Results 121 to 130 of about 26,451 (279)

Confirmation of the impact origin of the Late Ordovician Tvären impact structure (southeast Sweden) and emplacement of impactites in a marine setting

Meteoritics &Planetary Science, EarlyView.
Abstract The Tvären structure in southeastern Sweden has been listed as a confirmed marine‐target impact structure for decades. However, to date, no measurements and/or indexed data of planar deformation features in quartz grains from the structure have been published or any other unequivocal evidence of impact.
Katarzyna J. Gajewska, Sanna Alwmark, Mikael Calner, Sylvain Richoz, Jens Ormö, Erik Sturkell, Carl Alwmark   +6 more
wiley   +1 more source

ESTUDIO TECNO-ECONÓMICO DE LA INDUSTRIA LÍTICA DE CERRO CASTILLO (PROVINCIA DE ÚLTIMA ESPERANZA, CHILE) TECHNO-ECONOMIC STUDY OF CERRO CASTILLO LITHIC INDUSTRY (PROVINCIA ÚLTIMA ESPERANZA, CHILE)

Magallania, 2009
El presente estudio tecno-económico de los materiales líticos recuperados en el sitio Cerro Castillo 1, provincia de Última Esperanza - Chile, entrega nuevos antecedentes sobre los grupos cazadores terrestres que vivieron en la zona hacia aproximadamente
MATHIEU LANGLAIS, FLAVIA MORELLO
doaj  

Polymict melt‐bearing breccia dikes in the Morokweng impact structure formed by slip‐induced mechanical mixing of pseudotachylite and cataclasite along large‐displacement impact faults

Meteoritics &Planetary Science, EarlyView.
Abstract A core drilled through shocked and faulted Archean granitoid gneisses and dolerites in the eroded peak ring of the 70–80 km diameter Morokweng impact structure intersects multiple centimeter‐ to meter‐wide clastic‐matrix breccias containing a polymict clast population of lithic and mineral clasts and altered, millimeter‐ to centimeter ‐size ...
Roger L. Gibson, S'lindile S. Wela, Leonidas C. Vonopartis, Marco A. G. Andreoli   +3 more
wiley   +1 more source

Araguainha Dome, Brazil: A polygonal impact structure due to a complex pre‐impact regional structural framework

Meteoritics &Planetary Science, EarlyView.
Abstract We investigated the structural framework of the north–northwestern Paraná Basin in Brazil to test whether the pre‐impact structures in this region may have had any influence on the first‐order formation and morphostructure of the Araguainha impact structure (AIS).
Renato B. Bernardes, Wolf U. Reimold, Roger L. Gibson, Julia B. Curto Ma, Adolfo B. Silva, Natalia Hauser   +5 more
wiley   +1 more source

Book review: Contemporary Lithic Analysis in the Southeast: Problems, Solutions, and Interpretations

, 2015
This volume represents the outgrowth of practical and theoretical research in lithic analysis in the southeastern United States. Although the papers are regionally specific, the examples and methods used provide ample reason for lithic analysts and ...
John Edward Dockall, Dockall, John Edward   +1 more
core   +1 more source

Revisiting the Hummeln structure, Sweden—A shallow marine Cambrian impact structure

Meteoritics &Planetary Science, EarlyView.
Abstract Hummeln is a simple impact structure located in south‐eastern Sweden. It is approximately 1.2 km in diameter and almost completely covered by a lake. Here, we present the first detailed investigation of impactites and mapping of the 164.25 m deep drill core Hummeln‐1 with a focus on impact metamorphism and the impact process.
S. Alwmark, J. Granbom, P. Ahlberg, M. Calner, S. Richoz, K. J. Gajewska, W. R. Hyde, K. Ljung, C. Alwmark   +8 more
wiley   +1 more source

Impact‐diagnostic criteria for use in confirming a meteorite impact origin of terrestrial geological structures: Recommendations by the Impact Cratering Committee of the Meteoritical Society

Meteoritics &Planetary Science, EarlyView.
Abstract The framework of the Impact Cratering Committee (ICC) of the Meteoritical Society was approved in 2020, with the first committee members appointed in 2023. The ICC has a mandate to (1) approve, maintain, and update a database of confirmed terrestrial meteorite impact structures, (2) define and regularly update the criteria used for ...
A. J. Cavosie, S. Alwmark, D. Baratoux, G. Consolmagno, L. Ferrière, S. Goderis, N. Hauser, T. Kenkmann, C. Koeberl, G. R. Osinski, A. E. Pickersgill, M. Schönbächler   +11 more
wiley   +1 more source

Adaptations of the lithic production in the Sauveterroid level of Coveta de la Foia site (Vilafranca, Castelló)

In this paper, we analyse two different lithic adaptations of the Sauveterroid Mediterranean culture in the Valencian Country. On one hand, we have a standardized serial production of projectiles such as backed bladelets and backed micropoints.
Domingo, Inés, Roman, Dídac, Inés Domingo, Fullola Isern, Joan, Dídac Roman, Domingo Ortí, Inés, Joan Fullola Isern   +6 more
core   +1 more source

Curated character of the Initial Upper Palaeolithic lithic artefact assemblages in Bacho Kiro Cave (Bulgaria).

PLoS ONE
The dispersal of Homo sapiens across Eurasia during MIS 3 in the Late Pleistocene is marked by technological shifts and other behavioral changes, known in the archaeological record under the term of Initial Upper Paleolithic (IUP).
Tsenka Tsanova, Vincent Delvigne, Svoboda Sirakova, Elka Anastasova, Pedro Horta, Ivaylo Krumov, João Marreiros, Elena Nacheva, Zeljko Rezek, Jean-Jacques Hublin, Nikolay Sirakov   +10 more
doaj   +1 more source

Geochemical investigation of impactites from the Boltysh impact structure and possible relationship to early Danian sediments from the Umbria–Marche Basin, Italy

Meteoritics &Planetary Science, EarlyView.
Abstract Within the Danian Scaglia Rossa Formation appears a regionally correlatable horizon cutting across multiple sections and outcrops within the Umbria–Marche Basin of NE Italy, where it is intercalated with uniform pelagic carbonate successions. This horizon is called “ALE layer” and has tentatively been interpreted as a fine‐grained volcanic ash.
Toni Schulz, Sophia Wernitznig, Christian Koeberl, Bérengère Mougel, Alessandro Montanari, Frédéric Moynier   +5 more
wiley   +1 more source