TheHimalayan-Tibetanorogenistheyoungestandarguablymostspectacularofallthecontinent-continentcollisionalbeltsontheEarth.Therearenotonlynorth-southextrusionsbutalsoeast-westextensionsintheTibetanPlateau.AllthesephenomenaaretheresultsoftheIndianplatesubductingintotheEurasiaplateabout70Maago