Results 101 to 110 of about 12,768 (231)

Cephalopod limestone biofacies in the Silurian of the Carnic Alps, Austria

open access: yes, 2009
Cephalopod limestones represent one of the most peculiar biofacies that developed in Silurian times along the northern margin of Gondwana. The presence and relative abundance of fossils, clearly visible in the field, enabled a taxonomic study of the main
HISTON, Catherine, FERRETTI, Annalisa
core  

Silurian craniide brachiopods from Gotland

open access: yes, 2013
Seven craniide brachiopod genera are described from the Silurian (Wenlock–Ludlow) of Gotland, including one new genus and five new species. The new genus and species Thulecrania septicostata is unique among Silurian craniides as it possesses solid spines.
Popov, L.   +2 more
core   +1 more source

Did lingering ice sheets moderate anoxia in the early Palaeozoic of Libya?

open access: yes
The Hirnantian glaciation of West Gondwana produced a glacially sculpted topography, which is draped by organic-rich latest Ordovician and early Silurian ‘hot shales’.
Meinhold, Guido   +3 more
core   +1 more source

Difference Analysis of Organic Matter Enrichment Mechanisms in Upper Ordovician-Lower Silurian Shale from the Yangtze Region of Southern China and Its Geological Significance in Shale Gas Exploration

open access: yesGeofluids, 2019
The upper Ordovician-lower Silurian shale has always been the main target of marine shale gas exploration in southern China. However, the shale gas content varies greatly across different regions.
Ming Wen   +14 more
doaj   +1 more source

Silurian

open access: yes, 2002
Peer ...
Robardet, M., Gutiérrez-Marco, J. C.
openaire   +1 more source

An overview of Chinese Silurian acritarch research

open access: yes, 2016
The present paper reviews all investigations of Silurian acritarchs of China. Since Silurian acritarchs were first reported from China in 1978, significant progress has been made in Chinese Silurian acritarch research.
Yan, Kui, Li, Jun, Servais, Thomas
core   +1 more source

High palaeolatitude (Hodh, Mauritania) recovery of graptolite faunas after the Hirnantian (end Ordovician) extinction event

open access: yes
Marine shales directly overlying lower Hirnantian (uppermost Ordovician) glacially related sediments in Mauritania (North-West Africa) have produced a rich graptolite fauna spanning the Ordovician-Silurian boundary in an area of high palaeolatitude.
Underwood, Charlie J.   +2 more
core  

Silurian and its surroundings in the inner nappes of Sardinian Variscides: lithostratigraphical evidence from metamorphosed deposits

open access: yes, 2009
In the tectonic units of the Inner Nappe Zone of the Sardinian Variscides, due to metamorphism and deformation, the Silurian System and its lower and upper boundaries are badly defined.
MAMELI, Paola, OGGIANO, Giacomo
core  

Silurian fossils from South Wales

open access: yes, 2018
Silurian fossils from South ...
Philippe Gil de Mendonça
core   +1 more source

Multiply remagnetized Silurian carbonate sequence in Estonia [PDF]

open access: yesEstonian Journal of Earth Sciences, 2008
Palaeomagnetic studies were carried out on Silurian sedimentary rocks of Estonia. The studied sequence (126 samples from 4 localities) is composed of Silurian lime- and dolostones of Llandovery and Wenlock age (444–423 Ma).
Preeden, Ulla   +3 more
doaj  

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