Solid Earth – Basic Science for the Human Habitat”
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Latitudinal and Longitudinal Patterns of Exhumation in the Andes of North-Central Chile
Tectonics RESEARCH ARTICLE Latitudinal and Longitudinal Patterns of Exhumation 10.1029/2018TC004997 in the Andes of North-Central Chile Key Points: María Pía Rodríguez1,2 , Reynaldo Charrier1,2,3, Stephanie Brichau4, Sébastien Carretier1,4, • Exhumation next to the western 1 4 5 topographic front occurred mostly Marcelo Farías , Philippe de Parseval , and Richard A. Ketcham during the Eocene north of 31.5°S 1 2 and during the Miocene, south of Departamento de Geología, Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile, Santiago, Chile, Advance 3 31.5°S Mining Technology Center, Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile, Santiago, Chile, Escuela de • Late Miocene exhumation along the Ciencias de la Tierra, Universidad Andres Bello, Santiago, Chile, 4Géosciences Environnement Toulouse, Université de eastern reaches of the studied region Toulouse, UPS, IRD, CNRS, GET, Toulouse, France, 5Department of Geological Sciences, Jackson School of Geosciences, The is probably the consequence of the onset of flat subduction University of Texas at Austin, Austin, TX, USA • The Paleozoic crystalline core of the Main Cordillera seems to have acted as a buttress for shortening during Abstract New thermochronometric data provide evidence for an along-strike diachronous building of the the Eocene Andes in north-central Chile (28.5–32°S). Geochronological (U-Pb zircon) and thermochronological (apatite fission track and (U-Th)/He) analyses of rock units were obtained in west-to-east transects across the western Supporting Information: topographic front. Thermal models indicate that the area west of the topographic front was little exhumed • Supporting Information S1 since approximately 45 Ma. -
Volcanism in Reverse and Strike-Slip Fault Settings
See discussions, stats, and author profiles for this publication at: https://www.researchgate.net/publication/227024325 Volcanism in Reverse and Strike-Slip Fault Settings Chapter · March 2010 DOI: 10.1007/978-90-481-2737-5_9 CITATIONS READS 17 450 3 authors, including: Alessandro Tibaldi Federico Pasquaré Mariotto Università degli Studi di Milano-Bicocca Università degli Studi dell'Insubria 151 PUBLICATIONS 2,600 CITATIONS 57 PUBLICATIONS 349 CITATIONS SEE PROFILE SEE PROFILE All content following this page was uploaded by Federico Pasquaré Mariotto on 04 February 2014. The user has requested enhancement of the downloaded file. All in-text references underlined in blue are added to the original document and are linked to publications on ResearchGate, letting you access and read them immediately. Volcanism in Reverse and Strike-Slip Fault Settings Alessandro Tibaldi, Federico Pasquarè, and Daniel Tormey Abstract Traditionally volcanism is thought to the volcano to the surface along the main faults, irre- require an extensional state of stress in the crust. This spective of the orientation of σ3. The petrology and review examines recent relevant data demonstrating geochemistry of lavas erupted in compressive stress that volcanism occurs also in compressional tectonic regimes indicate longer crustal residence times, and settings associated with reverse and strike-slip faulting. higher degrees of lower crustal and upper crustal melts Data describing the tectonic settings, structural analy- contributing to the evolving magmas when compared sis, analogue modelling, petrology, and geochemistry, to lavas from extensional stress regimes. Small vol- are integrated to provide a comprehensive presenta- umes of magma tend to rise to shallow crustal lev- tion of this topic. -
Iavcei International Association of Volcanology and Chemistry of the Earth’S Interior Association Symposia and Workshops
IAVCEI INTERNATIONAL ASSOCIATION OF VOLCANOLOGY AND CHEMISTRY OF THE EARTH’S INTERIOR ASSOCIATION SYMPOSIA AND WORKSHOPS Excerpt of “Earth: Our Changing Planet. Proceedings of IUGG XXIV General Assembly Perugia, Italy 2007” Compiled by Lucio Ubertini, Piergiorgio Manciola, Stefano Casadei, Salvatore Grimaldi Published on website: www.iugg2007perugia.it ISBN : 978-88-95852-24-6 Organized by IRPI High Patronage of the President of the Republic of Italy Patronage of Presidenza del Consiglio dei Ministri Ministero degli Affari Esteri Ministero dell’Ambiente e della Tutela del Territorio e del Mare Ministero della Difesa Ministero dell’Università e della Ricerca IUGG XXIV General Assembly July 2-13, 2007 Perugia, Italy SCIENTIFIC PROGRAM COMMITTEE Paola Rizzoli Chairperson Usa President of the Scientific Program Committee Uri Shamir President of International Union of Geodesy and Israel Geophysics, IUGG Jo Ann Joselyn Secretary General of International Union of Usa Geodesy and Geophysics, IUGG Carl Christian Tscherning Secretary-General IAG International Association of Denmark Geodesy Bengt Hultqvist Secretary-General IAGA International Association Sweden of Geomagnetism and Aeronomy Pierre Hubert Secretary-General IAHS International Association France of Hydrological Sciences Roland List Secretary-General IAMAS International Association Canada of Meteorology and Atmospheric Sciences Fred E. Camfield Secretary-General IAPSO International Association Usa for the Physical Sciences of the Oceans Peter Suhadolc Secretary-General IASPEI International -
Südamerika: Geologische Gliederung Und Plattentektonische Entwicklungseit Dem Spätpräkambrium
0.- Andes General .- Ramos V. A., (2009). Anatomy and global context of the Andes: Main geologic features and the Andean orogenic cycle. The Geological Society of America Memoir, pp 31 – 35. .- Martí, J., Geyer, A., Folch, A., 2009. A genetic classification of collapse calderas based on field studies, and analogue and theoretical modeling. In: Thordarson, T., Self, S. (Eds.), Volcanology, the Legacy of George Walker: Geological Society of London Special Publication, 2, pp. 249–266. 1.- Südamerika: Geologische Gliederung und plattentektonische Entwicklungseit dem Spätpräkambrium UND 2.- Proterozoisch-paläozoische Beckenentwicklung und Geotektonik in Nordchile und NW-Argentinien .- Aceñolaza, F.G., Miller, H., Toselli, A.J. 2002. Proterozoic-Early Paleozoic evolution in western South America. A discussion. Tectonophysics 354. 121-137. .- Adams, C., Miller, H., Toselli, A.J., Griffin, W.L., 2008. The Puncoviscana Formation of northwest Argentina: U-Pb geochronology of detrital zircons and Rb-Sr metamorphic ages and their bearing on its stratigraphic age, sediment provenance and tectonic setting. Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen 247, 341-352. .- Augustsson, C., Munker, C., Bahlburg, H., Fanning, C.M., 2006. Provenance of late Palaeozoic metasediments of the SW South American Gondwana margin: a combined U–Pb and Hf-isotope study of single detrital zircons. Journal of the Geological Society, London 163 (6), 983–995 .- Bahlburg, H., Vervoort, J.D., 2007. LA-ICP-MSgeochronology of detrital zircons in Late Paleozoic turbidte units of northern Chile: implications for terrane processes. Geochimica et Cosmochimica Acta 71 (15S), A51. .- Becchio, R., Lucassen, F., Kasemann, S., Franz, G., Viramonte, J., 1999. Geoquímica y sistemática isotópica de rocas metamórficas Paleozoico inferior: Noroeste de Argentina y Norte de Chile. -
Geothermal Potential of the Cascade and Aleutian Arcs, with Ranking of Individual Volcanic Centers for Their Potential to Host Electricity-Grade Reservoirs
DE-EE0006725 ATLAS Geosciences Inc FY2016, Final Report, Phase I Final Research Performance Report Federal Agency and Organization: DOE EERE – Geothermal Technologies Program Recipient Organization: ATLAS Geosciences Inc DUNS Number: 078451191 Recipient Address: 3372 Skyline View Dr Reno, NV 89509 Award Number: DE-EE0006725 Project Title: Geothermal Potential of the Cascade and Aleutian Arcs, with Ranking of Individual Volcanic Centers for their Potential to Host Electricity-Grade Reservoirs Project Period: 10/1/14 – 10/31/15 Principal Investigator: Lisa Shevenell President [email protected] 775-240-7323 Report Submitted by: Lisa Shevenell Date of Report Submission: October 16, 2015 Reporting Period: September 1, 2014 through October 15, 2015 Report Frequency: Final Report Project Partners: Cumming Geoscience (William Cumming) – cost share partner GEODE (Glenn Melosh) – cost share partner University of Nevada, Reno (Nick Hinz) – cost share partner Western Washington University (Pete Stelling) – cost share partner DOE Project Team: DOE Contracting Officer – Laura Merrick DOE Project Officer – Eric Hass Project Monitor – Laura Garchar Signature_______________________________ Date____10/16/15_______________ *The Prime Recipient certifies that the information provided in this report is accurate and complete as of the date shown. Any errors or omissions discovered/identified at a later date will be duly reported to the funding agency. Page 1 of 152 DE-EE0006725 ATLAS Geosciences Inc FY2016, Final Report, Phase I Geothermal Potential of -
The Structural Architecture of the Los Humeros Volcanic Complex and Geothermal Field
The structural architecture of the Los Humeros volcanic complex and geothermal field Gianluca Norini1, Gerardo Carrasco–Núñez2, Fernando Corbo-Camargo2, Javier Lermo3, Javier Hernández Rojas2, César Castro2, Marco Bonini4, Domenico Montanari4, Giacomo Corti4, Giovanna Moratti4, Luigi Piccardi4, Guillermo Chavez5, Maria Clara Zuluaga6, Miguel Ramirez7, Fidel Cedillo8 1Istituto di Geologia Ambientale e Geoingegneria, Consiglio Nazionale delle Ricerche, Milano, Italy 2Centro de Geociencias, Universidad Nacional Autónoma de México, Querétaro, México 3Instituto de Ingeniería, Universidad Nacional Autónoma de México, CDMX, México 4Istituto di Geoscienze e Georisorse, Consiglio Nazionale delle Ricerche, Firenze, Italy 5Polaris Energy Nicaragua S.A., Managua, Nicaragua 6Dirección de Recursos Minerales, Servicio Geológico Colombiano, Bogotá, Colombia 7Comisión Federal de Electricidad, Gerencia de Proyectos Geotermoeléctricos SEDE, Morelia, Michoacán, México 8Seismocontrol S.A. de C.V., Ciudad de Mexico, Mexico Corresponding author: G. Norini, tel. +390266173334, fax +390228311442, [email protected] Abstract The Los Humeros Volcanic Complex (LHVC) is a large silicic caldera complex in the Trans-Mexican Volcanic Belt (TMVB), hosting a geothermal field currently in exploitation by the Comisión Federal de Electricidad (CFE) of Mexico, with an installed capacity of ca. 95 MW of electric power. Understanding the structural architecture of LHVC is important to get insights into the interplay between the volcano-tectonic setting and the characteristics of the geothermal resources in the area. The analysis of volcanotectonic interplay in LHVC benefits from the availability of subsurface data obtained during the exploration of the geothermal reservoir that allows the achievement of a 3D structural view of the volcano system. The LHVC thus represents an important natural laboratory for the development of general models of volcano-tectonic interaction in calderas. -
Thesis Reference
Thesis Lithostratigraphical and tectono-sedimentary study of the Plio-Pleistocene infill of the Interandean North Cauca Valley Basin (Colombia) NEUWERTH, Ralph Abstract This investigation focus on the study of the Plio-Plesitocene deposits in a zone covering parts of the Quindío, Risaralda and Valle del Cauca departments in Central Colombia. The results can be summarized as follows : In the initial phase, a vast field campaign, a detailed sedimentological study and facies analyses have led to the differentiation of various lithological units within the Zarzal Formation, allowing the stratigraphical redefinition of the Plio-Pleistocene sediments deposited in the northern part of the Cauca Basin, on both sides of the Serranía de Santa Barbara. This sedimentological study has demonstrated the existence of soft-sediment deformations interpreted as seismites. They demonstrate an intense synsedimentary seismic activity during the Plio-Pleistocene. The last part of this research presents a tectonic study at a larger scale than the studied North Cauca Basin. A dextral strike-slip zone has been evidenced. This deformation zone seems to be responsible for the closing of the North Cauca Basin studied here. Reference NEUWERTH, Ralph. Lithostratigraphical and tectono-sedimentary study of the Plio-Pleistocene infill of the Interandean North Cauca Valley Basin (Colombia). Thèse de doctorat : Univ. Genève, 2009, no. Sc. 4141 URN : urn:nbn:ch:unige-189486 DOI : 10.13097/archive-ouverte/unige:18948 Available at: http://archive-ouverte.unige.ch/unige:18948 Disclaimer: layout of this document may differ from the published version. 1 / 1 UNIVERSITE DE GENEVE FACULTE DES SCIENCES Département de Géologie et Paléontologie Professeur G. -
Influence of Pre-Andean Crustal Structure on Cenozoic Thrust Belt
00923 1st pages / page 1 of 17 Infl uence of pre-Andean crustal structure on Cenozoic thrust belt kinematics and shortening magnitude: Northwestern Argentina David M. Pearson1,2*, Paul Kapp1, Peter G. DeCelles1, Peter W. Reiners1, George E. Gehrels1, Mihai N. Ducea1,3, and Alex Pullen1 1Department of Geosciences, University of Arizona, 1040 East 4th Street, Tucson, Arizona 85721, USA 2Department of Geosciences, Idaho State University, 921 South 8th Avenue, Pocatello, Idaho 83209, USA 3Facultatea de Geologie Geofi zica, Universitatea Bucuresti, Strada N. Balcescu Nr 1, Bucuresti, Romania ABSTRACT shortening at this latitude is ~142 km, which in northernmost Argentina and Bolivia (Fig. 1; is moderate in magnitude compared to the 17–23°S), Cenozoic thin-skinned shortening The retroarc fold-and-thrust belt of the 250–350 km of shortening accommodated in within a thick Paleozoic basin exceeds 300 km Central Andes exhibits major along-strike the retroarc thrust belt of southern Bolivia (Fig. 2; e.g., McQuarrie, 2002). Southwest of variations in its pre-Cenozoic tectonic con- to the north. This work supports previous Salta, Argentina (Fig. 1; ~25°S), where this fi guration. These variations have been pro- hypotheses that the magnitude of shorten- thick Paleozoic basin was absent prior to Ceno- posed to explain the considerable southward ing decreases signifi cantly along strike away zoic time, steeply dipping reverse faults that are decrease in the observed magnitude of Ceno- from a maximum in southern Bolivia, largely locally inverted normal faults are suggested to zoic shortening. Regional mapping, a cross as a result of the distribution of pre-Ceno- have accommodated <100 km of shortening section, and U-Pb and (U-Th)/He age dating zoic basins that are able to accommodate a (Fig. -
Gold Deposits of the World: Distribution, Geological Parameters and Gold Content
GEOLOGICAL SURVEY OF CANADA OPEN FILE 4895 Gold deposits of the world: distribution, geological parameters and gold content P. Gosselin, B. Dubé 2005 GEOLOGICAL SURVEY OF CANADA OPEN FILE 4895 Gold deposits of the world: distribution, geological parameters and gold content P. Gosselin, B. Dubé 2005 ©Her Majesty the Queen in Right of Canada 2005 Available from Geological Survey of Canada 601 Booth Street Ottawa, Ontario K1A 0E8 Gosselin, P., Dubé, B. 2005: Gold deposits of the world: distribution, geological parameters and gold content, Geological Survey of Canada, Open File 4895, 1 CD-ROM. Open files are products that have not gone through the GSC formal publication process. Table of Contents Foreword ..........................................................................................................................................1 Disclaimer - Reserves/Resource Data ..............................................................................................1 1. Introduction ..................................................................................................................................2 2. Structure of the World Gold Database .........................................................................................4 2.1. Deposit Form.....................................................................................................................6 2.2. Mine Form.......................................................................................................................17 2.3. Production Form..............................................................................................................19 -
Map and Database of Quaternary Faults and Folds in Colombia and Its Offshore Regions
U.S. Department of the Interior U.S. Geological Survey Map and Database of Quaternary Faults and Folds in Colombia and its Offshore Regions By Gabriel Paris, Michael N. Machette, Richard L. Dart, and Kathleen M. Haller Open-File Report 00-0284 This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey editorial standards nor with the North American Stratigraphic Code. Any use of trade names in this publication is for descriptive purposes only and does not imply endorsement by the U.S. Geological Survey. 2000 MAP AND DATABASE OF QUATERNARY FAULTS AND FOLDS IN COLOMBIA AND ITS OFFSHORE REGIONS A project of the International Lithosphere Program Task Group II-2, Major Active Faults of the World Data and map compiled by 1 GABRIEL PARIS, 2 MICHAEL N. MACHETTE, 2 RICHARD L. DART, AND 2 KATHLEEN M. HALLER 1 Departamento de Geografia Universidad del Valle Melendez, Cali, Colombia 2 U.S. Geological Survey (USGS) Central Geologic Hazards Team MS 966, P.O. Box 25046 Denver, Colorado, USA Regional Coordinator for South America CARLOS COSTA Universidad Nacional de San Luis Departmento de Geologia Casilla de Correo 320 San Luis, Argentina ILP Task Group II-2 Co-Chairman, Western Hemisphere MICHAEL N. MACHETTE U.S. Geological Survey (USGS) Central Geologic Hazards Team MS 966, P.O. Box 25046 Denver, Colorado, USA May 2000 version International Lithosphere Program i TABLE OF CONTENTS Page INTRODUCTION.................................................................................................................................1 -
Tectonics & Structural Geology
EGU General Assembly 2012 EGU General Assembly 2012 Programme Group Programme TS – Tectonics & Structural Geology Monday, 23 April ........................................................................................................................................................................ 3 HS8.2.3 ..................................................................................................................................................................................... 3 GMPV2.1/GD2.7/SM4.2/TS1.4 ..................................................................................................................................................... 4 TS2.3/EMRP2.8/HS8.1.7 ............................................................................................................................................................. 6 TS2.4/HS8.1.8 ............................................................................................................................................................................ 7 GD2.2/GMPV6.5/SM3.7/TS3.8 .................................................................................................................................................... 10 TS4.5 ....................................................................................................................................................................................... 11 GMPV4.2/TS4.9 ....................................................................................................................................................................... -
RESEARCH Pliocene Intraplate-Type Volcanism in the Andean Fore- Land
RESEARCH Pliocene intraplate-type volcanism in the Andean fore- land at 26°10′S, 64°40′W (NW Argentina): Implications for magmatic and structural evolution of the Central Andes A. Gioncada1, L. Vezzoli2, R. Mazzuoli1, R. Omarini3, P. Nonnotte4, and H. Guillou5 1DIPARTIMENTO DI SCIENZE DELLA TERRA, UNIVERSITÀ DI PISA, VIA S. MARIA 53, 56126 PISA, ITALY 2DIPARTIMENTO DI SCIENZE CHIMICHE E AMBIENTALI, UNIVERSITÀ DELL’INSUBRIA, VIA VALLEGGIO 11, 22100 COMO, ITALY 3FACULTAD DE CIENCIAS NATURALES, UNIVERSIDAD NACIONAL DE SALTA, CONSEJO NACIONAL DE INVESTIGACIONES CIENTÍFICAS Y TÉCNICAS (CONICET), AVENIDA BOLIVIA Nº 5150, CP 4400, SALTA, ARGENTINA 4UNIVERSITÉ EUROPÉENNE DE BRETAGNE, FRANCE, AND UNIVERSITÉ DE BREST, CNRS, UMR 6538 DOMAINES OCÉANIQUES, INSTITUT UNIVERSITAIRE EUROPÉEN DE LA MER, PLACE N. COPERNIC, 29280 PLOUZANÉ, FRANCE 5COMMISSARIAT À L’ENERGIE ATOMIQUE/CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CEA-CNRS), UMR 1572, LABORATOIRE DES SCIENCES DU CLIMAT ET DE L’ENVIRONNEMENT, DOMAINE DU CNRS BÂTIMENT , AVENUE DE LA TERRASSE, 91198 GIF SUR YVETTE, FRANCE ABSTRACT The Antilla magmatic complex (26°10′S, 64°40′W, NW Argentina) attests to magma eruption at ca. 4.7 Ma in the Central Andes backarc region, 300 km E of the active arc. The Antilla lavas have an alkaline, predominantly mafi c composition and record the most primitive isoto- pic ratios (87Sr/86Sr = 0.704360 and 143Nd/144Nd = 0.512764) of Central Andes Neogene backarc volcanism between 24°S and 27°S. They show trace-element patterns recalling backarc Pliocene-Quaternary intraplate mafi c rocks, but they show lower silica and higher alkali contents, and are interpreted to derive from the depleted subcontinental mantle.