In drilling three holes are drilled at suitable location in parent rock
. During drilling one hole is made vertical while other two holes are made horizontal.
For a crude oil deposit being profitable to drill for, the amount of organic matter of the parent rock
material needs to be sufficiently high this is true for example for so called mudstone, which often serves as parent rock
Therefore, the mineral compositions of the parent rock
in the study area became the main determinant factor of the extreme clay content in the altered volcanic materials .
Metallic mallets and thick chisels are used to split stone blocks from the parent rock
before cutting them into suitable sizes.
But its true parent rock
probably formed in the same part of the solar system as Vesta.
This study which will be conducted over 13 months, by a grouping of two Tunisian and Canadian consulting firms with a budget of 2 million dinars (part of the State budget), will help analysise the assumptions of extraction and exploitation of unconventional hydrocarbons (fracturing technique to search for hydrocarbons within the parent rock
and mainly shale gas) to determine the sites of the deposits and present the international experiences in this field.
where [F.sub.R] is resultant force on the rock fragment due to the front blade surface; [F.sub.N] is resultant force on the overcut area due to the rear blade surface; [[PHI].sub.b] is friction angle between the cutting blade and the dense core; [[PHI].sub.B] is friction angle between the cutting blade and the parent rock
; g is normal vector of the front blade surface; U is chip removal velocity vector; [g.sub.[beta]] is unit vector normal to the rear blade surface; and [[alpha].sub.[beta]] is unit vector normal to the rear surface of the inward cutting blade.
Gneiss types vary with the parent rock
from which they formed originally, and there are many grades of gneiss.
The melt inclusions are hypothesized to be the product of partial melting during high-grade metamorphism of the parent rock
, which produced a silica-rich melt and an alumina-rich residue from which the sapphires crystallized.
Chemical weathering of the rocks is one of important surficial process that causes geochemical redistribution of elements and is controlled by various factors such as topography, parent rock
type, climate conditions, plant and biological activities (Bardossy, 1982; Bogatyrev et al., 2009).
According to studies, humus horizons of black soil and solonetzes are enriched in microelements relative to the parent rock
material (Table 1).
Therefore, within flat terrain macroforms (automorphic conditions) the regular change of soil morphological structure is determined primarily by bioclimatic (bioenergy) potential of landscape zone, by the properties of the parent rock
and soil formation period.