eàov PzÅwZ (Bogra Fault)  ˆ`Gki cwøgvçjxq A¯¦ixc ˆmvcvGb (western foreland shelf) AewÕ©Z ‰KwU f„-MvVwbK i…cGiLv (structural framework), hv f„Zvwî½K wewf®² mgGq mwò×q wQj| ‰wU PzÅwZi cybivq mwò×q nIqvi Ici msj™² ‰jvKvq wKQy wbw`ÆÓ¡ f„Zvwî½K cwiGeGki wò×qvkxj nIqv wbfÆi KGi| eàov PzÅwZ eivei wePjb (movement) eàov MÉÕ¦ DcZÅKvq (Bogra graben) cyi‚ cvjwjK wkjvi AeGÞc ŠZwi KGiwQj| bexb gvGqvwmb Õ¦iò×g eàov- x1 K„Gc cvIqv ˆMGQ| K„cwU eàov PzÅwZ eivei Lbb Kiv nGqwQj| ‰wU KzPgv-x1 K„c ˆ^GK MvVwbKfvGe 122 wgUvi DuPzGZ (structurally higher) AewÕ©Z| wK¯§ KzPgvGZ cÉvµ¦ 183 wgUvi cyi‚ bexb gvGqvwmb Õ¦iò×Ggi wbÁ²vsk eàovq cvIqv hvq bv|

eàov-x1 ‰es KzPgv-x1 K„cmgƒGni bgybvi f„KÁ·bxq (seismic) I RxevÕà զiwe`Åv (biostratigraphy) MGelYvq ˆ`Lv ˆMGQ ˆh, cÅvwjIwRb I wbIwRb f„Zvwî½K mgGq eàov PzÅwZ mwò×q wQj| dGj Ea»ÆNvZ Ask AGcÞv eàov MÉÕ¦ DcZÅKvq A^Ævr wbÁ²NvZ AsGk (down thrusted block) wmGjU Pzbvcv^i ˆewk mwçZ nGqwQj| ‰wU PzÅwZ eivei Lvov wePjb ‰es wmGjU Pzbvcv^i mçqGbi mgq eàov MÉÕ¦ DcZÅKv eivei f„Aebgb (subsidence) wbG`Æk KGi| gaÅ I bexb gvGqvwmb mgGq eàov PzÅwZ ˆh mwò×q wQj Zvi cÉgvY nGjv bexb gvGqvwmb AeGÞGci eàov MÉÕ¦ DcZÅKvq DîGivîi cyi‚Z½ e†w«¬| nvBGWÈvKveÆb Drcv`Gbi RbÅ eàov PzÅwZ eÅeÕ©vi DœPZi mywÕ©Z ˆmvcvb (upper stable shelf) Açj AcwicØ (immature), AbÅw`GK eàov PzÅwZ eÅeÕ©vi `wÞGY AewÕ©Z wbÁ²Zi mywÕ©Z ˆmvcvb (lower stable shelf) AçGj AGbKàwj nvBGWÈvKveÆGbi RbÅ mÁ¿vebvcƒYÆ cixwÞZ ‰jvKv (play) iGqGQ| eàov PzÅwZi `wÞGY AewÕ©Z AaÆMÉÕ¦ DcZÅKvq (half graben) Uviwkqvwi AeGÞGc mvgvbÅ Kqjv cvIqv hvq| 

[wmdvZzj KvG`i ˆPŒayix]