And one of the things he had observed is that if you look at mountains like the Appalachians, you often find that the rocks in them are folded, and they're folded in a particular way, which suggested to him that they were actually being compressed from the side.
و يكی از چيزهايی كه مشاهده كرد اين بود كه اگر به كوههای نظير آپالاچيان نگاه كنيد، اغلب می توانيد صخره هايی ببينيد كه چين خورده اند و درجهت خاصی تا خورده اند كه برای او به مفهوم از کناره تحت فشار بودنشان بود.