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Read : June 2020

FORAMINIFERA

Posted on :- 2020-06-17 13:40:53
INTRODUCTION:- Micropaleontology is concerned with microfossils and nanofossils (the latter being smaller than 50 μm), the study of which must, of necessity, be carried out using the light or electron microscope. Such microfossils are:-1- The remains of unicellular and multicellular micro-organisms.2- The dissociated elements and skeletal fragments of macro-organisms. They consist of these types: Foraminifera, Ostracods, Coccolithophora, Diatoms, Radiolaria, and Dinoflagellates. Among this...
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Climatic Classification-The Köppen System

Posted on :- 2020-06-10 19:30:24
Climatic Classification— The Köppen System A widely used classification of world climates based on the annual and monthly averages of temperature and precipitation was devised by the famous German scientist Waldimir Köppen (1846–1940). Initially published in 1918, the original Köppen classification system has since been modified and refined. Faced with the lack of adequate observing stations throughout the world, Köppen related the distribution and type of native vegetation to the vari...
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FAUNA OF SIWALIK GROUP

Posted on :- 2020-06-10 16:40:18
The Shiwalik Group is well known for its wealth of vertebrate fauna, though they are confined to only certain horizons and only some of them are of biostratigraphic importance. Of added significance is the occurrence of hominoids in almost all the formations. The following list of fauna is selected from among these reported forms the different formations LOWER SHIWALIKCarnivora: Amphicycon so., ViverrachinjiensisProboscidea: Deinotherium, Gomphotherium, StegolophodonSuidae: Listriodon, Conohys...
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DEFORMATION AND COMPONENT OF DEFORMATION

Posted on :- 2020-06-09 15:28:09
DEFORMATION the term refers to the distortion (strain) that is expressed in a (deformed) rock. This is also what the word literally means: a change in form or shape. However, rock masses can be translated or rotated as rigid units during deformation, without an internal change in shape. For instance, fault blocks can move during deformation without accumulating any internal distortion. Many structural geologists want to include such rigid displacements in the term deformation, and we refer to...
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Earth’s Magnetic Field

Posted on :- 2020-06-05 10:40:25
Earth's magnetic field (and the surface magnetic field) is approximately a magnetic dipole, with the magnetic field S pole near the Earth's geographic north pole ( Magnetic North Pole) and the other magnetic field N pole near the Earth's geographic south pole ( Magnetic South Pole). The magnetic field is generated by electric currents due to the motion of convection currents of a mixture of molten iron and nickel in the Earth's outer core: these convection currents are caused b...
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