Mantle-derived magmas and magmatic Ni-Cu-(PGE) deposits [PDF]
, 2005 Magmatic Fe-Ni-Cu ± platinum-group element (PGE) sulfide deposits form when mantle-derived mafic and ultramafic magmas become saturated in sulfide and segregate immiscible sulfide liquid, commonly following interaction with crustal rocks.
Arndt, Nicholas +2 more
core +2 more sources
Diversity and Distributions, Volume 31, Issue 1, January 2025.ABSTRACT Aim The capacity of cool refugia to protect cold‐adapted species against climate change may depend on both their initial climatic conditions and how quickly these change. We test how local climatic conditions influence mountain butterfly communities via their effects on colonisation and local extinction.
Guim Ursul +5 more
wiley +1 more source
Geological Journal, Volume 59, Issue 12, Page 3278-3295, December 2024.The Awash River basin is facing significant groundwater quality challenges. The intrinsic vulnerability of aquifers to pollution is determined by a new method that was developed by adding lineament density (LD) in the DRASTIC model. The highest vulnerability zones increased to 27% with the addition of land use/land‐cover and LD and coincided with ...
Tsnat Tsegay +4 more
wiley +1 more source
Biogenic processes in crystalline bedrock fractures indicated by carbon isotope signatures of secondary calcite [PDF]
, 2016 Peer ...
Karhu, Juha A. +3 more
core +1 more source
Geochemistry, Geophysics, Geosystems, Volume 25, Issue 9, September 2024.Abstract Deep fracture‐hosted fluids of Precambrian bedrock cratons are relatively stagnant over long time spans compared to near‐surface systems. However, episodic events, such as fracture reactivations, transgressions, and deglaciations, may introduce dilute water, replacing, and mixing with the deep continental brines, thereby sparking microbial ...
H. Drake +9 more
wiley +1 more source
Discriminating fluid source regions in orogenic gold deposits using B-isotopes [PDF]
, 2016 The genesis of orogenic gold deposits is commonly linked to hydrothermal ore fluids derived from metamorphic devolatilization reactions. However, there is considerable debate as to the ultimate source of these fluids and the metals they transport ...
Lambert-Smith, James +3 more
core +1 more source
Late Svecofennian leucogranites of southern Finland : Chronicles of an orogenic collapse [PDF]
, 2011 Leucogranite magmatism occurred in southern Finland during the later stages of the Paleoproterozoic Svecofennian orogeny. The leucogranites are considered to have formed from pre-existing crustal rocks that have undergone anatexis in the extensional ...
Kurhila, Matti
core
Tectonic significance of Late Precambrian calc-alkaline and alkaline magmatism in Saint Katherina Area, Southern Sinai, Egypt [PDF]
, 2007 Two magmatic rock suites are distinguished in the Late Precambrian basement of the Southern Sinai (NW Arabian-Nubian Shield, Egypt), namely (a) a calc-alkaline suite, and (b) an alkaline suite.
Kamal Azer, Mokhles
core +3 more sources
Archaean crustal evolution in eastern Finland : New geochronological and geochemical constraints from the Kuhmo terrain and the Nurmes belt [PDF]
, 2007 This thesis summarises the results of four original papers concerning U-Pb geochronology and geochemical evolution of Archaean rocks from the Kuhmo terrain and the Nurmes belt, eastern Finland.
Käpyaho, Asko
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Geological factors affecting on after-use of Finnish cut-over peatlands : with implications on the carbon accumulation [PDF]
, 2007 In Finland, peat harvesting sites are utilized down almost to the mineral soil. In this situation the properties of mineral subsoil are likely to have considerable influence on the suitability for the various after-use forms.
Picken, Päivi
core