere (2018) 14 (4): 1935–1960.
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Journal Article
Published: 11 September 2017
Canadian Journal of Earth Sciences (2018) 55 (7): 846–862.
... and subaquatic flow tills. The subaquatic flow till (thinly bedded diamicton) was deposited in an apron (up to 1 km wide) along the ice margin. An upward gradient of pore-water pressure immediately beyond the ice margin, causing heaving and dilation of the sediments, initiated debris flows of glacially derived...
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Journal Article
Published: 06 January 2017
Canadian Journal of Earth Sciences (2017) 54 (4): 445–460.
... antérieures au Wisconsinien tardif. Les séquences sédimentaires quaternaires du centre-nord de l’Alberta ont une épaisseur de jusqu’à 300 m dans des vallées ensevelies et sont composées de diamictons interlités avec des sédiments glaciolacustres et d’épandage fluvioglaciaire. La plupart des unités...
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Series: GSA Field Guides, GSA Field Guides
Published: 01 January 2017
DOI: 10.1130/2017.0049(03)
EISBN: 9780813756493
... of multiple grounding zone wedges. We will discuss the criteria for identifying grounding zone wedges, including diamicton units with foreset bedding that downlap onto a regional glacial unconformity at the base, and are truncated at the top by localized unconformities indicative of ice advance across...
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Journal Article
Journal: GSA Bulletin
Published: 01 May 2016
GSA Bulletin (2016) 128 (5-6): 719–738.
... of striations crosscuts these. The crosscutting striations are coarser than the first and have an average orientation of 089° ( Table 1 ). The crosscutting striations are restricted to a 0.3–4-m-wide zone that parallels the drift margin. Friis I drift is composed of an upper and lower diamicton...
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Journal Article
Published: 26 February 2016
Proceedings of the Yorkshire Geological Society (2016) 61 (1): 25–35.
..., the Happisburgh Till and Corton Diamicton members of the Happisburgh Glacigenic Formation, deposited during separate ice advances, and intervening glacilacustrine and outwash deposits laid down during ice-marginal retreat. During 2012, a new diamicton unit was discovered within the intervening sorted sediments...
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Journal Article
Published: 01 February 2016
Canadian Journal of Earth Sciences (2016) 53 (3): 281–303.
.... Halton sediment has a gradational transition from underlying Oak Ridges Moraine (ORM) sediment and can abruptly overlie Newmarket Till. Halton strata thin and fine upwards from ORM sand and gravel to graded sand, silt, and clay rhythmites, with muddy diamicton and sand and gravel interbeds. These strata...
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Journal Article
Published: 20 November 2013
Canadian Journal of Earth Sciences (2014) 51 (2): 125–141.
..., in southern British Columbia, a construction project exposed glacial sediments beneath Lambly Creek Basalt, providing a minimum age for this glaciation. The basalt is composed of a number of flows yielding ages that range from 0.76 ± 0.11 to 1.5 ± 0.1 Ma. The sediments consist of a diamicton, interpreted...
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Journal Article
Published: 22 October 2012
Canadian Journal of Earth Sciences (2013) 50 (5): 545–563.
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Journal Article
Journal: GSA Bulletin
Published: 01 July 2010
GSA Bulletin (2010) 122 (7-8): 1298–1307.
... massive diamicton and organic-poor stratified diamicton. The massive diamicton is characterized by high total organic carbon (TOC) content and carbon to nitrogen (C/N) ratios and was deposited in a cold climate regime by iceberg-rafted sedimentation from coastal fast ice in which algal plants, as well...
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Journal Article
Journal: GSA Bulletin
Published: 01 July 2010
GSA Bulletin (2010) 122 (7-8): 1135–1159.
... and Pleistocene age on the Wilkes Land margin include glaciomarine diamictons containing basement rock clasts and fine-grained siliciclastic detritus, which provide proxy samples of the continental basement. Rock clasts obtained by dredge (81% metamorphic, 14% igneous, and 5% sedimentary lithologies) provide...
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Journal Article
Published: 17 March 2009
Canadian Journal of Earth Sciences (2009) 46 (2): 67–82.
... that reached the area under discussion (cf. Mojski 2005 , fig. 44). The exposures at Anielinek exhibit a diamicton interpreted as till ( Baraniecka 1973 , Ruszczyńska-Szenajch 1976 a , 1976 b ). The till is 5–7 m thick and overlies glaciolacustrine sediments, containing grey clayey layers interbedded...
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Series: GSA Special Papers
Published: 01 January 2009
DOI: 10.1130/2009.2458(03)
... that constitutes the base of the Exmore Formation and its lower diamicton member. Here, material derived from the upper sediment target layers, as well as some impact ejecta, occurs. The block-dominated member of the Exmore Formation, from ~855–618.23 m, consists of nonmarine sediment blocks and boulders (up...
Series: GSA Special Papers
Published: 01 January 2009
DOI: 10.1130/2009.2458(22)
... We investigated whole-rock chemical compositions of 318 samples of Exmore breccia (diamicton), impactite (suevite, impact melt rock, polymict lithic impact breccia), and crystalline basement-derived rocks from 444 to 1766 m depth in the International Continental Scientific Drilling Program...
Journal Article
Published: 26 November 2007
Canadian Journal of Earth Sciences (2007) 44 (11): 1603–1625.
... developed ice cap. The rare occurrences of striae and erratics, and morphometric and lithological characteristics of summit diamictons, imply limited basal erosion by both local and regional ice caps. This is postulated to result from early protection of rock surfaces by the initial buildup of thin, frozen...
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Journal Article
Published: 20 November 2007
Canadian Journal of Earth Sciences (2007) 44 (11): 1537–1549.
... continental shelf seaward of Hudson Strait are not well understood. High-resolution airgun seismic reflection profiles from the outer shelf and slope show an acoustically incoherent, prograded unit at least 30 m thick. This unit has been sampled by piston cores and corresponds to a carbonate-rich diamicton...
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Journal Article
Published: 01 June 2007
Journal of Sedimentary Research (2007) 77 (6): 469–479.
...John T. Andrews; Dennis D. Eberl Abstract Quantitative X-ray diffraction analyses on the < 2 mm sediment fraction from the Iceland shelves are reported for subglacial diamictons, seafloor surface sediments, and the last 2000 cal yr BP from two cores. The overall goal of the paper...
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Journal Article
Published: 12 March 2007
Canadian Journal of Earth Sciences (2007) 44 (1): 89–105.
... diamictons riches en sable, en boue et en clastes. Les caractéristiques texturales des carottes de sédiments et les changements verticaux de types de faciès ont servi à définir six unités stratigraphiques (SU I à SU VI) dans les dépôts de remplissage des vallées. Ces unités représenteraient les conditions...
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