I-Wuhan ninestones x6 / x7 / x8 uthotho.

I-X6 / X7 ye-PDC ephezulu kakhulu ye-PDC ngoxinzelelo lwe-7.5-8.0gpa.
Ukuvavanywa kokunxiba (uvavanyo oluqhelekileyo) luyi-11.8km okanye ngaphezulu. Banokunxiba kakhulu kakhulu kwaye banobunzima bempembelelo, balungele ukuqhuba ngendlela eyahlukileyo ephakathi-kunzima ukuya kwi-roughtz sandstone, i-limestone, kunye namatye aphezulu. Uchungechunge lwe-X6 lubonakaliswa kukugcinwa okuphezulu kunye nesantya esiphezulu sokumba.
I-X8 i-X8 ye-PDC ephezulu kakhulu ye-PDC enoxinzelelo lwe-8.0-8.5gpa
Ukuvavanywa kokunxiba (uvavanyo oluyi-granite) luyi-13.1km okanye ngaphezulu. Ngokusekwe kubunyani bempembelelo ephezulu, inxibe kakhulu ukuxhathisa kwaye ilungele ukuqhuba ngeendlela ezahlukeneyo, ngakumbi kwiindlela ezintsonkothileyo ezingenamsebenzi ophakathi kwabahlali.