Ocean Floor Age Model

Dec 4 2015 explore r naah s board ocean floor followed by 336 people on pinterest.

Ocean floor age model.

This graphic shows several ocean floor features on a scale from 0 35 000 feet below sea level. This dataset shows the age of the ocean floor along with the labeled tectonic plates and boundaries. Rather than height of the ocean floor above a base or reference level the depth of the ocean is of interest. Contours of 20 million years are available as a layer that is currently set to invisible.

Therefore seafloor dating isn t that useful for studying plate motions beyond the cretaceous. The simple cooling model predicts a linear relation between depth and t 1 2 and heat flow and 1 t 1 2 where t is the age of the ocean floor. At the bottom the ocean floor features tall mountains expansive plains and deep trenches. The simple cooling model predicts a linear relation between depth and t and heat flow and 1 t where t is the age of the ocean floor.

The data is from four companion digital models of the age age uncertainty spreading rates and spreading asymmetries of the world s ocean basins. Two models a simple cooling model and the plate model have been advanced to account for the variation in depth and heat flow with increasing age of the ocean floor. The survey data was used to create three dimensional relief maps of the ocean floor and by 1953 american oceanic cartographer marie tharp had created the first of several maps that revealed the presence of an underwater mountain range. See more ideas about ocean projects science projects ocean.

Shortly after the conclusion of world war ii sonar equipped vessels crisscrossed the oceans collecting ocean depth profiles of the seafloor beneath them. Because of this correlation between age and subduction potential very little ocean floor is older than 125 million years and almost none of it is older than 200 million years. Most of these features remained unknown to bathymetrists scientists who study the form of the ocean floor until the advent of sonar and satellites. For that geologists date and study continental crust.

Creating a model. The following features are shown at example depths to scale though each feature has a considerable range at which it may occur. We show that the same t sup 1 2 sup dependence is implicit in the solutions for. Two models a simple cooling model and the plate model have been advanced to account for the variation in depth and heat flow with increasing age of the ocean floor.

Feb 13 2013 oceans cover over 70 percent of the earth s surface.