Upper Jurassic

Upper Jurassic

[′əp·ər ju̇′ras·ik]
(geology)
The latest epoch of the Jurassic period of geologic time, beginning approximately 155 million years ago.
References in periodicals archive ?
Oil and gas have been found in the Tarbert formation in the upper Brent group structure, while gas has been also proven in Upper Jurassic reservoir rocks belonging to the Heather formation.
The uranium mineralization is located in the Salt Wash member of the Morrison formation in the upper Jurassic.
The recent major discoveries in the Flemish Pass basin, offshore eastern Canada, have re-focussed industry attention on the Upper Jurassic, particularly in South Porcupine, while along the basin margins the exciting potential in the Lower Cretaceous, prolific in West Africa, also remains undrilled.
Its pay zones are: Lower Cretaceous (Thamama I & II), Upper Jurassic (Arab A-C & D carbonates) and Mid-Jurassic (Upper Araej, Uwainat & Lower Ara'ej limestones).
The Upper Jurassic (Kimmeridgian) Lastres Formation contains many vertebrate tracksites with a large variety of taxa.
The well, 22/11b-13, will target an Upper Jurassic Fulmar sand prospect.
The Carbon #1 appraisal well, located about five miles northwest of the Spark #1A discovery well, encountered an Upper Jurassic reservoir.
The Arbuzovskoye well A-214 was spudded on 22 April 2016 and has been successfully completed with a horizontal segment of about 1,000 m in the Upper Jurassic J1-1 and J1-2 intervals at a depth of approximately -2,457 to -2,467 m TVDSS.
Near the close of the Upper Jurassic, shallow water cyclic sedimentation was re-established with the deposition of the carbonates and evaporites of the Arab and succeeding Hith Fms.
The diversity, abundance and good conditions of preservation in the quarry are not usual from the Portuguese Upper Jurassic and are, somehow, in the line with the classical Guimarota coalmine, in Leiria (Martin and Krebs, 2000).
The West Franklin well has encountered a very good quality Upper Jurassic reservoir and was tested with a rate of 985,000 standard cubic metres per day of gas and 314 standard cubic metres per day of condensates on a 26/64' choke.