(Syllabus) RAS Pre-Syllabus: Geology (Code No. 16)

Rajasthan Public Service Commission

RAS Pre-Syllabus: Geology (Code No. 16)

I. Physical Geology and Geomorphology :

Solar system, the earth, its origin, age and internal constitution. Weathering and erosion. Geological work of river, glacier, wind, ocean and ground water. Types, products and distribution of volcanoes. Causes, effects and distribution of earthquakes.

Morphology of continents and oceans. Elementary idea of isostasy, continental drift, sea floor spreading and plate tectonics. Iceages, past climates and coral reefs. Land forms, their types and relation to lithology and deformation Geomorphological sub division of India.

II. Structural Geology and Geotectonics and Structure and Tectonics of India:

Dip, strike, pitch and plunge; Clinometer Compass. Determination of top of beds. Description and classification of folds, faults, unconformities and joints. Cleavage, schistosity, foliation and lineation. Igneous intrusives and extrusive bodies. Overlap, offlap, outliers and inliers. Major tectonic sub divisions of India and their characteristics. Origin of Himalayas, Indoganetic plains and deserts in India.

III. Palaeontology, Principles of Stratigraphy and Geology of India :

Mode of preservation and utility of fossils. Elementary idea of organic evolution. Morphology and geological distribution of Graptoloidea, Echinoidea, Gastropoda, Lamellibranchia, Trilobita, Brachiopoda, Cephalopoda and Foraminifera.

A brief study of Gondwana plant fossils and Siwalik fauna; elementary; idea of evolution of man, elephant and horse, Standard stratigraphic time scale, principles of stratigraphic correlation and knowledge of stratigraphic classification.

Study of Precambrian, Palaeozoic Mesozoic and Cenozoic rocks of India.

IV. Crystallography and Mineralogy :

Law of crystallography, elements of crystal symmetry, crystallographic notations and twining. Study of forms and symmetry elements of normal classes of various crystal systems. Contact goniometer. Crystal bonding and internal structure of crystals.

Physical, chemical and optical characteristics of important silicate mineral groups. viz., Quartz, Felspar, Felspathoid, Olivine, Pyroxene, Amphibole, Mica, Chloride and Garnet. Structure of silicate minerals. Physical properties and chemical composition of important ore minerals. Petrological microscope, micol prism, birefringence, pleochroism, extinction, uniaxial and biaxial characteristic of minerals. Optical signs.

V. Igneous, Sedimentary and Metamorphic Petrology :

Composition of magmas. Forms, structure, textures and classification of igneous rocks. Phase rule, crystallisation of unicomponent and bicomponent silicate melts. Crystallisation of common basaltic magma. Bowen's reaction series, magmatic differentiation and assimilation. Petrography and petrogenesis of common igneous rocks.

Sedimentary processes, lithification and diagenesis. Heavy minerals. Structures, textures, classification and depositional environment of sedimentary rocks. Physical parameters of sedimentary grains. Petrography and petrogenesis of important sedimentary rocks.

Agents, kind, depth zones, facies and grades of metamorphism. Structures, textures and classification of metamorphic rocks. Petrography and petrogenesis of important metamorphic rocks.

VI. Economic Geology and Applied Geology :

Processes of formation of mineral deposits. Mode of occurrence, distribution, uses and origin on important metallic and nonmetallic mineral deposits of India. Coal, petroleum and radioactive minerals deposits of India.

Elementary idea of various geophysical methods of prospecting. Elements of Ground Water Geology and Engineering Geology. Surveying instruments and their use.Elementary knowledge of mineral dressing. Application  of photogeological techniques.

VII. Geology and Mineral Wealth of Rajasthan :

Lithostatigraphic divisions, tectonic and structural features of the geology of Rajasthan. A study of the geology of Rajasthan from Precambrians to Recent. Mineral wealth of Rajasthan and the mineral based industries. Knowledge of major mining regions, dams, reservoirs, engineering projects, hydroelectric projects, thermal power plants, fuel resources and ground water potential of the State of Rajasthan

Go TO RPSC Examination Syllabus Page