Results 101 to 110 of about 8,565 (224)

Electron petrography of silica polymorphs associated with pseudotachylite, Vredefort structure, South Africa [PDF]

open access: yes
High-pressure silica polymorphs (coesite and stishovite) were described from the Vredefort structure in association with pseudotachylite veinlets. In addition to the fundamental significance of the polymorphs to genetic interpretations of the structure ...
White, J. C.
core   +1 more source

A database of Triassic conodonts from a comprehensive revisión of literature [PDF]

open access: yes, 2013
The revision of a comprehensive amount of bibliography has made possible the development of a database containing the stratigraphic ranges of the conodont species from the uppermost Permian and the Triassic, with a total of 336 species in 52 genera. This
Márquez Aliaga, Ana   +2 more
core   +1 more source

CONODONT BIOSTRATIGRAPHY OF UPPER DEVONIAN TEPHRA BEARING DEPOSITS IN THE İSTANBUL-ZONGULDAK TERRANE, NW TURKEY: INSIGHTS ON THE KELLWASSER EVENTS

open access: yesRivista Italiana di Paleontologia e Stratigrafia
New evidence for a biostratigraphic assessment of the limestone succession comprising K‐bentonite levels exposed in the Yılanlı Formation of the Istanbul-Zonguldak Terrane are provided from conodonts at the Gavurpınarı quarry in Bartın area (NW Turkey).
AYŞE ATAKUL-ÖZDEMIR   +4 more
doaj   +1 more source

Early Permian Conodont Fauna and Stratigraphy of the Garden Valley Formation, Eureka County, Nevada [PDF]

open access: yes, 2015
The lower part of the Garden Valley Formation yields two distinct conodont faunas. One of late Asselian age dominated by Mesogondolella and Streptognathodus and one of Artinskian age dominated by Sweetognathus with Mesogondolella.
Chernykh, Valery V.   +3 more
core   +1 more source

Stratigraphy and Conondonts of the Upper Devonian Sequence from Two Core in Northern Iowa, September 11, 1980 [PDF]

open access: yes, 1980
The purpose of this investigation is to provide some lithostratigraphic and biostratigraphic information for the subsurface Devonian system in north-central and western ...

core  

Stratigraphy of Upper Permian and Lower Triassic Strata of the Žiri Area (Slovenia)

open access: yesGeologija, 2011
The paper deals with the stratigraphy of Late Permian and Early Triassic strata of the Lukač section in the Žiri area of western Slovenia. This is the only section presently known in the External Dinarides where the Permian-Triassic boundary is defined ...
Tea Kolar-Jurkovšek   +3 more
doaj  

Pelagic responses to oceanic anoxia during the Carnian Pluvial Episode (Late Triassic) in Panthalassa Ocean. [PDF]

open access: yesSci Rep, 2023
Tomimatsu Y   +8 more
europepmc   +1 more source

Early Carboniferous conodonts from the Vorgashor Formation on the Haruta River (Polar Urals) and interfacial correlation of the upper part of the Lower Carboniferous [PDF]

open access: yesНефтегазовая геология: Теория и практика
This paper presents a study of conodont assemblages from the Vorgashor Formation exposed along the Haruta River (Polar Urals). The material includes subautochthonous conodont associations recovered from hemipelagic deposits and calciturbidites in the ...
Zhuravlev A.V.
doaj  

Seawater 87Sr/86Sr Stratigraphy of the Middle Ordovician in Central Virginia [PDF]

open access: yes, 2017
Throughout most of the past century, the correlation of strata in a region has mainly been defined through biostratigraphy, the dating of rock through fossil succession.
Newby, Sean
core  

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