TNPSC Geology Syllabus

Geology - (Code - 058)
Paper I
Paper II

Paper - I

UNIT I - GENERAL GEOLOGY - Origin, Interior and Age of the Earth - Weathering - Types and products - Geological work of Wind, River, Glacier, and Groundwater - Volcanees - Earthquakes - caulses and effects - Richter Scale - Principles of Plate Tectonics.

UNIT II - STRUCTURAL GEOLOGY - Types of Folds - Types of Faults - Types of Joints - Types of Unconformities - Recognition of Top and Bottom of beds - Clinometer compass and its uses.

UNIT III - STRATIGRAPHY AND PALEONTOLOGY - Principles of Stratigraphy - Correlation - Gelogical Time Scale - General characteristics, descriptive and economic importance of Archean, Cuddapah, Vindhyan and Gondwana systems of Peninsular India - Cretaceous system of Tamil Nadu. General principles of Paleontology - Fossils - Modes of preservation of Fossils - Uses of fossils.

UNIT IV - CRYSTALLOGRAPHY - Definition of crystals - Forms - Faces - Edges - Solid angles - Interfacial angles - Goviameter Symmetry Elements - Study of Normal Classses of Isometricf, Tetragonal, Hexagonal, Orthorhombic, Monoclinic and Triclinic systems - Twin crystals.

UNIT V - MINERALOGY - Petrodlogicsl Microscope, parts, accessories and uses - Physical properties of minerals - Isotropic and Anisotropic Minerals - Descriptive study of quartz and its varities - Feldspar Group - Pyroxene Group - Amphibole Group - Mica Group - Garnet Group - Descriptive study of the following minerals - calcite, Dolomite, Tourmaline, Topaz, Staurolite, Chlorite and Zircon.

Paper - II

UNIT I - IGNEOUS PETROLOGY - Definition of magma - Composition and constitution of magma - Forms and structures of Igneous rocks - Textures and Microstructures of Igneous rocks - Clasification - Bowen's Reaction principle - Descriptive Study of the following - Granite - Syenite - Diorite - Gabbro - Ultramafies (Dunite, Peridotite, Pyroxenite and Anorthosite) - Differantiation - Assimilation.

UNIT II - EDIMETARY AND METAMORPHIC PETROLOGY - Primary structures of sedimentary rocks - classification of sedimentary rocks - Descriptive study of Residual, clastic, Chemical and organic deposits - Definition of Metamorphism - Agents and kinds of metamorphism - classification of metamorphic rocks - Textures of metamorphic rocks - Different fscies - study of marbles - Greenschist - Amphibolite - Granulite (Charnockite).

UNIT III - ENONIMIC GEOLOGY I - Definition of Ore - Tenor - Gangue - Lindgren and Bateman's classification of ore deposites - study of the following ore - forming processes - Magmatic concentration Hydrothermal - Evaporation - Sedimentation - placer deposits - Oxidation and Supergene Enrichment.

UNIT IV - ECONOMIC GELOLOGY II - Important ores, their composition, physical properties, mode of occurrence, distribution in India and uses of the folowing - Gold, Iron, Aluminium, Manganese, Copper, Magnesium and Led and Zinc - Building Stones, their characters, distribution and mode of occurrence in India - Mineral Wealth of Tamil Nadu - Lognite, Coal and Petroleum - their occurrence in India and origin.

UNIT V - APPLIED GELOLOGY - Role of Geology in Mining - Principles of Geological mapping - Drilling Instruments and equipments - Field Techniques - Different methods of power boring, logging, borehole problems - Determination of strike, dip etc., from borehole strata - Investigation for tunnelling and handslides - Geologicsl problems in mines including groundwater.

SINGLE PAPER

Geology - (Code - 058)


UNIT I - GENERAL GEOLOGY :- Weathering: Types and Products - Geological work of wind, River, Groundwater, Glacier and Lakes - Origin, Interior and Age of the Earth.

UNIT II - STRUCTURAL GEOLOGY :- Forms of Igneous rocks - Primary structures of Sediementary rocks - Types of folds - types of faults - Types of unconformity - Clinometer compass and its uses.

UNIT III - STRATIGRAPHY :- Principles of Stratigraphy - Correlation -
Geological Time scale - General characterisitcs and descriptive study of the Archaean, Cuddapah, Vindhyan and Gondwana systems of Peninsular India - Cretaceous system of Tamil Nadu.


UNIT IV - PALEONTOLOGY :- Modes of preservation of fossils - Uses of fossils - Morphological characters of the following groups:- Lamellibrachia, Gasteropodis, Cephalopds, Brachiopods and Triobites.

UNIT V - CRYSTALLOGRAPHY :- Definition of Crystal - Faces - Forms - Interfacial angle - Symmetry - crystallographic axes - Laws of crystallography - Study of the Normal classes of six systems.

UNIT VI - MINERALOGY:- Petrological microscope, parts, accessories and uses - Physical properties of minerals - Descriptive study of the following:- Quartz and its varities, Feldspar, Pyroxene, Amphibole, Mica, Garnet - Andalusite, Kyanite, Sillimanite.

UNIT VII - IGNEOUS PETROLOGY:- Textures and Microstructures of Igneous rocks - Classification Bowen's reaction principle - Descriptive study of the following:- Granite, Syenite, Diorite, Gabbro and Ultramafies - Differentiation and Assimilation.

UNIT VIII - SEDIMENTARY AND METAMORPHIC PETROLOGY:- Classification of Sedimentary rocks - Descriptive study of Residual, Clastic and Organic deposits. Agents and kinds of metamorphism - Study of Greenschists, Amphibolites and Charnockites.

UNIT IX - ECONOMIC GEOLOGY -I :- Definition of Ore, Tenor, Gangue - Bateman's classification of Ore deposits - Study of the following processes:- Magmatic concentration, Hydrothermal, Evaporation, Placer Deposits and Oxidation and Supergene Enrichment - Origin and Occurrence of Coal and petroleum in Iindia.

UNIT X - ECONOMIC GEOLOGY - II :- Study of properties, mode of occurrence, Uses and Distribution in India of the following:- Gold, Iron, Aluminium and Copper. - Descriptive study and uses of the following:- Magnesite, Clay, Calcite and Phosphatic nodules.