Results 101 to 110 of about 106,743 (301)

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

Biological Reviews, EarlyView.
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

Geology of groundwater occurrences of the Lower Cretaceus sandstone aquifer in East Central Sinai, Egypt

Acque Sotterranee, 2017
The present study focused on investigating the impact of geological setting on the groundwater occurrences of the Lower Cretaceous sandstone aquifer (Malha).
Saad Younes Ghoubachi
doaj   +1 more source

Barremian and Aptian (Cretaceous) sharks and rays from Speeton, Yorkshire, north-east England [PDF]

, 2004
Bulk sampling of a number of horizons within the upper part of the Speeton Clay Type section has produced teeth and other remains of sharks and rays from several poorly studied horizons.
Applegate, Ayres, Batchelor, Berg, Biddle, Biddle, Bonaparte, C. J. Underwood, Cappetta, Cappetta, Cappetta, Cappetta, Casier, Compagno, de Blainvile, Duffin, Gill, Glickman, Herman, Herman, Kriwet, Müller, Pictet, Regan, Schmitz, Siverson, Siverson, Stinton, Thies, Thies, Thiolliere, Underwood, Underwood, Ward, Woodward   +34 more
core   +1 more source

Optimal mud pressure design using nonlinear failure criteria for wellbores in shaley sedimentary reservoir

Deep Underground Science and Engineering, EarlyView.
The present study uses the Modified Mohr‐Coulomb true‐triaxial failure criterion (MMC_TT), which predicts the strength of rock better than the MGC criterion in laboratory true‐triaxial tests to overcome the limitations. Moreover, based on the data from previously published five vertical wells in the Krishna‐Godavari basin (K‐G basin), an empirical ...
Ravindra K. Burnwal, Aditya Singh
wiley   +1 more source

Slip versus dilation tendency parameter space as a tool for prospecting structurally controlled geothermal systems in greenfield: insights from the greater Ruhr region

Deep Underground Science and Engineering, EarlyView.
This study highlights that with the static and time‐dependent evolution of slip versus dilation tendency parameter space, structurally controlled deep geothermal systems can be selected within areas of higher permeability and lower seismic hazard. Abstract Faults play a vital role in the Earth's hydraulic system by facilitating fluid flow when dilating
Michal Kruszewski, Alessandro Verdecchia, Oliver Heidbach, Rebecca M. Harrington, David Healy   +4 more
wiley   +1 more source

Glaukonitaren sorrera Euskokantauriar arroko Kretazeoko karbonatozko plataformetan [PDF]

Munibe Ciencias Naturales
Euskokantauriar arroko (EKA) Aptiar-Albiar adineko (Behe Kretazeoa) glaukonitan aberastutako arroken berrikuspena burutu da. Bi adibide adierazgarri hautatu dira azterketa petrologikoa eta mineralogikoa gauzatzeko: arroaren mendebaldeko nagusiki ...
Jone Arbulu, Arantza Aranburu, Arantxa Bodego   +2 more
doaj   +1 more source

Early Cenozoic denudation of central west Britain in response to transient and permanent uplift above a mantle plume [PDF]

, 2018
Upwelling mantle plumes beneath continental crust are predicted to produce difficult to quantify, modest uplift and denudation. The contribution of permanent and transient components to the uplift is also difficult to distinguish.
Al-Kindi, Arrowsmith, Bamford, Barnett-Moore, Beucher, Bluck, Blundell, Bott, Bott, Bott, Braun, Braun, Braun, Brown, Brown, Brown, Brown, Brown, C. Persano, Chadwick, Cogné, Cogné, Cope, Cox, Croudace, Davis, Dobson, Downing, F. M. Stuart, Farley, Flowers, Gallagher, Ganerød, Gautheron, Gautheron, Gautheron, Gautheron, Gleadow, Green, Green, Green, Green, Green, Guenthner, Hancock, Hancock, Haq, Hartley, Hillis, Holford, Holliday, Jackson, Japsen, Jones, Jones, K. Łuszczak, Ketcham, Lewis, Lister, Liu, Lundin, Mackay, Maclennan, McDowell, Meesters, Montgomery, Moucha, Mudge, Murray, Nadin, Persano, Persano, Petersen, Rowley, Rudge, Rundle, Saunders, Shaw Champion, Shennan, Simms, Simms, Stephenson, Stoker, Stuart, Tiley, Tiley, Tomlinson, Vernon, Ware, Westaway, Westaway, Westaway, White, White, White, Williamson, Ziegler, Ziegler, Łuszczak   +98 more
core   +1 more source

Semi‐analytical solution for the stability of deep vertical shaft considering time‐dependent rock‐structure interaction

Deep Underground Science and Engineering, EarlyView.
A novel cavity contraction solution and multilayer shaft wall model were developed to analyze deep shaft stability, considering rock viscosity, support structures, and water pressure, with successful validation through a Hulusu Coal Mine case study.
Bin Chen, Pinqiang Mo, Zhao Lu, Lianfei Kuang, Qiang Zhang, Abolfazl Eslami   +5 more
wiley   +1 more source

Palissya – absolutely incomprehensible or surprisingly interpretable: a new morphological model, affiliations and phylogenetic insights.

Acta Palaeobotanica, 2019
The morphology of the adaxial structures of cones belonging to Palissya Endlicher 1847 emend. nov. are reinterpreted based on exquisitely preserved permineralised material from the Lower Cretaceous of Queensland.
GARY A. PATTEMORE, ANDREW C. ROZEFELDS
doaj   +1 more source

Hybrid coastal edges in the Neuquén Basin (Allen Formation, Upper Cretaceous, Argentina) [PDF]

, 2015
The Allen Formation records the first Ingression Atlantic to the Neuquén Basin during the Late Cretaceous. The definition of lithofacies and facies associations interpretation for stratigraphic sections in Paso Córdoba and Salitral Moreno area, Río ...
Armas, María Paula, Sanchez, Maria Lidia   +1 more
core   +1 more source