Results 131 to 140 of about 11,823 (188)
The genesis of ultramafic lamprophyres
International Kimberlite Conference Extended Abstracts: 2003, 2019 openaire +2 more sources
Ultramafic Alteration and the Cooling of Earth and Mars
This thesis deals with the influence of `ultramafic' rocks over the climate of planets. Ultramafic rocks, rich in Mg and Fe, are the most common rocks on Earth but exist primarily in the mantle and rarely outcrop on the surface.
Murray, Joshua
core
The origin of glass in ultramafic xenoliths
International Kimberlite Conference Extended Abstracts: 1982, 2019 openaire +2 more sources
Ecological Entomology, 1999 Summary 1. Concentrations of magnesium, manganese, chromium, and cadmium were measured in Coleoptera, Diptera, Hemiptera, and Hymenoptera captured at ultramafic and non‐ultramafic sites in the Highlands of Scotland. 2.
Keith R Skene
exaly +3 more sources
Plant–pollinator interactions in ultramafic and non-ultramafic environments in New Caledonia
Botany Letters, 2023 Edaphic conditions operate major environmental filtering on plant assemblages and their community structure. Soils derived from ultramafic outcrops (i.e.
Zakardjian, Marie +3 more
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Earth and Planetary Science LettersSeveral ultramafic enclaves found within the Eoarchean Itsaq Gneiss Complex (IGC) in southern West Greenland have previously been interpreted as representing mantle relicts.
Lingyu Zhang, Kristoffer Szilas
exaly +2 more sources
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2007
The earth is divided into three layers: the crust, the mantle, and the core. There are two principle regions within the crust: continents and ocean basins. The rocks that make up these layers differ from one another in chemical composition and density.
Earl B. Alexander +3 more
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The earth is divided into three layers: the crust, the mantle, and the core. There are two principle regions within the crust: continents and ocean basins. The rocks that make up these layers differ from one another in chemical composition and density.
Earl B. Alexander +3 more
openaire +1 more source
Geochimica et Cosmochimica Acta, 1953
Abstract Quantitative spectrochemical determinations of potassium in 50 specimens of ultramafic rock confirm the preliminary observation ( Ahrens , Pinson and Kearns , 1952) that the abundance of potassium in this rock type is much lower than has usually been assumed.
W Holyk, L.H Ahrens
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Abstract Quantitative spectrochemical determinations of potassium in 50 specimens of ultramafic rock confirm the preliminary observation ( Ahrens , Pinson and Kearns , 1952) that the abundance of potassium in this rock type is much lower than has usually been assumed.
W Holyk, L.H Ahrens
openaire +1 more source
Growth and Reproduction of Earthworms in Ultramafic Soils
Archives of Environmental Contamination and Toxicology, 2007Ultramafic soils are characterized by high concentrations of heavy metals of natural origin-such as chromium, cobalt, manganese, and nickel-as well as a shortage of primary nutrients. This can result in extremely disadvantageous living conditions for all soil-dwelling organisms.
R, Maleri +3 more
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