Results 21 to 30 of about 39,068 (353)

Chondrichthyans from the Devonian–Early Carboniferous of Belarus [PDF]

Estonian Journal of Earth Sciences, 2018
Diverse remains of chondrichthyans were found in several stratigraphic levels in 18 cores of the Devonian and Lower Carboniferous of Belarus. Most of the taxa were first reported in that territory. A new species of ctenacanthiform shark, Tamiobatis elgae,
Alexander O. Ivanov, Dmitry P. Plax
doaj   +1 more source

Carboniferous to Early Permian tectono-sedimentary evolution in the western Junggar Basin, NW China: implication for the evolution of Junggar Ocean

Frontiers in Earth Science, 2023
The discovery of Carboniferous hydrocarbon source rocks in the Mahu-Shawan Sag has implied considerable exploration potential in the Carboniferous strata in the western Junggar Basin.
Fan Yang, Jianzhong Li, Shan Lu, Baoli Bian, Hailei Liu, Yanzhao Wei, Xuefeng Qi, Hao Yang   +7 more
doaj   +1 more source

Ein Arachniden-Opisthosoma aus dem Obervisé von NW-Sachsen [PDF]

Fossil Record, 1998
Ein aus dem Unterkarbon von NW-Sachsen stammendes Opisthosoma wird als Cryptomartus sp. beschrieben. Damit liegt stratigraphisch nach bisherigen Erkenntnissen der älteste Fund dieses Genus vor.An Arachnid-Opisthosoma from the Lower Carboniferous of North
E. Kahlert
doaj   +5 more sources

Calcareous algae of the Visean-Serpukhovian boundary beds in the Izyayu River section (south of the Chernyshev Uplift) [PDF]

Нефтегазовая геология: Теория и практика, 2023
We consider changes in the composition of the algaflora in the Visean-Serpukhovian boundary interval in the Izyayu River section. A transgressive trend in changing sedimentation conditions - from extremely shallow water at the end of the Visean to ...
Vevel Ya.A., Ivanova R.M., Gruzdev D.A., Zhuravlev A.V.   +3 more
doaj  

Facies changes, sedimentary environments and sequence stratigraphy of the lower Carboniferous deposits in the Kalmard area, Central Iran, Member D of Gachal formation [PDF]

Journal of Stratigraphy and Sedimentology Researches
Lower Carboniferous deposits of Kalmard area identified with informal Gachal formation which in different outcrops have different lithologic features. This formation is consists of four members A, B, C and D that predominantly consists of carbonate and ...
Mohammadnabi Gorgij, Somayyeh Shahraki Mirzaei   +1 more
doaj   +1 more source

The fossil record of early tetrapods: worker effort and the end-Permian mass extinction [PDF]

, 2010
It is important to understand the quality of the fossil record of early tetrapods (Tetrapoda, minus Lissamphibia and Amniota) because of their key role in the transition of vertebrates from water to land, their dominance of terrestrial faunas for over ...
Bebber D.F., Benton M.J., Benton M.J., Benton M.J., Emma L. Bernard, Fara E., Fara E., Flessa K.W., Jaeger G.F., James E. Tarver, Marcello Ruta, Maxwell W.D., Michael J. Benton, Peters S.E., Raup D.M., Schoch R.R., Sepkoski J.J., Valentine J.W., Wickström L.M.   +18 more
core   +3 more sources

New Permo-Carboniferous geochemical data from central Thailand: implication for a volcanic arc model [PDF]

, 1991
Current ideas and models of geotectonic reconstructions of Southeast Asia are reviewed and new data on Late Carboniferous through Middle Permian tuffites and sills from central Thailand are presented in the light of the problems of Southeast Asian ...
Altermann, Altermann, Altermann, Amstutz, Barr, Barr, Baum, Beccaluva, Buffetaut, Bunopas, Bunopas, Bunopas, Burret, Burton, Cobbing, Cooper, Damm, De Witt, Dickins, ESCAP, Fontaine, Garson, Gatinsky, Grant, Hahn, Haile, Helmcke, Helmcke, Helmcke, Ingavat-Helmcke, Macdonald, Macdonald, Macdonald, Macdonald, McElhinny, Metcalfe, Metcalfe, Metcalfe, Mitchell, Miyashiro, Miyashiro, Rao, Schermerhorn, Sengör, Shervais, Stauffer, Stauffer, Stauffer, Stöcklin, Thanasuthipitak, Tozer, Waterhouse, Wielchowsky, Winchester, Winkel, Wladyslaw Altermann, Wood, Zanettin   +57 more
core   +1 more source

Carapaces of the Dnieper-Donets Basin as a New Exploration Target for significant hydrocarbon deposits

Геофизический журнал, 2022
New geological structures — displaced blocks of salt overburden — were identified in the axial part of the Dnieper-Donets basin (DDB) beside one of the largest salt domes due to modern high-precision gravity and magnetic surveys and their joint 3D ...
T.O. Petrovska, O.P. Petrovskyi, O.M. Tsikhovska, A.Y. Trachuk   +3 more
doaj   +1 more source

New data on Upper Carboniferous–Lower Permian deposits of Bol'shevik Island, Severnaya Zemlya Archipelago [PDF]

Polar Research, 2015
We present here a detailed study of the Upper Carboniferous–Lower Permian stratigraphy of Bol'shevik Island in the Severnaya Zemlya Archipelago, consisting of the analysis of sedimentary structures and lithostratigraphy, U/Pb detrital zircon dating and ...
Victoria B. Ershova, Andrei V. Prokopiev, Valery A. Nikishin, Andrey K. Khudoley, Nikolay A. Malyshev, Anatoly M. Nikishin   +5 more
doaj   +1 more source

Lower Carboniferous calcareous algae and foraminifera of the middle part of the central paraxial zone of the Dono-Dnieper Depression (Ukraine)

Вісник Харківського національного університету імені В.Н. Каразіна. Серія Геологія. Географія. Екологія, 2021
Introduction. Today, the boundary of the Upper Visean and Lower Visean substage of the Dnieper-Donetsk Basin (DDB) remains controversial. The characteristic of associations of foraminifera and calcareous algae of Lower Carboniferous deposits in axial ...
Anastasiia Gusarova, Andrij Matveyev
doaj   +1 more source