Oceanic Crust

the upper part of the oceanic lithosphere down to the MOHOROVICIC DISCONTINUITY. It is formed of several layers commencing with a top layer of sediment which may be thin or absent (as over oceanic ridges). However, near to continental shelves, sediment may accumulate in thicknesses up to 2 or 3 kilometres. Beneath this is a layer of LAVAS (basaltic) and dykes which together are about 2 km thick. The next layer is approximately 5 km (3 miles) thick and its composition is similar to that of gabbro, a coarse-grained basic igneous rock. The base of this layer approaches the MANTLE in composition. These layers seem to remain remarkably constant between ocean basins.

Taken from Dictionary of Science

Kame

a structure produced by glacial deposition. It occurs as a mound of sands and gravels, with bedding (that is, it is arranged in layers) and often slumping at the sides. It was formed by the melting of stagnant ice which as a result dropped its load of sediment.

Taken from Dictionary of Science

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A kame is a geological feature, an irregularly shaped hill or mound composed of sand, gravel and till that accumulates in a depression on a retreating glacier, and is then deposited on the land surface with further melting of the glacier. Kames are often associated with kettles, and this is referred to as kame and kettle topography.

Taken from Wikipedia