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  • London : The Geological Society  (2)
  • Oxford University Press  (1)
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  • 1
    Call number: 9/M 07.0421(446)
    In: Geological Society special publication ; 446
    Type of Medium: Series available for loan
    Pages: 382 Seiten , Illustrationen, Karten, Diagramme
    ISBN: 9781786202765
    Series Statement: Special publication / Geological Society of London no. 446
    Classification:
    Geophysics
    Language: English
    Location: Reading room
    Branch Library: GFZ Library
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  • 2
    Keywords: volcanism ; volcanic systems ; small-scale volcanoes
    Description / Table of Contents: I. E. M. Smith and K. Németh: Source to surface model of monogenetic volcanism: a critical review / Geological Society, London, Special Publications, 446:1-28, first published on March 31, 2017, doi:10.1144/SP446.14 --- Volker Lorenz, Peter Suhr, and Stefan Suhr: Phreatomagmatic maar-diatreme volcanoes and their incremental growth: a model / Geological Society, London, Special Publications, 446:29-59, first published on September 27, 2016, doi:10.1144/SP446.4 --- Karen G. Bemis and Margot Ferencz: Morphometric analysis of scoria cones: the potential for inferring process from shape / Geological Society, London, Special Publications, 446:61-100, first published on January 17, 2017, doi:10.1144/SP446.9 --- Stephan Kurszlaukis and Volker Lorenz: Differences and similarities between emplacement models of kimberlite and basaltic maar-diatreme volcanoes / Geological Society, London, Special Publications, 446:101-122, first published on October 5, 2016, doi:10.1144/SP446.5 --- R. A. F. Cas, J. van Otterloo, T. N. Blaikie, and J. van den Hove: The dynamics of a very large intra-plate continental basaltic volcanic province, the Newer Volcanics Province, SE Australia, and implications for other provinces / Geological Society, London, Special Publications, 446:123-172, first published on November 7, 2016, doi:10.1144/SP446.8 --- H. Murcia, J. M. Lindsay, K. Németh, I. E. M. Smith, S. J. Cronin, M. R. H. Moufti, N. N. El-Masry, and S. Niedermann: Geology and geochemistry of Late Quaternary volcanism in northern Harrat Rahat, Kingdom of Saudi Arabia: implications for eruption dynamics, regional stratigraphy and magma evolution / Geological Society, London, Special Publications, 446:173-204, first published on September 30, 2016, doi:10.1144/SP446.2 --- Alexandrina Fulop and Stephan Kurszlaukis: Monogenetic v. polygenetic kimberlite volcanism: in-depth examination of the Tango Extension Super Structure, Attawapiskat kimberlite field, Ontario, Canada / Geological Society, London, Special Publications, 446:205-224, first published on September 23, 2016, doi:10.1144/SP446.7 --- José Jorge Aranda-Gómez, Mariano Cerca, Luis Rocha-Treviño, Jaime Jesús Carrera-Hernández, Gilles Levresse, Jesús Pacheco, Vsevolod Yutsis, Jorge Arturo Arzate-Flores, Elizabeth Chacón, and Hugo Beraldi-Campesi: Structural evidence of enhanced active subsidence at the bottom of a maar: Rincón de Parangueo, México / Geological Society, London, Special Publications, 446:225-254, first published on September 29, 2016, doi:10.1144/SP446.1 --- R. Saucedo, J. L. Macías, Y. Z. E. Ocampo-Díaz, W. Gómez-Villa, E. Rivera-Olguín, R. Castro-Govea, J. M. Sánchez-Núñez, P. W. Layer, J. R. Torres Hernández, and G. Carrasco-Núñez: Mixed magmatic–phreatomagmatic explosions during the formation of the Joya Honda maar, San Luis Potosí, Mexico / Geological Society, London, Special Publications, 446:255-279, first published on February 28, 2017, doi:10.1144/SP446.11 --- Román Alvarez, Fernando Corbo Camargo, Vsevolod V. Yutsis, and Jorge A. Arzate: A volcanic centre in Mexico's Pacific continental shelf / Geological Society, London, Special Publications, 446:281-293, first published on March 3, 2017, doi:10.1144/SP446.12 --- Román Alvarez, Fernando Corbo Camargo, and Vsevolod V. Yutsis: Geophysical modelling of Isla Isabel: a volcanic island on the Mexican continental margin / Geological Society, London, Special Publications, 446:295-310, first published on March 3, 2017, doi:10.1144/SP446.13 --- Walter Báez, Gerardo Carrasco Nuñez, Guido Giordano, José G. Viramonte, and Agostina Chiodi: Polycyclic scoria cones of the Antofagasta de la Sierra basin, Southern Puna plateau, Argentina / Geological Society, London, Special Publications, 446:311-336, first published on September 26, 2016, doi:10.1144/SP446.3 --- Guadalupe Maro and Pablo J. Caffe: Neogene monogenetic volcanism from the Northern Puna region: products and eruptive styles / Geological Society, London, Special Publications, 446:337-359, first published on September 26, 2016, doi:10.1144/SP446.6 --- C. Borrero, H. Murcia, J. Agustin-Flores, M. T. Arboleda, and A. M. Giraldo: Pyroclastic deposits of San Diego maar, central Colombia: an example of a silicic magma-related monogenetic eruption in a hard substrate / Geological Society, London, Special Publications, 446:361-374, first published on December 15, 2016, doi:10.1144/SP446.10
    Pages: Online-Ressource (382 Seiten) , Illustrationen, Diagramme, Karten
    ISBN: 9781786202765
    Language: English
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  • 3
    Publication Date: 2020-07-14
    Description: SUMMARY This study focuses in the analysis of the internal structure of the upper 3 km of Los Humeros (LH) caldera and the relation of electrical and hydrothermal anomalies. For this purpose, we measured, processed and interpreted 78 broad-band magnetotelluric (MT) soundings. We performed a 3-D inversion of the data set (ModEM) using all MT soundings, although only half of the available frequencies per sounding due to limited computed power. We also carried out the 2-D inversions (NLCG) of the invariant determinant along two orthogonal profiles (EW and NS) crossing the caldera structure; their comparison yields similar resistivity and structural models results. The resistivity modelling is complemented with the results of a joint 3-D inversion of an accurate gravity database of 720 stations, and total field aeromagnetic data (SGM) from the caldera crater. The combined results provide novel details about the structure of the shallow geothermal reservoir of the resurgence caldera complex hosting the active hydrothermal system. Density and resistivity models show the existence of a composed crater basin structure separated by an EW high-density structure; the northern basin is associated to the LH crater, whereas the southern basin associates to the emergent Los Potreros (LP) caldera basin. The magnetization model indicates that there is a common source for the magnetic volcanic products observed at the caldera surface, and that the LP fault is the more magnetized fault of the geothermal system. The propylic zoning under the geothermal field, which according to the MT model results has resistivities above ∼100 Ω-m, was extrapolated using this and additional criteria to obtain the distribution of other hypothetical propylitic zones of hydrothermal potential.
    Print ISSN: 0956-540X
    Electronic ISSN: 1365-246X
    Topics: Geosciences
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