Mostrando 9,261 - 9,280 Resultados de 10,994 Para Buscar '"rock ', tiempo de consulta: 0.31s Limitar resultados
  1. 9261
    por Frezzotti, Maria Luce
    Publicado 2019
    “…At subduction zones, most diamonds form by carbon saturation in hydrous fluids released from lithospheric plates on equilibration with mantle rocks. Although organic molecules are predicted among dissolved species which are the source for carbon in diamonds, their occurrence is not demonstrated in nature, and the physical model for crustal diamond formation is debated. …”
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  2. 9262
    “…Using state-of-the-art numerical approaches, we report, for the first time, that materials delivered from Mars to its moons are physically and chemically different from the Martian meteorites, which are all igneous rocks with a limited range of ages. We show that Mars ejecta mixed in the regolith of its moons potentially covers all its geological eras and consists of all types of rocks, from sedimentary to igneous. …”
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  3. 9263
  4. 9264
  5. 9265
    “…The dynamics of continental subduction is largely controlled by the rheological properties of rocks involved along the subduction channel. Serpentinites have low viscosity at geological strain rates. …”
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  6. 9266
    “…Yet the origins of these sources are largely unconstrained. Hydration of mantle rocks, or serpentinization, is widely recognized to produce H(2) and favour the abiotic genesis of CH(4) in shallow settings. …”
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  7. 9267
  8. 9268
    “…These data reveal that the first stable, evolved rocks in the Yilgarn Craton formed during an influx of juvenile (recently extracted from the mantle) magmatic source material into the craton. …”
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  9. 9269
    por Berndt, Jasper, Klemme, Stephan
    Publicado 2022
    “…Carbonatites are rare but worldwide occurring igneous rocks and their genesis remains enigmatic. Field studies show a close spatial but controversially debated genetic relationship with alkaline silicate rocks, and petrological and experimental studies indicate liquid immiscibility from mantle-derived magmas being one viable model for the generation of carbonatites. …”
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  10. 9270
    “…Infants in the intervention group received massage for 15–20 minutes once during the day and once at night before sleep, while infants in the control group were rocked for 15–25 minutes when the symptoms of colic appeared. …”
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  11. 9271
    por Tarling, D H
    Publicado 1983
    “…In fact, real comprehension of the magnetic processes that have occurred in rocks and other types of material over several thousands or many millions of years is still extremely difficult to assess and measure. …”
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  12. 9272
  13. 9273
  14. 9274
    por Lal, V. K., Panday, K. K., Kapoor, M. L.
    Publicado 1988
    “…Shilajit, exuding from the rocks of mountains has been proved to be basically derived from the latex of cactus like Euphorbia species. …”
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  15. 9275
    “…Studying the mechanical behavior of rocks under real-time high-temperature conditions is of great significance for the development of energy caverns, nuclear waste disposal projects, and tunneling engineering. …”
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  16. 9276
    “…Permeability is a key parameter for investigating the flow ability of sedimentary rocks. The conventional model for calculating permeability is derived from Darcy's law, which is valid only for continuum flow in porous rocks. …”
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  17. 9277
    “…Magnetite (Fe(3)O(4)) is an important magnetic mineral to Earth scientists, as it carries the dominant magnetic signature in rocks, and the understanding of its magnetic recording fidelity provides a critical tool in the field of palaeomagnetism. …”
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  18. 9278
    “…Here we present zinc isotope and abundance data for lunar crustal rocks to constrain the abundance of volatiles during the final stages of lunar differentiation. …”
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  19. 9279
    “…The conducted research has demonstrated that the activity concentration of (222)Rn dissolved in shallow circulation groundwaters in the Sudetes depends chiefly on the amount of radon, which after being released as gas from reservoir rocks is dissolved in waters flowing through these rocks. …”
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  20. 9280
    “…U-Pb age data of the hybrid rocks were obtained by in-situ LA-MC-ICP-MS analysis of zircon. …”
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