Results 231 to 240 of about 277,297 (279)

The making of pure quartzose sand in continental interiors: Paraná River (Brazil and Argentina)

open access: yesSedimentology, Volume 73, Issue 3, Page 802-837, April 2026.
ABSTRACT As part of a comprehensive project on sedimentary processes in South America, this study focuses on sediment generation in the intracratonic Paraná Basin and monitors the evolution of sand composition along the Paraná River from central Brazil to the Río de la Plata estuary in Argentina.
Eduardo Garzanti   +5 more
wiley   +1 more source

Strong genetic differentiation but limited niche partitioning in a sympatric species pair separated by an allochronic reproductive barrier

open access: yesSystematic Entomology, Volume 51, Issue 2, April‐June 2026.
Sympatric sister species demonstrate substantial geographic and host overlap, with ecological analyses only finding subtle microecological variation in habitat use. Molecular analyses reveal clear genetic differentiation with no evidence of hybridization, suggesting strong reproductive isolation between species. Differences in time‐of‐day mating appear
Mitchell Irvine   +10 more
wiley   +1 more source

Exploring the Gravimetric and Geochronological Links in Ancient Terranes of the São Francisco Craton and Borborema Province, NE‐Brazil

open access: yesTerra Nova, Volume 38, Issue 2, Page 77-86, April 2026.
ABSTRACT Deep crustal fragments and structural lineaments identified through satellite gravity data provide evidence for the extension of the reworked ancient basement of the Central African Block into the northern São Francisco Craton and southern Borborema Province.
Douglas Teixeira Martins   +3 more
wiley   +1 more source

Home - About - Disclaimer - Privacy