Concept information
اصطلاح مرجح
کراتون/بستر پایدار زمین
نوع
-
http://www.irandoc.ac.ir/onto/irandoc-meta/Concept
مفهوم اعم
اصطلاحهای نامرجح
- پوسته پایا
یادداشت دامنه
- بخشی از پوستۀ زمین که به پایداری رسیده و در دورهای طولانی تنها دچار دگرشکلی اندکی شده است
تعاریف
- A craton is an old and stable part of the continental crust that has survived the merging and splitting of continents and supercontinents for at least 500 million years. Some are over two billion years old. Cratons are generally found in the interiors of continents and are characteristically composed of ancient crystalline basement crust of lightweight felsic igneous rock such as granite. They have a thick crust and deep roots that extend into the mantle beneath to depths of 200 km. [Wikipedia]
منسوخ
- false
در زبان های دیگر
-
-
English
URI
http://www.irandoc.acir/onto/irandoc/SWEETT07782
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