Nkọwa: Mgbasawanye sara mbara nke Permo-Carboniferous glacial sediments na South America, Africa, Madagascar, Arabia, India, Antarctica na Australia bụ otu n'ime ihe akaebe kachasị maka echiche nke mbugharị nke kọntinent. Ịga n'ihu nke glaciers, nke a na-adabere na ntụgharị ihu igwe na nkwụnye ego a na-akpọ tillites, na-atụ aro ịdị adị nke supercontinent nke Gondwana, nke ghọrọ ihe dị mkpa nke echiche nke mbugharị nke kọntinent. Striations gosiri mbugharị nke ice site na equator na n'akụkụ osisi, dabere na ọnọdụ na ntụgharị nke kọntinent ugbu a, ma kwado echiche ahụ na kọntinent ndịda dịbu na ebe dị iche iche dị iche iche nke dị n'akụkụ ibe ha. Ajụjụ: Kedu ihe mere ndị nchọpụta ji mara na echiche nke mbugharị nke kọntinent nwere ike ịbụ eziokwu?
nkesa sara mbara nke Permo-Carboniferous glacial sediments