Results 51 to 60 of about 424 (186)

Speed structure of the mantle under the Dnieper-Donets Depression and its surroundings. Part I

Геофизический журнал, 2020
The article discusses the high-speed structure of the mantle under the Dnieper-Donets Depression (DDD). The solution obtained by the Taylor approximation of the solution of the three-dimensional seismic tomography problem is used.
T.A. Tsvetkova, I.V. Bugaenko, L.N. Zaets   +2 more
doaj   +1 more source

Static recrystallization of shocked calcite in Ries impact breccias

Meteoritics &Planetary Science, Volume 61, Issue 7, Page 1456-1473, July 2026.
Abstract Calcite is prone to chemical and microstructural modifications, especially after having been strained at high stresses and strain rates, as during hypervelocity impact events. These modifications include precipitation from pore fluid as well as replacement of strained volumes by recrystallization. In calcite aggregates of a metagranite breccia
Claudia A. Trepmann, Fabian Dellefant, Lina Seybold, Wolfgang W. Schmahl, Elena Sturm, Daniel Weidendorfer, Sandro Jahn, Iuliia V. Sleptsova, Stuart A. Gilder   +8 more
wiley   +1 more source

What lithic clasts and lithic-rich facies can tell us about diatreme processes: An example at Round Butte, Hopi Buttes volcanic field, Navajo Nation, Arizona. [PDF]

, 2021
Round Butte (Hopi Buttes volcanic field, Arizona) exposes a diatreme 170–190 m across, 190 m below the pre-eruptive surface. The central part of the massif is 130–150 m in diameter, displaying 20–30 m-high subvertical cliffs.
Latutrie, Benjamin, Ross, Pierre-Simon
core   +1 more source

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, Volume 61, Issue 7, Page 1288-1308, July 2026.
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

Geomorphologic features related to gravitational collapse: Submarine landsliding to lateral spreading on a Late Miocene-Quaternary slope (SE Crete, eastern Mediterranean)

, 2010
Detailed geological mapping, complemented by sedimentary facies analysis, photomosaics and topographic measurements (height, width) allowed the investigation of the geomorphological features related to the Late Miocene-Quaternary gravitational collapse ...
Lourenco, Sergio, Sérgio D.N. Lourenço, Alves, Tiago Marcos, Lourenço, SDN, Alves, TM, Tiago M. Alves   +5 more
core   +1 more source

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

Meteoritics &Planetary Science, Volume 61, Issue 7, Page 1355-1385, July 2026.
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

Late‐Stage Debris Flows Eroded Aeolis Mons in Gediz Vallis, Gale Crater, Mars

Journal of Geophysical Research: Planets, Volume 131, Issue 6, June 2026.
Abstract How the ancient climate of Mars transitioned to its current cold, hyperarid state is recorded by the sedimentary rocks preserved on its surface. Gale crater, the Curiosity rover landing site, is one such location, where the central mountain, Aeolis Mons, preserves an extensive sedimentary record. Curiosity has demonstrated that the Aeolis Mons
Joel M. Davis, Sharon A. Wilson, Rebecca M. E. Williams, Lucy M. Thompson, Gerhard Paar, John A. Grant, Aster Cowart, Alex B. Bryk, Sanjeev Gupta, Steven G. Banham, Claire A. Mondro, Edwin S. Kite, Michael C. Malin, Deirdra Fey, Olivier Gasnault, Stéphane Le Mouélic, Ashwin R. Vasavada   +16 more
wiley   +1 more source

Tectonophysical analysis and geodynamic interpretation of the three-dimensional geophysical model of the Ukrainian Shield

Геофизический журнал, 2010
Geodynamic features of the Ukrainian Shield (USh) from Early Precambrian to Phanerozoic have been considered based on tectonophysical analysis of complex geophysical 3D model of the Shield, produced at the Institute of Geophysics of the National Academy ...
O.B. Gintov, I. K. Pashkevich
doaj   +1 more source

A Millennium of Coastside Occupation. Micromorphological Insights From the Indigenous Site of Las Estacas Cave, Tenerife

Geoarchaeology, Volume 41, Issue 3, May/June 2026.
ABSTRACT The archaeological site of Las Estacas Cave (NW Tenerife, Canary Islands) preserves some of the earliest human occupations in Tenerife, dating to the 2nd century CE, spanning the entire pre‐European time range up to the 15th century. Using soil micromorphology, this study applies a geoarchaeological approach to reconstruct site formation ...
Pedro García‐Villa, Cristo M. Hernández, Carolina Mallol   +2 more
wiley   +1 more source

Comparative analysis of spatial reguliarities of the development of high-order breaking failures within the areal fragments of srednepridneprovskii and ingulskii megablocks of ukrainian shield [PDF]

, 2014
Results of comparing trend azimuths of basic high-order breaking failures within Ukrainian shield in terms of Srednepridneprovskii and Ingulskii megablocks are given.Изложены результаты сравнения азимутов простирания основных разрывных ...
Zmiyevskaya, K. O.
core