Results 191 to 200 of about 14,636 (288)

Confirming the impact origin of the São Miguel do Tapuio structure, northeastern Brazil

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract The São Miguel do Tapuio structure (SMT) is a remarkable, nearcircular feature of about 21 km diameter, centered at 5°37.6′ S, 41°23.3′ W in Piauí state, northeastern Brazil. The structure is located within the sedimentary strata of the Paleozoic–Mesozoic Parnaíba Basin and predominantly comprises sandstones of the Devonian Pimenteiras and ...
Alvaro Penteado Crósta   +9 more
wiley   +1 more source

Geophysical investigation of the Santa Marta impact structure—Piauí State, Brazil

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract The Santa Marta impact structure in northeastern Brazil, recognized as a partially preserved complex crater, was investigated through an integrated geophysical study employing magnetotelluric (MT) and gravity methods. Our research provides constraints on the crater's subsurface architecture.
Elienara Vasconcelos   +5 more
wiley   +1 more source

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

open access: yesMeteoritics &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   +5 more
wiley   +1 more source

Ocean-Atmosphere Interactions in an Extratropical Cyclone in the Southwest Atlantic

open access: yesAnuário do Instituto de Geociências - UFRJ, 2019
U. A. SUTIL   +3 more
openaire   +2 more sources

Speaking to Power: How Linguistic Minority Accents Shape Voter Perceptions of Party Leaders

open access: yesNations and Nationalism, EarlyView.
ABSTRACT In multilingual countries, does the way minority group members speak the majority language hinder their chances of attaining the highest political office? Can their accent undermine their claim to represent all citizens? Is it associated with certain stereotypes?
Florence Laflamme, Philippe Chassé
wiley   +1 more source

Changes in photosynthesis and grazing facilitate growth of a mixotrophic protist under ocean acidification and warming

open access: yesNew Phytologist, EarlyView.
Grazing rates of Ochromonas CCMP2951 expressed as carbon obtained per mean cell volume (a) and Caut/het‐photosynthetically fixed carbon divided by carbon obtained through grazing (b) in the four experimental treatments. Summary Mixotrophic protists capable of both photosynthesis and phagotrophy are key members of marine plankton communities.
Shai Slomka   +4 more
wiley   +1 more source

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