DOCSLIB.ORG

Geological Investigations on Seymour Island,* Antarctic Peninsula

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Geological Investigations on Seymour Island,* Antarctic Peninsula the range contain more rocks of intermediate com- Geological investigations position than previously thought (Daiziel et al., 1974a). The volcanics thus may represent a rem- on Seymour Island, nant arc behind the Lower Cretaceous marginal Antarctic Peninsula basin recently recognized in the Southern Andes (Daiziel et al., 1974b). (3) Andean Precordillera. Detailed structural map- D. H. ELLIOT 1 , C. RINALDI 2 , W. J . ZINSMEISTER1, ping of the east-west trending part of the Precor- T. A. TRAUTMAN 1 , W. A. BRYANT 3 , and dillera north of Cordillera Darwin was begun by R. DEL VALLE4 Ms. Winslow, assisted by Linda Raedeke, University of Washington. Institute of Polar Studies and (4) Patagonian batholith. Dr. Stern, assisted by Department of Geology and Mineralogy Janet Stroup, Lamont-Doherty Geological Obser- The Ohio State University vatory, and by M. Alexandra Skewes, Universidad Columbus, Ohio 43210 de Chile, traversed the Patagonian batholith north of the Strait of Magellan to collect samples for 2Comisi6n Nacional de Energia Atómica later petrologic and geochemical studies. Buenos Aires, Argentina (5) Cenozoic and Recent igneous bodies. Dr. Stern Department of Geology and party also studied and collected from such late Northern Illinois University Cenozoic plutons of the Andean Precordillera as DeKalb, Illinois 60115 Cerro Paine, and the recently active volcanoes, such as Monte Burney. 4Direcc16n Nacional del Antártico Instituto Antártico Argentino We thank Captain Pieter Lenie and the crew of Buenos Aires, Argentina RIV Hero for their enthusiastic support of Dr. de Wits party. The work in Chile was supported by the Empresa Nacional del Petróleo. The assistance Seymour Island, about 100 kilometers southeast of Srs. Eduardo Gonzalez, Salvador Harambour, of the Antarctic Peninsula (figure 1), has the only Bernardo Bergman, and Raül Cortés was in- known exposed marine Lower Tertiary in Antarc- valuable. Finally, we thank the Chilean navy for tica. The island, first sighted by James Clark Ross transportation in the Beagle Channel. in 1843, has considerable historical interest. An This project is supported by National Science O expedition under Norwegian whaling captain C. A. Foundation grants pp 74-21415, Gx-34410, and Larsen visited the island in 1893 and made the first DES 75-04076. collections of Tertiary fossils (Sharman and New- ton, 1894, 1898); it was more extensively sampled by the Swedish South Polar Expedition (1901 to References 1903), which discovered fossil plants, penguins, and Cretaceous invertebrates, and also established an Daiziel, I. W. D. 1971. Structural studies in the Scotia Arc: the South Orkney Islands. WV Hero Cruise 71-I. Antarctic Jour- outline of the geologic history of the northern nal of the U.S., VI(4): 124-126. Antarctic Peninsula (Andersson, 1906; Norden- Dalziel, I. W. D. 1974. Evolution of the margins of the Scotia skjöld, 1905, 1913). Sea. In: The Geology of Continental Margins (Burk, C. A., and The island was examined briefly in 1953 and C. L. Drake, editors). New York, Springer-Verlag. 567-579. Daiziel, I. W. D., R. Caminos, K. F. Palmer, F. Nullo, and R. 1954 by members of the Falkland Islands Depen- Casanova. 1974a. Southern extremity of the Andes: geology dencies Survey (now the British Antarctic Survey) of Isla de los Estados, Argentine Tierra del Fuego. Ameri- (Adie, 1958), but no extensive studies were con- can Association of Petroleum Geologists. Bulletin, 58(12): ducted until the 1973-1974 season when geologists 2502-2512. Dalziel, I. W. D., and R. Cortés. 1972. Tectonic style of the from the Instituto Antártico Argentino mapped southernmost Andes and the Antarctandes. 24th Internaitonal most of the island. Four geologists from the Insti- Geological Congress, Montreal, August 1972. 316-327. tute of Polar Studies, The Ohio State University, Dalziel, 1. W. D., M. J . de Wit, and K. F. Palmer. 1974b. A fossil and from Northern Illinois University, were invited marginal basin in the southern Andes. Nature, 250: 291-294. Dalziel, I. W. D., David P. Price, and Gerry L. Stirewalt. 1970. Structural studies in the Scotia Arc: Elephant Island, Gibbs Island, Hope Bay, and Livingston Island. Antarctic Journal Isla Vicecomodoro Marambio is the name given on Argentine of the U.S., V(4): 100-101. maps. 182 ANTARCTIC JOURNAL by the Instituto Antártico Argentino to participate sandstones in which fossils are concentrated; as ex- in their 1974-1975 field project on Seymour Island. pected, the shell banks are diachronous and die out The U.S. groups objective was to do a detailed study laterally. The shell banks of unit V do not appear of the stratigraphy, sedimentary petrology, and to differ except in their fossil content, and the inter- paleontology of the Tertiary strata to complement vening sands may also contain scattered molluscs. studies made the previous year by Argentine The bulk of the section is unconsolidated and con- geologists. sists of the following: laminated, fine-grained, gray sand alternating with dark, silty clay layers; light gray, well-sorted fine sand; mottled brownish gray Stratigraphy. Tertiary strata crop out on the north- to greenish gray bioturbated silty sand. ern part of the island and are centered about a Throughout the section the loose sands contain meseta with an elevation of about 200 meters concretionary horizons that may be laterally very (figure 2). The Tertiary is in fault contact with extensive. The concretions range in size up to 1.5 possible Cretaceous beds at the islands northern meters across, and some contain shell fragments point. The contact with the Cretaceous south of in their centers. Sheet-like pebble beds are very the meseta in Cross Valley is also faulted, though sparsely distributed throughout the section and in two places in a fault sliver an unconformity may consist of well-rounded clasts of volcanic, plutonic, be exposed. and sedimentary rocks. The clasts range up to 30 The Tertiary strata (figure 3) appear to be dis- centimeters across. The clasts indicate a provenance posed in a broad syncline with maximum dips on similar to the terrain now exposed to the north- the northeast limb attaining 10°; the syncline west, on the Antarctic Peninsula: the upper Paleo- plunges very gently to the southeast. The structure zoic Trinity Peninsula Series, acidic volcanic rocks is partly obscured by slumping. Probable Tertiary probably of Late Jurassic age, and "Andean" plu- strata also crop out in the fault slivers in Cross tonic rocks that may range in age from Early Juras- Valley; their relation to the rest of the Tertiary sic to Tertiary (Adie, 1972). sequence is uncertain, although it seems likely that Sedimentary structures include ripple-drift they are older. cross-lamination sets (figure 6), planar cross bed- The older (?) Tertiary strata (figure 4, unit I) con- ding, oscillation ripple marks, and both small- and sist of about 80 meters of immature, coarse sand large-scale cut and fill channels. Direction of sedi- that passes up into prominent pebbly bluffs. Above ment transport is inferred to have been south- the coarse sand and pebbly unit there are about easterly and away from a northeast to southwest- 22 meters of loose sand and clayey sand with sparsely distributed resistant beds. The loose sand has pronounced yellow limonitic (?) staining, con- tains sparse concretions, and locally carries fossil 58W -56W wood and coalified plant debris. The thin resistant tille sandstone beds also contain plant and wood debris. st(ott field Hope The remainder of the Tertiary sequence crops Boy out around the meseta. The oldest beds are exposed along a coastal cliff at the northwest end of Cross Valley, but because of faulting and the apparently unfossiliferous character of the beds the thickness there is difficult to determine. Much better expo- Erebus and sures occur at the northern end of the island where iij11j 2 about 150 meters of very poorly consolidated, thinly _J rf\$ASI) Terror Gulf bedded, fine-grained sand and silty sand (figure 4, 64S " 64S unit II) crop out below the lowest of the fossil shell ( banks that characterize much of the overlying unit JamesJo Ross L- (unit III). The remainder of the section, more 9 than 200 meters thick, can be divided into three Seymour units (figure 4, units III, IV, and V). Unit III is Island characterized by shell banks up to 1.5 meters thick Snow Hill Weddell that have abundant and very well preserved inver- Island Cope Longing Sea tebrate faunas (figure 5). Unit IV lacks shell banks, 9 50 km whereas unit V includes thin shell banks; the fossils 58W 56W in unit V are less abundant, and in many cases more restricted in type, than in unit III. The shell banks Figure 1. Location map for the James Ross and Seymour in unit III are pebbly to cobbly, medium to coarse islands area. July/August 1975 183 - measured stratigraphic section 560 4k W Cape Wlman -- fault, location approximate, fault trace generalized -9 Strike and dip of strata U 0 Upper Tertiary to Quaternary glacial deposits on top of the meseta Lower Tertiary strata Cretaceous strata• Bodman beds near Cape Wiman Point are provisionally given this age 640 15 S 5 S Figure 2. Location and re- U connaissance geological U sketch map of Seymour Is- Seymou land (Argentine maps give alternate names for some features). The age of the Istand beds adjacent to Cape WI- man is uncertain, but here the beds are provisionally assigned to the Creta- ceous. The faulting in Cross Valley is much more complex than illustrated, 0 km 5 and fault slivers include 56°45 W both Cretaceous and Ter- tiary strata. trending shoreline. These clastic sediments were island were examined and consist of about 230 probably deposited in a high-energy, nearshore meters of very poorly consolidated sand with sparse deltaic and shallow marine environment.
Load more

Recommended publications
  • Depositional Settings of the Basal López De Bertodano Formation, Maastrichtian, Antarctica
    Revista de la Asociación Geológica Argentina 62 (4): 521-529 (2007) 521 DEPOSITIONAL SETTINGS OF THE BASAL LÓPEZ DE BERTODANO FORMATION, MAASTRICHTIAN, ANTARCTICA Eduardo B. OLIVERO1, Juan J. PONCE1, Claudia A. MARSICANO2, and Daniel R. MARTINIONI1 ¹ Laboratorio de Geología Andina, CADIC-CONICET, B. Houssay 200, CC 92, 9410 Ushuaia, Tierra del Fuego, Argentina. E-Mail: [email protected] 2 Dpto. Cs. Geológicas, Universidad Buenos Aires, Ciudad Universitaria Pab. II, C1428 DHE Buenos Aires. ABSTRACT: In Snow Hill and Seymour islands the lower Maastrichtian, basal part of the López de Bertodano Formation, rests on a high relief, erosi- ve surface elaborated in the underlying Snow Hill Island Formation. Mudstone-dominated beds with inclined heterolithic stratification dominate the basal strata of the López de Bertodano Formation. They consist of rhythmical alternations of friable sandy- and clayey- mudstone couplets, with ripple cross lamination, mud drapes, and flaser bedding. They are characterized by a marked lenticular geometry, reflecting the filling of tide-influenced channels of various scales and paleogeographic positions within a tide-dominated embayment or estuary. Major, sand-rich channel fills, up to 50-m thick, bounded by erosive surfaces probably represent inlets, located on a more central position in the estuary. Minor channel fills, 1- to 3-m thick, associated with offlapping packages with inclined heterolithic stratification pro- bably represent the lateral accretion of point bars adjacent to migrating tidal channels in the upper estuary. Both types of channel fills bear relatively abundant marine fauna, are intensively bioturbated, and are interpreted as a network of subtidal channels. In southwestern Snow Hill Island, the minor offlapping packages have scarce marine fossils and bear aligned depressions interpreted as poor preserved dinosaur footprints.
    [Show full text]
  • 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.
    [Show full text]
  • 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.
    [Show full text]
  • Towards Interactive Global Paleogeographic Maps, New Reconstructions at 60, 40 and 20 Ma
    Earth-Science Reviews 214 (2021) 103508 Contents lists available at ScienceDirect Earth-Science Reviews journal homepage: www.elsevier.com/locate/earscirev Towards interactive global paleogeographic maps, new reconstructions at 60, 40 and 20 Ma F. Poblete a,b,*, G. Dupont-Nivet a,c, A. Licht d, D.J.J. van Hinsbergen e, P. Roperch a, M. G. Mihalynuk f, S.T. Johnston g, F. Guillocheau a, G. Baby a, F. Fluteau h, C. Robin a, T.J. M. van der Linden e,i, D. Ruiz c, M.L.J. Baatsen j a G´eosciences Rennes, UMR CNRS 6118, Rennes, 35042 Rennes Cedex, France b Departamento de Geología, Facultad de Ciencias Físicas y Matematicas,´ Universidad de Chile, Chile c Universitat¨ Potsdam, Institute of Geoscience, 14476 Potsdam, Germany d Centre Europ´een de Recherche et d’Enseignement des G´eosciences de l’Environnement (Cerege), UMR CNRS 7330, 13545 Aix-en-Provence, France e Department of Earth Sciences, Utrecht University, Princetonlaan 8a, 3584 CB, Utrecht, the Netherlands f British Columbia Geological Survey, Vancouver, Canada g Department of Earth and Atmospheric Sciences, University of Alberta, Canada h Universit´e de Paris, Institut de physique du globe de Paris, CNRS, F-75005 Paris, France i Thomas van der Linden – LinGeo, Berlin, Germany j IMAU, Utrecht University, Princetonplein 5, 3584CC Utrecht, the Netherlands ARTICLE INFO ABSTRACT Keywords: Paleogeographic maps are essential tools for understanding Earth system dynamics. They provide boundary Paleogeographic maps conditions for climate and geodynamic modelling, for analysing surface processes and biotic interactions. Paleoelevation However, the temporal and spatial distribution of key features such as seaways and mountain belts that govern Cenozoic climate changes and biotic interchange differ between various paleogeographies that require regular updates Eocene-Oligocene transition with new data and models.
    [Show full text]
  • A NTARCTIC Southpole-Sium
    N ORWAY A N D THE A N TARCTIC SouthPole-sium v.3 Oslo, Norway • 12-14 May 2017 Compiled and produced by Robert B. Stephenson. E & TP-32 2 Norway and the Antarctic 3 This edition of 100 copies was issued by The Erebus & Terror Press, Jaffrey, New Hampshire, for those attending the SouthPole-sium v.3 Oslo, Norway 12-14 May 2017. Printed at Savron Graphics Jaffrey, New Hampshire May 2017 ❦ 4 Norway and the Antarctic A Timeline to 2006 • Late 18th Vessels from several nations explore around the unknown century continent in the south, and seal hunting began on the islands around the Antarctic. • 1820 Probably the first sighting of land in Antarctica. The British Williams exploration party led by Captain William Smith discovered the northwest coast of the Antarctic Peninsula. The Russian Vostok and Mirnyy expedition led by Thaddeus Thadevich Bellingshausen sighted parts of the continental coast (Dronning Maud Land) without recognizing what they had seen. They discovered Peter I Island in January of 1821. • 1841 James Clark Ross sailed with the Erebus and the Terror through the ice in the Ross Sea, and mapped 900 kilometres of the coast. He discovered Ross Island and Mount Erebus. • 1892-93 Financed by Chr. Christensen from Sandefjord, C. A. Larsen sailed the Jason in search of new whaling grounds. The first fossils in Antarctica were discovered on Seymour Island, and the eastern part of the Antarctic Peninsula was explored to 68° 10’ S. Large stocks of whale were reported in the Antarctic and near South Georgia, and this discovery paved the way for the large-scale whaling industry and activity in the south.
    [Show full text]
  • Numbers of Adelie Penguins Breeding at Hope Bay and Seymour Island Rookeries (West Antarctica) in 1985
    POLISH POLAR RESEARCH (POL. POLAR RES.) 8 4 411—422. 1987 Andrzej MYRCHA", Andrzej TATUR2» and Rodolfo del VALLE3) " Institute of Biology, Warsaw University, Branch in Białystok, 64 Sosnowa. 15-887 Białystok, POLAND 2) Department of Biogeochemistry, Institute of Ecology, Polish Academy of Sciences, Dziekanów Leśny. 05-092 Łomianki. POLAND 31 Instituto Antarctico Ąrgcntino, Cerrito 1248. Capital Federal, ARGENTINA Numbers of Adelie penguins breeding at Hope Bay and Seymour Island rookeries (West Antarctica) in 1985 ABSTRACT: At the turn of October 1985, the abundance of breeding Adelie penguins was estimated at the Hope Bay oasis on the Antarctic Peninsula and on Seymour Island. In the Hope Bay rookery, 123850 pairs of penguins were recorded, beginning their breeding at the end of October. Data so far obtained indicate a continuous increase in the number of birds sat this rookery. On the other hand, the Seymour Island colony consisted of 21954 pairs of Adelie penguins. Clear differences in the geomorphological structure of areas occupied by penguins in those two places are discussed. No gentoo penguins were detected in either of the colonies. Key words: Antarctica. Hope Bay, Seymour Island, Adelie penguins. 1. Introduction Birds occurring in south polar regions for long have attracted much attention due to their importance in the functioning of the marine Antarctic ecosystem. The great abundance of these few species makes them play a significant role in the economy of energy of the Southern Ocean (Croxall 1984, Laws 1985). Among these birds penguins are dominant, comprising over 90% of the bird biomass in this region. The Adelie penguins, in turn, are one of the most numerous of the Antarctic species.
    [Show full text]
  • 29. Evolution of the Southwestern Atlantic Ocean Basin
    29. EVOLUTION OF THE SOUTHWESTERN ATLANTIC OCEAN BASIN: RESULTS OF LEG 36, DEEP SEA DRILLING PROJECT The Shipboard Scientific Party1 Together with Wayne Harris, and William V. Sliter INTRODUCTION cores only and will be considered only briefly here. The four successful sites of the leg were drilled on the Leg 36 started in Ushuaia, Argentina, on 4 April Falkland (Malvinas) Plateau and in the Malvinas Outer 1974 and finished in Rio de Janeiro, Brazil, on 22 May Basin. The Falkland Plateau extends eastwards from 1974. It completed the second of three austral summer the continental shelf of the South American continent seasons of drilling planned for Antarctic waters during (Figure 1). The 500-fathom submarine contour lies east Phase III of the Deep Sea Drilling Project. In fact Leg of the Falkland Islands which consist of a meta- 36 brought the Antarctic drilling program of Phase III morphic complex overlain by Paleozoic-Triassic sedi- to an end, because the plan to drill south of Africa dur- mentary strata deformed in the early Mesozoic and cut ing the austral summer of 1974-75 had to be abandoned by mafic dykes (Greenway, 1972). The strata can be for want of a suitable escort vessel. correlated with rocks of comparable age in South The two main objectives of Leg 36 as originally con- America and southern Africa. There is therefore no ceived by the Antarctic Advisory Panel were to in- reason to doubt that the western portion of the plateau vestigate the geologic histories of the Scotia Arc and of at least is underlain by continental crust.
    [Show full text]
  • La Cartographie De La Terre Et Ses Océans
    la cartographie de la terre et ses océans Tectonics of the Antarctic Grikurov G.E. and Leitchenkov G.L. Introduction duced in the last decades of the past century mainly in Russia,USA and Australia,and various geological and struc- The Antarctic region extends from 60°S to the Sou- tural images of the Antarctic region also appeared in glo- th Pole and includes the Antarctic continent surrounded bal compilations made under CGMW auspices. In early by the southern parts of Atlantic, Indian and Pacific Oceans (Fig. 1). At 14 million km2, the continent is almost comple- tely (by 99%) covered with ice that averages 1.9 km in thickness. However, even rare rock outcrops visited by scientists at the early stage of Antarctic exploration pro- vided exiting basic information about geological struc- ture of Antarctica which appeared a missing link of Gond- wanaland that had utmost importance for reconstructing global tectonic history. As a consequence, after the entry in force in 1961 of the Antarctic Treaty, IUGS recommended that Antarctica should be taken into account by CGMW as one of the regions of the World, and respective action was taken at the CGMW meeting in December in 1962 by establishing Sub-commission for Antarctica. Since then CGMW consistently encouraged publi- cation of overview geoscience maps of the continent com- piled both under international projects and in individual counties. A few geological and tectonic maps of Antarctic Figure 1. Antarctic physiography and selected place names referred to in mainland at 1:5,000,000 and 1:10,000,000 scale were pro- the text.
    [Show full text]
  • A Palynological Analysis of Seymour Island and King George Island Off
    Louisiana State University LSU Digital Commons LSU Master's Theses Graduate School 2015 A Palynological Analysis of Seymour Island and King George Island off the Antarctic Peninsula: A Dating and Climatic Reconstruction Caven Madison Kymes Louisiana State University and Agricultural and Mechanical College, [email protected] Follow this and additional works at: https://digitalcommons.lsu.edu/gradschool_theses Part of the Earth Sciences Commons Recommended Citation Kymes, Caven Madison, "A Palynological Analysis of Seymour Island and King George Island off the Antarctic Peninsula: A Dating and Climatic Reconstruction" (2015). LSU Master's Theses. 392. https://digitalcommons.lsu.edu/gradschool_theses/392 This Thesis is brought to you for free and open access by the Graduate School at LSU Digital Commons. It has been accepted for inclusion in LSU Master's Theses by an authorized graduate school editor of LSU Digital Commons. For more information, please contact [email protected]. A PALYNOLOGICAL ANALYSIS OF SEYMOUR ISLAND AND KING GEORGE ISLAND OFF THE ANTARCTIC PENINSULA: A DATING AND CLIMATIC RECONSTRUCTION A Thesis Submitted to the Graduate Faculty of the Louisiana State University and Agricultural and Mechanical College in partial fulfillment of the requirements for the degree of Master of Science in The Department of Geology and Geophysics by Caven Madison Kymes B.S., Louisiana State University, 2013 December 2015 TABLE OF CONTENTS LIST OF TABLES……………………………………………………………………………. iii LIST OF FIGURES …………………………………………………………………………... iv ABSTRACT ..………………………………………………………………………………… v CHAPTER 1. INTRODUCTION TO ANTARCTIC EARTH SCIENCE ……………..…….. 1 1.1 Thesis style ………………………………………………………………………………... 1 1.2 Brief overview of projects and materials studied …………………………………………. 1 1.3 Antarctic Cenozoic history …...…………………………………………………………… 3 CHAPTER 2.
    [Show full text]
  • Download the Scanned
    362 NOTES AND NEV/S T.lsln 2. ANcrr Tl,alr ron Gevrussrru Monoclinic aibic:1.4878:l:1.M53 p :102"00+' Poqo:| :O.97 413:1. 4137:l p : 77"59tr', 7';p':l:O .70737 :0 .687 16:l fo' :0.99316, qo':1.M53 xo':0 '21725 Form 4 PQzPz:BCA c {001} 90"00' t2"00+' 77"59t', 90000' 0'00' 77"59+' D [010] 0 00 9000 000 9000 9000 a {100} 90 00 9000 000 9000 7759+ ooo m lrl0l 34 30 9000 000 3430 8314 5530 e [011] I 22i ss 36+ 77 s9+ 35 16+ s4 43+ 8406 s {101} -90 00 3801+ 12801+ 90 0o 5002 r28ot+ r llr2l -2r s0 37 50 10s53+ 55 12 43 28+ r02 59e Rnl.rnnxcns l. MuR-DocH, J., Nuevite, a new rare-earth mineral from California (Abstr): Geol. Soc- Am., Bull'. 57, lzl9 (1946). Purr.r.trs, W., Observations on the crystalline form, etc., of the ga1'lussite: Philosophieal Mogazine,l (N. S.), 263-266 (1827). Pnarr, J. H., On northupite; pirssonite, a new mineral; gaylussite and hanksite from Borax Lake, San Bernardino County, California: Aru, Jour. Sci., (4),2r 123-135 (1896)' ON THE MINERALOGY OF ANTARCTICA DuNc.qN SrnwAnt, Jr.., Corleton College,Northf'eld, Minnesota Since 1895ninety-six papers have been published relating to Antarctic mineralogy and petrography, Dr. Johannes Petersen (1895: 275-278) was the first to publish on Antarctic petrography. He described the basalt of Mount Christen Christensen(Christensen-Vulkan) of Robert' son Island, West Antarctica. The following is a list of the 167 mineral species'subspecies, and va- rieties, as well as those of questionable occurrence, that have been re- ported from Antarctica.
    [Show full text]
  • The Metamorphic Complexes of the Patagonian and Fuegian Andes Geologica Acta: an International Earth Science Journal, Vol
    Geologica Acta: an international earth science journal ISSN: 1695-6133 [email protected] Universitat de Barcelona España HERVÉ, F.; CALDERÓN, M.; FAÚNDEZ, V. The metamorphic complexes of the Patagonian and Fuegian Andes Geologica Acta: an international earth science journal, vol. 6, núm. 1, marzo, 2008, pp. 43-53 Universitat de Barcelona Barcelona, España Available in: http://www.redalyc.org/articulo.oa?id=50513100004 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 Geologica Acta, Vol.6, Nº 1, March 2008, 43-53 DOI: 10.1344/105.000000240 Available online at www.geologica-acta.com The metamorphic complexes of the Patagonian and Fuegian Andes F. HERVÉ* M. CALDERÓN and V. FAÚNDEZ Departamento de Geología, Universidad de Chile Plaza Ercilla 803, Casilla 13518, Correo 21, Santiago, Chile *Corresponding author E-mail: [email protected] ABSTRACT The Patagonian and Fuegian Andes are made up in part by late Paleozoic to Mesozoic metamorphic complexes. The mostly low grade late Paleozoic Eastern Andes Metamorphic Complex (EAMC) crops out to the East of the Meso-Cenozoic South Patagonian batholith (SPB), which intruded the metamorphic complexes. The protolith of the EAMC was likely deposited in a passive margin setting and at the Puerto Edén area underwent Late Jurassic sillimanite grade and migmatite local metamorphic conditions. It is suspected, but not proven, that the Cordillera Darwin Metamorphic Complex is a higher grade metamorphic equivalent of the EAMC.
    [Show full text]
  • Paleogene Corals from Seymour Island, Antarctic Peninsula
    PALEOGENE CORALS FROM SEYMOUR ISLAND, ANTARCTIC PENINSULA JAROSLAW STOLARSKI Stolarski, J. 1996. Paleogene corals from Sey mour Island , Antarctic Peninsula. In: A. Gaidzicki (ed.) Palaeontological Results of the Polish Antarctic Expeditions. Part 11. ­ Pala eontologia Polonica 55, 51- 63. From the Sobral Formation (Paleoce ne) of Seymour Island solitary coralla of ?Aulocyathus Marenzeller, 1904 (suborder Caryophylliina) and branch fragments of Madrepora sobral Filkorn, 1994 (suborder Faviina) are described. In the overlying strata of the La Meseta Formation (Eocene) sclerac tinian coral fauna comprises solitary Caryophylliina tCrispa­ totrochus antarcticus sp. n., Caryo phyllia sp., Flabellum sp.) and colonial Dendrophylliin a tTubastra ea sp.). Reported are also octocoral holdfa sts. The genera recorded from both formations are known also from modern seas. Crispatotrochus antarcticus sp. n. is the earliest representative of the genus. ?Aulocya thus and Tubastraea have no other fossil record. K e y wo r d s : ScIeractinia, Octocorallia, taxonomy, Sobral Formation, La Meseta For­ mation, Tertiary, Antarctica. Jar oslaw Stolarski.Tnstytut Paleobi ologii PAN, Aleja Zw irki i Wigury 93, 02- 089 Warszawa, Poland. Received 6 Nove mber 1995, accep ted 15 Decem ber 1995 52 JAROSlAW STOLARSKI CONTENTS Introduction 52 Acknowledgement s 52 Geologica l setting 53 Systematic part . 54 Order Scleractini a BOURNE. 1900 54 Suborder Faviina VAUG IIA N et WELLS, 1943 54 Family Oculinidae GRAY. 1847 .. 54 Genus Madrepora LINNAEUS. 1758 54 Suborder Caryophylliina VAUG IIA N et WELLS. 1943 54 Family Caryophylliidae DANA. 1846 .. 54 Genus Caryophyllia LAM ARCK. 1816 54 Genus Aulo cyathu s MAR ENZELLER. 1904 55 Genus Crispatotrochus TENI SON WOODS.
    [Show full text]