Turtle wax hybrid solutions ceramic hydro washJul 30, 2017 · GEOLOGY PAPER – I. General Geology: The Solar System, Meteorites, Origin and interior of the earth and age of earth; Volcanoes- causes and products, Volcanic belts; Earthquakes-causes, effects, Seismic zones of India; Island arcs, trenches and mid-ocean ridges; Continental drifts; Seafloor spreading, Plate tectonics; Isostasy. Once seafloor spreading was recognized as a viable mechanism for moving the lithosphere, geologists realized that these "apparent polar wander paths" could be used to reconstruct the past motions of the continents, using the assumption that the pole was always in about the same place (except during reversals).

Oct 18, 2018 · rishi upsc — October 18, 2018 add comment CONTINENTAL DRIFT THEORY From the known records of the history of science, it was Abraham Ortelius, a Dutch map maker, who first proposed such a possibility as early as 1596. Jul 30, 2017 · GEOLOGY PAPER – I. General Geology: The Solar System, Meteorites, Origin and interior of the earth and age of earth; Volcanoes- causes and products, Volcanic belts; Earthquakes-causes, effects, Seismic zones of India; Island arcs, trenches and mid-ocean ridges; Continental drifts; Seafloor spreading, Plate tectonics; Isostasy.

Jan 07, 2016 · Seafloor spreading is a process that occurs at mid oceanic ridges where new oceanic crust is formed through volcanic activity and then gradually moves away from the ridge. Occurs due to mantle convection. Mantle Convection is a slow churning motion of Earth’s mantle. Usually occurs at divergent plate boundaries. The uppermost outer solid and rigid layer of the earth is called crust. Its thickness varies considerably. · It is as little as 5 km thick beneath the oceans at some places but under some mountain ranges it extends upto a depth of 70 km.

Further, she describes the process on how exactly the sea floor spreading is occurring. The evidence which proves the seafloor spreading are also discussed in detail. Geography of UPSC CSE: Geomorphology - Theories of Origin and Evolution of Earth Once seafloor spreading was recognized as a viable mechanism for moving the lithosphere, geologists realized that these "apparent polar wander paths" could be used to reconstruct the past motions of the continents, using the assumption that the pole was always in about the same place (except during reversals). DSDP provided crucial data to support the seafloor spreading hypothesis and helped to prove the theory of plate tectonics. DSDP was the first of three international scientific ocean drilling programs that have operated over more than 40 years. Sep 11, 2020 · HotSpots and Mantle Plumes | UPSC – IAS One augmentation to plate tectonic theory was introduced at the same time as the original model. The basic theory of plate tectonics can explain tectonic and volcanic activity along the margins of plates, however, there are many places on Earth where magma rising from the mantle comes either to or ...

Seafloor spreading and othe... Seafloor spreading is a geologic process in which tectonic plates—large slabs of Earth's lithosphere—split apart from each other. The seafloor’s permanent magnetic signatures showed that new ocean crust was created at the ridge crests and then spread outward in both directions. This seafloor spreading hypothesis had been proposed a few years earlier by Harry Hess, a petrologist at Princeton University, and Robert Dietz, an oceanographer in the US Coast and Geodetic ... Seafloor spreading is a process that occurs at mid-ocean ridges, where new oceanic crust is formed through volcanic activity and then gradually moves away from the ridge. Seafloor spreading helps explain continental drift in the theory of plate tectonics. When oceanic plates diverge, tensional stress causes fractures to occur in the lithosphere.

DSDP provided crucial data to support the seafloor spreading hypothesis and helped to prove the theory of plate tectonics. DSDP was the first of three international scientific ocean drilling programs that have operated over more than 40 years. Seafloor spreading is a geologic process where there is a gradual addition of new oceanic crust in the ocean floor through a volcanic activity while moving the older rocks away from the mid-oceanic ridge.

Aasawari Arun kale on [Download] Topicwise UPSC Mains General Studies Paper-3 (GSM3): Economy, Agriculture, Disaster Management, EIA, Science, Internal Security since new Syllabus of 2013 Nitesh kumar Sahu on [Answerkey] UPSC Prelim-2019: Economy is relatively easier than last year, No Budget-Taxation FancySchemes or Apps Seafloor spreading is the continuous process of forming new igneous rock at mid-ocean ridges by injection of magma that forms new seafloor. The process is continuous because forces cause opposite sides of the mid-ocean ridge to constantly move apart, making new room for the process to repeat.

Jul 31, 2020 · Discuss the concept of sea floor spreading. Laqshya 2021. Share: YOUR E-MAIL ADDRESS* ... I have the distinction of clearing all 6 UPSC CSE Prelims with huge margins. This is a Comprehensive Foundation Course of ‘Geography Optional’ for the UPSC Mains examination.This course has been specially designed by incorporating the recent changes in the question paper of Geography so that students can score maximum marks in the UPSC Mains exam.

Seafloor spreading theory gave all the above answers. H. H. Hess was the first person who gave the details explanation of seafloor spreading. As the lithosphere( crust + upper solid Mantle ) is divided by many plates, the movement of plates happens due to convection cell movement in the Mantle. Seafloor spreading is a process that occurs at mid-ocean ridges, where new oceanic crust is formed through volcanic activity and then gradually moves away from the ridge. Seafloor spreading helps explain continental drift in the theory of plate tectonics. When oceanic plates diverge, tensional stress causes fractures to occur in the lithosphere. Jan 13, 2018 · Q.4. Which one of the following facts were not considered while discussing the concept of sea floor spreading? a. Volcanic activity along the mid-oceanic ridge b. Stripes of normal and reverse magnetic field observed in rocks of ocean floor c. Distribution of fossils in different continents d. Age of rocks from the ocean floor. Q.5.