Paleoecology of Late Quaternary Deposits in Chiloe Continental, Chile
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To Late-Holocene Explosive Rhyolitic Eruptions from Chaitén Volcano, Chile Andean Geology, Vol
Andean Geology ISSN: 0718-7092 [email protected] Servicio Nacional de Geología y Minería Chile Watt, Sebastian F.L.; Pyle, David M.; Mather, Tamsin A. Evidence of mid- to late-Holocene explosive rhyolitic eruptions from Chaitén Volcano, Chile Andean Geology, vol. 40, núm. 2, mayo, 2013, pp. 216-226 Servicio Nacional de Geología y Minería Santiago, Chile Available in: http://www.redalyc.org/articulo.oa?id=173927491002 How to cite Complete issue Scientific Information System More information about this article Network of Scientific Journals from Latin America, the Caribbean, Spain and Portugal Journal's homepage in redalyc.org Non-profit academic project, developed under the open access initiative Andean Geology 40 (2): 216-226. May, 2013 Andean Geology doi: 10.5027/andgeoV40n2-a02 formerly Revista Geológica de Chile www.andeangeology.cl Evidence of mid- to late-Holocene explosive rhyolitic eruptions from Chaitén Volcano, Chile Sebastian F.L. Watt1, 2, David M. Pyle1, Tamsin A. Mather1 1 Department of Earth Sciences, University of Oxford, South Parks Road, Oxford OX1 3AN, U.K. [email protected]; [email protected]; [email protected] 2 National Oceanography Centre, Southampton, University of Southampton Waterfront Campus, European Way, Southampton SO14 3ZH, U.K. ABSTRACT. The 2008 eruption of Chaitén Volcano was widely cited as the first activity at the volcano for over 9000 years. However, we have identified evidence from proximal pyroclastic deposits for three additional explosive eruptions of Chaitén within the past 5000 years. Chaitén has therefore produced at least five explosive eruptions in the Holocene, making it among the most active volcanoes, in terms of explosive output, in the southern part of the Andean Southern Volcanic Zone. -
To Late-Holocene Explosive Rhyolitic Eruptions from Chaitén Volcano, Chile
Andean Geology 40 (2): 216-226. May, 2013 Andean Geology doi: 10.5027/andgeoV40n2-a02 formerly Revista Geológica de Chile www.andeangeology.cl Evidence of mid- to late-Holocene explosive rhyolitic eruptions from Chaitén Volcano, Chile Sebastian F.L. Watt1, 2, David M. Pyle1, Tamsin A. Mather1 1 Department of Earth Sciences, University of Oxford, South Parks Road, Oxford OX1 3AN, U.K. [email protected]; [email protected]; [email protected] 2 National Oceanography Centre, Southampton, University of Southampton Waterfront Campus, European Way, Southampton SO14 3ZH, U.K. ABSTRACT. The 2008 eruption of Chaitén Volcano was widely cited as the first activity at the volcano for over 9000 years. However, we have identified evidence from proximal pyroclastic deposits for three additional explosive eruptions of Chaitén within the past 5000 years. Chaitén has therefore produced at least five explosive eruptions in the Holocene, making it among the most active volcanoes, in terms of explosive output, in the southern part of the Andean Southern Volcanic Zone. All of the five identified Holocene explosive eruptions produced homogeneous high-silica rhyolite, with near identical compositions. Based on our pyroclastic sequence, we suggest that the largest-volume Holocene eruption of Chaitén occurred at ~4.95 ka, and we correlate this with the Mic2 deposit, which was previously thought to originate from the nearby Michinmahuida Volcano. Keywords: Chaitén Volcano, Andean southern volcanic zone, Holocene tephra stratigraphy, Rhyolite, Explosive volcanism. RESUMEN. Evidencia de erupciones riolíticas del Holoceno medio a tardío del volcán Chaitén, Chile. La erupción del volcán Chaitén en el año 2008 ha sido mencionada ampliamente como la primera actividad de este en los últimos 9 mil años. -
University of Groningen Fen Mires with Cushion Plants in Bale
University of Groningen Fen Mires with cushion plants in Bale Mountains, Ethiopia Dullo, B.W.; Grootjans, A. P.; Roelofs, J.G.M; Senbeta, A.F.; Fritz, C. Published in: Mires and Peat IMPORTANT NOTE: You are advised to consult the publisher's version (publisher's PDF) if you wish to cite from it. Please check the document version below. Document Version Publisher's PDF, also known as Version of record Publication date: 2015 Link to publication in University of Groningen/UMCG research database Citation for published version (APA): Dullo, B. W., Grootjans, A. P., Roelofs, J. G. M., Senbeta, A. F., & Fritz, C. (2015). Fen Mires with cushion plants in Bale Mountains, Ethiopia. Mires and Peat, 15, 1-10. [UNSP 07]. http://mires-and- peat.net/pages/volumes/map15/map1507.php Copyright Other than for strictly personal use, it is not permitted to download or to forward/distribute the text or part of it without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license (like Creative Commons). The publication may also be distributed here under the terms of Article 25fa of the Dutch Copyright Act, indicated by the “Taverne” license. More information can be found on the University of Groningen website: https://www.rug.nl/library/open-access/self-archiving-pure/taverne- amendment. Take-down policy If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim. Downloaded from the University of Groningen/UMCG research database (Pure): http://www.rug.nl/research/portal. -
Boron and Other Trace Element Constraints on the Slab-Derived Component in Quaternary Volcanic Rocks from the Southern Volcanic Zone of the Andes
Geochemical Journal, Vol. 47, pp. 185 to 199, 2013 Boron and other trace element constraints on the slab-derived component in Quaternary volcanic rocks from the Southern Volcanic Zone of the Andes HIRONAO SHINJOE,1* YUJI ORIHASHI,2 JOSÉ A. NARANJO,3 DAIJI HIRATA,4 TOSHIAKI HASENAKA,5 TAKAAKI FUKUOKA,6 TAKASHI SANO7 and RYO ANMA8 1Tokyo Keizai University, Japan 2Earthquake Research Institute, The University of Tokyo, Japan 3Servicio Nacional de Geología y Minería, Chile 4Kanagawa Prefectural Museum of Natural History, Japan 5Department of Earth and Environmental Sciences, Graduate School of Science and Technology, Kumamoto University, Japan 6Department of Environment Systems, Faculty of Geo-environmental Science, Rissho University, Japan 7Department of Geology and Paleontology, National Museum of Nature and Science, Japan 8Integrative Environmental Sciences, Graduate School of Life and Environmental Sciences, Tsukuba University, Japan (Received April 18, 2012; Accepted December 25, 2012) We present a dataset for boron and other trace element contents obtained from samples from 13 volcanoes distributed along the Quaternary volcanic front of the Southern Volcanic Zone (SVZ) of the Chilean Andes. The dataset shows con- straints on the nature of slab-derived component to mantle source. Analyzed samples show large negative Nb and Ta anomalies, and enrichment of alkaline earth elements and Pb, which are features of typical island arc volcanic rocks. Boron contents of SVZ volcanic rocks range 2.3–125.5 ppm, exhibiting marked enrichment relative to N-MORB and OIB. Both the boron contents and B/Nb ratios of the volcanic rocks increase from the southern SVZ (SSVZ) to central SVZ (CSVZ). Fluid mobile/immobile element ratios (B/Nb, Ba/Nb, Pb/Nb, and K/Nb) are used to examine slab-derived com- ponent to mantle source. -
Along Arc Petrochemical Variations in the Southernmost Andean SVZ (43.5-46°S): Implications for Magma Genesis
O EOL GIC G A D D A E D C E I H C I L E O S F u n 2 d 6 la serena octubre 2015 ada en 19 Along Arc Petrochemical Variations in the Southernmost Andean SVZ (43.5-46°S): Implications for Magma Genesis Charles R Stern* Department of Geological Sciences, University of Colorado, Boulder, Colorado 80309-0399, USA José Antonio Naranjo SERNAGEOMIN, Av. Santa María 0104, Santiago, Chile *Contact email: [email protected] Abstract. The southernmost Andean SVZ (43.5-46°S) (Sellés et al., 2004) further to the north. Among the smaller consists of six stratovolcanoes (Yanteles, Melimoyu, MEC, the Puyuhuapi group are HA type basalts (Fig. 2; Mentolat, Macá, Cay, Hudson). Hudson and Melimoyu are Lopéz et al. 1995a). In contrast, the Palena group just to high-K (K2O>1 wt% at 50 wt% SiO2), high incompatible the north of are LA type basalts (Fig. 2; Watt et al., 2013), element abundance (HA) types. Macá and Cay are low-K, as are all other MEC cones further to the south in the low incompatible element abundance (LA) centers, while Mentolat has very low K, Rb and other incompatible SSVZ. This paper addresses these regional variations in element contents (VLA), similar to Huequi, Calbuco and magma types along and across the SSVZ arc. Nevados de Longaví further north. Such differences have been attributed to differences in degree of mantle partial melting due to variability in the extent of contamination of the mantle source region by hydrous fluids and/or melts derived from subducted oceanic lithosphere, possibly as a result in down-dip temperature changes at the top of the subducted slab. -
Recent Glacier Variations on Mount Melimoyu (44°50'S-72°51'W), Chilean Patagonia, Using Sentinel-2 Data
See discussions, stats, and author profiles for this publication at: https://www.researchgate.net/publication/329581594 Recent glacier variations on Mount Melimoyu (44°50'S-72°51'W), Chilean Patagonia, using Sentinel-2 data Article in Geocarto International · December 2018 DOI: 10.1080/10106049.2018.1557262 CITATIONS READS 2 300 6 authors, including: Filipe Idalino Kátia Kellem da Rosa Universidade Federal do Rio Grande do Sul Universidade Federal do Rio Grande do Sul 9 PUBLICATIONS 3 CITATIONS 97 PUBLICATIONS 129 CITATIONS SEE PROFILE SEE PROFILE Francisco A. Ferrando University of Chile 39 PUBLICATIONS 191 CITATIONS SEE PROFILE Some of the authors of this publication are also working on these related projects: Centro Polar e Climatico View project Remote sensing of grassland ecosystems View project All content following this page was uploaded by Filipe Idalino on 15 February 2019. The user has requested enhancement of the downloaded file. Geocarto International ISSN: 1010-6049 (Print) 1752-0762 (Online) Journal homepage: https://www.tandfonline.com/loi/tgei20 Recent glacier variations on Mount Melimoyu (44°50'S-72°51'W), Chilean Patagonia, using Sentinel-2 data Filipe Daros Idalino, Kátia Kellem da Rosa, Francisco Ferrando Acuña, Bijeesh Kozhikkodan Veettil, Jefferson Cardia Simões & Enoil Souza Jr To cite this article: Filipe Daros Idalino, Kátia Kellem da Rosa, Francisco Ferrando Acuña, Bijeesh Kozhikkodan Veettil, Jefferson Cardia Simões & Enoil Souza Jr (2018): Recent glacier variations on Mount Melimoyu (44°50'S-72°51'W), Chilean Patagonia, using Sentinel-2 data, Geocarto International, DOI: 10.1080/10106049.2018.1557262 To link to this article: https://doi.org/10.1080/10106049.2018.1557262 Accepted author version posted online: 11 Dec 2018. -
Biogeography of the Monocotyledon Astelioid Clade (Asparagales): a History of Long-Distance Dispersal and Diversification with Emerging Habitats
Zurich Open Repository and Archive University of Zurich Main Library Strickhofstrasse 39 CH-8057 Zurich www.zora.uzh.ch Year: 2021 Biogeography of the monocotyledon astelioid clade (Asparagales): A history of long-distance dispersal and diversification with emerging habitats Birch, Joanne L ; Kocyan, Alexander Abstract: The astelioid families (Asteliaceae, Blandfordiaceae, Boryaceae, Hypoxidaceae, and Lanari- aceae) have centers of diversity in Australasia and temperate Africa, with secondary centers of diversity in Afromontane Africa, Asia, and Pacific Islands. The global distribution of these families makes this an excellent lineage to test if current distribution patterns are the result of vicariance or long-distance dispersal and to evaluate the roles of tertiary climatic and geological drivers in lineage diversification. Sequence data were generated from five chloroplast regions (petL-psbE, rbcL, rps16-trnK, trnL-trnLF, trnS-trnSG) for 104 ingroup species sampled across global diversity. The astelioid phylogeny was inferred using maximum parsimony, maximum likelihood, and Bayesian inference methods. Divergence dates were estimated with a relaxed clock applied in BEAST. Ancestral ranges were reconstructed in ’BioGeoBEARS’ applying the corrected Akaike information criterion to test for the best-fit biogeographic model. Diver- sification rates were estimated in Bayesian Analysis of Macroevolutionary Mixtures [BAMM]. Astelioid relationships were inferred as Boryaceae(Blandfordiaceae(Asteliaceae(Hypoxidaceae plus Lanariaceae))). The crown astelioid node was dated to the Late Cretaceous (75.2 million years; 95% highest posterior densities interval 61.0-90.0 million years) with an inferred Eastern Gondwanan origin. However, aste- lioid speciation events have not been shaped by Gondwanan vicariance. Rather long-distance dispersal since the Eocene is inferred to account for current distributions. -
Literaturverzeichnis
Literaturverzeichnis Abaimov, A.P., 2010: Geographical Distribution and Ackerly, D.D., 2009: Evolution, origin and age of Genetics of Siberian Larch Species. In Osawa, A., line ages in the Californian and Mediterranean flo- Zyryanova, O.A., Matsuura, Y., Kajimoto, T. & ras. Journal of Biogeography 36, 1221–1233. Wein, R.W. (eds.), Permafrost Ecosystems. Sibe- Acocks, J.P.H., 1988: Veld Types of South Africa. 3rd rian Larch Forests. Ecological Studies 209, 41–58. Edition. Botanical Research Institute, Pretoria, Abbadie, L., Gignoux, J., Le Roux, X. & Lepage, M. 146 pp. (eds.), 2006: Lamto. Structure, Functioning, and Adam, P., 1990: Saltmarsh Ecology. Cambridge Uni- Dynamics of a Savanna Ecosystem. Ecological Stu- versity Press. Cambridge, 461 pp. dies 179, 415 pp. Adam, P., 1994: Australian Rainforests. Oxford Bio- Abbott, R.J. & Brochmann, C., 2003: History and geography Series No. 6 (Oxford University Press), evolution of the arctic flora: in the footsteps of Eric 308 pp. Hultén. Molecular Ecology 12, 299–313. Adam, P., 1994: Saltmarsh and mangrove. In Groves, Abbott, R.J. & Comes, H.P., 2004: Evolution in the R.H. (ed.), Australian Vegetation. 2nd Edition. Arctic: a phylogeographic analysis of the circu- Cambridge University Press, Melbourne, pp. marctic plant Saxifraga oppositifolia (Purple Saxi- 395–435. frage). New Phytologist 161, 211–224. Adame, M.F., Neil, D., Wright, S.F. & Lovelock, C.E., Abbott, R.J., Chapman, H.M., Crawford, R.M.M. & 2010: Sedimentation within and among mangrove Forbes, D.G., 1995: Molecular diversity and deri- forests along a gradient of geomorphological set- vations of populations of Silene acaulis and Saxi- tings. -
Pdf/17/3/766/5319384/766.Pdf 766 by Guest on 28 September 2021 Research Paper
Research Paper THEMED ISSUE: Subduction Top to Bottom 2 GEOSPHERE Secular variations of magma source compositions in the North Patagonian batholith from the Jurassic to Tertiary: GEOSPHERE, v. 17, no. 3 Was mélange melting involved? https://doi.org/10.1130/GES02338.1 Antonio Castro1, Carmen Rodriguez2, Carlos Fernández3, Eugenio Aragón4, Manuel Francisco Pereira5, and José Francisco Molina6 12 figures; 1 table; 1 set of supplemental files 1Instituto Andaluz de Ciencias de la Tierra (IACT), Consejo Superior de Investigaciones Científicas–Universidad de Granada (CSIC-UGR), 18100 Armilla, Granada, Spain 2Geosciences Barcelona (formerly ICTJA), Consejo Superior de Investigaciones Científicas (CSIC), 08028 Barcelona, Spain 3 CORRESPONDENCE: Departamento de Ciencias de la Tierra, Universidad de Huelva, 21007 Huelva, Spain 4 [email protected] Facultad de Ciencias Naturales y Museo, Universidad Nacional de la Plata, B1900 La Plata, Buenos Aires, Argentina 5Instituto de Ciências da Terra (ICT), Departamento de Geociências, Escola de Ciências e Tecnologia (ECT), Universidade de Évora, 7000-670 Évora, Portugal 6Departamento de Mineralogía y Petrología, Universidad de Granada, Campus Univeristario de Fuentenueva, 18071 Granada, Spain CITATION: Castro, A., Rodriguez, C., Fernández, C., Aragón, E., Pereira, M.F., and Molina, J.F., 2021, Secular variations of magma source compositions ABSTRACT subduction of lithosphere is, directly or indirectly, the triggering process for in the North Patagonian batholith from the Jurassic to Tertiary: Was mélange melting involved?: Geo- magma generation. However, fundamental issues like the source of magmas sphere, v. 17, no. 3, p. 766–785, https://doi.org/10.1130 This study of Sr-Nd initial isotopic ratios of plutons from the North Patago- and the locus of melting, mantle or crust, still remain debated. -
Informe De Funcionamiento Red Nacional De Vigilancia Volcánica Primer Informe Trimestral 2017
INFORME DE FUNCIONAMIENTO RED NACIONAL DE VIGILANCIA VOLCÁNICA PRIMER INFORME TRIMESTRAL 2017 Servicio Nacional de Geología y Minería Mayo de 2017 TABLA DE CONTENIDOS 1. ANTECEDENTES GENERALES ........................................................................................ 2 2. RESULTADOS 2016 DEL PROGRAMA RNVV .................................................................. 3 2.1. CONSOLIDACIÓN Y OPERACIÓN DE LA RED DE MONITOREO .................................................. 3 2.2. ADECUACIÓN Y READECUACIÓN DE ESTACIONES OVDAS ..................................................... 3 2.3. ACTIVIDADES DE INVESTIGACIONES EN MONITOREO VOLCÁNICO ............................................ 3 2.4. MUESTREOS GEOQUÍMICOS, MEDIDAS DE GASES, CAMPAÑAS DE MEDICIÓN DE GPS PORTÁTILES OVDAS Y OTROS .................................................................................................... 4 2.5. MANTENIMIENTO CORRECTIVO Y PREVENTIVO ...................................................................... 4 2.6. GEOLOGÍA Y PELIGRO VOLCÁNICO ..................................................................................... 4 2.7. ATENCIÓN DE CRISIS VOLCÁNICA ....................................................................................... 4 2.8. DISPONIBILIDAD OPERATIVA DE LA RNVV ........................................................................... 5 2.9. REPORTES DE ACTIVIDAD VOLCÁNICA ................................................................................. 5 2.10. COORDINACIÓN CON EL CENTRO SISMOLÓGICO NACIONAL -
Southern Chile
Andean Geology 42 (2): 173-189. May, 2015 Andean Geology doi: 10.5027/andgeoV42n2-a02 www.andeangeology.cl Tephrochronology of the upper Río Cisnes valley (44°S), southern Chile Charles R. Stern1, María Eugenia de Porras2, Antonio Maldonado2,3 1 Department of Geological Sciences, University of Colorado, Boulder, Colorado 80309-0399, USA. [email protected] 2 Centro de Estudios Avanzados en Zonas Áridas (CEAZA), Universidad de La Serena, Raúl Bitran 1305, La Serena, Chile. [email protected] 3 Departamento de Biología Marina, Universidad Católica del Norte, Larrondo 1281, Coquimbo, Chile. [email protected] ABSTRACT. Based on their petrography and chemistry, 18 tephra analyzed from two lake and bog cores and one outcrop in the upper Río Cisnes valley are believed to have been derived from nine different eruptions of the Mentolat volcano, four of the Melimoyu volcano, and one from the Hudson volcano. Some of these tephra correlate chronologically and petrochemically with previously documented large eruptions of these volcanoes, including the Late-Glacial Ho eruption of Hudson (17,340 cal yrs BP), the mid-Holocene MEN1 eruption of Mentolat (7,710 cal yrs BP), and the Late-Holocene MEL2 eruption of Melimoyu (1,680 cal yrs BP). A Melimoyu-derived tephra from the outcrop occurs in glacial-lacustrine sediments and is considered to pre-date the Last Glacial Maximum (>19,670 cal yrs BP). The data suggest that none of the tephra were produced by explosive eruptions of the Maca, Cay and Yanteles volcanoes. Keywords: Tephra, Tephrochronology, Tephrostratigraphy, Volcanism, Andes, Chile. RESUMEN. Tefrocronología en curso superior del valle del río Cisne (44°S), Chile Austral. -
USGS Open-File Report 2009-1133, V. 1.2, Table 3
Table 3. (following pages). Spreadsheet of volcanoes of the world with eruption type assignments for each volcano. [Columns are as follows: A, Catalog of Active Volcanoes of the World (CAVW) volcano identification number; E, volcano name; F, country in which the volcano resides; H, volcano latitude; I, position north or south of the equator (N, north, S, south); K, volcano longitude; L, position east or west of the Greenwich Meridian (E, east, W, west); M, volcano elevation in meters above mean sea level; N, volcano type as defined in the Smithsonian database (Siebert and Simkin, 2002-9); P, eruption type for eruption source parameter assignment, as described in this document. An Excel spreadsheet of this table accompanies this document.] Volcanoes of the World with ESP, v 1.2.xls AE FHIKLMNP 1 NUMBER NAME LOCATION LATITUDE NS LONGITUDE EW ELEV TYPE ERUPTION TYPE 2 0100-01- West Eifel Volc Field Germany 50.17 N 6.85 E 600 Maars S0 3 0100-02- Chaîne des Puys France 45.775 N 2.97 E 1464 Cinder cones M0 4 0100-03- Olot Volc Field Spain 42.17 N 2.53 E 893 Pyroclastic cones M0 5 0100-04- Calatrava Volc Field Spain 38.87 N 4.02 W 1117 Pyroclastic cones M0 6 0101-001 Larderello Italy 43.25 N 10.87 E 500 Explosion craters S0 7 0101-003 Vulsini Italy 42.60 N 11.93 E 800 Caldera S0 8 0101-004 Alban Hills Italy 41.73 N 12.70 E 949 Caldera S0 9 0101-01= Campi Flegrei Italy 40.827 N 14.139 E 458 Caldera S0 10 0101-02= Vesuvius Italy 40.821 N 14.426 E 1281 Somma volcano S2 11 0101-03= Ischia Italy 40.73 N 13.897 E 789 Complex volcano S0 12 0101-041