Results 191 to 200 of about 1,610 (241)

Seafloor spreading in the western Gulf of Aden

Nature, 1978
Interpretation of a new magnetic survey suggests that the evolution of the Gulf of Aden involved at least two phases of seafloor spreading. A recent phase from about 5 Myr ago to the present is well established and an early phase from about 30–15 Myr ago seems most likely.
R. W. Girdler, P. Styles
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Plateaus from seafloor spreading

Nature Geoscience, 2019
Ocean-floor plateaus are not voluminous lava flows from central volcanoes as thought, but anomalously thick oceanic crust, suggest magnetic anomaly patterns from the Shatsky Rise, in the northwestern Pacific Ocean.
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Seafloor Spreading in the Mozambique Channel

Nature Physical Science, 1972
Magnetic profiles across the Mozambique Channel limit any interpretation of the movement of Madagascar relative to the African mainland. Recent reconstructions of Gondwanaland are not compatible with this evidence.
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Physical modeling of slow seafloor spreading

Journal of Geophysical Research: Solid Earth, 1994
A properly scaled thermo‐mechanical experimental model of slow seafloor spreading is developed to investigate the mechanism of lithosphere accretion. The melt of a specially fabricated hydrocarbon compositional system is cooled from above in a tank. The crystallizing upper layer (the lithosphere) possesses semiplastic‐semibrittle properties. Horizontal
Alexander I. Shemenda, Andrey L. Grocholsky   +1 more
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Dating the Spreading Seafloor

2010
In 1912 a German Meteorologist, Alfred Wegener, took the drastic step of moving into another science altogether by publishing the shocking geologic theory that our continents have been sailing across the surface of the earth like leaves on a lake blown by—what?
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Seafloor spreading history of the Agulhas Basin

Earth and Planetary Science Letters, 1979
Data gathered by recent “Islas Orcadas” cruises reveal the seafloor spreading pattern for a region south of the Agulhas/Falkland fracture zone system. The presence of a magnetic anomaly bight about the Agulhas Plateau indicates that the Agulhas Plateau may have developed at the site of a tectonic plate triple junction during the Late Cretaceous.
John L. Labrecque, Dennis E. Hayes
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Asymmetric Seafloor Spreading south of Australia

Nature, 1971
SINCE mid-1968, the National Science Foundation research vessel Eltanin has operated south of Australia on a systematic geological, geophysical, and oceanographic reconnaissance. North–south tracks at a spacing of 5° longitude or closer transect the area of interest from 140° E to 105° E.
JEFFREY K. WEISSEL, DENNIS E. HAYES
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Hydrothermal mineralization at seafloor spreading centers

Earth-Science Reviews, 1984
The recent recognition that metallic mineral deposits are concentrated by hydrothermal processes at seafloor spreading centers constitutes a scientific breakthrough that opens active sites at seafloor spreading centers as natural laboratories to investigate ore-forming processes of such economically useful deposits as massive sulfides in volcanogenic ...
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2. Seafloor spreading and magnetic anomalies

2015
‘Seafloor spreading and magnetic anomalies’ begins with the Vine–Matthews Hypothesis, which proposed that strips of seafloor parallel to the mid-ocean ridges, where two plates diverge from one another, were magnetized in opposite directions because the Earth’s field had reversed itself many times.
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Temporal and spatial variation of seafloor spreading at ultraslow spreading ridges: Contribution of marine magnetics

Earth and Planetary Science Letters, 2023
Jérôme Dyment
exaly