Results 31 to 40 of about 64,380 (320)

Palaeo-earthquake events during the late Early Palaeozoic in the central Tarim Basin (NW China): evidence from deep drilling cores

Geologos, 2014
Various millimetre-, centimetre- and metre-scale soft-sediment deformation structures (SSDS) have been identified in the Upper Ordovician and Lower-Middle Silurian from deep drilling cores in the Tarim Basin (NW China). These structures include liquefied-
He Bizhu, Qiao Xiufu, Jiao Cunli, Xu Zhiqin, Cai Zhihui, Guo Xianpu, Zhang Yinli   +6 more
doaj   +1 more source

The Silurian plants [PDF]

Proceedings of the Geologists' Association, 1904
n ...
openaire   +2 more sources

Silurian Palynomorphs [PDF]

Journal of Micropalaeontology, 1985
Abstract. The data obtained from an independent study of acritarchs, chitinozoans and miospores enables the determination of maximum age ranges of samples taken from three wells. These are shown in Fig. 8.ACRITARCHSAt present, samples have been examined from six wells – A1-46, Core 2; E1-81, Cores 3, 4; F1-46, Core 3; D-31, Core 1; A1-81, Core 3 and C1-
Hill, P. J., Paris, F., Richardson, J. B.   +2 more
openaire   +2 more sources

Abrupt global-ocean anoxia during the Late Ordovician–early Silurian detected using uranium isotopes of marine carbonates

Proceedings of the National Academy of Sciences of the United States of America, 2018
Significance The Late Ordovician mass extinction (LOME) terminated one of the greatest biodiversity radiations in Earth history eliminating ∼85% of marine animals, and it is coincident with the first major glaciation of the Phanerozoic.
R. Bartlett, M. Elrick, J. Wheeley, V. Polyak, A. Desrochers, Y. Asmerom   +5 more
semanticscholar   +1 more source

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

Petroleum 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, Yuanyin ZHANG, Yongjin GAO   +2 more
doaj   +1 more source

A Monograph of the Silurian Fossils of the Girvan District in Ayrshire, with Special Reference to those contained in the “Gray Collection”

Nature, 1879
H. A. Nicholson, R. Etheridge
openalex   +3 more sources

Early Silurian crinoid diversification on Baltica: Euspirocrinus varbolaensis sp. nov. [PDF]

Estonian Journal of Earth Sciences
This article describes the crinoid Euspirocrinus varbolaensis sp. nov. from the early Silurian (Rhuddanian) of northern Estonia. Discovered within the lower Rhuddanian strata in the Reinu quarry, Rapla Parish, this is the second Rhuddanian species of ...
William I. Ausich, Mark A. Wilson, Ursula Toom   +2 more
doaj   +1 more source

U-Pn geochronology of deformed metagranites in central Sutherland, Scotland: evidence for widespread late Silurian metamorphism and ductile deformation of the Moine Supergroup during the Caledonian orogeny [PDF]

, 2003
Within the Caledonides of central Sutherland, Scotland, the Neoproterozoic metasedimentary rocks of the Moine Supergroup record NW-directed D2 ductile thrusting and nappe assembly, accompanied by widespread tight-to-isoclinal folding and amphibolite ...
Friend, C.R.L., Kinny, P.D., Kocks, H., Paterson, B.A., Rogers, G, Strachan, R.A.   +5 more
core   +1 more source

Linking the progressive expansion of reducing conditions to a stepwise mass extinction event in the late Silurian oceans

Geology, 2019
The late Ludlow Lau Event was a severe biotic crisis in the Silurian, characterized by resurgent microbial facies and faunal turnover rates otherwise only documented during the “big five” mass extinctions.
Chelsie N. Bowman, Seth A. Young, D. Kaljo, M. Eriksson, T. Them, O. Hints, T. Martma, J. Owens   +7 more
semanticscholar   +1 more source

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

Estonian 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