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Kinematic Reconstruction of the Caribbean Region Since the Early Jurassic
Earth-Science Reviews 138 (2014) 102–136 Contents lists available at ScienceDirect Earth-Science Reviews journal homepage: www.elsevier.com/locate/earscirev Kinematic reconstruction of the Caribbean region since the Early Jurassic Lydian M. Boschman a,⁎, Douwe J.J. van Hinsbergen a, Trond H. Torsvik b,c,d, Wim Spakman a,b, James L. Pindell e,f a Department of Earth Sciences, Utrecht University, Budapestlaan 4, 3584 CD Utrecht, The Netherlands b Center for Earth Evolution and Dynamics (CEED), University of Oslo, Sem Sælands vei 24, NO-0316 Oslo, Norway c Center for Geodynamics, Geological Survey of Norway (NGU), Leiv Eirikssons vei 39, 7491 Trondheim, Norway d School of Geosciences, University of the Witwatersrand, WITS 2050 Johannesburg, South Africa e Tectonic Analysis Ltd., Chestnut House, Duncton, West Sussex, GU28 OLH, England, UK f School of Earth and Ocean Sciences, Cardiff University, Park Place, Cardiff CF10 3YE, UK article info abstract Article history: The Caribbean oceanic crust was formed west of the North and South American continents, probably from Late Received 4 December 2013 Jurassic through Early Cretaceous time. Its subsequent evolution has resulted from a complex tectonic history Accepted 9 August 2014 governed by the interplay of the North American, South American and (Paleo-)Pacific plates. During its entire Available online 23 August 2014 tectonic evolution, the Caribbean plate was largely surrounded by subduction and transform boundaries, and the oceanic crust has been overlain by the Caribbean Large Igneous Province (CLIP) since ~90 Ma. The consequent Keywords: absence of passive margins and measurable marine magnetic anomalies hampers a quantitative integration into GPlates Apparent Polar Wander Path the global circuit of plate motions. -
Appendix A. Supplementary Material to the Manuscript
Appendix A. Supplementary material to the manuscript: The role of crustal and eruptive processes versus source variations in controlling the oxidation state of iron in Central Andean magmas 1. Continental crust beneath the CVZ Country Rock The basement beneath the sampled portion of the CVZ belongs to the Paleozoic Arequipa- Antofalla terrain – a high temperature metamorphic terrain with abundant granitoid intrusions that formed in response to Paleozoic subduction (Lucassen et al., 2000; Ramos et al., 1986). In Northern Chile and Northwestern Argentina this Paleozoic metamorphic-magmatic basement is largely homogeneous and felsic in composition, consistent with the thick, weak, and felsic properties of the crust beneath the CVZ (Beck et al., 1996; Fig. A.1). Neodymium model ages of exposed Paleozoic metamorphic-magmatic basement and sediments suggest a uniform Proterozoic protolith, itself derived from intrusions and sedimentary rock (Lucassen et al., 2001). AFC Model Parameters Pervasive assimilation of continental crust in the Central Andean ignimbrite magmas is well established (Hildreth and Moorbath, 1988; Klerkx et al., 1977; Fig. A.1) and has been verified by detailed analysis of radiogenic isotopes (e.g. 87Sr/86Sr and 143Nd/144Nd) on specific systems within the CVZ (Kay et al., 2011; Lindsay et al., 2001; Schmitt et al., 2001; Soler et al., 2007). Isotopic results indicate that the CVZ magmas are the result of mixing between a crustal endmember, mainly gneisses and plutonics that have a characteristic crustal signature of high 87Sr/86Sr and low 145Nd/144Nd, and the asthenospheric mantle (low 87Sr/86Sr and high 145Nd/144Nd; Fig. 2). In Figure 2, we model the amount of crustal assimilation required to produce the CVZ magmas that are targeted in this study. -
Full-Text PDF (Final Published Version)
Pritchard, M. E., de Silva, S. L., Michelfelder, G., Zandt, G., McNutt, S. R., Gottsmann, J., West, M. E., Blundy, J., Christensen, D. H., Finnegan, N. J., Minaya, E., Sparks, R. S. J., Sunagua, M., Unsworth, M. J., Alvizuri, C., Comeau, M. J., del Potro, R., Díaz, D., Diez, M., ... Ward, K. M. (2018). Synthesis: PLUTONS: Investigating the relationship between pluton growth and volcanism in the Central Andes. Geosphere, 14(3), 954-982. https://doi.org/10.1130/GES01578.1 Publisher's PDF, also known as Version of record License (if available): CC BY-NC Link to published version (if available): 10.1130/GES01578.1 Link to publication record in Explore Bristol Research PDF-document This is the final published version of the article (version of record). It first appeared online via Geo Science World at https://doi.org/10.1130/GES01578.1 . Please refer to any applicable terms of use of the publisher. University of Bristol - Explore Bristol Research General rights This document is made available in accordance with publisher policies. Please cite only the published version using the reference above. Full terms of use are available: http://www.bristol.ac.uk/red/research-policy/pure/user-guides/ebr-terms/ Research Paper THEMED ISSUE: PLUTONS: Investigating the Relationship between Pluton Growth and Volcanism in the Central Andes GEOSPHERE Synthesis: PLUTONS: Investigating the relationship between pluton growth and volcanism in the Central Andes GEOSPHERE; v. 14, no. 3 M.E. Pritchard1,2, S.L. de Silva3, G. Michelfelder4, G. Zandt5, S.R. McNutt6, J. Gottsmann2, M.E. West7, J. Blundy2, D.H. -
Volcán Lascar
Volcán Lascar Región: Antofagasta Provincia: El Loa Comuna: San Pedro de Atacama Coordenadas: 21°22’S – 67°44’O Poblados más cercanos: Talabre – Camar – Socaire Tipo: Estratovolcán Altura: 5.592 m s.n.m. Diámetro basal: 8.9 km Área basal: 62.2 km2 Volumen estimado: 28.5 km3 Última actividad: 2015 Última erupción mayor: 1993 Volcán Lascar. Vista desde el norte Ranking de riesgo (Fotografía: Gabriela Jara, SERNAGEOMIN) 14 específico: Generalidades El volcán Láscar corresponde a un estratovolcán compuesto, elongado en dirección este-oeste, activo desde hace unos 240 ka y emplazado en el margen oeste de la planicie altiplánica. Está conformado por lavas andesíticas, que alcanzan más de 10 km de longitud, y por potentes lavas dacíticas que se extienden hasta 5 km, las que fueron emitidas desde los flancos NO a SO. La lava más reciente se estima en 7 mil años de antigüedad. En los alrededores del volcán se reconocen depósitos de flujo y caída piroclástica, además de numerosos cráteres de impacto asociados a la eyección de bombas durante erupciones plinianas y subplinianas. El principal evento eruptivo durante su evolución se denomina Ignimbrita Soncor, generado hace unos 27 ka al oeste del volcán y con un volumen estimado cercano a los 10 km3. En la cima de este volcán se observan seis cráteres, algunos anidados, y el central de estos se encuentra activo. Registro eruptivo Este volcán ha presentado alrededor de 30 erupciones explosivas desde el siglo XIX, lo que lo convierte en el volcán más activo del norte de Chile. Estos eventos han consistido típicamente en erupciones vulcanianas de corta duración, con emisión de ceniza fina y proyecciones balísticas en un radio de 5 km, donde el último evento de este tipo ocurrió el 30 de octubre del 2015. -
A Structural and Geochronological Study of Tromen Volcano
Volcanism in a compressional Andean setting: A structural and geochronological study of Tromen volcano (Neuqu`enprovince, Argentina) Olivier Galland, Erwan Hallot, Peter Cobbold, Gilles Ruffet, Jean De Bremond d'Ars To cite this version: Olivier Galland, Erwan Hallot, Peter Cobbold, Gilles Ruffet, Jean De Bremond d'Ars. Vol- canism in a compressional Andean setting: A structural and geochronological study of Tromen volcano (Neuqu`enprovince, Argentina). Tectonics, American Geophysical Union (AGU), 2007, 26 (4), pp.TC4010. <10.1029/2006TC002011>. <insu-00180007> HAL Id: insu-00180007 https://hal-insu.archives-ouvertes.fr/insu-00180007 Submitted on 29 Jun 2016 HAL is a multi-disciplinary open access L'archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destin´eeau d´ep^otet `ala diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publi´esou non, lished or not. The documents may come from ´emanant des ´etablissements d'enseignement et de teaching and research institutions in France or recherche fran¸caisou ´etrangers,des laboratoires abroad, or from public or private research centers. publics ou priv´es. TECTONICS, VOL. 26, TC4010, doi:10.1029/2006TC002011, 2007 Volcanism in a compressional Andean setting: A structural and geochronological study of Tromen volcano (Neuque´n province, Argentina) Olivier Galland,1,2 Erwan Hallot,1 Peter R. Cobbold,1 Gilles Ruffet,1 and Jean de Bremond d’Ars1 Received 28 June 2006; revised 6 February 2007; accepted 16 March 2007; published 2 August 2007. [1] We document evidence for growth of an active [3] In contrast, a context of crustal thickening, where the volcano in a compressional Andean setting. -
Scale Deformation of Volcanic Centres in the Central Andes
letters to nature 14. Shannon, R. D. Revised effective ionic radii and systematic studies of interatomic distances in halides of 1–1.5 cm yr21 (Fig. 2). An area in southern Peru about 2.5 km and chalcogenides. Acta Crystallogr. A 32, 751–767 (1976). east of the volcano Hualca Hualca and 7 km north of the active 15. Hansen, M. (ed.) Constitution of Binary Alloys (McGraw-Hill, New York, 1958). 21 16. Emsley, J. (ed.) The Elements (Clarendon, Oxford, 1994). volcano Sabancaya is inflating with U LOS of about 2 cm yr . A third 21 17. Tanaka, H., Takahashi, I., Kimura, M. & Sobukawa, H. in Science and Technology in Catalysts 1994 (eds inflationary source (with ULOS ¼ 1cmyr ) is not associated with Izumi, Y., Arai, H. & Iwamoto, M.) 457–460 (Kodansya-Elsevier, Tokyo, 1994). a volcanic edifice. This third source is located 11.5 km south of 18. Tanaka, H., Tan, I., Uenishi, M., Kimura, M. & Dohmae, K. in Topics in Catalysts (eds Kruse, N., Frennet, A. & Bastin, J.-M.) Vols 16/17, 63–70 (Kluwer Academic, New York, 2001). Lastarria and 6.8 km north of Cordon del Azufre on the border between Chile and Argentina, and is hereafter called ‘Lazufre’. Supplementary Information accompanies the paper on Nature’s website Robledo caldera, in northwest Argentina, is subsiding with U (http://www.nature.com/nature). LOS of 2–2.5 cm yr21. Because the inferred sources are more than a few kilometres deep, any complexities in the source region are damped Acknowledgements such that the observed surface deformation pattern is smooth. -
Three-Dimensional Resistivity Image of the Magmatic System Beneath
PUBLICATIONS Geophysical Research Letters RESEARCH LETTER Three-dimensional resistivity image of the magmatic system 10.1002/2015GL064426 beneath Lastarria volcano and evidence for magmatic Key Points: intrusion in the back arc (northern Chile) • Electrical resistivity images of the Lastrarria volcano Daniel Díaz1,2, Wiebke Heise3, and Fernando Zamudio1 • The magmatic source is located to the south of Lastarria volcano 1Departamento de Geofísica, Universidad de Chile, Santiago, Chile, 2Centro de Excelencia en Geotermia de Los Andes, • Deep conductor in the back arc 3 suggests magmatic intrusion Santiago, Chile, GNS Science, Lower Hutt, New Zealand Supporting Information: Abstract Lazufre volcanic center, located in the central Andes, is recently undergoing an episode of uplift, • Readme conforming one of the most extensive deforming volcanic systems worldwide, but its magmatic system and • Text S1 • Figure S1 its connection with the observed uplift are still poorly studied. Here we image the electrical resistivity structure • Figure S2 using the magnetotelluric method in the surroundings of the Lastarria volcano, one of the most important • Figure S3 features in the Lazufre area, to understand the nature of the magmatic plumbing, the associated fumarolic • Figure S4 activity, and the large-scale surface deformation. Results from 3-D modeling show a conductive zone at 6 km Correspondence to: depth south of the Lastarria volcano interpreted as the magmatic heat source which is connected to a shallower D. Díaz, conductor beneath the volcano, showing the pathways of volcanic gasses and heated fluid. A large-scale [email protected] conductive area coinciding with the area of uplift points at a magma intrusion at midcrustal depth. -
Actualización Plan Director De Infraestructura Mop
REPÚBLICA DE CHILE MINISTERIO DE OBRAS PÚBLICAS DIRECCIÓN DE PLANEAMIENTO ACTUALIZACIÓN PLAN DIRECTOR DE INFRAESTRUCTURA MOP Informe Final Región de Antofagasta Chile, Noviembre de 2009 INECON, Ingenieros y Economistas Consultores S.A. ÍNDICE 1. CARACTERÍSTICAS DE LA REGIÓN DE ANTOFAGASTA ............................ 1 1.1. Características generales. ............................................................................. 1 1.2. Características económicas. .......................................................................... 1 1.3. Características de la población. ..................................................................... 2 1.4. Gasto histórico en infraestructura por parte del MOP. ...................................... 2 2. IMAGEN OBJETIVO DE LA REGIÓN DE ANTOFAGASTA ............................ 3 2.1. Diagnósticos, objetivos estratégicos y visiones pertinentes. .............................. 3 2.1.1. Estrategia de Desarrollo Regional (EDR) ................................................... 3 2.1.2. Visión 2020- Talleres MOP ..................................................................... 4 2.1.3. Reconocimiento Territorial ...................................................................... 4 2.2. Oportunidades y restricciones de la región. ..................................................... 5 2.2.1. Oportunidades ...................................................................................... 5 2.2.2. Restricciones ....................................................................................... -
3.18 Oneviewofthegeochemistryof Subduction-Related Magmatic Arcs
3.18 OneView of the Geochemistry of Subduction-Related Magmatic Arcs, with an Emphasis on Primitive Andesite and Lower Crust P. B. Ke l e m e n Columbia University, Palisades, NY, USA K. HanghÖj Lamont-Doherty Earth Observatory of Columbia University, Palisades, NY,USA and A. R. Greene University of British Columbia,Vancouver, BC, Canada 3.18.1 INTRODUCTION 2 3.18.1.1 Definition of Terms Used in This Chapter 2 3.18.2 ARC LAVA COMPILATION 3 3.18.3 CHARACTERISTICS OF ARC MAGMAS 7 3.18.3.1 Comparison with MORBs 7 3.18.3.1.1 Major elements 7 3.18.3.1.2 We are cautious about fractionation correction of major elements 9 3.18.3.1.3 Distinctive, primitive andesites 11 3.18.3.1.4 Major elements in calc-alkaline batholiths 11 3.18.3.2 Major and Trace-Element Characteristics of Primitive Arc Magmas 18 3.18.3.2.1 Primitive basalts predominate 18 3.18.3.2.2 Are some low Mgx basalts primary melts? Perhaps not 22 3.18.3.2.3 Boninites, briefly 22 3.18.3.2.4 Primitive andesites: a select group 23 3.18.3.2.5 Three recipes for primitive andesite 23 3.18.3.3 Trace Elements, Isotopes, and Source Components in Primitive Magmas 29 3.18.3.3.1 Incompatible trace-element enrichment 29 3.18.3.3.2 Tantalum and niobium depletion 36 3.18.3.3.3 U-series isotopes 37 3.18.3.3.4 Geodynamic considerations 40 3.18.4 ARC LOWER CRUST 43 3.18.4.1 Talkeetna Arc Section 43 3.18.4.1.1 Geochemical data from the Talkeetna section 45 3.18.4.1.2 Composition, fractionation, and primary melts in the Talkeetna section 49 3.18.4.2 Missing Primitive Cumulates: Due to Delamination 52 3.18.4.3 -
Episodic Nature of Continental Arc Activity Since 750 Ma: a Global Compilation ∗ Wenrong Cao A, , Cin-Ty A
Earth and Planetary Science Letters 461 (2017) 85–95 Contents lists available at ScienceDirect Earth and Planetary Science Letters www.elsevier.com/locate/epsl Episodic nature of continental arc activity since 750 Ma: A global compilation ∗ Wenrong Cao a, , Cin-Ty A. Lee a, Jade Star Lackey b a Department of Earth Science, Rice University, 6100 Main Street, MS-126, Houston, TX 77005, United States b Geology Department, Pomona College, 185 East 6th Street, Claremont, CA 91711, United States a r t i c l e i n f o a b s t r a c t Article history: Continental arcs have been recently hypothesized to outflux large amounts of CO2 compared to island Received 15 October 2016 arcs so that global flare-ups in continental arc magmatism might drive long-term greenhouse events. Received in revised form 3 December 2016 Quantitative testing of this hypothesis, however, has been limited by the lack of detailed studies on Accepted 27 December 2016 the spatial distribution of continental arcs through time. Here, we compile a worldwide database of Available online xxxx geological maps and associated literature to delineate the surface exposure of granitoid plutons, allowing Editor: A. Yin reconstruction of how the surface area addition rate of granitoids and the length of continental arcs have Keywords: varied since 750 Ma. These results were integrated into an ArcGIS framework and plate reconstruction continental arcs models. We find that the spatial extent of continental arcs is episodic with time and broadly matches episodicity the detrital zircon age record. Most vigorous arc magmatism occurred during the 670–480 Ma and the plate tectonics 250–50 Ma when major greenhouse events are recognized. -
Persistent Uplift of the Lazufre Volcanic Complex (Central 10.1002/2014GC005370 Andes): New Insights from PCAIM Inversion of Insar Time
PUBLICATIONS Geochemistry, Geophysics, Geosystems RESEARCH ARTICLE Persistent uplift of the Lazufre volcanic complex (Central 10.1002/2014GC005370 Andes): New insights from PCAIM inversion of InSAR time Key Points: series and GPS data InSAR and GPS analysis using PCAIM D. Remy1, J. L. Froger2, H. Perfettini3, S. Bonvalot1, G. Gabalda1, F. Albino2,4, V. Cayol2, 5,6 1 Correspondence to: D. Legrand , and M. De Saint Blanquat D. Remy, 1 2 [email protected] GET/UMR 5563 (UPS, CNRS, IRD, CNES), Observatoire Midi-Pyren ees, Universite P. Sabatier, Toulouse, France, LMV/UMR 6524 (UBP-CNRS-IRD), Observatoire de Physique du Globe de Clermont-Ferrand, Universite B. Pascal, Clermont-Ferrand, France, 3ISTERRE/UMR 5275 (UJF, CNRS, IRD), Observatoire des Sciences de l’Univers de Grenoble, Universite Joseph Fou- Citation: 4 Remy, D., J. L. Froger, H. Perfettini, rier, Grenoble, France, Now at Department of Earth Sciences, Cartography & Remote Sensing Unit, Royal Museum for S. Bonvalot, G. Gabalda, F. Albino, Central Africa, Tervuren, Belgium, 5Departamento de Geofısica, Universidad de Chile, Santiago, Chile, 6Now at Instituto de V. Cayol, D. Legrand, and M. Saint Geofisica, Universidad Nacional Autonoma de Mexico, Coyoacan, Mexico Blanquat (2014), Persistent uplift of the Lazufre volcanic complex (Central Andes): New insights from PCAIM inversion of InSAR time series and GPS Abstract We reanalyzed the surface displacements observed at the Lazufre volcanic complex in the data, Geochem. Geophys. Geosyst., 15, Southern Andean Central Volcanic Zone using GPS measurements made between 2006 and 2008 and a doi:10.1002/2014GC005370. large InSAR data set. We performed a detailed spatiotemporal analysis of the displacements using a princi- pal component analysis inversion method (PCAIM). -
Processes Culminating in the 2015 Phreatic Explosion at Lascar Volcano, Chile, Monitored by Multiparametric Data Ayleen Gaete1, Thomas R
https://doi.org/10.5194/nhess-2019-189 Preprint. Discussion started: 25 June 2019 c Author(s) 2019. CC BY 4.0 License. Processes culminating in the 2015 phreatic explosion at Lascar volcano, Chile, monitored by multiparametric data Ayleen Gaete1, Thomas R. Walter1, Stefan Bredemeyer1,2, Martin Zimmer1, Christian Kujawa1, Luis Franco3, Juan San Martin4, Claudia Bucarey Parra3 5 1 GFZ German Research Centre for Geosciences, Telegrafenberg, 14473 Potsdam, Germany 2 GEOMAR Helmholtz Centre for Ocean Research Kiel, 24148 Kiel, Germany 3 Observatorio Volcanológico de Los Andes del Sur (OVDAS), Servicio Nacional de Geología y Minería (SERNAGEOMIN), Temuco, Chile. 4 Physics Science Department, Universidad de la Frontera, Casilla 54-D, Temuco, Chile. 10 Correspondence to: Ayleen Gaete ([email protected]) Abstract. Small steam-driven volcanic explosions are common at volcanoes worldwide but are rarely documented or monitored; therefore, these events still put residents and tourists at risk every year. Steam-driven explosions also occur frequently (once every 2-5 years on average) at Lascar volcano, Chile, where they are often spontaneous and lack any identifiable precursor activity. Here, for the first time at Lascar, we describe the processes culminating in such a sudden 15 volcanic explosion that occurred on October 30, 2015, which was thoroughly monitored by cameras, a seismic network, and gas (SO2 and CO2) and temperature sensors. Prior to the eruption, we retrospectively identified unrest manifesting as a gradual increase in the number of long-period (LP) seismic events in 2014, indicating an augmented level of activity at the volcano. Additionally, SO2 flux and thermal anomalies were detected before the eruption.