PART - II : 200 Marks
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Marks
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Lectures
/Periods |
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| Theory | ||||
| Paper - II | A. Crystallography and Optical Mineralogy |
30 (10 + 20)
|
35
|
|
| B. Mineralogy |
45
|
35
|
||
| C. Palaeontology I |
25
|
25
|
||
| Paper - III | A. Igneous Petrology |
45
|
50
|
|
| B. Sedimentary Petrology |
25
|
25
|
||
| C. Metamorphic Petrology |
30
|
25
|
||
| Practical | ||||
| Paper - IV | A | 1. Crystallography |
10
|
16
|
| 2. Structural Geology |
25
|
40
|
||
| B | 1. Hand Specimens of Minerals and Rocks |
25 (15 + 10)
|
60
|
|
| 2. Optical Mineralogy |
15
|
50
|
||
| 3. Palaeontology |
10
|
18
|
||
| 3. General Viva-Vocé |
15
|
|||
| Total |
400
|
|||
|
Marks
|
Lectures
/Periods |
|||
| Theory | ||||
| Paper - V | A. Principles of Stratigraphy and Sedimentation |
30
|
30
|
|
| B. Palaeontology II |
40
|
40
|
||
| C. Geodynamics |
30
|
30
|
||
| Paper - VI | A. Indian Stratigraphy |
50
|
60
|
|
| B. Economic Geology |
50
|
50
|
||
| Practical | ||||
| Paper - VII | A. Petrography of Igneous Rocks |
35
|
40
|
|
| B | 1. Petrography of Sedimentary Rocks |
15
|
14
|
|
| 2. Petrography of Metamorphic Rocks |
30
|
30
|
||
| C. General Viva-Vocé |
20
|
|||
| Paper - VII | A. Structural Geology |
50
|
50
|
|
| B. Palaeontology |
50
|
50
|
||
| Total |
400
|
|||
Elementary information on solar system and lunar geology. Origin of the Earth; clues to the origin, accretionary models. Formation of crust, mantle, core, hydrosphere and atmosphere.
Earth System Science: atmosphere, hydrosphere, biosphere, solid earth. Historical development of Geology: Neptunism, Plutonism, Uniformitarianism, Law of superposition, Law of faunal succession; Contributions of Hutton, Werner, Smith and Lyell.
Surface processes: weathering; regolith, bed rock, soils and soil profile; erosion; mass wasting; transportation and deposition by wind, river, glacier, groundwater and ocean; landforms in relation to lithology, strucutre and exogenic processes. Evidence of global glaciation, ice ages.
Lithospheric plates, present day configuration and relative motion of plates.
Internal processes: volcanoes and volcanism, distribution of volcanoes. Earthquakes: causes of earthquakes and their effects, intensity and magnitude, earthquake belts, factors controlling their distribution; seismic zones of India; seismic waves, travel-time curve for seismic waves, seismic discontinuities. Geothermal gradient, heat flow.
Internal constitution of the earth - evidence from seismic waves, meteorites and rocks.
Gravity measurement and gravity anomaly; concept of isostasy, hypotheses of Pratt and Airy.
Relative ages of geological bodies; absolute ages of rocks and minerals; fundamental principles of radiometric dating. The Earth's age. The geological time scale up to the level of eras and periods.
Geological hazards and their mitigation: Earthquakes, Volcanoes, Landslides, Floods. Elementary idea of remote sensing.
Oceanic and atmosphere circulations.
Gilluly, J., Waters, A.C. and Woodford, A.G.: Principles of Geology.
Duff, P. and McL., D. (ed.): Holmes' Principles of Physical Geology.
Press, F. and Siever, R.: Earth.
Read, H. H. and Watson, J.: Introduction to Geology, V. I.
Strahler, A.: Principles of Physical Geology.
Emiliani: Planet Earth.
Deformation of rocks: concept of stress, normal stress, shear stress, principal axes of stress, planes of maximum shear stress; concept of strain, longitudinal and shear strain, principal axes of strain, homogeneous and inhomogeneous strain, rotational and irrotational strain, pure shear and simple shear, strain ellipse and strain ellipsoid, representation of strain ellipsoid in Flinn's diagram; factors controlling deformation behaviour of rocks – confining pressure, temperature, time, solution; creep of rocks, elastic, viscous and plastic behaviour.
Penetrative and non-penetrative structural elements: primary and secondary planar and linear structural elements, strike and dip, pitch and plunge, representation of planes and lines in stereographic and equal area projection diagrams. Outcrops of planes on horizontal and uneven surfaces: outlier and inliear. Scales of observation of structures.
Deformation of layered rocks: folds, parts of a fold, antiform, synform, neutral fold, anticline, syncline, nomenclature of folds based on fold shape and orientation of axis and axial plane. Ramsay's classification of folds, variation of thickness of folded layers, isogons. Outcrops of folded planes on horizontal and sloping surfaces. Relation between major folds and minor folds. Concept of buckle (flexure), flexure slip, bonding and slip (shear) folds, geometrical characteristics of folds formed by buckling and inhomogeneous simple shear.
Fracturing of rocks: tension and shear fractures: Joint sets and joint systems, relation to joints. Faults: translational and rotational movements, slip and separation, nomenclature of faults based on geometrical relation of faults to beds, slip and separation. Effects of faults on outcrop of strata, horst and graben, autochthon, allochthon, nappe, window and klippe, criteria for recognition of faults.
Foliation: morphological features of cleavage and schistosity, relation of cleavage and schistosity to major folds, Powell's classification of rock cleavage.
Lineation: Different types of secondary linear structures in rocks, mineral lineation, intersection lineation, striping, stretching (elongation) lineation, mullion, rodding, boudinage, relation of lineation to folds.
Unconformity: types of unconformity, criteria for distinguishing unconformity from faults and intrusive contacts.
Davis, G.H. and Reynolds, S. J.: Structural Geology of Rocks and Regions.
Ghosh, S.: Structural Geology.
Marshak, S. and Van-der-Pluijm: Structural Geology.
Hatcher, R. D., Jr.: Structural Geology.
Twiss, R. J. and Moores, E. M.: Structural Geology.
Crystallography (Full Marks - 10):
Essential characteristics of crystalline and non-crystalline states of matter.
Crystal measurements: interfacial angle, zone, law of constancy of interfacial angles, principles of stereographic projection, notation of crystal faces, edges and comers, crystallographic axes, Miller indices, law of rational indices, general zonal relations of faces.
Crystal symmetry: periodic repetition, elements of symmetry, HermannMauguin symmetry notation, crystal forms - classification and nomenclature.
Classification of crystals into 7 systems and 32 classes; their Hermann Mauguin notation and representation of symmetry elements.
Crystal habit, types of crystal aggregates, twinning in crystals.
Space lattice, unit cell.
Diffraction of X-ray by crystal lattice, Bragg's law.
Optical Mineralogy (Full Marks - 20)
Optical behaviour of crystals: isotropic and anisotropic media, double refraction, use. of clacite to illustrate double refraction, polarization of light; methods of production of plane polarized light, different types of polaroids (construction of Nicol Prism not necessary), anatomy of a polarizing microscope. Pleochroism, optical indicatrix of uniaxial and biaxial crystals. Outline method of estimation of refractive index by liquid immersion.
Inteference phenomena in crystals, order of interference colour, birefringence, extinction phenomenon.
Outline of methods of determination of refractive indices.
Interference phenomena in convergent light, interference figures, methods of determination of optic sign.
Physical properties of minerals: form and structure, colour and transparency, lustre, streak, specific gravity, hardness, cleavage, fracture, para-, dia- and ferro-magnetic properties, radioactivity.
Crystal chemistry: different types of chemical bonding, co-ordination principle, Pauling's rule. Polymorphism: displacive and reconstructive transformation, order-disorder transformation as displayed by K-feldspars, enantiotropy and monotropy, polymorphs of carbon, SiO2, CaCO3, Al2SiO5. Diadochy vis-à-vis solid solution, exsolution principle (example from alkali feldspar), pseudomorphism.
Classification of minerals: native elements, sulphides, oxides, carbonates, silicates, sulphates and phosphates.
Classification of silicates on the basis of linking of SiO4 tetrahedra, examples of minerals in each class, outline of atomic structures of pyroxene, amphibole and mica group of minerals.
Descriptive Mineralogy:
(a). Chemical compositions and diagnostic physical properties
of the following minerals: Haematite, magnetite, goethite,
ilmenite, chromite, pyrolusite, psilomelane, bauxite;
Pyrite, chalcopyrite, pyrrhotite, sphalerite, galena;
Calcite, aragonite, dolomite, magnesite, siderite, malachite;
Fluorite, gypsum, barite, wolframite, apatite, graphite;
Quartz, feldspars, muscovite, biotite, beryl, tourmaline,
garnet, serpentine (including asbestos variety), talc,
chlorite, kyanite, sillimanite, staurolite.
(b) Classification of the following groups of rock-forming
minerals: Silica minerals, feldspars, olivines, pyroxenes,
amphiboles, micas, garnets. Diagnostic optical properties:
Quartz, feldspars, feldspathoids (nepheline, leucite),
olivines, pyroxenes (pyroxene quadrilateral), amphiboles
(tremolite, actinolite, hornblende, anthophyllite), micas
(muscovite, biotite), chlorite, cordierite, staurolite,
epidote-zoisite-clinozoisite.
Berry, L. G. and Mason, B.: Mineralogy.
Deer, W. A., Howie, R. A. and Zussman, J.: An Introduction to Rock forming Minerals (Condensed Volume).
Klein, C. and Hurlbut, C. S. (Jr.): Manual of Mineralogy.
Nesse, D.: Introduction to Optical Mineralogy.
Wahlstrom, E. E.: Optical Crystallography.
Winchell, A. N.: Elements of Optical Mineralogy.
Introduction: Fossils: definition, kinds and uses, scope and subdivisions of palaeontology.
Fossilization: definition, condition (physico-chemical) and modes of preservation of ancient life forms, taphonomy; imperfections of fossil record; uses of fossils.
Elementary ideas about taxonomy: classification of organic kingdom upto the level of phyla. Concept of species and types: typomorphic, evolutionary and phylogenetic systematics. Binominal system of nomenclature, rules and procedure for naming a new species.
Stratigraphic palaeontology: fossils as constituent of rocks, law of faunal succession; outline of time distribution. Brief idea on earliest metazoa and Precambrian fossils. Appearance and extinction of taxon; index fossil, zone fossil, facies fossil, trace fossil.
Palaeoecology: principles of palaeoecologic study: examples from corals, bivalves and brachiopods.
Principles of palaeogeographic and palaeoclimatic reconstruction on the basis of fossils: examples from corals and plants.
Hard part morphology of brachiopods, bivalves, and corals.
Babin, C.: Elements of Palaeontology.
Baksi, S.: Purajibabidya.
Black, R. M.: The Elements of Palaeontology.
Clarkson, E. N. K.: Invertebrate Palaeontology and Evolution.
Moore, R. C., Lalicker, C. G. and Fischer, A. G.: Invertebrate fossils.
Nield, E. W. and Tucker, V. C. T.: Paleontology: An Introduction.
Raup, D. M. and Stanley, S. M.: Principles of Palaeontology.
Shrock, R. R. and Twenhofel, W. H.: Principles of Invertebrate Palaeontology.
Igneous rocks and magma; pressure and temperature domains of igneous processes; sources of magma; intrusion and extrusion of magmas. Distinctiveness of igneous, metamorphic and sedimentary processes; rock cycle.
Composition of major crustal components and upper mantle. Distribution of igneous rocks in the continental and oceanic crusts with emphasis on the major differences among them.
Forms of igneous rock bodies: description of the major forms of extrusives and intrusives and a general idea of their mode of emplacement: central eruptions, fissure eruptions, pyroclastic deposit, volcanic neck, sill, dyke, ring dyke, cone sheet, laccolith, lopolith, phacolith, stock, batholith. Salient factors controlling the ascent of magma.
Description and origin of the following structures of igneous rocks: vesicular structure, pillow structure, flow banding, flow lines, schlieren, ropy lava, block lava, joints. Concept of lava stratigraphy (identifiction of flows in a trap hill).
(a) Physical properties of magmas: temperature, volatile
content, viscosity, density.
(b) Concept of equilibrium and fractional crystallization,
system, phase component, basic thermodynamic principle
and phase rule, systems involving eutectic, peritectic
and solid solution relations; bivariant field, univariant
curve and invariant point.
(c) Studies on crystallization of melts in the following
systems with particular reference to phase rule: diopside-anorthite,
forsterite-silica, albite-anorthite, albite-orthoclase,
diopside-albite-anorthite, diopside-forsterite-silica;
nepheline-kaliophyllite-silica; petrogeneic applications
of these systems. Bowen's reaction series and its use
in petrogenesis. Role of volatiles in magmatic crystallization.
Description of textures and microstructures of image igneous rocks. General idea of the origin of the following textures and micro-structures: porphyritic, poikilitic, ophitic, perthitic, corona, spherulitic, spinifex.
General knowledge of the basis of classification of igneous rocks mineralogical, textural, chemical and associational. Concept of CIPW norm and its significance (CIPW classification not necessary); concept of Niggli values; Hatch & Wells classification of igneous rocks; IUGS classification of plutonic rocks; TAS diagram for volcanic rocks. Important mineralogical and textural features of the following rocks: alkali feldspar granite, alkali granite, granite, granodiorite, tonalite, trondhjemite, pegmatite, aplite; rhyolite; syenite; foid syenite, diorite; trachyte, phonolite, andesite; dolerite, gabbro, norite, anorthosite; basalt, spilite, oceanite, ankaramite; pyroxenite, peridotite, kimberlite; lamprophyre, carbonatite, pyroclastic rocks including agglomerate, volcanic breccia, ignimbrite, welded tuff, tuff and ash.
Processes of diversification of igneous rocks: differentiation, assimilation, and partial melting. Chemical variation during differentiation - silica variation diagram, Fe-Mg-(Na+K) and Ca-Na-K diagrams. Trend of variation in calc-alkaline and tholeiitic series in AFM diagrams.
General knowledge on the petrogenesis of the following
rocks (with a broad idea only on their distribution in
India):
Granitic rocks, basalts, anorthosites, peridotites, alkaline
rocks.
Best, M. G.: Igneous and Metamorphic Petrology.
Bose, M. K.: Igneous Petrology.
Hall, A.: Igneous Petrology.
Hyndman, D. W.: Petrology of Igneous and Metamorphic Rocks.
Middlemost, E. A. K.: Magmas and Magmatic Rocks.
Philpotts, A. R.: Principles of Igneous and Metamorphic Petrology.
Introduction; brief idea about the processes of sedimentation: breakdown of rocks, mineral stability, transportation and deposition of sediments. General classification of sedimentary rocks – schemes proposed by Grabau, Pettijohn, and Folk.
Texture of sedimentary rocks: definition of clastic and non-clastic textures: components, framework, matrix, cement, allochemical and orthochemical components. Textural parameters: grain size, sphericity, roundness, concept of textural inversion. Computation of grain size statistics (mean, median, mode, sorting index, skewness, kurtosis) - purpose and limitations. Types of non-clastic textures. Concept of maturity, mineralogical and textural indicators of maturity.
Siliciclastic rocks: definitions of conglomerate, sandstone and shale. Conglomerate: composition, classification (Pettijohn's classification). Sandstone: composition, maturity, diagenesis, matrix classification, classification of sandstone (Dott's and McBrides's classification and their comparative study). Shale: classification, composition and clay mineralogy. Carbonate rocks: definition, components and their origin, diagenesis, classification (Folk's and Dunham's classification). Petrography and origin of banded iron formation.
Sedimentary structures: Types and origin with special emphasis on bedding and lamination, ripple marks, cross-lamination, graded bedding, sole marks, mud cracks, penecontemporaneous deformation structures.
Blatt, H., Middleton, G. and Murray, R.: Origin of Sedimentary Rocks.
Folk, R. L.: Introduction to Sedimentary Rocks.
Leeder, M. R.: Sedimentology – processes and products.
Allen, J. R. L.: Principles of physical sedimentology.
Collinson, J. D. and Thompson, D. B.: Sedimentary structures.
Pettijohn, E. J.: Sedimentary Rocks.
Sengupta, S.: Introduction to Sedimentology.
Tucker, M. E.: Sedimentary Petrology – An Introduction.
Concept of metamorphism, types of metamorphic changes: mineralogical, textural, chemical. P- T limits of metamorphism. Elementary ideas on processes of solid state transformation – recrystallization, neocrystallization.
Controlling factors of metamorphism: pressure, temperature, fluids. Types of metamorphism: burial, regional, contact, cataclastic, hydrothermal.
Textures and structures of metamorphic rocks; naming of metamorphic rocks; mineral assemblages and textures of the following rocks: slate, phyllite, schist, gneiss, mylonite, phyllonite, granulite, hornfels, quartzite, marble, clacsilicate rock, serpentinite, greenschist, blueschist, amphibolite, eclogite, mafic granulite, khondalite, charnockite; brief idea about Indian occurrences of charnockites and khondalites. Protoliths of image metamorphic rocks. Growth of porphyroblast in relation to deformation.
Concept of metamorphic grade, isograds, isoreactiongrads, metamorphic zones, index minerals, concept of metamorphic facies, facies classfication, P- T fields of different metamorphic facies, concept of facies series. Interrelation between facies, grade and metamorphic zones, baric divisions of metamorphic grade.
Concept of chemical equilibrium in metamorphic rocks, criteria for equilibrium and disequilibrium, phase rule, mineralogical phase rule and its application. ACF, AKF and AFM diagrams and their use.
Metamorphic phase diagrams, divariant field, univariant curve, invariant point. Discontinuous, continuous and exchange reactions. Stability fields of Al2SiO5 polymorphs, muscovite breakdown reaction, wollastonite forming reaction, concept of petrogenetic grid, role of fluids in these reactions.
Regional metamorphism of pelitic and mafic rocks and contact metamorphism of impure limestones.
Brief idea of retrograde metamorphism, metasomatism and metamorphic differentiation.
Migmatites: Definition and types.
Mason, R.: Petrology of Metamorphic Rocks.
Miyashiro, A.: Metamorphic Petrology.
Winkler, H. G. E.: Petrogenesis of Metamorphic Rocks.
Yardley, B.: Introduction to Metamorphic Petrology.
Study of crystal models: symmetry elements and forms.
Stereograms (with and without stereonets) from given crystallographic data.
Reading and interpretation of topographic contour maps.
Use of Clinometer and Brunton compass, measurement of attitude of planar and linear structural elements.
Graphical solution of true dip-apparent dip problems, three-point problems.
Stereographic projection of structural elements; solution of simple structural problems using a net, e.g., true dip-apparent dip relations, determination of axis of cylindrical folds, vertical and inclined fault problems.
Construction of block diagrams of homoclinal beds, folded beds (plunging, non-plunging, upright, inclined, overturned, recumbent and reclined folds), faulted beds (normal and reverse faults on homoclinal and folded beds).
Interpretation of maps showing outcrops of horizontal and homoclinal beds, unconformity, fault, normal and reverse faults, igneous intrusives and extrusives on flat surface and uneven topography.
Hand specimens of Minerals
and Rocks (Periods - 60)
Minerals (Full Marks - 15):
Systematic study in hand specimen of the minerals listed
below on the following points: form and structure, colour,
transparency, lustre, streak, cleavage, parting, fractures,
hardness, specific gravity, magnetism, and treatment with
dilute HCl.
Haematite, magnetite, geothite, ilmenite, chromite, pyrolusite,
psilomelane, bauxite;
Pyrite, chalcopyrite, pyrrhotite, sphalerite, galena;
Calcite, aragonite, dolomite, magnesite, malachite; Fluorite,
gypsum, barite, wolframite, apatite, graphite; Quartz,
feldspar, pyroxene, amphibole, muscovite, biotite, beryl,
tourmaline, garnet, serpentine (including asbestos variety),
talc, chlorite, kyanite, sillimanite, staurolite.
Rocks (Full Marks - 10):
Study and identification of the following rocks in hand
specimen:
Granite, granite porphyry, pegmatite, syenite, nepheline
syenite, diorite, gabbro, dolerite, anorthosite, basalt,
rhyolite, peridotite, lamprophyre, tuff. Conglomerate,
breccia, sandstone (arkose, quartz-arenite, greywacke),
mudstone, shale, limestone, banded haematite jasper, banded
ferruginous quartzite, laterite. Slate, phyllite, varieties
of mica schists, gneiss, marble, quartzite, amphibolite,
hornblende schist, calc-silicate rock, khondalite, charnockite.
Optical Mineralogy (Full Marks
- 15, Periods - 50)
a. Study of the following minerals in transmitted polarised
light: Quartz, orthoclase, microcline, plagioclase, perthite,
nepheline, olivine, enstatite, hypersthene, augite, hornblende,
tremolite, kyanite, sillimanite, andalusite, cordierite,
staurolite, epidote, zoisite, garnet, tourmaline, zircon,
sphene, muscovite, biotite, chlorite, apatite, carbonate,
scapolite.
b. Becke test, determination of order of interference
colour, use of accessory plates like gypsum; quartz and
mica; extinction angle, scheme of pleochroism of minerals,
determination of optic sign of uniaxial mineral from interference
figure.
Palaeontology (Full Marks -
10, Periods - 18)
Morphology, systematic position and geologic age of the
following:
(i) Brachiopoda: Terebratula, Rhynconella, Atrypa, Athyris,
Spirifer, Productus.
(ii) Bivalvia: Area, Unio, Ostrea, Pecten, Venus, Hippurites,
Gryphea.
(iii) Anthozoa: Halysites, Favosites, Calceola, Zaphrentis,
Montlivaltia.
N.B. Compulsory field work in each academic year.
First year (field work of approximately 10 days): Reconnaissance study of areas with sedimentary, igneous and metamorphic rocks in the field. Collection of samples and field data and preparation of field report.
Second year (field work of approximately 17 days):
a. Geological mapping of a small area, collection and
study of samples and preparation of field report.
b. Tape and compass surveying and use of Brunton compass.
Introduction, concept of strata and sequence of strata formation; laws of superposition and faunal succession, correlation; principle of uniformitarianism.
Stratigraphic units: lithostratigraphic, biostratigraphic and chronostratigraphic units. Geologic time scale.
Facies: definition, lithofacies, biofacies; lateral facies variation, vertical facies variation, Walther's law.
Sedimentary environment: concept, classification. Principles of reconstruction of ancient sedimentary environment from rock record (examples from Shelf, Glacial, Fluvial, Delta).
Principles of stratigraphic correlation.
Boggs, S. (Jr.): Principles of Sedimentology and Stratigraphy.
Shelley, R. C.: Ancient Sedimentary Environment.
Sengupta, S.: Introduction to Sedimentology.
Davis, R. A.: Depositional systems.
Hard part morphology of Gastropoda, Cephalopda, Trilobita, Echinoidea.
Brief account of Indian vertebrates with reference to Gondwana and Siwalik vertebrates: Composition, distribution and importance.
Organic evolution: Theory: (a) speciation, broad patterns, mechanism. (b) examples: evolution of equidae, hominidae and ammonoidea.
Brief account of Indian flora with special reference to Gondwana flora under the following heads: definition, composition, geographic distribution, botanical affinity, climatic implication, stratigraphic distribution.
Babin, C.: Elements of Palaeontology.
Bakshi, S.: Purajibabidya.
Black, R. M.: The Elements of Palaeontology.
Clarkson, E. N. K.: Invertebrate Palaeontology and Evolution.
Colbert, E. H.: Evolution of the Vertebrates.
Nield, E. W. and Tucker, V. C. T.: Palaeontology: An Introduction.
Shukla, A. C. and Misra, S. P.: Essentials of Palaeobotany.
Shrock, R. R. and Twenhofel, W. H.: Principles of Invertebrate Palaeontology.
Continents and oceans, active and passive continental margins, shield, continental rift systems, island arc and trench, marginal basin, oceanic ridges.
Orogeny and epirogeny. Neotectonics: active faults, geomorphological indicators and recurrent seismicity.
Eugeosyncline and miogeosyncline.
Continental drift – geological, palaeoclimatological and palaeontological evidences. Palaeomagnetism – apparent polar wandering curve and continental reconstruction. Gondwanaland and its break-up.
Seafloor spreading, marine magnetic anomlies and their interpretation.
Plate tectonics: concept of lithosphere and asthenosphere, plate boundaries. Relative movement of the plates on a spherical Earth, pole of rotation.
Plate tectonic models for the evolution of ocean basins and mountain belts, Wilson cycle.
Condie, K. C.: Plate Tectonics and Crustal Evolution.
Keary, P. and Vine, E. J.: Global Tectonics.
Moores, E. M. and Twiss, R. J.: Tectonics.
Mussett, A. E. and Khan, M. A.: Looking into the Earth.
Physiographic divisions of India: peninsula, extrapenirisula, Indo-gangetic alluvial plain. Rock record in peninsular and extrapeninsular India.
Subdivision of Precambrian eon-Archaean and Proterozoic. Distribution of Precambrian rocks in India. Outline of Precambrian geology of Bihar-Orissa, Rajasthan, Central India, Karnataka and Eastern Ghats on the following points: stratigraphic sequence, structures and geochronology.
Brief account of stratigraphy of the Cuddapah and Vindhyan Supergroups in their type areas.
Outline of Phanerozoic stratigraphy (classification,
correlation, succession, biostratigraphy and conditions
of deposition) of the following:
a. Extrapeninsular basins (Kashmir, Spiti, Assam-Arakan)
b. Peninsular basins (Kutch, Kaveri-Coromandal coast,
Bengal)
c. Gondwana basins: general characters and classification
of the Indian Gondawanas, stratigraphy of the Damodar
Valley and Godavari basins.
d. Siwalik basin.
A brief outline of the age of the Deccan Traps, stratigraphy of intertrappean and infratrappean beds.
Krishnan, M. S.: Geology of India and Burma.
Naqvi, S. M. and Rogers, J. J. W.: Precambrian Geology of India.
Pascoe, E. H.: A Manual of the Geology of India and Burma (3 Volumes).
Sarbadhikary, T.: Bharater Shilastar O Bhutatiyo Itihash.
Scope of the subject. Useful earth materials: rocks, minerals, water, fossil fuels. Metallic and non-metallic deposits. Concept of conventional and non-conventional resources.
Definition of the following terms: ore, protore, gangue, tenor, beneficiation, hypogene and supergene deposits, epigenetic and syngenetic mineral deposits, hyrothermal solution. Forms and structures of ore deposits.
Processes of formation of mineral deposits: igneous,
sedimentary and metamorphic.
Igneous: Magmatic crystallization, segregation, immiscibility
and differentiation. Mineral deposits as related to different
stages of magmatic crystallization - early and late magmatic
deposits, hydrothermal deposits, hypothermal, mesothermal,
epithermal, telethermal and xenothermal. Cavity filling
and replacement deposits.
Sedimentary: Mechnical, chemical and biochemical
processes. A brief introduction to modem seafloor resources.
Metamorphic: Metamorphosed and metamorphic mineral
deposits, metasomatic deposits. Oxidation and supergene
enrichment.
Classification of mineral deposits (Lindgren and Bateman); metallogenic epochs and provinces.
Geologic and geographic distribution and resource position of the following important economic mineral deposits of India. Metallic: Fe, Mn, Cr, Ni, Cu, Pb-Zn-Ag, Au, U, Th, Ti, Sn, W. Non-metallic: Bauxite, mica, phosphate, fluorite, limestone, barite, refractories, asbestos, diamond, graphite, monazite.
Mode of occurrence, geological set-up, mineralogy, geographic distribution and probable genesis of gold (Kolar, Hutti), copper (Singhbhum, Malanchkhand), iron (Bihar, Orissa), manganese (Central India), Pb-Zn-Ag (Zawar), Uranium (Singhbhum).
Desirable specifications of the minerals used as essential raw materials in the following industries: iron and steel, cement, refractories, fertilizer.
Coal: classification (peat, lignite, bituminous, anthracite), constitutents of coal, viz., vitrain, durain, clarain, fusain. Origin and Indian distribution of coal.
Petroleum: indication, migration, accumulation and origin. Distribution of productive oil-bearing horizons in India.
Groundwater: Definition, aquifer, aquitard, aquiclude, water table, porosity, premeability, Darcy's law, zone of saturation, zone of aeration. Importance of groundwater.
Banerjee, D. K.: Mineral Resources of India.
Brown, J. C. and Dey A. K.: Coal and Nuclear Fuel.
Chandra, D.: Petroleum.
Deb, S.: Industrial Minerals and Rocks of India.
Edwards, R. and Atkinson, K.: Ore Deposit Geology and its Influence on Mineral Exploration.
Evans, M.: An Introduction to Ore Geology.
Gokhale, K. V. G. K. and Rao, T. E.: Ore Deposits of India.
Jensen, M. L. and Bateman, A. M.: Economic Mineral Deposits.
Todd, D. K.: Groundwater Hydrology.
Study under microscope of the following textures of igneous rocks: Porphyritic, poikilitic, ophitic, intergranular, intersertal, graphic, perthitic, myrmekitic, hypidiomorphic, allotriomorphic, corona, flowage.
Description and identification by microscopic characters
of the following rocks:
Granite, granodiorite, tonalite, syenite, nepheline syenite,
aplite, granophyre, diorite, gabbro, anorthosite, pyroxenite,
peridotite, mica-lamprophyre, dolerite, basalt, andesite.
Plotting of mineralogical and chemical data in triangular diagram.
C.I.P.W. norm calculation of granitic and basic rock (without foid).
Sedimentary Rocks: (Full Marks
- 15, Periods - 14)
Microscope study and recognition of the following rocks:
sandstone (arkose, quartz arenite, and greywacke), limestone,
calc-arenite, chert, tuffaceous sediments.
Metamorphic Rocks: (Full Marks
- 30, Periods - 30)
(a) Description and identification by microscopic characters
of the following rocks: quartzite, marble, schists (including
biotite -, muscovite-, chlorite-, gamet-, staurolite-,
actionlite-, hornblende-, kyanite-, sillimanite schists),
amphibolite, granitoid gneiss, chamockite, khondalite,
calc-silicate rock, mafic granulite.
(b) Construction of ACF & AKF diagrams and finding out
the mineral assemblages of pelitic rock in greenschist
and amphibolite facies.
Study in the field of two economic mineral deposits and study of surface geology of these two deposits.
Interpretation of maps showing outcrops of unconformity, intrusive bodies, folds, faults, folded faults and nappes on uneven and flat surfaces.
Completion of outcrops of homoclinal beds, unconformity and fault on uneven topography from partial outcrops or other clues.
Study of fossil specimens exemplifying various modes of preservation: body fossil, internal mould, external mould, impression, petrifaction.
Morphology, systematic position and geologic age of
the following:
(a) Plants: Glossopteris, Gangamopteris, Vertebraria,
Ptilophyllum, Schizoneura, PterophylIum, Cladophlebis,
Dadoxylon.
(b) Vertebrates (molar teeth) : Equus, Hipparion, Rhinoceros,
Stegodon.
(c) Invertebrates:
(i) Trilobita: Calymene, Phacops.
(ii) Gastropoda: Turritella, Cerithium, Nerita, Natica, Conus, Murex, Cyprea, Physa, Bellerophon.
(iii) Cephalopoda: Nautilus, Ceratites, Perisphinctes, Macrocephalites, Belemnites, Acanthoceras.
(iv) Echinoidea: Hemiaster, Breynia, Schizaster, Echinolampas, Stygmatopygus, Clypeaster. 3. Determination of the age of an assemblage of fossils.
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