Results 81 to 90 of about 4,384 (164)

Recording Kimmeridgian Palaeoclimate Changes Using Biofacial and Isotopic Analyses of Benthic Foraminifers From Normandy (Northwest France)

Paleoceanography and Paleoclimatology, Volume 41, Issue 7, July 2026.
Abstract During the Kimmeridgian, the Wealdian Basin experienced several periodic disaerobic events, interpreted as the result of extensive rainfall patterns, high sea level and moderate stratification of the water column. These events are recorded in different regions of UK and France.
C. P. A.‐M. Colpaert, O. Friedrich, E. Samankassou, A. Fischer   +3 more
wiley   +1 more source

A new sedimentary and biostratigraphic framework for the Callovian-Oxfordian transition on the Atlantic margin of Morocco [PDF]

A major global marine transgression occurred during the Callovian to Early Kimmeridgian, which was interrupted locally by a hiatus during the Late Callovian to Early Oxfordian.
Bulot, Luc Georges, Charton, Remi, Masrour, Moussa (author), Simmons, Mike (author), Bulot, Luc (author), Redfern, Jonathan (author), Redfern, Jonathan, Schröder, Stefan; id_orcid, Duval-Arnould, Aude (author), Duval-Arnould, Aude Marie Luce Fran, Duval-Arnould, Aude, Schröder, Stefan (author), Charton, R.J.G. (author), Redfern, Jonathan; id_orcid, Simmons, Mike, Masrour, Moussa, Bonnot, Alain (author), Schröder, Stefan, Bulot, Luc, Bonnot, Alain   +19 more
core   +1 more source

Contrasting Hydrosedimentary Dynamics in Two Mediterranean Watersheds: Insights From Flood Hydrograph Decompositions

Hydrological Processes, Volume 40, Issue 6, June 2026.
This paper highlights the role of groundwater inputs to the river system during flood events in diluting suspended sediment concentration, in two small badland catchments with contrasting vegetation cover. The findings underline the importance of isolating the surface runoff component to better understand and prioritise hydrosedimentary processes ...
Ophélie Fischer, Cédric Legout, Caroline Le‐Bouteiller, Guillaume Nord, Sébastien Klotz   +4 more
wiley   +1 more source

Lessons Learned From Using Simple Supervised Learning Tools on Small‐Ensemble Data—Applicability to Tunnel Design and Monitoring

International Journal for Numerical and Analytical Methods in Geomechanics, Volume 50, Issue 8, Page 3397-3411, 10 June 2026.
ABSTRACT Integrating interdisciplinary strategies with artificial intelligence (AI), particularly machine learning (ML), is an effective way of addressing urgent engineering challenges. Therefore, a thorough evaluation of existing methodologies is essential, taking into account their respective strengths, limitations and opportunities.
Lina‐María Guayacán‐Carrillo, Jean‐Michel Pereira, Jean Sulem   +2 more
wiley   +1 more source

SCOTTISH CALLOVIAN AND OXFORDIAN OSTRACODA

, 1970
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
openaire   +1 more source

Late Jurassic Carbon Isotope Excursion (Middle Oxfordian Event) Paces With Astronomical Forcing in the Northwestern Tethys

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 6, June 2026.
Abstract Marine carbonate carbon isotopes (δ13C), over orbital to multi‐million‐year timescales, provide critical insight into the carbon cycle connecting Earth's atmosphere, lithosphere, hydrosphere and biosphere. However, the influence of astronomical forcing on deep time carbon cycle dynamics remains poorly constrained.
Deyan Zhang, Su Li, Xu Yao, Chuanlong Mou, Ulrich Heimhofer   +4 more
wiley   +1 more source

Middle Oxfordian ammonite biostratigraphy of the Lower Santiago Formation at Tamán, San Luis Potosí, Mexico — with notes on Mexico-Caribbean ochetoceratins

Revista Mexicana de Ciencias Geológicas, 2018
Bed-by-bed sampling of ammonites from clayey to calcareous siltstones of the basal part of the Santiago Formation at the type section in Tamán, San Luis Potosí (Mexico) is first reported. Ammonites belonging to assemblages described by Burckhardt (1912),
Federico Olóriz, Ana B. Villaseñor, Isabel López-Palomino   +2 more
doaj  

An exquisitely preserved young iguanodontian from the Upper Jurassic of Tanzania sheds light on skeletal fusion patterns within Archosauria

Papers in Palaeontology, Volume 12, Issue 3, May/June 2026.
Abstract Dysalotosaurus lettowvorbecki (Ornithopoda, Dinosauria) is a small‐sized dryosaurid iguanodontian known from various isolated remains collected from the Tendaguru Formation (Upper Jurassic, Tanzania). Micro‐computed tomography of a small individual encased in a block offered a unique opportunity to describe c.
Riccardo Rocchi, Filippo Maria Rotatori, Gabriel S. Ferreira, Federico Fanti   +3 more
wiley   +1 more source

Biostratigraphic subdivisions of Bimammatum Biozone (Upper Oxfordian) in the nororiental Iberian Chain: fades and range of discontinuities

, 1995
Middle to Upper Oxfordian rocks in the northeastern Iberian Chain (Spain) are formed by bioclastic sponge limestones (Yatova Fm.). The development of the sponge facies, however, appears geographically and stratigraphically limited by the development of ...
Meléndez Hevia, Guillermo, Bello Villalba, J., Pérez Urresti, I.   +2 more
core  

Ammonites from the Oxfordian-Kimmeridgian boundary and the Lower–Upper Kimmeridgian of Kachchh, western India [PDF]

, 2013
Several new specimens of ammonites from the Oxfordian and Kimmeridgian of Kachchh, western India, are described and illustrated. The Oxfordian ammonites ?Subdiscosphinctes Malinowska, Perisphinctes Waagen, Dichotomoceras Buckman, and ?Larcheria Tintant ...
Pandey, D., Fürsich, F., Alberti, M., Głowniak, E., Olóriz, F.   +4 more
core