The results of the previous studies of
pelitic siltstone of the Ishim Formation made it possible to establish that these siliceous deposits are characterized by high dispersion and can be described as a natural silica (quartz) flour or "marshallite" (a term, which is predominantly used in the countries of the former USSR for
pelitic size-grained quartz) (Smirnov et al., 2016; Novoselov, 2016).
A regional gradient in the composition of metamorphic fluids in
pelitic schist, Pecos Baldy, New Mexico.
Kerogenous shale sequences are composed of a variety of solid, multilayer
pelitic rocks (clay, marl, clayey limestone, argillite, siltstone and the shale proper) containing all possible forms of organic matter (OM) at different maturity stages [1-4].
The quantitative distribution of clay minerals in the
pelitic fraction was determined by the simulation of 1-dimensional XRD patterns of disordered layered minerals using PyXRD software (BSD-2 Clause 2016).
5b) emplaced concordantly to the bedding planes of the host
pelitic rocks, indicating that they are sills.
Staurolite and garnet are present in
pelitic rocks of both the low-pressure metamorphic assemblage in the St.
What in site 3 generally consists of backfill, muddy silty clay, clay, gravelly sand, and
pelitic siltstone.
Gharrabi M, Velde B, Sagon JP (1998) The transformation of illite to muscovite in
pelitic rocks: constraints from X-ray diffraction.
In these areas where pure planar slides predominate, calcareous strata from 0.20 to 1.50 m thick moved over
pelitic banks forming blocks up to 2 m3 that accumulated at the slope foot.