▁to ▁be ▁part ▁of ▁G ond w ana . ▁ ▁The ▁C ath ays ia ▁F old ▁B elt ▁is ▁attached ▁to ▁the ▁S out he astern ▁side ▁of ▁the ▁C rat on . ▁ ▁Tar im ▁Block ▁ ▁The ▁Tar im ▁Block ▁in ▁North ▁West ▁China ▁( X in ji ang ) ▁is ▁a ▁relatively ▁thin ▁zone ▁of ▁P rec amb rian ▁rock ▁and ▁Ne opro ter oz o ic ▁to ▁Camb rian ▁cover ▁sequence ▁that ▁may ▁be ▁related ▁to ▁the ▁South ▁China ▁C rat on . ▁The ▁P rec amb rian ▁units , ▁like ▁the ▁South ▁China ▁C rat on , ▁also ▁finished ▁forming ▁ 0 . 8 ▁billion ▁years ▁ago . ▁The ▁Tar im ▁Block ▁can ▁be ▁divided ▁into ▁three ▁parts ▁the ▁North ▁Tar im , ▁South ▁Tar im ▁and ▁Central ▁Tar im ▁ter rane . ▁Between ▁ 2 . 8 0 ▁and ▁ 2 . 5 7 ▁billion ▁years ▁ago ▁the ▁Tar im ▁Block ▁was ▁intr ud ed ▁by ▁gran ites . ▁During ▁the ▁formation ▁of ▁the ▁Columbia ▁and ▁Rod in ia ▁super cont in ents ▁the ▁block ▁experienced ▁t ect ono - met am orph ic ▁events ▁between ▁ 2 . 0 – 1 . 8 ▁and ▁ 1 . 0 – 0 . 9 ▁b ull ion ▁years ▁ago ▁respectively . ▁ ▁From ▁ 7 6 0 ▁million ▁years ▁ago ▁the ▁Tar im ▁Block ▁began ▁to ▁split ▁from ▁Rod in ia ▁leading ▁to ▁ igne ous ▁activity . ▁Following ▁this ▁a ▁series ▁of ▁ter ran es ▁were