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 ?
According to the company, the main objectives of the well were to test the reservoir properties and hydrocarbon potential of the Upper Jurassic Hekkingen formation and Middle Jurassic StAaAaAeA formatio
The Silver Star property is underlain by Cretaceous Kasalka group andesitic volcanics and Middle Jurassic Bowser Lake group clastic sediments.
Skye now has a worldfamous reputation for extremely rare fossils from the Middle Jurassic period, which was around 163 to 174 million years ago.
But the latest discovery, together with re-analysis of other fossil evidence, suggests the group arose millions of years earlier, in the Middle Jurassic spell.
Razanandrongobe sakalavae is the largest terrestrial carnivore from this Middle Jurassic terrestrial ecosystem and was perhaps one of the top predators in Madagascar at the time.
Many fossils at Pu'an belong to the middle Jurassic period and dinosaur fossils from that time are scarce worldwide, it added.
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.
In order to contribute to correct such deficiency, we undertook a detailed study of the Rio Numi area, vicinity of Tlaxiaco, where the Middle Jurassic units that make up the Tecocoyunca Group display their attributes, thus allowing to supplement the formational descriptions.
Investigations performed along the Middle Jurassic Alpine Tethyan unconformity surface of E Sardinia evidenced an elaborate surface that developed over older Late Paleozoic to Triassic rocks.
Five wells drilled within the block yielded flows from the main gas reservoirs in Lower and Middle Jurassic clastics and Paleozoic carbonates at depths of 2,200-3,700 metres.
Editors Anderson, Didenko, Johnson, khanchuk, and MacDonald present readers with a collection of academic and expert contributions on the geological relationships and settings at the margin of the Laurasia plate from the Middle Jurassic period to the Early Cretaceous period.
While performing testing, the exploration well at the new area adjacent to the producing Akkuduk field flowed at a rate of up to 18 cubic meters per day (110 barrels per day), and, as a result, the new deposit in Middle Jurassic horizons was discovered.