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slush-flow model

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Published: 01 January 2019
DOI: 10.1144/SP467.2
EISBN: 9781786203625
... and incorporated sediment, together with flow dynamics that mimic those on Mars, suggest that, at least for some gully forms, a terrestrial slush-flow model of formation might be applicable. We suggest that gully formation by slush flows is more likely to have occurred under environments with greater...
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Journal Article
Journal: Geosphere
Published: 04 June 2018
Geosphere (2018) 14 (4): 1710-1752.
... trapped within catchments weekly that were later remobilized onto fans. Deposits were mapped on images taken three to four times per day. Most events were ice avalanches (58%–100%). Slush avalanches and/or flows were common in spring and fall (0%–65%). Icy debris flows were <5% of the events, observed...
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Journal Article
Published: 01 May 2000
Journal of Sedimentary Research (2000) 70 (3): 461-469.
... feeder channels) that indicate mud flows and debris flows. However, our twin fans were not unique in lacking these features, and were otherwise comparable to the other fans. Options for the wood-depositing process on the twin fans would seem to be a flash flood or a snow or slush avalanche. Debris...
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Journal Article
Journal: Geophysics
Published: 29 August 2017
Geophysics (2017) 82 (3): EN33-EN50.
...Shan Dou; Seiji Nakagawa; Douglas Dreger; Jonathan Ajo-Franklin ABSTRACT To better understand the relationship between P-wave velocities and ice content in saturated, unconsolidated saline permafrost, we constructed an effective-medium model based upon ultrasonic P-wave data that were obtained from...
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Journal Article
Journal: Geosphere
Published: 01 April 2008
Geosphere (2008) 4 (2): 401-410.
... temperatures of <–70 °C. If the initial model forcing is more moderate (slush-ball Earth), polar temperatures are <–50 °C, but temperatures in low latitudes stay well above the freezing point of water, and therefore ice-free ocean areas remain. Based on our simulations, we are able to observe that global...
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Journal Article
Published: 01 March 2017
American Mineralogist (2017) 102 (3): 643-654.
.... For geochemical modeling of the AMD systems, reliable thermodynamic data for these phases are needed. In this work, we have determined thermodynamic data for the most acidic sulfates rhomboclase [(H 5 O 2 )Fe(SO 4 ) 2 ·2H 2 O or (H 3 O)Fe(SO 4 ) 2 ·3H 2 O] and the phase (H 3 O)Fe(SO 4 ) 2 . The actual...
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Journal Article
Journal: GSA Bulletin
Published: 01 April 2001
GSA Bulletin (2001) 113 (4): 508-520.
... by briefly describing the pluton and its regional setting. We then describe structures related to melt extraction from mush pores, followed by magma flow structures (mush is an effectively solid magma where crystals form an interconnected skeleton). We propose a model for the origin of the ubiquitous...
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Journal Article
Published: 01 February 2007
Clays and Clay Minerals (2007) 55 (1): 18-35.
... are consistent with a model of halloysite dehydration, where the shapes transform from an open-hole tubular morphology to a closed-hole unfurled morphology. Mineral paragenesis includes the effects of initial deposition of volcanic tuffs and andesite on top of karstic terrain. The contact between altered...
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Journal Article
Journal: Economic Geology
Published: 01 July 2001
Economic Geology (2001) 96 (4): 705-721.
...-forming fluids were generated from metamorphic dehydration reactions at deeper crustal levels and were variably influenced by exchange with wall rocks during transport to the site of deposition. This genetic model for the Central and North Deborah gold deposits is consistent with other turbidite-hosted...
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Journal Article
Journal: Geophysics
Published: 06 September 2012
Geophysics (2012) 77 (5): WC245-WC258.
... of the survey area, covered by the dense patch (Figure  6 ). Outside the dense patch, the fold is significantly lower and there is also some irregularity in the fold pattern due to Slush Lake. Table  2 summarizes the processing flow applied to the data. Some of the more important processing steps are described...
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Journal Article
Journal: AAPG Bulletin
Published: 01 September 2014
AAPG Bulletin (2014) 98 (9): 1789-1809.
... and dimension. Correctly estimating the size, distribution, and permeability of geobodies in reservoir models is essential to constrain flow behaviors. At the reservoir scale, heterogeneity is influenced by the variability in geobodies and their respective petrophysical properties, but the geobodies...
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Journal Article
Published: 01 May 2001
Journal of Sedimentary Research (2001) 71 (3): 346-354.
... on the formation of anchor ice on the Dunnville water intake on the north shore of Lake Erie, a crib-type intake located in 7.6 m of water. The water flow through this intake was severely reduced following a night of offshore winds of 24 km hr -1 , no ice cover over the intake, and air temperatures below -6°C...
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Journal Article
Published: 20 July 2007
Canadian Journal of Earth Sciences (2007) 44 (6): 791-806.
... to be disentangled from those of slush flows from supraglacial lakes ( Braun et al. 2000 ). It should therefore be possible to unambiguously identify jökulhlaup deposits in the long core record, and produce a millennial-scale undisturbed reconstruction of jökulhlaup frequency, which would test long-term models...
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Journal Article
Journal: The Leading Edge
Published: 01 August 2009
The Leading Edge (2009) 28 (8): 936-942.
.... Recent lease sales in the Chukchi Sea will let us apply this expertise on hazard surveys, sparker surveys, bathymetry modeling, sidescan sonar, and sub-bottom profiling ( Figure 3 ). Figure 3. Shallow-water, transition-zone survey along Beaufort shoreline. In this 2009 season...
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Journal Article
Published: 01 October 2017
Geochemical Perspectives (2017) 6 (2): 229-260.
... sections of the glacier, however, it was just plain dangerous because the slush routinely failed and travelled rapidly downglacier as slush flows or slush avalanches that would have been quite capable of wiping out a camp or sweeping away a person. Hence, there was a 2-to-3 week period every year when we...
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Series: Geological Society, London, Special Publications
Published: 01 January 2005
DOI: 10.1144/GSL.SP.2005.242.01.06
EISBN: 9781862394902
... ) and, elsewhere, Paterson (1994) has shown that empty cavities in ice have the potential to be preserved over long periods of time due to the small creep rates associated with cold subsurface temperatures and low overburden pressures. Lunardini (1988) , using radial heat flow models, has demonstrated...
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Series: GSA Special Papers
Published: 11 September 2019
DOI: 10.1130/2019.2542(23)
EISBN: 9780813795423
... flowing through the Frasassi Gorge outside the cave. In the Frasassi multistory cave system, the elevation of 235 ± 5 m asl corresponds to the third karst level or “floor,” the minimum age of which from speleothem U-Th dating is ca. 130 ± 15 ka. The luminescence ages for the two samples from the SDS site...
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Published: 01 January 2019
DOI: 10.1144/SP467.15
EISBN: 9781786203625
... agent producing Martian gullies, particularly in the light of new modelling work that leverages such results ( Conway et al. 2018 b ). The Earth analogues presented at the workshop and included in this Special Publication include Antarctic water flows in Victoria Land ( Hauber et al. 2018...
FIGURES
Journal Article
Journal: Elements
Published: 01 January 2005
Elements (2005) 1 (1): 39-43.
..., however, we need first to travel backward in time. © 2005 by the Mineralogical Society of America 2005 In the standard Condensation Model, the solar system formed just over 4.6 billion years ago from a large gas nebula within which was suspended a significant quantity of dust grains ( Cameron...
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Journal Article
Journal: Geophysics
Published: 14 January 2015
Geophysics (2015) 80 (2): D99-D110.
... hydraulically disconnected from the stiff pore space. Thus, in this limit, rock stiffening due to unrelaxed squirt flow (squirt-dispersion) can be modeled as an elastic problem of fluid substitution in a rock with disconnected soft pores, for which a rigorous upper bound is given by Gibiansky and Torquato...
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