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  • 1
    Online Resource
    Online Resource
    Monogenetic volcanism (2017)
    London : The Geological Society
    Details Availability
    Keywords: Volcanism ; Volcanism ; Electronic book ; Vulkanismus
    Description / Table of Contents: Source to surface model of monogenetic volcanism: a critical review /I. E. M. Smith and K. Németh --Phreatomagmatic maar-diatreme volcanoes and their incremental growth: a model /Volker Lorenz, Peter Suhr and Stefan Suhr --Morphometric analysis of scoria cones: the potential for inferring process from shape /Karen G. Bemis and Margot Ferencz --Differences and similarities between emplacement models of kimberlite and basaltic maar-diatreme volcanoes /Stephan Kurszlaukis and Volker Lorenz --The dynamics of a very large intra-plate continental basaltic volcanic province, the Newer Volcanics Province, SE Australia, and implications for other provinces /R. A. F. Cas, J. van Otterloo, T. N. Blaikie and J. van den Hove /Geology and geochemistry of Late Quaternary volcanism in northern Harrat Rahat, Kingdom of Saudi Arabia: implications for eruption dynamics, regional stratigraphy and magma evolution /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 --Monogenetic v. polygenetic kimberlite volcanism: in-depth examination of the Tango Extension Super Structure, Attawapiskat kimberlite field, Ontario, Canada /Alexandrina Fulop and Stephan Kurszlaukis --Structural evidence of enhanced active subsidence at the bottom of a maar: Rincón de Parangueo, México /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
    Type of Medium: Online Resource
    Pages: 1 Online-Ressource (374 Seiten) , Illustrationen
    Series Statement: Geological Society special publication no. 446
    URL: http://VH7QX3XE2P.search.serialssolutions.com/?V=1.0&L=VH7QX3XE2P&S=JCs&C=TC0001873740&T=marc&tab=BOOKS
    URL: https://sp.lyellcollection.org/content/446/1
    URL: https://doi.org/10.1144/SP446
    DOI: 10.1144/SP446
    DDC: 551.21
    Language: English
    Note: Includes bibliographical references and index
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  • 2
    Electronic Resource
    Electronic Resource
    Fragmentation, transport and deposition of a low-grade ignimbrite: The Citlaltépetl Ignimbrite, Eastern México (1999)
    Springer
    Bulletin of volcanology 60 (1999), S. 448-464 
    Details
    ISSN: 1432-0819
    Keywords: Key words Mexican volcanoes ; Citlaltépetl ; Ignimbrites ; Fluidization ; SFT ; Mechanisms of transport and emplacement
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract  The Citlaltépetl Ignimbrite records one of the largest explosive events during the Holocene activity of Citlaltépetl Volcano (Pico de Orizaba). Multiple pyroclastic flow units, a fall deposit, and some lahar units were emplaced between 8500–9000 y B.P. as a result of repetitive but discrete explosive events. The whole ignimbrite resulted from discrete fluctuations in eruptive intensity that decreased with time. The initial pyroclastic flow pulse was by far the most violent and widespread event, and its deposits show conspicuous variations in structure and texture that could be associated with different mechanisms of transport and emplacement. Subpopulation Sequential Fragmentation Transport (SFT) analyses were carried out in order to determine the physical mechanisms that selectively concentrate or remove particles in the moving flows. We suggest that lateral and temporal changes in the flow rheology, in which fluidization, yield strength, entrainment of atmospheric air, and sedimentation played a dominant role in flow propagation and emplacement, may imprint a unique signature in the grain-size spectra. The lowermost unit of the Citlaltépetl Ignimbrite can be envisaged by a model in which progressive aggradation near the vent became replaced by en masse emplacement farther outward.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004450050245
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    Paper (German National Licenses)
    Fulltext
  • 3
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    Geochemical analysis on lavas from Nevado de Toluca, Central Mexican Volcanic Belt and from the Cocos plate (2016)
    PANGAEA
    In:  Supplement to: Cai, Yue; LaGatta, Alexandra; Goldstein, Steven L; Langmuir, Charles H; Gómez-Tuena, Arturo; Martín-del Pozzo, Ana Lillian; Carrasco-Núñez, Gerardo (2014): Hafnium isotope evidence for slab melt contributions in the Central Mexican Volcanic Belt and implications for slab melting in hot and cold slab arcs. Chemical Geology, 377, 45-55, https://doi.org/10.1016/j.chemgeo.2014.04.002
    Details
    Publication Date: 2023-02-17
    Description: This study presents evidence that Quaternary frontal arc calc-alkaline lavas from Central Mexican Volcanic Belt (CMVB) contain contributions from partial melts of the subducting garnet-bearing eclogitic oceanic crust and sediment, based on chemical and Hf-Nd isotope data. The CMVB includes both calc-alkaline lavas with arc-type trace element patterns such as aqueous fluid mobile element enrichments and high field strength element depletions; and "high-Nb" alkaline lavas with trace element patterns similar to ocean island basalts. The two types of lavas are closely related geographically and temporally. Distinct from the high-Nb lavas, the calc-alkaline lavas show trends toward higher 176Hf/177Hf and 143Nd/144Nd ratios coupled with lower Lu/Hf. The high Hf-Nd isotope ratios fingerprint contributions of subducted basaltic ocean crust, while the correlation with low Lu/Hf indicates melting in the presence of residual garnet, which reflects conversion of the subducted oceanic crust to eclogite. Isotopic and chemical mass balance considerations indicate that the slab melts are ~ 80% basaltic oceanic crust and ~ 20% subducted sediment. The calc-alkaline lavas have higher SiO2 at a given Mg# compared to the high-Nb alkaline lavas, also reflecting melt contributions from the subducted slab. A survey of global arc lavas shows that calc-alkaline lavas with low Lu/Hf ratios, reflecting melting in the presence of residual garnet and preferential mobilization of Hf over Lu from the subducted slab, are generally associated with hot slab conditions. These include arcs where young (〈 30 Ma old) ocean crust is subducted (e.g. Mexican Volcanic Belt, Cascades, Austral Andes, Luzon, Setouchi), where slab tearing occurred and hot asthenospheric mantle could upwell through the slab window (e.g., western Aleutians, Sunda, southern Scotia), and where oblique or slow subduction leads to higher slab temperatures (e.g. Lesser Antilles, western Aleutians). In some of these hot slab arcs, where low Lu/Hf ratios are coupled with high Nd-Hf isotope ratios, slab melt contributions are dominated by partial melts from the subducted oceanic basalt (e.g., Mexican Volcanic Belt, Aleutians and Cascades). In other hot slab arcs, low Lu/Hf ratios are coupled with low Nd-Hf isotope ratios, reflecting slab contributions dominated by sediment melts (e.g. Setouchi, Lesser Antilles, Luzon, Sunda, and southern Scotia). Arcs associated with colder subducted oceanic crust (e.g. Izu-Bonin-Marianas, Tonga-Kermadec, central and northern Scotia) erupt lavas with high Lu/Hf along with high Hf-Nd isotope ratios, similar to mid-ocean ridge basalts, thus they lack the signature of residual garnet as well as significant slab melt input.
    Type: Dataset
    Format: application/zip, 3 datasets
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    DATA PANGAEA
  • 4
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    (Supplement EA2) Hafnium isotope ratios and major elements from Central Mexican Volcanic Belt (2016)
    PANGAEA
    Details
    Publication Date: 2023-07-10
    Keywords: 66-487; ASC-1; ASC24C; ASC43B; ASC44B; ASC45B; ASC47; ASC6B; ASC7C; ASWA5; ASWA9; C46; C64; CP22; CP35; CP40A; DRILL; Drilling/drill rig; Error; Event label; Glomar Challenger; Hafnium; Hafnium-176/Hafnium-177; International Generic Sample Number; Latitude of event; Leg66; Location; Longitude of event; LPO18; LPO2; LPO7; Lutetium; Magnesium; Neodymium; Neodymium-143/Neodymium-144 ratio; Niobium; North Pacific/TRENCH; PW115; PW141; PW293; PW296; Reproducibility; Sample comment; SCI30; SCI32; SCI33; SCI34; SCI35; SCI42; SCI43; Silicon dioxide; SPO34; SPO53; SPO55; SPO56; SPO57; SPO58B; SX1; Tantalum; Thorium; TP10C; TP13; Zirconium; ε-Hafnium; ε-Neodymium
    Type: Dataset
    Format: text/tab-separated-values, 782 data points
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    DATA PANGAEA
  • 5
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    (Supplement EA5) Hafnium and Neodymium isotope ratios of piston core sediments from the Cocos plate (2016)
    PANGAEA
    Details
    Publication Date: 2023-07-05
    Keywords: Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Error; Event label; Hafnium-176/Hafnium-177; International Generic Sample Number; Latitude of event; Longitude of event; Neodymium-143/Neodymium-144 ratio; PC; Piston corer; RC10; RC10-244; RC13; RC13-123; Reproducibility; Robert Conrad; VM18-329; ε-Hafnium; ε-Neodymium
    Type: Dataset
    Format: text/tab-separated-values, 58 data points
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    DATA PANGAEA
  • 6
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    (Supplement EA1) Elements, Neodymium and Hafnium analysis on lavas from Nevado de Toluca (2016)
    PANGAEA
    Details
    Publication Date: 2023-07-10
    Keywords: Aluminium oxide; AN160; AN179; AN182; AN81; Barium; Caesium; Calcium oxide; Cerium; Dysprosium; Error; Europium; Event label; Gadolinium; Hafnium; Hafnium-176/Hafnium-177; ICP-MS (Thermo Scientific, X-series); International Generic Sample Number; Iron oxide, FeO; Lanthanum; Latitude of event; Lead; Longitude of event; Lutetium; M32; M34; M69; Magnesium; Magnesium oxide; Manganese oxide; Multi-collector inductively coupled plasma mass spectrometer (MC-ICP-MS); Neodymium; Neodymium-143/Neodymium-144 ratio; Neodymium-143/Neodymium-144 ratio, error; Nevado de Toluca; Niobium; Phosphorus pentoxide; Potassium oxide; Praseodymium; RAM101; RAM215; RAM22; RAM452; RAM453; RAM592; Reproducibility; Rubidium; Samarium; Sample comment; Silicon dioxide; Sodium oxide; Strontium; Tantalum; Terbium; Thermal Ionization Mass Spectrometry (TIMS); Thorium; Titanium dioxide; Uranium; X-ray fluorescence spectroscopy (Siemens SRS-3000); Ytterbium; Yttrium; Zirconium; ε-Hafnium; ε-Neodymium
    Type: Dataset
    Format: text/tab-separated-values, 568 data points
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    DATA PANGAEA
  • 7
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    Evidence of a shallow magma reservoir below Los Humeros volcanic complex: Insights from the geochemistry of silicate melt inclusions (2018)
    Elsevier
    In:  Journal of South American Earth Sciences, 88 . pp. 446-458.
    Details
    Publication Date: 2021-01-08
    Description: Los Humeros volcanic complex (Eastern Trans Mexican Volcanic belt) is one of the three most important geothermal fields in Mexico and is currently producing electricity (ca. 90 MW). It is therefore pertinent to constrain the magma chamber characteristics, such as its depth, and the magmatic evolution of the complex in order to better define the superficial geothermal activity. In this paper we present the first geochemical data (major and trace elements) for 15 silicate melt inclusions and their five host rocks from Los Humeros volcanic complex. We constrained the evolution of the volcanic complex by coupling X-ray spectrometry, ICP-MS, microprobe, X-ray microtomography and NanoSIMS analyses together with thermodynamical modeling on both whole rocks and silicate melt inclusions. A ponding reservoir located within an interval betwwen 5 and 13 km at depth is evidenced by silicate melt inclusions entrapment pressures. This ponding depth's interval is in agreement with previous studies by thermal modeling, resistivity and geobaromatry done in the same area. The geothermal activity of Los Humeros volcanic area is expected to be the result of the cooling of the magma in the shallow chamber. A large geochemical variability, in less than 1 Ma, is demonstrated by trace and volatile element compositions evolution through time. Subduction contamination is expected into the mantle source with the highest contamination event at 69 Ka, during the second caldera event of Los Humeros volcanic complex.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1016/j.jsames.2018.09.017
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    OceanRep: Article in a Scientific Journal - peer-reviewed
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