Results 71 to 80 of about 4,384 (164)

Time-dependent behaviour of the Callovo-Oxfordian claystone-concrete interface

Journal of Rock Mechanics and Geotechnical Engineering, 2020
In the context of the Cigéo project, the French National Radioactive Waste Management Agency (Andra) is studying the behaviour of a deep geological facility for radioactive waste deposit in the Callovo-Oxfordian (COx) claystone.
Eleni Stavropoulou, Matthieu Briffaut, Frédéric Dufour, Guillaume Camps   +3 more
doaj   +1 more source

‘The big chunky belemnite’: a new relict megateuthidid from the Oxfordian (Late Jurassic) of Wyoming, USA, and its place in the evolutionary history of the group

Papers in Palaeontology, Volume 12, Issue 5, September/October 2026.
Abstract We describe and discuss two finds of large and untypical belemnite rostra originating from the upper part of the Sundance Formation (Oxfordian) of Wyoming, USA. With a diameter reaching c. 60 mm at the anterior end, these rostra are the thickest known for belemnites so far.
Alexey P. Ippolitov, Jessica L. Lippincott, William R. Wahl, Dean R. Lomax   +3 more
wiley   +1 more source

Oxfordian fingerprints in All's Well That End's Well [PDF]

, 2006
Honors College, Washington State UniversityHettick, Nathan M. Nathan Oxfordian fingerprints in All's Well That End's Well , Washington State University Honors College thesis Spring 2006, 40 ...
Hettick, Nathan M.
core  

Magnetostratigraphic correlation of the Oxfordian–Kimmeridgian boundary

, 2009
A magnetic polarity pattern for Boreal and Sub-Boreal ammonite zones of the Upper Oxfordian to Lower Kimmeridgian was established and confirmed in four British sections, including the proposed Global Boundary Stratotype Section and Point (GSSP) on the ...
Settles, E, Hounslow, Mark, Ogg, Jim, Coe, Angela A, Wright, J.K., Atrops, F, Wierzbowski, A, Przybylski, Pietr A   +7 more
core   +3 more sources

Petroleum geology of the Upper Jurassic – Lower Cretaceous of East and North-East Greenland: Blokelv-1 borehole, Jameson Land Basin: Biostratigraphy of the Hareelv Formation (Upper Jurassic) in the Blokelv-1 core, Jameson Land, central East Greenland [PDF]

Geological Survey of Denmark and Greenland Bulletin, 2018
The Hareelv Formation in the Blokelv-1 core is biostratigraphically subdivided by means of ammonite and dinoflagellate cyst stratigraphy. The succession ranges from the Oxfordian C. densiplicatum Chronozone to the Volgian P. elegans Chronozone.
Peter Alsen, Stefan Piasecki
doaj  

The thermo-mechanical behaviour of the Callovo-Oxfordian claystone [PDF]

International Journal of Rock Mechanics and Mining Sciences, 2015
The Callovo-Oxfordian (COx) claystone is considered as a potential host rock in the French concept of high level radioactive waste disposal at great depth. To better understand and to complement existing published data on the thermo-hydro-mechanical behaviour of the COx claystone, an experimental program was carried out by using a hollow cylinder ...
Menaceur, Hamza, Delage, Pierre, Tang, Anh Minh, Conil, Nathalie   +3 more
openaire   +2 more sources

Diet of bird‐like troodontid dinosaurs: synthesis of a contentious clade

Biological Reviews, Volume 101, Issue 4, Page 1760-1778, August 2026.
ABSTRACT Troodontidae is a clade of small‐to medium‐sized maniraptoran theropods that mainly lived in Laurasia (modern Asia, North America and Europe) during the Jurassic and Cretaceous periods and are believed to have had a variety of diets. The uniqueness of troodontid teeth suggests that they diverged from the typical flesh‐based diet of non‐avian ...
Yui Chi Fan, Case Vincent Miller, Michael Pittman   +2 more
wiley   +1 more source

Carbonate microfacies and transgressive‐regressive sequences of Oxfordian shallow‐water limestones (Korallenoolith, Lower Saxony Basin)

The Depositional Record
This study represents a detailed analysis of a stratigraphic section of Oxfordian (Late Jurassic) age with the aim to reconstruct the facies pattern and sequence‐stratigraphic evolution, followed by a discussion of the dominant controls on shallow marine
Deyan Zhang, François‐Nicolas Krencker, Stefan Huck, Ulrich Heimhofer   +3 more
doaj   +1 more source

Middle–Upper Jurassic palynology of the South Sallum well, North Western Desert, Egypt

Egyptian Journal of Petroleum, 2018
Palynological analyses have been carried out on some samples of Middle–Upper Jurassic from the South Sallum well, North Western Desert, Egypt. A refinement of the original chronostratigraphy has been suggested and the stages of Bathonian – Callovian and ...
Tarek F. Mostafa, Maher I. El Soughier, Walid A. Makled   +2 more
doaj   +1 more source

Evidence of Cheliped Autotomy and Regeneration in the Lower Miocene Crab Achelous monspeliensis From Portugal

Ecology and Evolution, Volume 16, Issue 7, July 2026.
Crab autotomy with evidence of regeneration is described for the first time in the fossil record. Autotomy is a defensive behavior that affects more males than females of Achelous monspeliensis and may be related to mating season. ABSTRACT Autotomy—the voluntary shedding of a limb as a defensive response to predation, intraspecific aggression, or ...
Carlos Neto de Carvalho, Pedro Marrecas
wiley   +1 more source