allochthonous

al loch tho nous |əˈläkTHənəs əˈlɑkθənəs | ▶adjective Geology denoting sediment or rock that originated at a distance from its present position. Often contrasted with autochthonous. ORIGIN early 20th cent.: from allo- ‘other ’ + Greek khthōn ‘earth ’ + -ous .

allochthonous

allochthonous |əˈlɒkθənəs | ▶adjective Geology denoting a deposit or formation that originated at a distance from its present position. Often contrasted with autochthonous. ORIGIN early 20th cent.: from allo- ‘other ’ + Greek khthōn ‘earth ’ + -ous .