ocean crust sentence in Hindi
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- Because the field has reversed directions at irregular intervals throughout its history, the pattern of geomagnetic reversals in the ocean crust can be used as an indicator of age.
- The magnetic data he collected from the ocean crust later was interpreted as containing field reversals that were used by Canadian geophysicist Lawrence Morley to prove seafloor spreading and plate tectonics.
- "' Sir Edward " Teddy " Crisp Bullard "'geothermal heat flow through the ocean crust, and was one of the first to find new evidence for the theory of continental drift.
- This was the first time such a feat had been accomplished in intact ocean crust and was ranked by Discover Magazine as one of the top eight Earth Science stories of 2006.
- It turned out, however, that the abyss is alive with volcanic fissures that form the ocean crust, circulate huge masses of sea water and feed unusual forms of life adapted to volcanic heat and chemistry.
- The dominant school holds that early volcanic isles and micro-continents ( like Iceland or Japan ) could have traveled along this tectonic conveyor belt and been sandwiched together as the ocean crust plunged downward in subduction zones.
- It is the eroded remnants of a mountain range formed 1.2 billion years ago . " The park provides a rare example of the process of continental drift, where deep ocean crust and the rocks of the earth's mantle lie exposed ."
- During the early stages of this mountain building known as the Taconic orogeny, a piece of ocean crust from the Iapetus ocean broke off and became incorporated into the collision zone and now forms the oldest bedrock strata of Staten Island, the serpentinite.
- During the last half of the Mesozoic Era, the Age of the Dinosaurs, much of today's California, Oregon, and Washington were added to North America . western North America suffered the effects of repeated collision as slabs of ocean crust sank beneath the continental edge.
- To the west of the Levantine Deep Marine Basin is the Nile Delta Basin, followed by the Herodotus Basin, 130, 000 km?large and up to 3, 200 meters deep, which-at a possible age of 340 million years-is believed to be the oldest known ocean crust worldwide.
- Lavas from Mauna Kea intersect with Mauna Loa's basal flows as a consequence of Kea's older age, and Mauna Kea's original rift zones were buried beneath post-shield volcanic rocks of Mauna Loa; additionally, Mauna Kea shares Mauna Loa's gravity well, depressing the ocean crust beneath it by.
- The important step Hess made was that convection currents would be the driving force in this process, arriving at the same conclusions as Holmes had decades before with the only difference that the thinning of the ocean crust was performed using Heezen's mechanism of spreading along the ridges.
- This definition has been challenged recently because new studies of oceanic crust by the Integrated Ocean Drilling Program and other research cruises have shown that in situ ocean crust can be quite variable, and that in places volcanic rocks sit directly on peridotite tectonite, with no intervening gabbros.
- A close-up look at the Cascades reveals a more complicated picture than the simple subduction zone shown in the image on theleft . Not far off the coast of the North Pacific lies a spreading ridge; a divergent plate boundary made up of a series of breaks in the oceanic crust where new ocean crust is created.
- Ophiolite assemblages in the Alps and some other collisional mountain belts are not formed during subduction, but rather represent the thinned margin of the continent that forms during rifting and continental drift . This incipient ocean crust remains locked to the continental margin when the ocean basin closes, emplacing the incipient ocean crust into the collision zone.
- Ophiolite assemblages in the Alps and some other collisional mountain belts are not formed during subduction, but rather represent the thinned margin of the continent that forms during rifting and continental drift . This incipient ocean crust remains locked to the continental margin when the ocean basin closes, emplacing the incipient ocean crust into the collision zone.
- The processes could possibly vary depending on the active or passive type of margin encountered, such as gravity surveys have implied that the ophiolite is underlain by continental crust whose relative buoyancy uplifted the ocean crust, which in some circumstances could eventually lead to sliding onto the accretionary wedge ( or now Eratostines seamount subducted for Troodos ).
- More generally, the work should help reveal some of the far-reaching effects of the deep vents : how they produce rich metallic ores ( including gold ), how the earth's fiery interior heats the oceans and atmosphere ( affecting climate ) and how far down microbes in the hot ocean crust live ( possibly comprising a previously undiscovered realm ).
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