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The google earth data right is clearly higher resolution than that version of the scripps map left.
Ocean floor age map. Therefore seafloor dating isn t that useful for studying plate motions beyond the cretaceous. Ages for ocean floor between the oldest identified magnetic anomalies and continental crust are interpolated by geological estimates of the ages of passive continental margin segments. Continental shelf 300 feet continental slope 300 10 000 feet abyssal plain 10 000 feet abyssal hill 3 000 feet up from the abyssal plain seamount 6 000 feet. We had tracked movements of wind over that surface.
Images and animations depicting the crustal age of the ocean floor created by the noaa national centers for environmental information ncei from bathymetric topographic and marine geological and geophysical data. We had measured sea surface temperature. A digital age map of the ocean floor. The following features are shown at example depths to scale though each feature has a considerable range at which it may occur.
This dataset shows the age of the ocean floor along with the labeled tectonic plates and boundaries. Contours of 20 million years are available as a layer that is currently set to invisible. Very few human beings had ever seen more than random snippets of what lies between the surface of the ocean and its floor. Typically finely wrought ocean maps have been the result of extensive sonar.
The scripps sea floor map has also been used to discover a new microplate in the indian ocean. This graphic shows several ocean floor features on a scale from 0 35 000 feet below sea level. In every previous ocean map before 3d cartography we had seen primarily the ocean s surface. The data is from four companion digital models of the age age uncertainty spreading rates and spreading asymmetries of the world s ocean basins.
For that geologists date and study continental crust. The data are described in a data and analysis note in the journal of geophysical research 1997 entitled digital isochrons of the world s ocean floor. This is expensive and time consuming so sonar maps are mostly only made of places where ships spend the most time.
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