- Mortimore, R. (2004). "Distribution, Peterology, and Mode of
Development of
Silcretes (S****ns and Puddingstones) on the
Eastern South Downs, UK".
Earth Surface...
- Mortimore, R.N. (2004). "Distribution,
petrology and mode of
development of
silcretes (s****ns and puddingstones) on the
eastern South Downs, UK".
Earth Surface...
- used
regularly and
systematically by
early modern humans to heat
treat silcrete stone to
increase its flake-ability for the
purpose of
toolmaking approximately...
-
during the
final shaping of
Still Bay
bifacial points made on heat‐treated
silcrete." Both
pressure flaking and heat
treatment of
materials were previously...
- hard,
brittle stones, rich in silica, such as quartzite, chert, flint,
silcrete and
quartz (the
latter particularly in the
Kimberleys of
Western Australia)...
- and food
resources depleted.
Their country contained the most
important silcrete,
chert and
quartzite mines in Tasmania. The
South East
people had a hostile...
- (forming
groundwater silcrete), or
close to the surface,
within the soil
profile (forming
pedogenic silcrete).
Groundwater silcretes typically formed in...
-
combination of
carbonized roots and rootlets, rhizoliths,
illuvial clay cutans,
silcrete-like
silica cements, and the
leaching and
alteration of the
sandy sediments...
-
sesquioxides of iron;
alcrete (bauxite) is
dominated by
sesquioxides of aluminum;
silcrete by silica;
calcrete (caliche) by
calcium carbonate, and
gypcrete (gypcrust)...
-
course led to
millennia of
salinity buildup and
formation of
calcretes and
silcretes. Buol,
Stanley W.; Southard,
Randal J.; Graham,
Robert C.; McDaniel, Paul...
