Results 31 to 40 of about 3,037 (183)

Development Characteristics of Silurian Strike-Slip Faults and Fractures and Their Effects on Drilling Leakage in Shunbei Area of Tarim Basin

open access: yesFrontiers in Earth Science, 2022
In recent years, the Ordovician fault-controlled fracture-cavity reservoirs developed in the basement strike-slip fault zone in the Shunbei area of the Tarim Basin has achieved major breakthroughs.
Haiying Li
doaj   +1 more source

Filling the Silurian gap of solutan echinoderms with the description of new species of Dehmicystis from Spain

open access: yesActa Palaeontologica Polonica, 2023
Solutans were among the most enigmatic pre-radial and asymmetric echinoderms. A new species Dehmicystis ariasi sp. nov. is described from the upper part of the Llagarinos Formation, lower Ludlow (Silurian) of Northwest Spain.
SAMUEL ZAMORA   +1 more
doaj   +1 more source

Characterization of Upper Wenlock and Lower Ludlow strata in the Silurian reference section of the Chernov Uplift (Timan-Pechora petroleum province) [PDF]

open access: yesНефтегазовая геология: Теория и практика, 2023
The features of the Upper Wenlock and Lower Ludlow boundary strata in the Silurian reference section located in the central part of the Chernov Uplift in the Arctic zone of the European Northeast of Russia are characterized.
Matveev V.A., Beznosova T.M.
doaj  

A Silurian ‘marrellomorph’ arthropod [PDF]

open access: yesProceedings of the Royal Society B: Biological Sciences, 2007
Xylokorys chledophilia, a new arthropod with three-dimensionally preserved soft tissues, is described from the Herefordshire (Silurian) Lagerstätte of England. The head and trunk are covered by a relatively featureless ovoid carapace, which comprises a domed central part and a flange-like border. The head bears five pairs of appendages.
Siveter, D   +4 more
openaire   +3 more sources

Silurian hydrocarbon exploration breakthrough and its implications in the Shajingzi structural belt of Tarim Basin, NW China

open access: yesPetroleum Exploration and Development, 2022
The Silurian hydrocarbon exploration in the northwest Tarim Basin had long been fruitless, till Well XSD1 drilled in 2018 in the Shajingzi structural belt, northwest Tarim Basin tapped industrial gas flow from the Silurian for the first time.
Junfeng ZHANG   +2 more
doaj   +1 more source

A three-dimensionally preserved lobopodian from the Herefordshire (Silurian) Lagerstätte, UK [PDF]

open access: yesRoyal Society Open Science, 2018
The Herefordshire (Silurian) Lagerstätte (approx. 430 Myr BP) has yielded, among many exceptionally preserved invertebrates, a wide range of new genera belonging to crown-group Panarthropoda.
Derek J. Siveter   +4 more
doaj   +1 more source

A new species of middle Rhuddanian Halysites (Tabulata) from Meitan, northern Guizhou, Southwest China [PDF]

open access: yesEstonian Journal of Earth Sciences, 2015
A new halysitid species, Halysites gaojiangensis, is systematically described from the middle Rhuddanian (Llandovery, Silurian) Wulipo Bed at Gaojiang, Meitan County, northern Guizhou Province, Southwest China.
Guangxu Wang, Renbin Zhan
doaj   +1 more source

On the graptolite schist's formation, Silurian-Lower Devonian, in the Carpatho-Balkanides of eastern Serbia [PDF]

open access: yesGeološki Anali Balkanskoga Poluostrva, 2005
The fabric of the Silurian and a part of the Lower Devonian in the Carpatho-Balkanides of eastern Serbia, i.e. in two large geotectonic units, the Kučaj Unit (Getic) and the Luznica Unit (West Kraishte), is reviewed in this paper.
Krstić Branislav   +2 more
doaj   +1 more source

Searching for the Ordovician–Silurian boundary in Estonia, Latvia and Lithuania [PDF]

open access: yesEstonian Journal of Earth Sciences, 2023
The present study focuses on determining the position of the lower boundary of the Silurian System in the eastern Baltic region. To achieve this, we conducted a comprehensive analysis of stable isotopic curves, combined with previously published data on ...
Tõnu Meidla, Olle Hints, Leho Ainsaar
doaj   +1 more source

Shale gas potential of the lower Silurian hot shales in southern Iran and the Arabian Plate: Characterization of organic geochemistry

open access: yesPetroleum, 2023
A significant phase of global warming appeared during the Llandovery and productive Silurian hot shale was preserved all over the world. The lower Silurian shale is the main effective source rock for most of the Paleozoic hydrocarbon in Iran and the ...
Ali Rahmani   +2 more
doaj   +1 more source

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