يعرض 1 - 20 نتائج من 196 نتيجة بحث عن '"Detachment fold"', وقت الاستعلام: 0.59s تنقيح النتائج
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    المؤلفون: Pier Paolo G. Bruno, Aldo Vesnaver

    المساهمون: Bruno, Pier Paolo G., Vesnaver, Aldo

    المصدر: Frontiers in Earth Science, Vol 8 (2021)

    مصطلحات موضوعية: 010504 meteorology & atmospheric sciences, Lineament, Petrophysics, Inversion (geology), seismic tomography, aquifer characterisation, Q factor, 010502 geochemistry & geophysics, 01 natural sciences, seismic reflection 2D, Tectonics, Seismic tomography, This paper discusses a multivariate approach aimed at geophysical characterization of subsurface rocks for groundwater exploration in arid environments. We integrate several findings obtained from a single-source, single-sensor seismic profile with gravity data to detail the tectonic settings and characterize the subsurface, water-bearing formations of the Al Jaww Plain, one of the most important groundwater reserves of the United Arab Emirates. The seismic data have been acquired in the framework of the first EAGE Middle-East Bootcamp. Edge-detection techniques applied to the Bouguer anomaly map of the Al Jaww Plain allowed us to infer the presence of unreported ENE trending tectonic lineaments. The prestack depth migrated seismic image shows a clear and previously unreported east-verging thrust affecting seismic wave propagation and consistent with gravity data which was interpreted as an evidence of a detachment fold and thrust above the bottom of Fiqa Formation. Using the first-arrival picking from the common shot gathers, we tested a coupled tomographic inversion of P-wave velocity and Q factor which was aimed at achieving a qualitative characterization of rock petrophysical properties. K-means clustering was used to classify and map subsurface areas characterized by similar observations of P- and Q-wave velocity and therefore to outline shallow zones (<600 m) that are consistent with geophysical properties which are typical for water accumulations and within the reach of water groundwater exploration, General Earth and Planetary Sciences, lcsh:Q, Bouguer anomaly, lcsh:Science, Detachment fold, Petrology, K-means, Groundwater, Geology, 0105 earth and related environmental sciences

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    المساهمون: Geological Survey of Iran, Géosciences Montpellier, Institut national des sciences de l'Univers (INSU - CNRS)-Université de Montpellier (UM)-Université des Antilles (UA)-Centre National de la Recherche Scientifique (CNRS), Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology [Zürich] (ETH Zürich), Natl Acad Sci Armenia, Inst Geol Sci, Geological Institute [ETH Zürich], Department of Earth Sciences [Swiss Federal Institute of Technology - ETH Zürich] (D-ERDW), Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology [Zürich] (ETH Zürich)- Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology [Zürich] (ETH Zürich)

    المصدر: Journal of Asian Earth Sciences
    Journal of Asian Earth Sciences, Elsevier, 2021, 219, pp.104893. ⟨10.1016/j.jseaes.2021.104893⟩

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    المساهمون: Geological Survey of Iran, Géosciences Montpellier, Institut national des sciences de l'Univers (INSU - CNRS)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Université des Antilles (UA), Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology Zürich (ETH Zürich), Natl Acad Sci Armenia, Inst Geol Sci

    المصدر: ISSN: 1367-9120 ; Journal of Asian Earth Sciences ; https://hal.science/hal-03402665 ; Journal of Asian Earth Sciences, 2021, 219, pp.104893. ⟨10.1016/j.jseaes.2021.104893⟩.

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