Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Angelo Pisconti"'
Publikováno v:
Geochemistry, Geophysics, Geosystems, Vol 22, Iss 10, Pp n/a-n/a (2021)
Abstract Observations of seismic anisotropy just above the core‐mantle boundary are a powerful way to understand the dynamics of the lowermost mantle. Here we present models of seismic anisotropy in the lowermost mantle beneath Siberia based on new
Externí odkaz:
https://doaj.org/article/6de663bfec6f4f479b968d0d64582dc4
Mineralogy, fabric and deformation domains in D″ across the southwestern border of the African LLSVP
Publikováno v:
Pisconti, A, Creasy, N, Wookey, J M, Long, M D & Thomas, C 2023, ' Mineralogy, fabric and deformation domains in D′′ across the southwestern border of the African LLSVP ', Geophysical Journal International, vol. 232, no. 1, pp. 705-724 . https://doi.org/10.1093/gji/ggac359
SUMMARYRecent advances in seismic anisotropy studies that jointly use reflections and shear wave splitting have proven to place tight constraints on the plausible anisotropic and deformation scenarios in the D″ region. We apply this novel methodolo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2d8c555ca17b2df65c5f3a43aa62f137
https://doi.org/10.1093/gji/ggac359
https://doi.org/10.1093/gji/ggac359
Publikováno v:
Geochemistry, Geophysics, Geosystems. 22
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::112ce72e2128bccb6cc5635398d322df
https://doi.org/10.1029/2021gc009924
https://doi.org/10.1029/2021gc009924
Publikováno v:
Geophysical Journal International. 219:S152-S166
SUMMARY Iceland represents one of the most well-known examples of hotspot volcanism, but the details of how surface volcanism connects to geodynamic processes in the deep mantle remain poorly understood. Recent work has identified evidence for an ult
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d351729fd13d34940280509e4cec17cc
https://doi.org/10.1093/gji/ggz312
https://doi.org/10.1093/gji/ggz312
Publikováno v:
Geophysical Journal International
Geophysical Journal International, Oxford University Press (OUP), 2019, 217 (2), pp.766-783. ⟨10.1093/gji/ggz049⟩
Creasy, N, Pisconti, A, Long, M D, Thomas, C & Wookey, J 2019, ' Constraining lowermost mantle anisotropy with body waves : A synthetic modeling study ', Geophysical Journal International, vol. 217, no. 2, pp. 766-783 . https://doi.org/10.1093/gji/ggz049
Geophysical Journal International, Oxford University Press (OUP), 2019, 217 (2), pp.766-783. ⟨10.1093/gji/ggz049⟩
Creasy, N, Pisconti, A, Long, M D, Thomas, C & Wookey, J 2019, ' Constraining lowermost mantle anisotropy with body waves : A synthetic modeling study ', Geophysical Journal International, vol. 217, no. 2, pp. 766-783 . https://doi.org/10.1093/gji/ggz049
Different mechanisms have been proposed as explanations for seismic anisotropy at the base of the mantle, including crystallographic preferred orientation of various minerals (bridgmanite, post-perovskite, and ferropericlase) and shape preferred orie
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9f129237d7732ed9000acaf72b30a377
https://hal.archives-ouvertes.fr/hal-02162789
https://hal.archives-ouvertes.fr/hal-02162789
Publikováno v:
Geophysical Journal International
Geophysical Journal International, Oxford University Press (OUP), 2019, 220 (1), pp.59-70. ⟨10.1093/gji/ggz430⟩
Geophysical Journal International, Oxford University Press (OUP), 2019, 220 (1), pp.59-70. ⟨10.1093/gji/ggz430⟩
SUMMARYKnowledge of the position of lithological boundaries is key information for a realistic interpretation of geological settings. Especially in the mining environment, the exact knowledge of geometrical boundaries and characteristics of rock stru
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cee8dc9ae6a180cffd5cda05c470d052
https://hal.archives-ouvertes.fr/hal-02441789/file/Open_Access_Version.pdf
https://hal.archives-ouvertes.fr/hal-02441789/file/Open_Access_Version.pdf
Publikováno v:
Geophysical Journal International. 201:1370-1382
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b92a05e8c87ac955e88e9a8cdac3eab1
https://doi.org/10.1093/gji/ggv055
https://doi.org/10.1093/gji/ggv055
Publikováno v:
Journal of Geophysical Research: Solid Earth
Pisconti, A, Thomas, C & Wookey, J 2019, ' Discriminating Between Causes of D″ Anisotropy Using Reflections and Splitting Measurements for a Single Path ', Journal of Geophysical Research: Solid Earth, vol. 124, no. 5, pp. 4811-4830 . https://doi.org/10.1029/2018JB016993
Pisconti, A, Thomas, C & Wookey, J 2019, ' Discriminating Between Causes of D″ Anisotropy Using Reflections and Splitting Measurements for a Single Path ', Journal of Geophysical Research: Solid Earth, vol. 124, no. 5, pp. 4811-4830 . https://doi.org/10.1029/2018JB016993
Knowledge of deep mantle deformation is based on seismic anisotropy: the variation of seismic wave speed and polarization with direction. Measuring this directional dependency requires azimuthal seismic coverage at D″ depth—the bottom few hundred
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f076a1099c9e5a3f499d3391ddc4aba5