floor spreading sentence in Hindi
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- Initially, during the Late Jurassic, continued rifting widened the Gulf of Mexico and progressed to the point that sea-floor spreading and formation of oceanic crust occurred.
- When the time scale of magnetic field reversals was confirmed in 1965-66, " most people were convinced that sea-floor spreading was for real,"
- Since the new oceanic basins are shallower than the old oceanic basins, the total capacity of the world's ocean basins decreases during times of active sea floor spreading.
- The Labrador Sea started opening 69 million years ago during the Maastrichtian period but sea-floor spreading appears to have ceased by the Oligocene period 30 35 million years ago.
- Rift episodes were followed by initiation of sea-floor spreading first to the south, then to the east, and finally to the northeast of the Grand Banks area.
- "And once people became convinced of sea-floor spreading, " he added, " that very rapidly led to the theory of plate tectonics ."
- In the early 1970s it began to be widely accepted that the ophiolite represented sea-floor spreading, and subsequently that the Troodos showed geochemical signatures like that of arc volcanics.
- This basin formed in response to the large scale plate tectonic forces that ripped apart the super-continent Pangea and also led to sea-floor spreading in the North Atlantic Ocean.
- Around 83.5 Ma sea floor spreading between India and Antarctica was asymmetric in the Kerguelen Plateau region with two-thirds of the sea floor created being added to the Antarctic Plate.
- Initial studies took place during the early 1970s by the Eltanin Cruises, which took bathymetric and magnetic tracks in order to interpret the general sea floor topography and sea-floor spreading rates.
- It not only provided the basis for confirming the hypothesis of sea floor spreading, but it also was a technique for quantifying rates and amounts of crustal plate movements on a global scale.
- The Austin Chalk formation is filled with micro-organisms known as coccoliths, and are a product of the warm waters that were displaced from the increased sea-floor spreading at the time.
- Australia began to separate from Antarctica perhaps 80 Mya ( Late Cretaceous ), but sea-floor spreading between them became most active about 40 Mya during the Eocene epoch of the Paleogene Period.
- Merrill said it was " probably the best explanation " for the data, but he expressed concern over how different the magnetic patterns on Mars are from the sea-floor spreading seen on Earth.
- Some of " Eltanin "'s research cruises collected magnetic profiles of the sea floor that proved to be pivotal evidence in the acceptance of the continental drift theory, by proving the existence of sea floor spreading.
- This volcanism ended 94 Ma after which sea-floor spreading divided the LIP into the Agulhas Plateau ( south of South Africa ), Northeast Georgia Rise ( near South Georgia Island off South America ), and Maud Rise.
- Thus, the new mobilistic concepts neatly explained why the Earth does not get bigger with sea floor spreading, why there is so little sediment accumulation on the ocean floor, and why oceanic rocks are much younger than continental rocks.
- Rifting in the central segment, however, coincided with the Cretaceous Normal Superchron ( also known as the Cretaceous quiet period ), a 40 Ma period without magnetic reversals, which makes it difficult to date sea-floor spreading in this segment.
- Stretching for hundreds of miles north and south of Eastern Island, 2, 000 miles off the coast of Peru and Chile, this long line of volcanoes is caused by sea floor spreading along the great continental plates of the earth's crust.
- During the Late Cretaceous and Early Oligocene, the earliest period of tectonic stretching of continental crust and formation of horsts, half-grabens, and rotated fault-blocks occurred in association the rifting and later sea-floor spreading that created the South China Sea.
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