The first broad program of scientific shallow drilling on the U.S. Atlantic continental shelf has delineated rocks of Pleistocene to Late Cretaceous age, including phosphoritic Miocene strata, widespread Eocene carbonate deposits that serve as reflective seismic markers, and several regional unconformities. Two sites, off Maryland and New Jersey, showed light hydrocarbon gases having affinity t...

Black shale is dark-colored, organic-rich sediment, and there have been many episodes of black shale deposition over the history of the Earth. Black shales are source rocks for petroleum and natural gas, and thus are both geologically and economically important. Here, we review our recent progress in understanding of the surface ocean ecosystem during periods of carbonaceous sediment deposition...

Based on a review of troodontid specimens from the territories of the former Soviet Union, including new discoveries from Uzbekistan, two dental morphotypes can be distinguished among Troodontidae from the Cretaceous of Asia: (1) unserrated teeth, present in Mei from Lujiatun (China; Early Cretaceous: Hauterivian-Barremian), an unnamed taxon from Hövöör (Mongolia; Early Cretaceous: Aptian-Albia...

This study applied the Pearson correlation coefficient and principal component analysis as tools for unsupervised qualitative petroleum system evaluation techniques. A total of 252 oil samples (32 features per sample) representative two Brazilian sedimentary basins (Recôncavo Potiguar) were used to classify them according their respective degrees maturation origin. The large initial set variabl...

Biological markers are organic compounds in geological samples with an unambiguous link to specific precursor molecules in living organisms. They provide information on the origin and depositional environment of fossil organic matter as well as about its thermal maturation caused by geothermal heat flow during burial. Petroleum and its refinery products carry this biomarker information into the...

This paper addresses potential application of data on stable carbon and oxygen isotope composition carbonates for study organic rich source rocks the example Late Jurassic–Early Cretaceous Bazhenov Formation (West Siberian petroleum basin, Russia). Geochemical studies were conducted sections located in central (most productive) peripheral (northern southern) regions distribution area, containin...

petroleum upstream service contracts possess different aspects of legal, contractual, fiscal, economic, technical and environmental nature. in this research, efforts have been made to review one of the aspects of the petroleum upstream contracts which have been far too little considered, namely the fiscal system of upstream service contracts. since every service contract possesses its own indep...

[1] In the Shiquanhe area of far-western Tibet, midCretaceous strata lie unconformable on ophiolitic melange and Jurassic flysch associated with the Bangong-Nujiang suture zone. On the basis of our mapping and geochronologic studies, we suggest that these Cretaceous strata were shortened by >57% over a north south distance of 50 km during Late Cretaceousearly Tertiary time. The Late Cretaceous ...

Petroleum ether extract of Caesalpinia bonduc L. (Roxb) seeds (Family: Caesalpiniaceae) was evaluated for its anti-inflammatory activity in rats. Wistar rats (120-150 g) of either sex were pretreated with petroleum ether extract of seed kernel of C. bonduc. Inflammation was induced in rat paw by injecting 0.1 ml of carrageenan (1% w/v) in subplantar region of right hind paw. Inflammation induce...