Results 51 to 60 of about 4,290 (216)

The Spatial and Temporal Evolution of Mixed Carbonate‐Clastic Mud‐Dominated Basin Fill Successions: The Middle to Late Devonian Shelf Margin, Western Canada

Basin Research, Volume 37, Issue 6, November/December 2025.
The spatial interplay between updip clastic and carbonate depositional systems and downdip detrital and biogenic mud dominated depositional systems are mapped temporally using the sequence stratigraphic method to predict the occurrence of aquifers, petroleum reservoirs and organic‐rich deposits. ABSTRACT Middle to Upper Devonian strata preserved in the
Rene Jonk, Kevin Bohacs, Ken Potma
wiley   +1 more source

Potyphyllum, a new phillipsastreid genus of rugose corals in the Upper Frasnian of Belgium with precisions about the age of the Petit-Mont Member [PDF]

, 2016
The new genus Potyphyllum is erected with Cyathophyllum ananas Goldfuss, 1826 as type species, for which a neotype is selected here from the north side of the Namur Basin.
Coen-Aubert, M.
core  

Clay mineralogy, chemistry, and diagenesis of late devonian K-bentonite occurrences in northwestern Turkey [PDF]

, 2015
Thin beds of tephra (K-bentonites) formed by the diagenesis of volcanic ash are exposed within the limestone-dolomitic limestone successions of the Yilanli formation at Zonguldak and Bartin in northwestern Turkey.
Bozkaya, Ömer, Göncüoğlu, M.C., Günal-Türkmenoğlu, A., Okuyucu, C., Yilmaz, İ.Ö., Ünlüce, Ö.   +5 more
core   +1 more source

1.38 Ga Four‐Layer Tuff Marker Horizon in North China black Shales as a Chronostratigraphic Boundary for the Pre‐Ediacaran Geological Timescale

Geophysical Research Letters, Volume 52, Issue 17, 16 September 2025.
Abstract Boundaries in the Phanerozoic chronostratigraphic scale are mainly precisely defined and dated, and many correspond to environmental catastrophes induced by the emplacement of LIPs. The pre‐Ediacaran geological timescale is currently subdivided by approximate absolute ages.
Shuan‐Hong Zhang, Sandra L. Kamo, Richard E. Ernst, Jun‐Ling Pei, Guo‐Hui Hu, Qi‐Qi Zhang, Hafida El Bilali, Yue Zhao   +7 more
wiley   +1 more source

The Uplift of Armorica and the Bretonian Movements of the Variscan Orogeny‐New Insights From Detrital Zircons in the Early Carboniferous Terrigenous Rocks of the Laval Basin (Armorican Massif, France)

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 6, June 2025.
Abstract In the French Armorican Massif, the Bretonian phase of the Variscan orogeny has been defined by the Late Devonian (Famennian‐Frasnian) erosion gap, and the Early Carboniferous (Tournaisian) syntectonic terrigenous deposits of the l’Huisserie formation in the Laval basin in the Central‐North Armorican Domain, ascribed to the Armorica ...
Wei Lin, Michel Faure, Lingtong Meng
wiley   +1 more source

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

Rivista 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, ASUMAN GÜNAL-TÜRKMENOĞLU, M. CEMAL GÖNCÜOĞLU, ÖMER BOZKAYA, CENGIZ OKUYUCU   +4 more
doaj   +1 more source

Lithological and biostratigraphic characteristics of the Upper Silurian and Lower Devonian deposits of the southwestern part of the field named after Roman Trebs

Georesursy, 2018
A conodont sequence from the Przhidolian stage of the Upper Silurian and almost the entire Lokhkovian stage of the Lower Devonian has been established in the sections of the Upper Silurian-Lower Devonian on the southwestern part of the field named after ...
Т.М. Mavrinskaya, E.N. Savelyeva, K.D. Shumatbaev   +2 more
doaj   +1 more source

Lower and Middle Famennian (Upper Devonian) rugose corals from southern Belgium and northern France [PDF]

, 2012
After the late Frasnian extinctions, the rugose corals slowly recovered during the Lower and Middle Famennian (crepida to marginifera conodont zones) in southern Belgium and northern France (Avesnois) (Namur–Dinant Basin). Six genera represented by seven
Denayer, J., Marion, J.-M., Mottequin, B., Poty, E.   +3 more
core  

Organic carbon stocks in weathered bedrock—Establishing the soil parent material as a new horizon in soil carbon research

Vadose Zone Journal, Volume 24, Issue 2, March/April 2025.
Abstract Soil organic carbon is essential for sustaining soil health and functioning and for achieving the United Nations Sustainable Development Goals. However, soil carbon research to date has focused predominantly on the surface horizons of soil, with fewer studies accounting for the carbon stored down the whole soil profile.
Daniel L. Evans
wiley   +1 more source

FRASNIAN AND VISEAN-NAMURIAN CONODONT FAUNAS AT PRAPROTNO, SLOVENIA

Rivista Italiana di Paleontologia e Stratigrafia, 2017
Conodont faunas from the limestone pebbles of the Upper Paleozoic Conglomerate at Praprotno, Slovenia demonstrate the presence of two faunas. The older fauna, marked by Palmatolepis surecta and Polygnathus decorosus is indicative of the Frasnian stage ...
TEA KOLAR-JURKOVSEK, BOGDAN JURKOVSEK
doaj   +1 more source