Results 41 to 50 of about 2,894 (184)

Accretion and Differentiation of Vesta and the Mesosiderite Parent Body Inferred From Ni Stable Isotope Compositions

Geophysical Research Letters, Volume 52, Issue 19, 16 October 2025.
Abstract We present high‐precision Ni stable isotope data for mesosiderites, eucrites, and diogenites to investigate the accretion and differentiation of asteroid 4 Vesta. Ni isotope variations in eucrites and diogenites are dominated by kinetic diffusion and chondritic contamination, rendering them unsuitable for reconstructing Vesta's primitive Ni ...
Ke Zhu, Makiko K. Haba, Qi Chen, Lu Chen
wiley   +1 more source

Modeling Overpressure Development and the Mechanical Behavior of Sediments in a Complex, Tectonically Active Setting: East Coast Basin, New Zealand

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 10, October 2025.
Abstract The East Coast Basin (ECB) is a complex, active convergent margin located on the North Island of New Zealand, where variable but commonly very high overpressures occur in Cretaceous to Pleistocene stratigraphy. Using a consistent set of sediment physical properties and a single value for tectonic compression, a multi‐1D hydro‐mechanical ...
E. E. Calderon Medina, J. Obradors‐Prats, A. C. Aplin, S. J. Jones, M. Rouainia, A. J. L. Crook   +5 more
wiley   +1 more source

Hierarchy of bounding surfaces in aeolian sandstones of the Jurassic Tordillo Formation (Neuquén Basin, Argentina) [PDF]

, 2005
The Tordillo Formation is a continental clastic unit deposited in the Neuquén Basin during the Late Jurassic. This paper discusses the stratigraphy of the succession outcropping at the Quebrada del Sapo, with emphasis on the origin, dimensions and ...
Maretto, H., Meglio, M. di, Zavala, C.
core   +3 more sources

The Silent VOICE—Searching for Geochemical Markers to Track the Impact of Late Jurassic Rift Tectonics

Geochemistry, Geophysics, Geosystems, Volume 25, Issue 10, October 2024.
Abstract A causal mechanism for the Volgian Isotopic Carbon Excursion (VOICE) remains enigmatic. Elemental geochemical profiles of the Deer Bay Formation, Sverdrup Basin, Arctic Canada that record the VOICE and contemporaneous strata are herein examined to provide insight into depositional environments during Late Jurassic‐Early Cretaceous time. Silver
Jennifer M. Galloway, Thomas Hadlari, Keith Dewing, Terence Poulton, Stephen E. Grasby, Lutz Reinhardt, Mikhail Rogov, Jack Longman, Madeleine Vickers   +8 more
wiley   +1 more source

Machine learning applied to geochemical missing data of the Vaca Muerta unconventional reservoir: dealing with small sample sizes and heterogeneity

Unconventional Resources
Geochemical data provide comprehensive insights into reservoir chemistry, commonly obtained from well logs or through the laboratory analysis of core or cuttings samples. Data may be missing from certain intervals due to mechanical failures or geological
Verónica Y. Zapata, Neil Craigie, Guillermina Sagasti   +2 more
doaj   +1 more source

Provenance and the U–Pb age constraints on the tuff beds of the Late Jurassic–Early Cretaceous Bazhenovo Formation, West Siberian Basin

The Depositional Record, Volume 10, Issue 2, Page 312-334, April 2024.
Report on the geochemistry and geochronology of the tuff beds from the Bazhenovo black shales, West Siberian Basin. Geochemical discrimination indicates an affinity with volcanic arc basalts. New constraints on the J–K boundary in the Boreal Realm using high‐precision U–Pb data.
Timur Bulatov, Yakov Yermakov, Anna Kulikova, Bulat Gareev, Mikhail Spasennykh   +4 more
wiley   +1 more source

Sedimentología y estratigrafía de la Formación Vaca Muerta (Tithoniano-Berriasiano) en el área del cerro Domuyo, norte de Neuquén, Argentina Sedimentology and stratigraphy of the Vaca Muerta Formation in the Cerro Domuyo area, Northern Neuquén, Argentina

Andean Geology, 2013
Los depósitos de la Formación Vaca Muerta en el área del cerro Domuyo muestran una interesante interca-laclón de depósitos con paleocorrientes opuestas. La unidad está representada por facies de cuenca y rampa externa con dirección de progradación hacia ...
Diego A Kietzmann, Verónica V Vennari
doaj  

Formation age of mesosiderites [PDF]

, 2017
第8回極域科学シンポジウム/個別セッション：[OA] 南極隕石12月7日（木）国語研究所 2階講堂The Eighth Symposium on Polar Science/Ordinary sessions: [OA] Antarctic meteoritesThu.

core   +1 more source

Why Do Some Multinational Firms Respond Better Than Others to the Hostility of Host Governments? Proximal Embedding and the Side Effects of Local Partnerships

Journal of Management Studies, Volume 61, Issue 2, Page 627-685, March 2024.
Abstract Using a multiple‐case study of alleged expropriations reported before the World Bank, we examine how multinational companies (MNC) react to the escalating hostility of host governments. Our study reveals how different choices regarding the interaction with local nonmarket stakeholders – which we refer to as proximal vs.
Caterina Moschieri, Davide Ravasi, Quy Huy   +2 more
wiley   +1 more source

Estratigrafía y análisis de facies de la Formación Vaca Muerta en el área de El Trapial [PDF]

, 2015
La importancia de los análisis estratigráficos, de facies y sedimentológicos para evaluar el potencial de un reservorio no convencional para identificar las zonas más favorables para la prospección y explotación de hidrocarburos.Fil: González Tomassini ...
Crousse, Luisa C., Fantin, Manuel A., González Tomassini, Federico, Kietzmann, Diego Alejandro, Reijenstein, Hernán M.   +4 more
core