A period of intensive global erosion doesn't seem sufficient to fully explain the pattern of change in the rock.
Obe zuru oke nke ihe ngosi SMA buru ibu n'ebe ndịda nwere ike ọ gaghị enweta n'oge na-adịghị anya iji nwee ike ịkọwa nloghachi zuru oke nke omume ịda mba na akụ na ụba crypto.