ub ▁grows ▁to ▁a ▁height ▁of ▁ 0 . 5 ▁to ▁ 2 ▁m . ▁ ▁It ▁grows ▁small ▁white ▁flowers ▁in ▁clusters . ▁ ▁It ▁is ▁very ▁similar ▁to ▁D aph ne ▁long il ob ata ▁in ▁appearance . ▁It ▁is ▁found ▁at ▁alt itudes ▁r anging ▁from ▁ 1 4 0 0 ▁to ▁ 3 0 0 0 ▁m . ▁ ▁References ▁ ▁ac util oba <0x0A> </s> ▁Ut si ra ▁High ▁is ▁a ▁bas ement ▁high ▁and ▁hor st ▁in ▁the ▁south west ▁of ▁the ▁Norwegian ▁contin ental ▁sh elf . ▁It ▁lies ▁east ▁of ▁the ▁Vik ing ▁Gra ben ▁and ▁west ▁of ▁the ▁St ord ▁and ▁E gers und ▁bas ins ▁ 1 9 0   km ▁west ▁of ▁St av anger . ▁It ▁was ▁on ▁the ▁Bal der ▁oil ▁field ▁at ▁the ▁fl ank ▁of ▁the ▁Ut si ra ▁High ▁that ▁oil ▁was ▁first ▁discovered ▁in ▁Norway ▁in ▁ 1 9 6 7 . ▁ ▁The ▁bas ement ▁is ▁of ▁Ut si ra ▁High ▁is ▁composed ▁of ▁gran ite ▁that ▁formed ▁in ▁Ord ov ician ▁times . ▁Part s ▁of ▁these ▁gran ites ▁contain ▁sap rol ite ▁and ▁sap rock ▁that ▁formed ▁from ▁weather ing ▁above ▁sea ▁level ▁during ▁the ▁Early ▁Mes oz o ic . ▁before ▁they ▁became ▁buried ▁in ▁Late ▁Jur ass ic ▁and ▁Early ▁C ret ace ous - aged ▁sand stone . ▁These ▁weather ed ▁rocks ▁may ▁be ▁un con vent ional ▁pet role um ▁res er voir s . ▁ ▁The ▁str and