Organisation : Tamil Nadu Public Service Commission, TNPSC
Exam Name : Combined Geology Subordinate Service (Examination) 2021
Announcement : Download Syllabus
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TNPSC CGSS Syllabus
Tamil Nadu Public Service Commission (TNPSC), Combined Geology Subordinate Service (Examination) 2021 Syllabus
Related / Similar Syllabus : TNPSC Assistant Director of Town & Country Planning Syllabus 2022
Geology Paper I UG Syllabus
UNIT I – GENERAL GEOLOGY:
Origin, Interior and Age of the Earth – Weathering – Types and products – Geological work of Wind, River, Sea and Groundwater – Volcanoes – Earthquakes – causes and effects – Seismic zonation – Richter Scale – Principles of Plate Tectonics – fundamental and geomorphology.
UNIT II – STRATIGRAPHY:
Principles of Stratigraphy – Correlation – Geological Time Scale – General characteristics, descriptive and economic importance of Archean, Cuddapah, Vindhyan and Gondwana systems of Peninsular India -Cretaceous system of Tamil Nadu.
UNIT III – STRUCTURAL GEOLOGY:
Folds – Faults – Joints – Unconformities – Recognition of overturned beds –Stress and strain relationship – Attitude of beds – Measurement of dip, apparent dip, strike using Cino and Brunton Compass .
UNIT IV – PALAEONTOLOGY:
Fossils – Definitions, Conditions, mode of preservation, uses of Fossils – General morphology and classification of Graptolites, Mollusca, Coelenterata, Brachiopod, Trilobita, Echinoids and Foraminifera.
UNIT V – CRYSTALLOGRAPHY:
Definition of crystals – Inter facial angles – Goniometer -Symmetry Elements – Study of Normal Classes of Isometric, Tetragonal, Hexagonal, Orthorhombic, Monoclinic and Triclinic systems – Twin crystals.
UNIT VI – MINERALOGY:
Physical properties of minerals – Petrologcal Microscope and its parts, accessory plates and uses – optical properties – Isotropic and Anisotropic Minerals – Descriptive study of quartz and its varieties – Feldspar Group – Pyroxene Group – Amphibole Group – Mica Group – Garnet Group – Descriptive study of Calcite, Dolomite, Tourmaline, Topaz, Staurolite, Chlorite and Zircon.
UNIT VII – IGNEOUS PETROLOGY:
Definition of magma – Composition and constitution of magma – Forms and structures of Igneous Rocks, Textures and Micro structures – classification of Igneous rocks – Bowen’s Reaction principle – Descriptive Study of Granite – Syenite – Diorite – Gabbro – Dolerite – Ultramafics (Dunite,Peridotite, Pyroxenite and Anorthosite) – Differentiation – Assimilation.
UNIT VIII – SEDIMENTARY AND METAMORPHIC PETROLOGY:
Classification – Texture and structures of sedimentary rocks – Descriptive study of Residual, Clastic, Chemical and organic deposits – Metamorphism – Agents and kinds of metamorphism – classification of metamorphic rocks – Textures and structure – Different facies – Marble – Schist and Gneiss – Amphibolite – Granulite (Charnockite).
UNIT IX – ENONIMIC GEOLOGY I:
Definition of Ore – Tenor – Gangue – Lindgren and Bateman’s classification of ore deposits – Ore forming processes – Magmatic concentration – Hydrothermal Process Oxidation and Supergene Enrichment – Evaporation – Sedimentation – Placer deposits. Important ores, their composition, physical properties, mode of occurrence, distribution in India and uses of Gold, Iron, Aluminium, Manganese, Copper, Magnesium and Led and Zinc – Lignite, Coal and Petroleum – their occurrence in India – Building Stones, their characters, distribution and mode of occurrence in India – Mineral Wealth of Tamil Nadu.
UNIT X – APPLIED GELOLOGY:
Principles of Geological mapping – Field Techniques – Drilling methods – Borehole problems from borehole data – Geological investigation and conditions for dams, tunnels and roads – Landslides – Mining methods, role of geology – problems in mines including groundwater – Application of Remote sensing in Geology.
Geology Paper I PG Syllabus
UNIT I – GENERAL GEOLOGY AND GEOMORPHOLOGY :
Origin and age of the Earth – Interior of the Earth – Isostasy – Continental drift – Seafloor spreading – Plate tectonics – Volcanoes and earthquakes – Effects and causes – Seismic zonation of India. Landforms – their types and developments – Classification of shorelines and their evolution – submarine canyons – Geosynclines – Island arcs.
UNIT-II – STRATIGRAPHY :
Modern methods of stratigraphic correlation – Cretaceous – Tertiary (K/T) boundary problem with special reference to Tamil Nadu – Nature and age of the Deccan Traps – Cretaceous of Trichy – Classification and economic importance of Dharwar, Cuddapah, Vindhyan, Gondwana group – Palaeozoic formations – Jurassic of Kutch – Siwaliks.
UNIT III – PALEONTOLOGY:
Evolution and stratigraphic importance of Ammonoids, Trilobites and Graptolites – Gondwana flora – their significance and paleoclimatic conditions – Field and laboratory techniques of micropaleontology – Application of micropaleontology in oil exploration.
UNIT IV – STRUCTURAL GEOLOGY:
Mechanical properties of rocks – Mechanics and causes of folding and faulting – Classification of folds and faults – Recognition of folds and faults in the field – Joints – Types of unconformity and their recognition in the field.
UNIT V MINERALOGY AND CRYSTALLOGRAPHY:
Physical, chemical and optical properties of Feldspars, Feldspathoids, Pyroxene, Amphibole, Olivine and Mica groups – Stereographic and Gnomonic projections of natural crystals of normal classes – Derivation of 32 classes of symmetry – Napier’s theorem – Equations of a normal – Bragg’s law – X-ray diffraction method.
UNIT VI – IGNEOUS PETROLOGY:
Classification of Igneous rocks – Petrography and petrogenesis of Granites, Alkaline rocks, Anorthosites, Carbonatite, Ultramafics – Study of binary and ternary system of crystallisation – Bowen’s reaction principle – Diversity of Igneous rocks – variation diagrams – Crystallisation of Basaltic magma.
UNIT VII – SEDIMENTARY AND METAMORPHIC PETROLOGY:
Sedimentary depositional environments – Important clastic and non-clastic rocks – Lithification and Diagenesis – heavy minerals and provenance – Tectonics and sedimentation – Sedimentary basins of India – Paleocurrents and Basin Analysis. Classification of metamorphic rocks – Metamorphic grades and depth zones – Metamorphic facies – Metamorphic differentiation –Thermal – Cataclastic and Reginal Metamorphism – Origin of Eclogites – Charnockitisation – Granitisation – Metasomatism.
UNIT VIII – ECONOMIC GEOLOGY:
Classification of ore minerals – Geological thermometry – processes of ore formation – minerals used in cement, refractory and ceramic industries. Origin, occurrence, distribution and uses ores of Iron, Manganese, Copper, Lead, Zinc and Aluminum – Barite, Graphite, Asbestos and Quartz – occurrence and origin of coal and petroleum in India – Beach placers.
UNIT IX – HYDROGEOLOGY:
Hydrologic cycle – origin and vertical distribution of Groundwater – Aquifers – Porosity – specific yield and retention – Hydrological properties of important deposits and rocks – Groundwater provinces of India -– Groundwater flow- Hydraulic conductivity – Darcy’s Law – Tracer techniques – permeameter – pumping tests – Drilling methods -Estimates of groundwater recharge – Managed aquifer recharge – Seawater intrusion – Groundwater quality and pollution – Electrical methods of groundwater exploration
Unit X – Applied Geology:
Electrical, magnetic, gravity and seismic methods of prospecting – Prospecting for radioactive minerals – Geochemical cycle – Geochemical prospecting – geochemical classification of elements and anomaly – Geological investigation pertaining to Dam foundation, tunnels and roads – Engineering properties of rocks – Types of sampling – ore reserve estimation – Mining methods – Environmental impacts due to mining and mineral processes – Renewable and non-renewable resources – Landslides – Geological hazards including tsunami – Remote sensing, GIS and GPS applications.
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