Sedimentary, like sand.
Weathering and erosion make large rocks smaller.
The Andes in western South America is an example of a landform that arises from the movement of the tectonic plates.
The Andes mountain range is the mountain range that runs along South America's whole Pacific Ocean coast in the west. It is the world's longest continental mountain range, stretching 8500 km.
It was created by the convergence of the South American and Nazca plates towards the end of the Late Cretaceous, at the end of the Mesozoic era. In the relief configuration, seismic movements and consequent volcanic activity have been more significant than external erosive processes.
There are high mountain ranges in the existing morphology, as well as broad high plateaus, deep longitudinal valleys, and vast mountain ranges. Except for in the Argentine-Chilean Andes, transversal valleys are uncommon.
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The modern convention of the Europe-Asia boundary (from south to north) follows the Aegean Sea<span>, the Dardanelles-Sea of Marmora-Bosporus, the </span>Black Sea<span>, along the watershed of the Greater Caucasus, the northwestern portion of the </span>Caspian Sea<span> and along the </span>Ural River<span> and </span><span>Ural Mountains
So I believe your answer would be the Aegean sea, Dardanelles sea, and the black sea.</span>
