1 Early Jurassic Magmatism on the Antarctic Peninsula and Potential Correlation with The
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Antarctic Peninsula
Hucke-Gaete, R, Torres, D. & Vallejos, V. 1997c. Entanglement of Antarctic fur seals, Arctocephalus gazella, by marine debris at Cape Shirreff and San Telmo Islets, Livingston Island, Antarctica: 1998-1997. Serie Científica Instituto Antártico Chileno 47: 123-135. Hucke-Gaete, R., Osman, L.P., Moreno, C.A. & Torres, D. 2004. Examining natural population growth from near extinction: the case of the Antarctic fur seal at the South Shetlands, Antarctica. Polar Biology 27 (5): 304–311 Huckstadt, L., Costa, D. P., McDonald, B. I., Tremblay, Y., Crocker, D. E., Goebel, M. E. & Fedak, M. E. 2006. Habitat Selection and Foraging Behavior of Southern Elephant Seals in the Western Antarctic Peninsula. American Geophysical Union, Fall Meeting 2006, abstract #OS33A-1684. INACH (Instituto Antártico Chileno) 2010. Chilean Antarctic Program of Scientific Research 2009-2010. Chilean Antarctic Institute Research Projects Department. Santiago, Chile. Kawaguchi, S., Nicol, S., Taki, K. & Naganobu, M. 2006. Fishing ground selection in the Antarctic krill fishery: Trends in patterns across years, seasons and nations. CCAMLR Science, 13: 117–141. Krause, D. J., Goebel, M. E., Marshall, G. J., & Abernathy, K. (2015). Novel foraging strategies observed in a growing leopard seal (Hydrurga leptonyx) population at Livingston Island, Antarctic Peninsula. Animal Biotelemetry, 3:24. Krause, D.J., Goebel, M.E., Marshall. G.J. & Abernathy, K. In Press. Summer diving and haul-out behavior of leopard seals (Hydrurga leptonyx) near mesopredator breeding colonies at Livingston Island, Antarctic Peninsula. Marine Mammal Science.Leppe, M., Fernandoy, F., Palma-Heldt, S. & Moisan, P 2004. Flora mesozoica en los depósitos morrénicos de cabo Shirreff, isla Livingston, Shetland del Sur, Península Antártica, in Actas del 10º Congreso Geológico Chileno. -
New Paleomagnetic Pole for the Upper Jurassic Chon
Tectonophysics 750 (2019) 45–55 Contents lists available at ScienceDirect Tectonophysics journal homepage: www.elsevier.com/locate/tecto New paleomagnetic pole for the Upper Jurassic Chon Aike Formation of T southern Argentina (South America): Testing the tectonic stability of Patagonia with respect to South America, and implications to Middle Jurassic-Early Cretaceous true polar wander ⁎ Víctor Ruiz Gonzáleza, , Carla G. Puigdomenecha, Emiliano M. Rendaa, Bárbara Boltshausera, Rubén Somozaa, Haroldo Vizána, Claudia B. Zaffaranab, Graeme K. Taylorc, Miguel Hallerd, Raúl Fernándeze a IGEBA, UBA – CONICET, Argentina b IIPG, UNRN – CONICET, Argentina c Plymouth University, United Kingdom d CENPAT, CONICET – UNPSJB, Argentina e INREMI, UNLP, Argentina ARTICLE INFO ABSTRACT Keywords: A paleomagnetic pole and a new Ar-Ar date of 156.08 ± 0.05 Ma are reported for the Chon Aike Formation, an Chon Aike Formation extensive plateau of ignimbrites, outcropping in the Deseado Massif (southern Patagonia, Argentina). The Deseado Massif geographic coordinates and statistical parameters for the paleomagnetic pole, validated by a reversal test, are: South America Lat. = 84.3° S, Long. = 191.3° E, A95 = 8.6°, K = 13.3, N = 23. This pole shows a complete coherence with Late Paleomagnetism Jurassic and Early to mid-Cretaceous poles of South America, obtained exclusively from igneous rocks, avoiding Apparent polar wander path any potential inclination shallowing. It is suggested that; a) southern Patagonia was an integral part of South America in the Late Jurassic; b) any reported vertical axis tectonic rotations must pre-date the Late Jurassic in this region; c) according to updated paleomagnetic data from igneous rocks, South America had very limited latitudinal drift between about 160 and 140 Ma; and, therefore, d) its apparent polar wander (APW) path, when compared with global apparent polar wander paths, does not support a large global shift or true polar wander (TPW) between 160 and 140 Ma. -
Geochemical Characteristics of the Infilling of Ground Wedges at Puerto Deseado (Santa Cruz, Argentina): Palaeoenvironmental and Chronological Implications
Andean Geology ISSN: 0718-7092 ISSN: 0718-7106 [email protected] Servicio Nacional de Geología y Minería Chile Geochemical characteristics of the infilling of ground wedges at Puerto Deseado (Santa Cruz, Argentina): palaeoenvironmental and chronological implications Zanchetta, Giovanni; Ribolini, Adriano; Ferrari, Matteo; Bini, Monica; Isola, Ilaria; Lezzerini, Marco; Baroni, Carlo; Salvatore, Maria Cristina; Pappalardo, Marta; Fucks, Enrique; Boretto, Gabriella Geochemical characteristics of the infilling of ground wedges at Puerto Deseado (Santa Cruz, Argentina): palaeoenvironmental and chronological implications Andean Geology, vol. 45, no. 2, 2018 Servicio Nacional de Geología y Minería, Chile Available in: https://www.redalyc.org/articulo.oa?id=173955659002 DOI: https://doi.org/10.5027/andgeoV45n2-3070 PDF generated from XML JATS4R by Redalyc Project academic non-profit, developed under the open access initiative Andean Geology, 2018, vol. 45, no. 2, ISSN: 0718-7092 0718-7106 Artículos de Investigación Geochemical characteristics of the infilling of ground wedges at Puerto Deseado (Santa Cruz, Argentina): palaeoenvironmental and chronological implications Características geoquímicas de las cuñas de hielo en Puerto Deseado (Santa Cruz, Argentina): implicancias paleoambientales y cronológicas Giovanni Zanchetta DOI: https://doi.org/10.5027/andgeoV45n2-3070 Istituto Nazionale Geofisica e Vulcanologia Roma, Italia Redalyc: https://www.redalyc.org/articulo.oa? [email protected] id=173955659002 Adriano Ribolini University -
Federal Register/Vol. 84, No. 78/Tuesday, April 23, 2019/Rules
Federal Register / Vol. 84, No. 78 / Tuesday, April 23, 2019 / Rules and Regulations 16791 U.S.C. 3501 et seq., nor does it require Agricultural commodities, Pesticides SUPPLEMENTARY INFORMATION: The any special considerations under and pests, Reporting and recordkeeping Antarctic Conservation Act of 1978, as Executive Order 12898, entitled requirements. amended (‘‘ACA’’) (16 U.S.C. 2401, et ‘‘Federal Actions to Address Dated: April 12, 2019. seq.) implements the Protocol on Environmental Justice in Minority Environmental Protection to the Richard P. Keigwin, Jr., Populations and Low-Income Antarctic Treaty (‘‘the Protocol’’). Populations’’ (59 FR 7629, February 16, Director, Office of Pesticide Programs. Annex V contains provisions for the 1994). Therefore, 40 CFR chapter I is protection of specially designated areas Since tolerances and exemptions that amended as follows: specially managed areas and historic are established on the basis of a petition sites and monuments. Section 2405 of under FFDCA section 408(d), such as PART 180—[AMENDED] title 16 of the ACA directs the Director the tolerance exemption in this action, of the National Science Foundation to ■ do not require the issuance of a 1. The authority citation for part 180 issue such regulations as are necessary proposed rule, the requirements of the continues to read as follows: and appropriate to implement Annex V Regulatory Flexibility Act (5 U.S.C. 601 Authority: 21 U.S.C. 321(q), 346a and 371. to the Protocol. et seq.) do not apply. ■ 2. Add § 180.1365 to subpart D to read The Antarctic Treaty Parties, which This action directly regulates growers, as follows: includes the United States, periodically food processors, food handlers, and food adopt measures to establish, consolidate retailers, not States or tribes. -
ARC Centre of Excellence in Ore Deposits
Università degli Studi di Padova University of Tasmania DIPARTIMENTO DI GEOSCIENZE CODES - ARC Centre of Excellence in Ore Deposits ________________________________________________________________ SCUOLA DI DOTTORATO DI RICERCA IN: SCIENZE DELLA TERRA CICLO XXVI Jurassic magmatism in Patagonia, Mauritania and Mali: Examples of silicic and basaltic Large Igneous Provinces Direttore della Scuola: Ch.mo Prof. Massimiliano Zattin Supervisore: Ch.mo Prof. Andrea Marzoli Co-supervisore: Ch.mo Prof. Vadim Kamenetsky Dottorando: Lina Maria Serrano Duran ABSTRACT At the end of the Triassic and during Jurassic times, the Central Atlantic Magmatic Province (CAMP) with a dominant mafic composition, and the mainly felsic Patagonian Province (PA) were formed in the context of Pangea break-up. CAMP basaltic to basaltic-andesitic dykes and sills from Hank and Hodh, in Mauritania, and Kaarta, in Mali, were emplaced at ca. 197 Ma yielding a signature defined by low to high TiO2-values (0.39 - 2.29 wt.%), Nb-Ta troughs, Pb spikes and enriched Nd-Sr-Pb 143 144 87 86 207 204 compositions ( Nd/ Nd201Ma: 0.51224 - 0.51241, Sr/ Sr201Ma: 0.70572 - 0.70795, Pb/ Pb201Ma: 208 204 206 204 15.61 – 15.68 Pb/ Pb201Ma: 38.44 – 38.07 and Pb/ Pb201Ma: 18.11 – 18.48). Nb/U ratios (= 12 – 15), tracers of recycled material, combined with enriched isotopic signatures suggest the contribution of continental crust in the origin of these magmas. Differences in the ratios of La/Yb of the whole set suggest the existence of an enriched group in Kaarta (La/YbN>4.3) coupled to increasing ratios of Nb/Zr and Th/Y, probably reflecting lower degrees of partial melting in these rocks. -
40Ar/39Ar Dating of the Jurassic Volcanic Province Of
Reprinted from EARTH AND PLANETARY SCIENCE LETTERS Earth and Planetary Science Letters 172 1999) 83-96 40Ar/39Ardating of the Jurassic volcanic province of Patagonia: migrating magmatism related to Gondwana break-up and subduction a, G. Féraud a+, V. Alric ab, M Fomari H. Bertrand ', M. Haller a UMR 6526 Géoscience Azul; CNRS-IRD, Université d Nice-Sophia Antipolis, Parc Valrose, 06108 Nice Cedex 02, France ' Universidad Nacional de la Patagonia JSan Juan Bosco, Puerto Madryn, Cliubut, Argeritina Laboratoire de Géologie, UMR 5570 CNRS, Ecole Normale Supérieure de Lyon et UCBL, 46 Allée d'Italie, 69364 Lyon Cedex 07, France Received 20 January 1999; revised version received 24 June 1999; accepted 29 July 1999 EARTH AND PLANETARY SCIENCE LETTERS EDITORS Dr. F. Albarède Prof. A.N. Halliday Prof. R.J. O’Connel1 Ecole Normale SupCrieure de Lyon Institute for Isotope Geology and Mineral Department of Earth and Planetary Sciences 46 Allée d’Italie Resources Harvard University 69364 Lyon Cedex 07, France Department of Earth Sciences 20 Oxford Street, Tel.: (33) 4727-28414 ETH Zentrum, Sonneggstrasse 5, NO Cambridge, MA 02138, USA Fax: (33) 4727-28080 CH-8092 Zürich, Switzerland Tel.: (1) (617) 495-2532 E-mail [email protected] Tel.: (41) 1 632-7525/Fax: (41) 1 632-11.79 Fax: (1) (617) 495-8834 E-mail: halliday [email protected] , E-mail: [email protected] Dr. A. Cazenave Prof. C. Langmuir Dr. R. van der Voo LEGOS - CNESKNRS Lamont-Doherty Earth Observatory Department of Geological Sciences 18, Avenue Edouard Belin Palisades, NY 10964, USA University of Michigan, F-31401 Toulouse Cedex 4, France Tel.: (1) (914) 365-8657 2534 C.C. -
Technical Report Gold –Silver Resource Estimate of the La Josefina Project Santa Cruz, Argentina
Technical Report Gold –Silver Resource Estimate of the La Josefina Project Santa Cruz, Argentina C. Gustavo Fernandez, P. Geo. UAKO Consultora Geológica September 29th, 2010. Prepared for Hunt Mining Corp. Gold - Silver Resource Estimate for the La Josefina Project Page 1 Contents 1.0 Summary ................................................................................................................................. 8 2.0 Introduction .......................................................................................................................... 13 2.1. Project Scope and Terms of Reference ................................................................................ 14 2.2. Frequently used acronyms, abbreviations, definitions and units of measure ................... 14 3.0 Reliance on other experts .................................................................................................... 15 4.0 Property description and location ....................................................................................... 15 4.1. General ................................................................................................................................. 15 4.2. Mineral tenure...................................................................................................................... 17 4.3. Cerro Cazador – Fomicruz agreement................................................................................. 20 4.4. Royalties .............................................................................................................................. -
Public Information Leaflet HISTORY.Indd
British Antarctic Survey History The United Kingdom has a long and distinguished record of scientific exploration in Antarctica. Before the creation of the British Antarctic Survey (BAS), there were many surveying and scientific expeditions that laid the foundations for modern polar science. These ranged from Captain Cook’s naval voyages of the 18th century, to the famous expeditions led by Scott and Shackleton, to a secret wartime operation to secure British interests in Antarctica. Today, BAS is a world leader in polar science, maintaining the UK’s long history of Antarctic discovery and scientific endeavour. The early years Britain’s interests in Antarctica started with the first circumnavigation of the Antarctic continent by Captain James Cook during his voyage of 1772-75. Cook sailed his two ships, HMS Resolution and HMS Adventure, into the pack ice reaching as far as 71°10' south and crossing the Antarctic Circle for the first time. He discovered South Georgia and the South Sandwich Islands although he did not set eyes on the Antarctic continent itself. His reports of fur seals led many sealers from Britain and the United States to head to the Antarctic to begin a long and unsustainable exploitation of the Southern Ocean. Image: Unloading cargo for the construction of ‘Base A’ on Goudier Island, Antarctic Peninsula (1944). During the late 18th and early 19th centuries, interest in Antarctica was largely focused on the exploitation of its surrounding waters by sealers and whalers. The discovery of the South Shetland Islands is attributed to Captain William Smith who was blown off course when sailing around Cape Horn in 1819. -
Raga 63.4 Corregida.Qxp
Revista de la Asociación Geológica Argentina 63 (4): 665 - 681 (2008) 665 LOS DEPÓSITOS DE ORO Y PLATA VINCULADOS AL MAGMATISMO JURÁSICO DE LA PATAGONIA: REVISIÓN Y PERSPECTIVAS PARA LA EXPLORACIÓN Raúl R. FERNÁNDEZ1,2, Adriana BLESA1,3,a, Pilar MOREIRA1,3, Horacio ECHEVESTE1,2, Karina MYKIETIUK1,3,b, Pablo ANDRADA DE PALOMERA4 y Mario TESSONE1 1 Instituto de Recursos Minerales (INREMI). Facultad de Ciencias Naturales y Museo (UNLP-CICBA) La Plata. Email: [email protected] 2 Comisión de Investigaciones Científicas de la provincia de Buenos Aires (CICBA) 3 Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) 4 Fomento Minero de Santa Cruz (FOMICRUZ S.E.). Río Gallegos, Santa Cruz. a Actualmente RTZ Argentina b Actualmente Medanitos SA RESUMEN La importancia del magmatismo jurásico de la Patagonia con relación a mineralizaciones de Au-Ag, ha sido reconocida desde hace menos de 20 años y al presente se definieron recursos por más de 700 t de Au equivalente contenido, en tres depósitos de clase mundial (>100 t AuEq contenido), algunos depósitos menores y numerosos prospectos en exploración. Se alojan en rocas volcánicas y volcano-sedimentarias jurásicas (o más antiguas), silíceas y mesosilíceas generadas en ambientes de arco y retro-arco de las regiones andina y extra-andina. Por sus características mineralógicas, texturales y geoquímicas corresponden a depósitos epitermales asociados principalmente a la paragénesis cuarzo + calcita + adularia + illita que acompañan a los depósitos de sulfuración baja e intermedia. Por su contenido metálico se dividieron en: a) Au-Ag y Ag>Au, b) polimetálicos con Ag-Au o sólo Ag, y c) polimetálicos complejos con Ag-Au. -
Magnetic Granulometry of Igneous and Metasedimentary Rocks from Northern Graham Land, Antarctic Peninsula Stefanie A
Montclair State University Montclair State University Digital Commons Department of Earth and Environmental Studies Department of Earth and Environmental Studies Faculty Scholarship and Creative Works 2004 Magnetic Granulometry of Igneous and Metasedimentary Rocks from Northern Graham Land, Antarctic Peninsula Stefanie A. Brachfeld University of Minnesota, [email protected] Anne Grunow Ohio State University Emily Youcha University of Alaska, Fairbanks Follow this and additional works at: https://digitalcommons.montclair.edu/earth-environ-studies- facpubs Part of the Earth Sciences Commons MSU Digital Commons Citation Brachfeld, Stefanie A.; Grunow, Anne; and Youcha, Emily, "Magnetic Granulometry of Igneous and Metasedimentary Rocks from Northern Graham Land, Antarctic Peninsula" (2004). Department of Earth and Environmental Studies Faculty Scholarship and Creative Works. 24. https://digitalcommons.montclair.edu/earth-environ-studies-facpubs/24 Published Citation Brachfeld, S., Grunow, A., & Youcha, E. (2004). Magnetic properties of igneous and meta-sedimentary rocks from Graham Land, Antarctic Peninsula. Antarctic Journal of the United States, 33(8), 298-303. This Article is brought to you for free and open access by the Department of Earth and Environmental Studies at Montclair State University Digital Commons. It has been accepted for inclusion in Department of Earth and Environmental Studies Faculty Scholarship and Creative Works by an authorized administrator of Montclair State University Digital Commons. For more information, -
SECTION THREE: Historic Sites and Monuments in Antarctica
SECTION THREE: Historic Sites and Monuments in Antarctica The need to protect historic sites and monuments became apparent as the number of expeditions to the Antarctic increased. At the Seventh Antarctic Treaty Consultative Meeting it was agreed that a list of historic sites and monuments be created. So far 74 sites have been identified. All of them are monuments – human artifacts rather than areas – and many of them are in close proximity to scientific stations. Provision for protection of these sites is contained in Annex V, Article 8. Listed Historic Sites and Monuments may not be damaged, removed, or destroyed. 315 List of Historic Sites and Monuments Identified and Described by the Proposing Government or Governments 1. Flag mast erected in December 1965 at the South Geographical Pole by the First Argentine Overland Polar Expedition. 2. Rock cairn and plaques at Syowa Station (Lat 69°00’S, Long 39°35’E) in memory of Shin Fukushima, a member of the 4th Japanese Antarctic Research Expedition, who died in October 1960 while performing official duties. The cairn was erected on 11 January 1961, by his colleagues. Some of his ashes repose in the cairn. 3. Rock cairn and plaque on Proclamation Island, Enderby Land, erected in January 1930 by Sir Douglas Mawson (Lat 65°51’S, Long 53°41’E) The cairn and plaque commemorate the landing on Proclamation Island of Sir Douglas Mawson with a party from the British, Australian and New Zealand Antarctic Research Expedition of 1929 31. 4. Station building to which a bust of V. I. Lenin is fixed, together with a plaque in memory of the conquest of the Pole of Inaccessibility by Soviet Antarctic explorers in 1958 (Lat 83°06’S, Long 54°58’E). -
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Vol. 45 - N. 2 SUPPLEMENT Bollettino di Geofisica teorica ed applicata An International Journal of Earth Sciences Guest Editors: J. Carcione, F. Donda, E. Lodolo International Symposium on the Geology and Geophysics of the Southernmost Andes, the Scotia Arc and the Antarctic Peninsula Extended Abstracts of the GeoSur2004 International Symposium 22-23 November, 2004 Buenos Aires, Argentina Istituto Nazionale di Oceanografia ISSN 0006-6729 e di Geofisica Sperimentale Responsibility for all statements made in B.G.T.A. lies with the authors Cover design and typesetting: Nino Bon – OGS Printing: Centro Box SRL – Buenos Aires, Argentina Authorized by the Tribunale di Trieste, n. 242, September 17, 1960 INTERNATIONAL SYMPOSIUM International Symposium on the Geology and Geophysics of the Southernmost Andes, the Scotia Arc and the Antarctic Peninsula 22-23 November 2004 Buenos Aires, Argentina EXTENDED ABSTRACTS GEOSUR2004 22-23 NOVEMBER 2004 – BUENOS AIRES ORGANIZERS ISTITUTO NAZIONALE DI OCEANOGRAFIA E DI GEOFISICA SPERIMENTALE - OGS, TRIESTE, ITALY INSTITUTO DE GEOFÍSICA “DANIEL A. VALENCIO”, DEPARTAMENTO DE GEOLOGÍA, UNIVERSIDAD DE BUENOS AIRES, ARGENTINA SPONSORS ITALIAN EMBASSY IN ARGENTINA PROGRAMMA NAZIONALE DI RICERCHE IN ANTARTIDE (P.N.R.A.) EAGE-SEG Italian Section 4 GEOSUR2004 22-23 NOVEMBER 2004 – BUENOS AIRES SCIENTIFIC COMMITTEE G. BRANCOLINI - OGS, Trieste A. CAMERLENGHI - OGS, Trieste M. CANALS - University of Barcelona J.M. CARCIONE - OGS, Trieste A.H. COMÍNGUEZ - CONICET, University of La Plata I.W.D. DALZIEL - University of Texas at Austin E. DOMACK - Hamilton College, New York F. HERVÉ - University of Santiago R. LARTER - British Antarctic Survey S. MARENSSI - IAA, Buenos Aires G. PANZA - University of Trieste C.