05/01/2018 · Hess proposes sea-floor spreading 1960

Sea floor spreading can stop ..

Seafloor spreading hypothesis hess - …

Unlike Wegener, he was able to see his seafloor-spreadinghypothesis largely accepted and confirmed as knowledge of the ocean floorincreased dramatically during his lifetime.

A profound consequence of seafloor spreading is that new crust was, andis now, being continually created along the oceanic ridges.

Theory and Evidence of Seafloor Spreading | Earth Eclipse

His basic idea of seafloor spreading alongmid-oceanic ridges has well withstood the test of time.

Hess, who served for years as the head of Princeton's Geology Department,died in 1969.

The Theory of Seafloor Spreading Seafloor spreading is a geologic process ..

By explaining both the zebralike magnetic striping and the constructionof the mid-ocean ridge system, the seafloor spreading hypothesis quicklygained converts and represented another major advance in the developmentof the plate-tectonics theory.

Evidence of Sea Floor Spreading


Hesss original hypothesis was that sea floor spreading …

When the agesof the samples were determined by paleontologic and isotopic dating studies,they provided the clinching evidence that proved the seafloor spreadinghypothesis.

term:hess = theory of seafloor spreading Study Sets …

New oceanic crust forming continuously at the crest of the mid-ocean ridgecools and becomes increasingly older as it moves away from the ridge crestwith seafloor spreading (see text): a. the spreading ridge about5 million years ago; b. about 2 to 3 million years ago; and c.present-day.
Early in the 20th century, (those who study the Earth'sancient magnetic field) -- such as Bernard Brunhes in France (in 1906) andMotonari Matuyama in Japan (in the 1920s) -- recognized that rocks generallybelong to two groups according to their magnetic properties.

Harry Hammond Hess: Spreading the Sea Floor

But the Vine-Matthews explanation of magnetic striping of theseafloor a year later and additional oceanic exploration during subsequentyears ultimately provided the arguments to confirm Hess' model of seafloorspreading.

emergence of the seafloor-spreading hypothesis and ..

With seafloor spreading, the continentsdid not have to push through the ocean floor but were carried along as theocean floor spread from the ridges.

In 1962, Hess was well aware that solid evidence was still lacking to testhis hypothesis and to convince a more receptive but still skeptical scientificcommunity.

How does seafloor spreading occur? | Socratic

Thus, Hess' ideas neatly explained why the Earth does not get bigger withsea floor spreading, why there is so little sediment accumulation on theocean floor, and why oceanic rocks are much younger than continental rocks.

The Sea Floor Spreading was put forth by Harry Hess

We now know thatmost of the geologic processes occurring on land are linked, directly orindirectly, to the dynamics of the ocean floor.

"Modern" measurements of ocean depths greatly increased in the19th century, when deep-sea line soundings ( surveys)were routinely made in the Atlantic and Caribbean.