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1
Regolith Geology and Geomorphology
The term 'duricrust' was coined by Woolnough (1930). The word essentially
means a mass of hard material formed within the regolith by natural cementation.
Specific names are given to various types of duricrust according to their
cementing ...
G. Taylor, R. A. Eggleton, 2001
2
Ancient Australian Landscapes
There are, however, exceptions. Well-jointed and therefore pervious volcanic
rocks have proved durable, and some regoliths and alluvia, for example, have
formed caprocks because they carry a duricrust such as calcrete or travertine (
e.g. ...
3
Arabian Deserts: Nature, Origin and Evolution
Most duricrust has formed where the groundwater table has been close to the
surface. This is clearly the case in the Abqaiq-Ain Dar area, where sheets of
gypsum crystals form duricrust, or are present as masses of gypsum crystals ('
sand ...
4
Geomorphology of Desert Environments
(b) Each of the principal types of duricrust displays considerable variability with
respect to morphology, micromorphology, chemistry, and mineralogy. This
variability reflects the diversity of environments of duricrust formation. (c) The
formation ...
Anthony J. Parsons, Athol D. Abrahams, 2009
5
Hot Deserts: Engineering, Geology and Geomorphology : ...
Duricrust formation by pedogenic development is often a staged process (Watson
& Nash 1997; Alonso-Zarza 2003). The stages of duricrust formation depend on
whether the host soil is fine or coarse grained. Within fine sand, silt or mud soils,
...
6
Engineering Geology: Principles and Practice
Duricrust If, in a semi-arid climate, the ground-water table lies not far below
surface, water drawn to the surface will evaporate and deposit any minerals held
in solution within the near surface materials, resulting in their cementation.
David George Price, Michael de Freitas, 2009
7
The Kalahari Environment
As already noted (section 3.2.4) conditions within the Kalahari favour the
accumulation of duricrust suites (Figure 3.6b, e and /). Such suites are not only
well developed, but also extremely complex. In regional terms the distribution of
duricrust ...
David S. G. Thomas, Paul A. Shaw, 1991
8
Beneath the Surface: A Natural History of Australian Caves
duricrust. layers. In soils and soft alluvial deposits the process of piping can form
small caves by physically removing soil material along shallow subsurface
conduits, but these are rarely enterable. Saline soils are particularly susceptible
to this ...
Elery Hamilton-Smith, Brian Finlayson, 2003
9
Soil and Rock Construction Materials
4.3 DURICRUST ROAD GRAVELS The most important group of natural gravels
for road-making purposes are the hardened soil materials: ferricrete, calcrete and
silcrete, collectively known as duricrusts, pedocretes or pedoderms.
10
Encyclopedia of Paleoclimatology and Ancient Environments
Other accumulations such as calcium sulfate- cemented gypcrete are sometimes
defined as duricrusts but are less likely to persist within the landscape. In contrast
, durable duricrust varieties such as ferricrete and silcrete can act as important ...
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Mars Sample Return Site Selection & Sample Acquisition Study (1980)
At the Viking 1 site, the rover would collect samples of cloddy soil, crunchy “duricrust” material, an active dune, and drift material, as well as ... «Wired, 一月 14»
A New Look at Unusual Mars Craters
These salts will form a sticky surface layer at the top of the LARLE deposit called duricrust, which has been observed at several landing sites ... «Astrobiology Magazine, 十月 13»
Browse Curiosity's data in the Analyst's notebook
MIN chose three targets with interesting properties (a large clast, a conglomerate, and a “duricrust”) to image with mastcam. Click on the targets ... «The Planetary Society, 三月 13»
Large Amounts of Water Ice Found Underground on Mars
This duricrust would have partially shielded the ice from contemporary surface temperatures and atmospheric conditions, slowing the ... «Universe Today, 一月 12»
Ok, Spirit Rover, Let's Blow This Pop Stand!
... since the rover was driving in reverse when it entered this area where it broke through a “duricrust” and fell through to the talcum powder-like ... «Universe Today, 十一月 09»
