منابع مشابه
Organic protomolecule assembly in igneous minerals.
CH stretching bands, nu(CH), in the infrared spectrum of single crystals of nominally high purity, of laboratory-grown MgO, and of natural upper mantle olivine, provide an "organic" signature that closely resembles the symmetrical and asymmetrical C--H stretching modes of aliphatic -CH(2) units. The nu(CH) bands indicate that H(2)O and CO(2), dissolved in the matrix of these minerals, converted...
متن کاملA review of the stable-isotope geochemistry of sulfate minerals in selected igneous environments and related hydrothermal systems
The stable-isotope geochemistry of sulfate minerals that form principally in I-type igneous rocks and in the various related hydrothermal systems that develop from their magmas and evolved fluids is reviewed with respect to the degree of approach to isotope equilibrium between minerals and their parental aqueous species. Examples illustrate classical stable-isotope systematics and principles of...
متن کاملTrace Element Characteristics of Minerals in the Apollo 14 High-al Basalts: Implications for an Igneous versus an Impact Origin
Introduction: Previous trace element and isotopic analyses of the Apollo 14 high-Al basalts, suggest that these samples represent the earliest stages of basaltic volcanism on the Moon and that they are not random samples from the lunar regolith [1,2,3,4,5,6,7]. One of the primary goals of this work is to determine if these small, fragmented samples are the result of igneous or impact processes....
متن کاملIn situ enrichment of ocean crust microbes on igneous minerals and glasses using an osmotic flow‐through device
[1] The Integrated Ocean Drilling Program (IODP) Hole 1301A on the eastern flank of Juan de Fuca Ridge was used in the first long‐term deployment of microbial enrichment flow cells using osmotically driven pumps in a subseafloor borehole. Three novel osmotically driven colonization systems with unidirectional flow were deployed in the borehole and incubated for 4 years to determine the microbia...
متن کاملPetrological Evolution of the Upper Mantle Beneath the Southern Sanandaj-Sirjan Zone: Evidence from Kuhshah Peridotite Massif, Southeast Iran
The Kuhshah ultramafic complex is located in the south-east of Sanandaj-Sirjan metamorphic zone, near the probable remnants of Neotethys plate in Iran. It consists of highly depleted harzburgites, dunites, chromitite bands and altered gabbros. The ultramafic parts have been intruded by numerous clinopyroxenite dykes and veins. In the harzburgites, there are different generations of olivine, ort...
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ژورنال
عنوان ژورنال: Geologija
سال: 1995
ISSN: 0016-7789,1854-620X
DOI: 10.5474/geologija.1995.011