Results 11 to 20 of about 172 (155)

Seismic reflection and topography insights into Ries crater diameter and megablock zone

Meteoritics & Planetary Science
Abstract Most of the extensive crater‐wide geophysical studies at the Ries impact structure were made decades ago when the origin of the structure was still being debated. Although it is one of the most studied impact structures, its internal structure was not imaged in high resolution until recently.
Kaidi Karro, Argo Jõeleht, Naoma McCall, Sean P. S. Gulick, Jakob Wilk, Gisela Pösges   +5 more
openaire   +2 more sources

A possible 5 km wide impact structure with associated 22 km wide exterior collapse terrain in the Alhabia–Tabernas Basin, southeastern Spain

Meteoritics &Planetary Science, Volume 58, Issue 10, Page 1512-1539, October 2023., 2023
Abstract The Tabernas–Alhabia Basin is a structural depression situated in the province of Almería, southeastern Spain. The basin is filled with Neogene, Pliocene, and Pleistocene sediments resting discordantly on a Paleozoic metamorphic basement. During the marine Tortonian sedimentation, a bed of breccia (Gordo megabed) was formed.
Sebastián Tomás Sánchez Gómez, Jens Ormö, Carl Alwmark, Sanna Holm‐Alwmark, Gabriel Zachén, Robert Lilljequist, Juan Antonio Sánchez Garrido   +6 more
wiley   +1 more source

Twinned calcite as an indicator of high differential stresses and low shock pressure conditions during impact cratering

Meteoritics &Planetary Science, Volume 58, Issue 9, Page 1287-1305, September 2023., 2023
Abstract Shock‐related calcite twins are characterized in calcite‐bearing metagranite cataclasites within crystalline megablocks of the Ries impact structure, Germany, as well as in cores from the FBN1973 research drilling. The calcite likely originates from pre‐impact veins within the Variscan metagranites and gneisses, while the cataclasis is due to ...
Lina Seybold, Claudia A. Trepmann, Stefan Hölzl, Kilian Pollok, Falko Langenhorst, Fabian Dellefant, Melanie Kaliwoda   +6 more
wiley   +1 more source

Educational interventions involving physical manipulatives for improving children's learning and development: A scoping review

Review of Education, Volume 11, Issue 2, August 2023., 2023
Abstract Physical manipulatives (PMs) are concrete objects used during hands‐on learning activities (e.g., building blocks, fraction tiles, counters), and are widely used in primary‐school teaching, especially during maths instruction. This scoping review collated studies that have examined the effectiveness of educational PM interventions with pre ...
Elizabeth M. Byrne, Hanne Jensen, Bo Stjerne Thomsen, Paul G. Ramchandani   +3 more
wiley   +1 more source

First evidence of accumulation of mega boulders on the Mediterranean rocky coast of Provence (southern France) [PDF]

Natural Hazards and Earth System Sciences, 2011
An accumulation of boulders was recently discovered along the rocky coast of the Gulf of Fos located in Provence, in an area exposed to a south-westerly wave regime.
C. Vella, F. Demory, V. Canut, P. Dussouillez, T. J. Fleury   +4 more
doaj   +1 more source

Pacific Pumas in Indian Jungle: Place of Latin America in Indo-Pacific

Vestnik MGIMO-Universiteta, 2023
The article examines the political potential of Latin American countries in bolstering their influence within the Indo-Pacific region (IP). It delves into the Indo-Pacific concept, championed internationally by India and Japan, as an alternative ...
T. A. Vorotnikova
doaj   +1 more source

Ore bearing factors of breaking-block structures of the Ukrainian shield

Геофизический журнал, 2019
Most ore occurrences and mineral deposits are known to be located in tectonic fault zones. In this regard, the article analyzes the ore content of regional and local fault zones developed in the megastructures of the Ukrainian shield: Podolsky, Volynsky,
М. А. Yaroschuk, А. V. Vaylo, L. S. Оsmachko, А. Ye. Ganevich   +3 more
doaj   +1 more source

Evolution of the composition of hydrothermal mineral-forming fluid of ore deposits in early Precambrian of the Ukrainian Shield

Геофизический журнал, 2023
The aim of the study, the results of which are presented in this article, is to study changes in the composition of hydrothermal fluid ore systems of the early Precambrian on the example of gold and uranium ore deposits of the Ukrainian shield in ...
Yu.O. Fomin, Yu.M. Demikhov, V.G. Verkhovtsev, V.V. Pokalyuk, O.V. Buglak, N.M. Borisova   +5 more
doaj   +1 more source

Metallogeny of the Lyapinsky megablock (Subpolar Urals)

NEWS of the Ural State Mining University, 2021
Purpose of the work: elucidation of the geological structure, manifestations of magmatism, geodynamics and metallogeny of one of the largest segments of the paleocontinental sector of the Lyapin megablock in the Urals. The peculiarity of the metallogenic specialization of the latter for uranium, thorium, rare metals, gold, optical quartz caused both ...
openaire   +1 more source

The Proximal Ejecta Around the Marine‐Target Lockne Impact Structure, Sweden

Journal of Geophysical Research: Planets, Volume 128, Issue 7, July 2023., 2023
Abstract Very few impact craters on Earth have preserved proximal ejecta (ejecta blanket), which when present help us to better understand the cratering processes when asteroid hits Earth. The 458 Ma old Lockne impact structure consists of a 7.5‐km wide nested crater in the crystalline basement surrounded by an approximately 3‐km wide brim developed in
Erik Sturkell, Jens Ormö, Eric Austin Hegardt, Gabrielle Stockmann, Erik Meland, Torbjörn Wikström   +5 more
wiley   +1 more source