Middle Jurassic


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Middle Jurassic

[′mid·əl jə′ras·ik]
(geology)
The geologic epoch occurring between the Upper and Lower Jurassic, beginning approximately 170,000,000 years ago.
References in periodicals archive ?
The Samana Suk Formation of the Middle Jurassic age from the Khairabad section, western Salt Range, Pakistan has been studied to elaborate its microfacies and diagenetic setting after the collection of 52samples from 35m thick succession.
(2013) also noted the presence of slender humeri in the non-neosauropod Lapparentosaurus from the Middle Jurassic of Madagascar.
And the Triassic is dis-conformably over-lain by the Lower and Middle Jurassic.
Washington, Feb 7 ( ANI ): In the middle Jurassic, some 165 million years ago, many animals, such as amphibians and other arthropods, apparently sang love songs to attract mating partners, according to scientists.
The exploration well could not penetrate the main Chalk target or the underlying Middle Jurassic secondary target so it is now being sidetracked to a new location to retry to do that, PA Resources said.
Located in Middle Jurassic rocks, the Harepus discovery well has been drilled in 247m of water to a total depth of 3,162m.
Five wells drilled within the block yielded flows from the main gas reservoirs in the Lower and Middle Jurassic clastics and Paleozoic carbonates at depths of 2,200-3,700 metres.
James Clark and James Hopson of the University of Chicago discovered the skull of what they call a new species, Bocatherium mexicanum (named after the La Boca rock formation where it was found), which they believe dates to the middle Jurassic, roughly 180 million years ago.
On May 31 OMV and partners DNO, Equinor and Spirit Energy spudded appraisal well 6506/11-11 S with the Deepsea Bergen targeting the Middle Jurassic and Lower Cretaceous Iris and Hades discovery made in 2018 with well 6506/11-10 S.
The primary and secondary exploration targets for the well were to prove petroleum in reservoir rocks in the Permian and Middle Jurassic (the Rotliegende group and the Vestland group, respectively).
Rock units in the Sumari_Ol well ranges from the Middle Jurassic to Early Eocene that includes Panoba, Patala, Hangu, Kawagarh, Lumshiwal, Chichali, and Samana Suk Formation from top to bottom.In Sumari-01 Samana Suk, Lumshiwal, Kawagarh and Hangu Formations were selected for detail Petrophysical analysis using the cut off factors.
The fossil, which was preserved nearly intact, is considered a scientific prize because of the era in which it lived, the Middle Jurassic.