Middle Cretaceous


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Related to Middle Cretaceous: Middle Cambrian, Middle Jurassic, Middle Triassic

Middle Cretaceous

[′mid·əl krə′tā·shəs]
(geology)
The geologic epoch between the Upper and Lower Cretaceous, beginning approximately 120,000,000 years ago.
References in periodicals archive ?
2A-E) from the middle Cretaceous (Cenomanian) Woodbine Formation at the Arlington Archosaur Site, northeastern Tarrant County, Texas, and one SMU specimen from Woodbine exposures in the Lake Grapevine spillway (Fig.
Additional production is possible from the Upper Cretaceous Shiranish limestone (27[degrees] API oil) and the Middle Cretaceous Qamchuqa limestone.
Middle Cretaceous deposition closed with some up-lift and renewed subsidence resulting in the deposition of the Late Cretaceous Aruma Group.
It has produced from the Middle Cretaceous Wara and Nahr Umr sandstones, mostly 31.
MPC), has produced since 1955 from Cretaceous carbonates: the fractured Shiranish marly limestone of the Maestrichtian/ Campanian (Upper Cretaceous) age where 32[degrees] API, 3% sulphur oil has been depleting; and the Middle Cretaceous Qamchuqa Fm (29[degrees] API oil, 2.
It also has oil accumulations in an Upper Cretaceous fractured Shiranish limestone and a Middle Cretaceous Qamchuqa limestone.
But its Middle Cretaceous Fm was beginning an irreversible decline.
AOC) of Japan, is a 10x7 km field containing sour oil and over 35 TCF of non-associated gas from a Middle Cretaceous formation.
In 1984, KOC found South Magwa, another part of Greater Burgan, in a Middle Cretaceous Fm producing 36-40o API oil.
It also has accumulations in an Upper Cretaceous fractured Shiranish limestone and a Middle Cretaceous Qamchuqa limestone.
Many of the fields along this belt, known as the Hakkari Basin, are producing from Upper and Middle Cretaceous reservoirs.
oil coming from Lower Cretaceous Zubair sands and heavier oils from the Mishrif Fm of the Middle Cretaceous.