An orogen is a belt of the lithosphere shortened and thickened by the convergence of two plates, together with the rocks deformed and metamorphosed in it; the mountain range is its surface expression, the thickened crust beneath is its root.
বইগুলো এখনো বাংলা ভাষায় পাওয়া যায় না — ইংরেজি সংস্করণ দেখানো হচ্ছে।
Earth and Space Sciences · পরিভাষা