Results 71 to 80 of about 9,383,845 (204)

Going silent? Evidence for independent losses of acoustic communication in tree crickets (Insecta, Orthoptera, Grylloidea, Oecanthidae)

Journal of Systematics and Evolution, EarlyView.
Our ancestral state reconstruction in tree crickets reveals multiple independent and irreversible losses of sound‐producing and ‐receiving structures, supporting the convergent evolution of the silent phenotype. We demonstrate strong evolutionary integration between forewings and tympana, although the discovery of ‘silent listeners′ and ‘deaf singers ...
Lucas Denadai de Campos, Jorge Alves Audino, Silvio Shigueo Nihei, Laure Desutter‐Grandcolas   +3 more
wiley   +1 more source

Early development of anoxia prior to the main euxinic phase of the Jenkyns Event on the margin of the Western Tethys (Sachrang Basin, Eastern Alps)

Sedimentology, EarlyView.
ABSTRACT Although the global expansion of oxygen‐depleted marine environments during the Early Toarcian Jenkyns Event (or Toarcian Oceanic Anoxic Event) is primarily inferred from successions in the NW European epicontinental basins, the timing of the expansion of anoxia in Tethyan basins, where hydrography potentially played a minor role, is poorly ...
Tamás Müller, Stefan Neumeister, Jan Schlögl, Emanuela Mattioli, Hans‐Jürgen Gawlick, Thomas J. Algeo, Adam Tomašových   +6 more
wiley   +1 more source

New specimens of the basal ornithischian dinosaur Lesothosaurus diagnosticus Galton, 1978 from the Early Jurassic of South Africa [PDF]

, 2016
We describe new specimens of the basal ornithischian dinosaur Lesothosaurus diagnosticus Galton, 1978 collected from a bonebed in the Fouriesburg district of the Free State, South Africa.
Choiniere, JN, Butler, RJ, Baron, MG, Yates, AM, Barrett, PM   +4 more
core   +3 more sources

Paleotemperature modeling of hydrocarbon generation centers and their role in the formation of «Paleozoic» oil deposits (Ostaninskoe field, Tomsk region)

Georesursy
Study and exploration of the pre-Jurassic oil and gas complex in Western Siberia is one of the aspects of hydrocarbon raw-material base development. The main scope of this study is to locate the source of Paleozoic hydrocarbons.
V. I. Isaev, M. F. Galieva, A. O. Aleeva, G. A. Lobova, V. I. Starostenko, A. N. Fomin   +5 more
doaj   +1 more source

Drowned carbonate‐rimmed margin controlling shelf‐edge delta progradation and sedimentation dynamics: Upper Cretaceous Woodbine Formation, Texas, USA

Sedimentology, EarlyView.
ABSTRACT Shelf‐edge deltas are commonly interpreted to record basinward facies migration across uninterrupted, gently dipping shelf margins; however, examples from mixed siliciclastic‐carbonate margins reveal more complex depositional dynamics. Periods and areas of carbonate sedimentation within mixed siliciclastic‐carbonate margins can modify shelf ...
Abdulkarim Al‐Hussaini, Cornel Olariu, Charles Kerans, Ronald Steel   +3 more
wiley   +1 more source

Structural pattern and its control on hydrocarbon accumulations in Wushi Sag, Kuche Depression, Tarim Basin

Petroleum Exploration and Development, 2008
Affected by the South Tianshan orogenesis, the faulted structure patterns in the Wushi Sag are very complex. Aimed to find out the basic characteristics of the structures, this article studies many seismic profile sections, the regional geology, the ...
Min ZHENG, Geng-xin PENG, Gang-lin LEI, Hua-qing GUO, Shao-ying HUANG, Chao WU, Yue-jun LI   +6 more
doaj   +1 more source

Seawater redox variations during the deposition of the Kimmeridge Clay Formation, United Kingdom (Upper Jurassic): evidence from molybdenum isotopes and trace metal ratios [PDF]

, 2010
The Kimmeridge Clay Formation (KCF) and its equivalents worldwide represent one of the most prolonged periods of organic carbon accumulation of the Mesozoic.
Pearce, Christopher R., Cohen, Anthony S., Coe, Angela L., Christopher R. Pearce, Angela L. Coe, Anthony S. Cohen   +5 more
core   +1 more source

Approaches to 3D Seismic Data Interpretation in the Study of the Pre-Jurassic Complex of Western Siberia (Frolovskaya Megadepression)

Georesursy
The pre-Jurassic complex (PJC) of the Frolovskaya mega-depression in Western Siberia is a promising direction for expanding the resource base: 68 fields are currently on the state balance, holding geological reserves of approximately 965 million tonnes ...
A. I. Khisamutdinova, A. S. Grinevsky, D. E. Miroshnichenko, A. F. Romanchuk, A. A. Barantsev, R. Yu. Boyarkin, T. N. Kiryanov, A. A. Bakulin   +7 more
doaj   +1 more source

GENESIS OF HYDROCARBONS OF JURASSIC AND PRE-JURASSIC COMPLEXES OF CHISTINNOE FIELD (KOLTOGORSK URENGOY PALEORIFT AREA)

Известия Томского политехнического университета: Инжиниринг георесурсов, 2019
The genesis of hydrocarbons in the Jurassic and pre-Jurassic complexes of the Chistinnoe group of oil fields located in the Koltogorsk-Urengoy paleorift zone is determined. The research is relevant to substantiate the strategy of searching for oil and gas deposits, taking into account the tectonics of the basement of the West Siberian plate. The aim of
Yuriy V. Korzhov, Galina A. Lobova, Valeriy I. Isaev, Andrey I. Starikov, Marina Ya. Kuzina, Sergey A. Orlov   +5 more
openaire   +1 more source

APPLICATION OF SEISMIC METHODS FOR ESTIMATING THE PERSPECTIVE OF OIL AND GAS POTENTIAL OF THE SEDIMENTS OF THE PALEOZOIC BASEMENT OF THE WESTERN SIBERIAN PLATE

Известия Томского политехнического университета: Инжиниринг георесурсов, 2019
The relevance of the research is caused by the need to increase the raw potential of fields in Western Siberia, confined to pre-Jurassic deposits, with minimal additional exploration costs.
Aleksandra A. Volkova, Vitaly P. Merkulov   +1 more
doaj   +1 more source