Results 111 to 120 of about 6,336 (226)

The Upper Ordovician of northeastern Gorny Altai: Stratigraphy and deposition environments

, 2018
Comprehensive lithofacies and biofacies analysis provided constraints on the origin of Upper Ordovician clastic and carbonate deposits in northeastern Gorny Altai, which form large low-elevated flat carbonate banks located relatively close to the shore ...
T.Yu. Tolmacheva, N.V. Sennikov, E.V. Lykova, R.A. Khabibulina, O.T. Obut   +4 more
core   +1 more source

Litho-paleoecological characteristics of the Upper Ordovician reef Bol'shaya Kos'yu (Ilych River, Northern Urals)

Литосфера, 2016
The litho-paleoecological characteristics of the Upper Ordovician reef Bol’shaya Kos’yu was given. The reef paleolandscape profile - reef plateau, reef internal lagoons, and frontal reef zone was determined, and reef facies were described.
L. A. Shmeleva
doaj  

The stratigraphy, correlation, provenance and palaeogeography of the Skiddaw Group (Ordovician) in the English Lake District [PDF]

, 1995
A new lithostratigraphy is presented for the Skiddaw Group (lower Ordovician) of the English Lake District. Two stratigraphical belts are described. Five formations are defined in the Northern Fells Belt, ranging in age from Tremadoc to early Llanvirn.
Cooper, A.H., Rushton, A.W.A., Moore, R.M., Webb, B.C., Molyneux, S.G., Hughes, R.A.   +5 more
core  

Attempted predation and shell repair in Middle and Upper Ordovician gastropods from Sweden

, 1997
Repaired shell injuries are reported in 11 specimens including six genera and eight species of gastropods from the upper Middle Ordovician (Caradoc) Kullsberg Limestone and the Upper Ordovician (Ashgill) Boda Limestone, Siljan district, Sweden.
Peel, John S.,, Ebbestad, Jan Ove R.,
core  

Palaeozoic and Mesozoic Palaeomagnetism of South America: Results from Peru, Bolivia, Argentina, and Brazil. [PDF]

, 2004
Im Rahmen der vorliegenden Arbeit, wurden in verschiedenen Regionen Südamerikas detaillierte paläomagnetische Untersuchungen durchgeführt. Ziel dieser Arbeiten war die Erstellung einer hochauflösenden scheinbaren Polwanderkurve für Gondwana im ...
Rakotosolofo, Nicolas A.
core  

Ordovician and Silurian magmatism in the Upper Nappe, Uppermost Allochthon, Helgeland Nappe Complex, north-central Norway

, 2011
The structurally lowest parts of the Upper Nappe of the Helgeland Nappe Complex consist primarily of migmatitic quartzofeldspathic gneiss with intercalated calc-silicate gneiss.
Barnes, Melanie A., Allen, Charlotte M., Reid, Kristin, Barnes, Calvin G., Yoshinobu, Aaron S., Frost, Carol D.   +5 more
core  

Middle and Upper Ordovician graptolites, trilobites, and biostratigraphy of Scania and Jämtland, Sweden

, 2001
Graptolites and some trilobites from Middle–Upper Ordovician siliciclastic and calcareous rocks in Scania (Skåne), southern Sweden, and Jämtland, central Sweden, are described and discussed.
Pålsson, Christian
core   +1 more source

Classification and logging identification of reservoir space near the upper Ordovician pinch-out line in Tahe Oilfield

Open Geosciences
Real drilling near the upper Ordovician pinch-out line in the Tahe Oilfield shows that the drilling encountered karst reservoir. However, due to the transitional position between the denudation area and the overlying area and the special karst geological
Yang Debin, Jin Yanlin, Zhang Juan, Xie Runcheng, Chen Huaxin, Yin Shuai, Cai Wenli   +6 more
doaj   +1 more source

Tergomyans, gastropods, and biogeography in the Upper Ordovician of the Fågelsång district, southern Sweden

, 2009
During the Ordovician, deep-water graptolitic mudstone and shale formed in what is now the classical succession at Fågelsång, southern Sweden. Previously, only one gastropod species was described from the succession, but during this study diverse ...
Frisk, Åsa,, Högström, Anette,, Ebbestad, Jan Ove R.,   +2 more
core  

Organic matter accumulation under the Middle-Upper Ordovician tectonic transition on the western margin of the North China platform. [PDF]

Sci Rep
Li F, Zhang D, Huang Z, Chen X, Xie M, Zhang Q, Li F, Wang Q, Wang X, Liu W.   +9 more
europepmc   +1 more source