Results 31 to 40 of about 36,744 (239)
Experimental and simulation efforts in the astrobiological exploration of exooceans [PDF]
, 2020 The icy satellites of Jupiter and Saturn are perhaps the most promising places in the Solar System regarding habitability. However, the potential habitable environments are hidden underneath km-thick ice shells.
Antunes, André +9 more
core +1 more source
Decreasing extents of Archean serpentinization contributed to the rise of an oxidized atmosphere
Nature Communications, 2021 Throughout the Archean, H2 generation via low-temperature ultramafic serpentinization likely helped prevent atmospheric O2 accumulation and continued until the abundance of ultramafic rocks diminished setting the stage for the Great Oxidation Event.
James Andrew M. Leong +2 more
doaj +1 more source
, 1979 The central issues in petrology have remained remarkably unchanged in the last 50 years. In igneous petrology, the focus is on understanding the nature and cause of diversity in igneous rocks: on identifying primary magma types and constraints on the ...
Stolper, Edward
core +1 more source
Записки Горного института, 2022 A comprehensive study of a 340 m thick lenticular-sheet body of ultramafic composition penetrated by structural well M-1 at a depth of about 2.2 km was accomplished.
Valeriy F. Smolkin +4 more
doaj +1 more source
Geosciences, 2016 The mineralogical indices the Quartz Index (QI), Carbonate Index (CI) and Mafic Index (MI) for ASTER multispectral thermal infrared (TIR) data were applied to various geological materials for regional lithological mapping on the Tibetan Plateau.
Yoshiki Ninomiya, Bihong Fu
doaj +1 more source
Environment International, 2019 The transformation of trace metals (TMs) in natural environmental systems has created significant concerns in recent decades. Ultramafic environments lead to potential risks to the agricultural products and, subsequently, to human health.
Meththika Vithanage +9 more
doaj +1 more source
Earth's Earliest Phaneritic Ultramafic Rocks: Mantle Slices or Crustal Cumulates?
Geochemistry, Geophysics, Geosystems, 2022 When plate tectonics initiated remains uncertain, partly because many signals interpreted as diagnostic of plate tectonics can be alternatively explained via hot stagnant‐lid tectonics.
Jiawei Zuo +10 more
doaj +1 more source
SHRIMP ion probe zircon geochronology and Sr and Nd isotope geochemistry for southern Longwood Range and Bluff Peninsula intrusive rocks of Southland, New Zealand [PDF]
, 2006 Permian–Jurassic ultramafic to felsic intrusive complexes at Bluff Peninsula and in the southern Longwood Range along the Southland coast represent a series of intraoceanic magmatic arcs with ages spanning a time interval of 110 m.y.
Aronson JL +15 more
core +2 more sources
Biodiversity of mycorrhizosphere bacteria associated to endemic Tristaniopsis species in New Caledonian serpentine soils [PDF]
, 2010 New Caledonian serpentine (ultramafic) outcrops are metal-rich soils, containing high levels of toxic heavy metals particularly the nickel (20 g.kg-1).
Domergue, Odile +6 more
core
Deep Underground Science and Engineering, EarlyView.The Great Dyke of Zimbabwe is notable for its rich platinum group metal deposits but poses significant geological and geotechnical challenges due to its complex rock types and structural features. Traditional pillar design methods are insufficient for addressing these complexities; the study suggests incorporating advanced techniques such as machine ...
Tawanda Zvarivadza +3 more
wiley +1 more source