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diamicton

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Series: GSA Special Papers
Published: 07 April 2021
DOI: 10.1130/2020.2548(10)
EISBN: 9780813795485
... (locations on Fig. 9 ). Photographs highlight deformation structures and the contacts between lithofacies and the underlying sediment. See Figure 2 for lithofacies codes. (A) Contact between diamicton and sand lithofacies below moraine. (B) Lithofacies of moraine and underlying surface surrounding...
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Series: GSA Special Papers
Published: 07 April 2021
DOI: 10.1130/2020.2548(12)
EISBN: 9780813795485
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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
..., and Westmont Moraine on the north ( Fig. 3 ). Both moraines are part of the Valparaiso Morainic System ( Willman and Frye, 1970 ); the surficial geologic unit forming the moraines is silt and clay-rich, matrix-supported diamicton of the Wadsworth Formation. The Wadsworth Formation was deposited during...
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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
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.
...—diamicton. The oldest glacial erosion surface in the Friis Hills is an isolated segment of a shallow glacial valley ( Figs. 2 and 4 ). The valley segment is sediment filled and cut into granite bedrock at the eastern edge of the platform surface ( Fig. 5 ). The valley cross section...
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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
Published: 01 January 2012
Russ. Geol. Geophys. (2012) 53 (1): 92–107.
... of the topmost part of the geoelectrical section across the Irbistu–Kokozek interfluve using the VES data revealed a number of fine-grained lenticular structures of the ancient lakes in the Chuya depression, which are hidden beneath a cover of fluvioglacial and lacustrine bouldery pebbles and moraine diamictons...
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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
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
Published: 01 April 2010
Russ. Geol. Geophys. (2010) 51 (4): 339–348.
... Pleistocene paleolake, several outcrops were observed, with reliably established diamictons from maximum glaciation moraines. These outcrops are described below. Here and in what follows, their location is shown in Fig. 1 , and lithologic columns, in Fig. 2 . Fig. 2. Standard sections...
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Journal Article
Published: 17 March 2009
Canadian Journal of Earth Sciences (2009) 46 (2): 67–82.
... of a till plain of the Wartanian ( = Warthe) age belonging to the penultimate glaciation of the lowlands. The ice sheet of this age was the youngest that reached the area under discussion (cf. Mojski 2005 , fig. 44). The exposures at Anielinek exhibit a diamicton interpreted as till ( Baraniecka 1973...
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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...