Bituminous sands

Merkwiller-Pechelbronn () is a commune in the Bas-Rhin department in Grand Est in north-eastern France.

sands naturally soaked with petroleum

oilfield in Venezuela

Bemolanga is a large oil sands deposit in the onshore Morondava Basin of Madagascar. The deposit was discovered in the early 1900s but was known to locals for centuries. The field is located north of the Tsimiroro heavy oil field and east of the town of Morafenobe. The field is at depth and about from the coast.