تعريف caledonian orogenic belt في الإنجليزية الإنجليزية القاموس.
Range of mountains in northwestern Europe, extending in a southwest-northeast direction from Ireland, Wales, and northern England through Norway. The mountains developed in the period from the start of the Cambrian Period (543 million years ago) to the end of the Silurian Period ( 417 million years ago). Remnants also exist in eastern Greenland