Lower Jurassic

Lower Jurassic

[′lō·ər ju̇′ras·ik]
(geology)
The earliest epoch of the Jurassic period of geologic time, extending from about 185- to 170,000,000 years ago.
References in classic literature ?
The thing must have been sixteen or eighteen feet in length and closely resembled pictures I had seen of restored plesiosaurs of the lower Jurassic.
It has a deeper Minagish Oolite Fm producing heavy oil, and a Lower Jurassic Marrat Fm with large reserves of light oil.
This fact is a quite common feature as indicated by several works concerning the Lower Jurassic of the Cleveland Basin in the UK (van Buchem et al.
The well encountered 102 metres of gross oil-bearing reservoir in Middle and Lower Jurassic sandstones of the Ile and 157 metres of a gross gas condensate-bearing column in Lower Jurassic sandstones in the Tilje formation.
Allkaruen, from the middle lower Jurassic limit, shows an intermediate state in the brain evolution of pterosaurs and their adaptations in the aerial environment," Deigo Pol, study researcher and Museo PaleontolAaAaAeA gi Egidio Feruglio in Argentina, said in a statement released by (http://www.
In February 2016, USGS (US Geological Survey) released a report titled "Upper Cretaceous and Lower Jurassic Strata in Shallow Cores on the Chukchi Shelf, Arctic Alaska.
A Lower Jurassic Miospore Assemblage from the Variegated Shale, Nammal Gorge, Salt Range (West Pakistan).
Discovery of the Lower Jurassic Marrat limestone in the western region in 1984 confirmed the theory, although initially KOC identified it "as a big Fm south of Magwa" in Greater Burgan.
The Lower Jurassic is the first geological epoch in the Jurassic that began 201.
Sedimentology and paleontology of the Lower Jurassic Scots Bay Formation, Bay of Fundy, Nova Scotia, Canada.
Therefore, the theoretical value of the height of the natural arch after the excavation of lower Jurassic coal stratum can be calculated by Equation 3 as 121m, which exceeds the spacing of close distance coal strata.
Earlier described taxa by Emerson and Troxell are from the Lower Jurassic Portland Formation (Hettangian-Sinemurian; 6) somewhere near Wilbraham, Hampden County, Massachusetts.