lithology


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lithology

(lĭth-ŏl′ō-jē) [″ + logos, word, reason]
The science dealing with calculi.
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References in periodicals archive ?
It is inferred that the Hassanabad Naalah (Ravine) is mainly dominated by first order streams, the watershed show dendritic drainage pattern, which thus show homogeneous lithology. The majority of the streams orders are fall in first-order and then second order stream case.
It is used to attain information about the acoustic impedance, which is commonly used in porosity modeling and lithology delineation, according to Obilo and Adekunle's paper.
It indicates that the slope angle has the greatest impact on the uniaxial compressive strength of the coal-rock combined body, followed by the lithology and the coal-rock height ratio.
The sandstone lithology in the studied area included argillaceous silt-stone, dolomitic lithic sandstone and dolomitic siltstone.
(2002) introduced the term Extended Elastic Impedance (EEI) to identify both fluid and lithology using the elastic impedance.
Table 1: Coal seam roof and floor lithology and the characteristics of efflorescent-oxidised rock mass.
The watershed has a variable lithology: schist, quartzite, sandstone, limestone, and microgranite conglomerate.
The selected impact factors, respectively, were stratum and lithology named Sx, structure characteristics ([S.sub.2]), volcanic activities ([S.sub.3]), water chemical characteristics ([S.sub.4]), geothermal gradient ([degrees]C/100m; [S.sub.5]), earthquake activities ([S.sub.6]), and hot spring temperature ([degrees]C; [S.sub.7]).
So the cap rocks of the Jinjiang hot springs are composed of trachyte, basalt, andesite, and andesitic tuff; the geothermal reservoir is a fracture zone with the lithology of volcanic breccia, sand, and gravel.
The watershed is included of dendritic type drainage pattern which is an indication of homogeneity in subsurface lithology. Drainage pattern analysis is carried out from DEM using the proposed method [15].
According to the geophysical properties of the rocks, the logs are always classified as follows: electrical logs, porosity logs, lithology logs, and miscellaneous logs.