▁ 1 - R JS - 2 9 7 ▁in ▁ 1 9 8 4 ▁and ▁discovered ▁oil . ▁ ▁The ▁strat ig raph y ▁of ▁the ▁Cam pos ▁Bas in ▁starts ▁with ▁the ▁Lower ▁C ret ace ous ▁L ago ▁Fe ia ▁Form ation ▁a ▁source ▁rock , ▁followed ▁by ▁the ▁Alb ian ▁Mac ae ▁Form ation ▁ ▁consisting ▁of ▁shall ow ▁water ▁carbon ates ▁over lain ▁by ▁late ▁Alb ian ▁sh ales , ▁mar ls , ▁cal cil ut ites , ▁and ▁tur bid ite ▁sand st ones . ▁ ▁From ▁this ▁formation ▁through ▁most ▁of ▁the ▁C en oz o ic , ▁the ▁Cam pos ▁Form ation ▁was ▁depos ited , ▁consisting ▁of ▁deep ▁water ▁tur bid it ic ▁sand st ones ▁and ▁sh ales , ▁the ▁main ▁produ cers ▁in ▁the ▁Alb ac ora ▁and ▁Mar lim ▁fields . ▁ ▁Finally , ▁the ▁bas in ▁was ▁filled ▁by ▁the ▁U bat uba ▁Form ation , ▁consisting ▁of ▁slope ▁and ▁sh elf ▁depos its . ▁ ▁References ▁▁ ▁Category : O il ▁fields ▁of ▁Brazil ▁Category : Cam pos ▁Bas in ▁Category : P etro bras ▁oil ▁and ▁gas ▁fields <0x0A> </s> ▁Hem av ath i ▁( K ann ada : ▁ <0xE0> <0xB2> <0xB9> <0xE0> <0xB3> <0x87> <0xE0> <0xB2> <0xAE> <0xE0> <0xB2> <0xBE> <0xE0> <0xB2> <0xB5> <0xE0> <0xB2> <0xA4> <0xE0> <0xB2> <0xBF> ) ▁is ▁a ▁ 1 9 7 7 ▁Indian ▁K ann ada ▁film , ▁directed ▁by ▁S idd aling a iah ▁and ▁produced ▁by ▁N . ▁Ve