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colluvium

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Journal Article
Published: 08 November 2019
Environmental and Engineering Geoscience (2019) 25 (4): 272–288.
..., 1996 ). Colluvium is usually a heterogeneous mixture of highly saturated and disintegrated claystone and crushed stiff sandstone ( Figure 2 ). Figure 2. Example cross section for landslide no. 5 in Szymbark, area no I. Rainfalls, floods, snow melting, pore pressure fluctuations...
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Journal Article
Published: 25 October 2019
Geological Magazine (2020) 157 (4): 573–602.
... and adjacent slope-sediment (colluvium) composition. Palaeosols, particularly red-brown terra rossa, developed on abandoned fluvial terraces and adjacent hillslopes, especially overlying F3 surfaces. The combined evidence allows close correlation of the Vasilikos river and quarry deposits. Relatively coarse...
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Journal Article
Journal: Geology
Published: 19 June 2019
Geology (2019) 47 (9): 811–814.
... of modern channel alluvium/colluvium from catchments ranging from 0.01 to 1200 km 2 , using standard methods for 10 Be isolation and erosion rate calculation ( Gosse and Phillips, 2001 ), as detailed in the GSA Data Repository 1 . We addressed the following questions: What do cosmogenic-nuclide estimates...
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Journal Article
Published: 12 September 2018
Geological Magazine (2019) 156 (7): 1190–1200.
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Journal Article
Journal: GSA Bulletin
Published: 14 May 2018
GSA Bulletin (2018) 130 (11-12): 1903–1917.
... Be and 26 Al measurements of surface material and buried clasts to estimate the residence time and depositional history of colluvium within Garner Run, a 1 km 2 headwater valley in the central Appalachian Mountains containing relict Pleistocene periglacial features, including solifluction lobes, boulder...
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Series: GSA Field Guides
Published: 29 March 2018
DOI: 10.1130/2018.0050(06)
EISBN: 9780813756509
... seismic zone. These sites reveal bedrock faulted against Quaternary river sediments, including (1) a thrust fault on the Little River near Alcoa, Tennessee; (2) a series of thrust faults exposed in a drainage ditch that thrust Conasauga Shale against Quaternary colluvium in the footwall; and (3) a normal...
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Journal Article
Published: 01 June 2017
Italian Journal of Geosciences (2017) 136 (2): 198–205.
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Journal Article
Journal: Geosphere
Published: 01 February 2017
Geosphere (2017) 13 (1): 36–48.
..., and between talus deposits ( Fig. 6 ). Concentrations (from Tranel et al., 2015 ) reflect postglacial exposure, with little erosion since glacial retreat. Talus deposits are Quaternary colluvium (mapped by Love et al., 1992 ; Tranel et al., 2015 ). Talus concentrations are potentially a composite of high...
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Journal Article
Published: 01 August 2016
Environmental and Engineering Geoscience (2016) 22 (3): 245–258.
... and Dakota Formation. The lower part of the Straight Cliffs Formation and all of Tropic Shale and Dakota Formation are covered with a thick deposit of colluvial soil that has accumulated at the base of the steep cliff formed by the Straight Cliffs Formation. The landslide initiated in the colluvium...
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Journal Article
Published: 01 May 2016
Environmental and Engineering Geoscience (2016) 22 (2): 93–111.
... revealed the presence of four sinkhole-like depressions in the lake sediment that has accumulated over colluvium, with piping holes at their bottoms and sides, near the northeastern and northwestern margins of the lake ( Figure 3 ). Aside from water loss through evapotranspiration and surface runoff...
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Journal Article
Published: 01 August 2015
Environmental and Engineering Geoscience (2015) 21 (3): 181–195.
... these beds in hillside excavations for houses. These rocks develop sandy to clayey colluvial soils on the slopes and residual soils on the ridgetops. The landslide material consists of colluvium with added disturbed material from foundation excavation. Colluvium ranges in thickness from 1 to 3 m. During...
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Journal Article
Published: 01 December 2014
Journal of Environmental and Engineering Geophysics (2014) 19 (4): 207–228.
... are consistent with evidence of ground waves traveling up to 40 m one way. The phase polarity of waveforms within till and colluvial events show they may originate from either high or low dielectric contrasts, likely related to water or large boulders, respectively. Colluvium is defined as loose sediment...
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Journal Article
Published: 01 November 2013
Vadose Zone Journal (2013) 12 (4): vzj2013.02.0044.
... by varying topography and morphology of diagnostic horizons such as M- (colluvium), Bt- (clay illuviation), and C- (parent glacial till). By EMI mapping we identified (i) the boundary between erosive and colluvial areas around the kettle hole, and modeled (ii) the subsurface morphology of loamy horizons...
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Journal Article
Published: 01 May 2013
Environmental and Engineering Geoscience (2013) 19 (2): 99–114.
...NATHANIEL R. SWANSON; PAUL M. SANTI Abstract Colluvium and debris-flow deposits differ from each other and from glacial till and glacial outwash deposits in Durango, CO, in terms of sedimentological properties evaluated using laboratory testing. Testing included grain-size analysis, Atterberg...
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Journal Article
Published: 01 November 2012
Environmental and Engineering Geoscience (2012) 18 (4): 357–369.
...Changqing Qi; Jimin Wu; Shaorui Sun Abstract Mahe colluvium, located in the middle reach of the Yalong River valley, is about 3.5 km upstream of the proposed Lenggu dam site. About 125 vertical meters of the deposit will be immersed in the damming water during the operation of the Lenggu Hydropower...
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Journal Article
Journal: Geology
Published: 01 October 2012
Geology (2012) 40 (10): 935–938.
... from low- and high-order catchments control the magnitude of CWDR perturbations. We also determined in situ 14 C in a few samples. In conjunction with 10 Be, these data suggest partial storage for colluvium of a few thousand years within the catchment prior to debris-flow initiation. Terrestrial...
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Journal Article
Journal: Geology
Published: 01 September 2012
Geology (2012) 40 (9): 791–794.
... fault movement. The north-northwest–striking fault zone is characterized by a distinct 5–50-cm-thick clay fault-gouge layer juxtaposing hanging-wall bedrock (mylonites and cataclasites) over unconsolidated late Holocene footwall colluvium. The bedrock is cut by a strath terrace and overlain by mid...
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Journal Article
Journal: GSA Bulletin
Published: 01 September 2011
GSA Bulletin (2011) 123 (9-10): 1926–1938.
... sediments is likely more important in fine-grained regolith/colluvium than coarse-grained regolith/colluvium). At present, there is no consensus within the geomorphic community on which of these three mechanisms is most important in controlling the vegetation-erosion relationship for any one specific...
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Series: GSA Field Guide
Published: 01 January 2011
DOI: 10.1130/2011.0020(04)
EISBN: 9780813756202
...–1140 mm (35–45 in) per year, with the greatest amounts occurring in late winter and early spring, the Appalachian Plateau has long been recognized as an area of major landslide severity. Past landslides, both ancient and recent, have left unstable or marginally stable rock and soil masses (colluvium...
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Journal Article
Published: 01 February 2010
Quarterly Journal of Engineering Geology and Hydrogeology (2010) 43 (1): 33–68.
... discontinuities. There are extensive bodies of colluvium over the lower hillslopes of Hong Kong, which comprise accumulations of debris from old landslides and mass movements up to about 30 m thick, commonly in the form of boulders, cobbles and gravel in a matrix of sand, silt and clay. Erosion pipes can exist...
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