Results 81 to 90 of about 41,651 (167)
Sedimentology, EarlyView.ABSTRACT Thin ferruginous sandy crusts are common on top of sandstone beds in the Early Permian post‐glacial deposits of the Paraná Basin in southern Brazil. These crusts usually preserve wrinkle structures, suggesting that they might be a product of microbial mediation.
Patrícia Weschenfelder +2 more
wiley +1 more source
Известия высших учебных заведений: Геология и разведкаBackground. The mineral association of ruby in the Snezhnoye deposit is represented by 7 rock-forming and 19 accessory minerals. Here, all minerals vary in their composition due to isomorphism.
A. K. Litvinenko, Sh. A. Odinaev
doaj +1 more source
Terra Nova, EarlyView.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
Local availability and long-range trade: the worked stone assemblage [PDF]
, 2012 Inter disciplinary study of major excavation assemblage from Norse settlement site in Orkney.
Barrett, J. +6 more
core
Evidence from Rb–Sr mineral ages for multiple orogenic events in the Caledonides of Shetland, Scotland [PDF]
, 2015 Shetland occupies a unique central location within the North Atlantic Caledonides. Thirty-three new high-precision Rb–Sr mineral ages indicate a polyorogenic history.
Bird, A. F. +3 more
core +3 more sources
Development of unfired earthen building materials using muscovite rich soils and alkali activators
Case Studies in Construction Materials, 2019 Most studies have focused on the alkali activation of thermally activated kaolinitic clays for the production of innovative building materials. Whilst the widespread use of these minerals may be hindered due to geographical availability; a combination of
Emeso Beckley Ojo +3 more
doaj +1 more source
Dating C/S Structures in Syntectonic Granites by In Situ Rb‐Sr Analyses on Muscovite
Terra Nova, EarlyView.ABSTRACT The interplay of crystallisation, deformation and fluid–rock interactions makes deciphering geochronological information complex in syntectonic granites. In this study, we apply in situ Rb‐Sr analyses to selected samples from the Questembert Variscan syntectonic granite in Western France, which was emplaced along the South Armorican Shear Zone
Philippe Boulvais, Romain Tartèse
wiley +1 more source
New Zealand Journal of Geology and Geophysics, Volume 69, Issue 1, March 2026.The Pool Burn basin is a tectonic depression that became almost isolated from the regional drainage system by river reorientation during Pleistocene uplift of surrounding ridges. Consequently, detrital gold in the basin was largely locally derived, from supergene zones on orogenic deposits and recycled from paleoplacers in erosional remnants of Miocene
Marshall Palmer, Dave Craw
wiley +1 more source
MiningThe presence of free muscovite in tailings can negatively affect the mechanical strength and rheological properties of cemented paste backfill, as has been observed for several cementitious materials. The aim of this study is to evaluate the influence of
Hadj Ghani Menasria +3 more
doaj +1 more source
Clay Reimagined: Phyllosilicates as Future Membrane Technologies
Advanced Materials Interfaces, Volume 13, Issue 3, 3 February 2026.Recent advancements in membrane technologies based on 2D materials have drawn attention for molecular‐scale separations owing to these materials’ tunable nanoscale interlayer properties. Phyllosilicates, natural and abundant layered clay minerals, have emerged as scalable and cost‐effective candidates.
Min A Kim +4 more
wiley +1 more source