Results 111 to 120 of about 181,488 (327)
Shiyou shiyan dizhiA pyrolysis hydrocarbon generation experiment was conducted on low-maturity marine shale from the Second White Specks (2WS) Formation of the Cretaceous Colorado Group in the Western Canada Basin.
Zhushi GE +4 more
doaj +1 more source
Endogenous versus Exogenous Origins of Crises [PDF]
in the monograph entitled ``Extreme Events in Nature and
Society,'' Series: The Frontiers Collection, S. Albeverio, V. Jentsch and H.
Kantz, eds. (Springer, Heidelberg, 2005), 2004 Are large biological extinctions such as the Cretaceous/Tertiary KT boundary due to a meteorite, extreme volcanic activity or self-organized critical extinction cascades? Are commercial successes due to a progressive reputation cascade or the result of a well orchestrated advertisement?
arxiv
Deep Underground Science and Engineering, EarlyView.The present study uses the Modified Mohr‐Coulomb true‐triaxial failure criterion (MMC_TT), which predicts the strength of rock better than the MGC criterion in laboratory true‐triaxial tests to overcome the limitations. Moreover, based on the data from previously published five vertical wells in the Krishna‐Godavari basin (K‐G basin), an empirical ...
Ravindra K. Burnwal, Aditya Singh
wiley +1 more source
Fossilization in Geopark Araripe studied through X-ray diffraction, scanning microscopy and thermogravimetric analysis [PDF]
arXiv, 2008 The Geopark Araripe, located in Northeastern Brazil, is the first UNESCO Natural Park in the South hemisphere and a world-famous fossil deposit of the Early Cretaceous period (approximately 120 million years). Fossilized fish fauna in Geopark Araripe is found inside of sedimentary rocks in three-dimensional forms. In the present study sedimentary rocks
arxiv
Energy Science &Engineering, EarlyView.ABSTRACT To evaluate the hydrocarbon generation characteristics and geological significance of deep‐source rocks in the Gulong Sag of the Songliao Basin and to identify the next exploration targets in the study area, this study focuses on the organic‐rich mudstones and shales from the deep formations of the Gulong Sag.
Bo Hu +6 more
wiley +1 more source
A Geothermal Well Doublet for Research and Heat Supply of the TU Delft Campus [PDF]
arXiv, 2020 A geothermal well doublet, designed for two primary aims of research and commercial heat supply, is planned to be constructed on the campus of Delft University of Technology. The plans include a comprehensive research programme, including installation of a wide range of instruments alongside a comprehensive logging and coring programme and an extensive
arxiv
The oldest record of ornithuromorpha from the early cretaceous of China
Nature Communications, 2015 Ornithuromorpha is the most inclusive clade containing extant birds but not the Mesozoic Enantiornithes. The early evolutionary history of this avian clade has been advanced with recent discoveries from Cretaceous deposits, indicating that ...
Min Wang +7 more
semanticscholar +1 more source
Energy Science &Engineering, EarlyView.ABSTRACT The Pabdeh Formation (Paleocene‐Oligocene) is one of the hydrocarbon‐generating formations in the Zagros sedimentary basin. In this study, to evaluate its hydrocarbon potential and the distribution of organic matter maturity, samples were collected from oil fields in southwestern Iran and the Dezful embayment and analyzed geochemically.
Yingchun Liu +3 more
wiley +1 more source
Towards angiosperms genome evolution in time [PDF]
arXiv, 2013 In this communication, direction of evolutionary variability of parameters of genome size and structurally functional activity of plants in angiosperm taxa among life forms, are analysed. It is shown that, in the Cretaceous-Cenozoic era, the nuclear genome of the plants tended to increase.
arxiv
The cause of Late Cretaceous cooling: A multimodel-proxy comparison
, 2016 Proxy temperature reconstructions indicate a dramatic cooling from the Cenomanian to Maastrichtian. However, the spatial extent of and mechanisms responsible for this cooling remain uncertain, given simultaneous climatic influences of tectonic and ...
C. Tabor +8 more
semanticscholar +1 more source