DOCSLIB.ORG

Gypsum Veins in the Triassic Moenkopi Formation

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Gypsum Veins in the Triassic Moenkopi Formation GYPSUM VEINS IN THE TRIASSIC MOENKOPI FORMATION, SOUTHERN UTAH: DIAGENETIC AND TECTONIC IMPLICATIONS AND ANALOG RELEVANCE TO MARS by Brennan William Young A thesis submitted to the faculty of The University of Utah in partial fulfillment of the requirements for the degree of Master of Science in Geology Department of Geology and Geophysics The University of Utah August 2016 Copyright © Brennan William Young 2016 All Rights Reserved The University of Utah Graduate School STATEMENT OF THESIS APPROVAL The thesis of _________________ Brennan William Young has been approved by the following supervisory committee members: Marjorie A. Chan_______________ , Chair 4/25/2016 Date Approved Brenda Bowen_________________ , Member 4/25/2016 Date Approved Thure E. Cerling_______________ , Member 4/25/2016 Date Approved and by ___________________ John M. Bartley___________________ , Chair/Dean of the Department/College/School o f ____________ Geology and Geophysics and by David B. Kieda, Dean of The Graduate School. ABSTRACT Gypsum vein geometry and chemistry are evaluated in the Triassic Moenkopi Formation in order to determine the source of mineral fill and conditions and timing of vein emplacement. Moenkopi veins are similar to veins at Endeavour and Gale craters on Mars. Mapping, geochemical, geometric, and basin analysis techniques are employed to better understand the Moenkopi vein network, assess them as an analog to Mars veins, and update a geologic map of the study area at the 1:24,000 scale. A three-part classification scheme organizes observations by vein geometry, vein distribution, and vein mineralogical characteristics to hypothesize vein network generation and evolution processes. The Moenkopi vein network is geometrically complex, stratigraphically distributed, and exhibits multiple varieties of gypsum. Moenkopi veins have similar Sr and S isotope ratios as primary Moenkopi gypsum beds and are interpreted to be sourced from with the unit. Moenkopi veins are dominantly horizontally oriented and cross-cut other diagenetic features and are interpreted to have been emplaced via hydraulic fracturing at <1 km depth during Colorado Plateau uplift <8 Ma. Mars veins share many geometric, textural, and mineralogical features with Moenkopi veins. Endeavour Crater veins appear to be lithologically distributed and are oriented to the crater rim and are interpreted to be sourced from early diagenetic sulfate and to have been emplaced during topographic collapse of the crater rim. Gale Crater veins appear to be stratigraphically distributed and to be subtly dominantly horizontally oriented and are interpreted to be sourced from an as-yet unobserved stratigraphic unit and to have been emplaced during exhumation. Mars and Moenkopi veins were emplaced via hydraulic fracturing at low confining pressures and low temperatures and have been minimally altered since emplacement. An updated map of the Torrey 7.5’ quadrangle, Wayne County, Utah includes mapping and descriptions of extensive Triassic through mid-Jurassic sedimentary, Noegene igneous, and covering Quaternary units. The Torrey map provides context for understanding Moenkopi veins and provides a more nuanced picture of geomorphic evolution in the Pleistocene, including alluvial surfaces that were were emplaced ~100- 550 ka and represent episodes of mass wasting and fluvial activity. iv CONTENTS ABSTRACT............................................................................................................................ iii LIST OF TABLES................................................................................................................ vii ACKNOWLEDGMENTS ..................................................................................................... ix TRIASSIC MOENKOPI FORMATION GYPSUM VEINS: DIAGENESIS AND STRUCTURE, SOUTHERN UTAH...................................................................................... 1 Abstract.........................................................................................................................1 Introduction...................................................................................................................2 Methods.......................................................................................................................10 Results.........................................................................................................................12 Discussion...................................................................................................................31 Conclusions.................................................................................................................44 Acknowledgments......................................................................................................45 References...................................................................................................................46 CALCIUM SULFATE VEINS IN TRIASSIC MOENKOPI MUDROCKS OF SOUTHERN UTAH: ANALOGS TO SULFATE VEINS ON MARS............................ 51 Abstract .......................................................................................................................51 Introduction .................................................................................................................52 Methods.......................................................................................................................61 Results.........................................................................................................................64 Discussion...................................................................................................................73 Conclusions.................................................................................................................85 Acknowledgments......................................................................................................86 References...................................................................................................................86 GEOLOGIC MAP OF THE TORREY 7.5’ QUADRANGLE, WAYNE COUNTY, UTAH......................................................................................................................................93 Abstract.......................................................................................................................93 Introduction .................................................................................................................93 Description of Map Units.......................................................................................... 98 Structure....................................................................................................................122 Diagenesis.................................................................................................................124 Geologic History......................................................................................................127 Hazards.....................................................................................................................131 Conclusions.............................................................................................................. 134 Acknowledgments....................................................................................................134 References .................................................................................................................134 Appendices A: KEY LOCALITIES........................................................................................... 139 B: GYPSUM TEXTURES...................................................................................... 146 C: FRACTURE TYPES.......................................................................................... 148 D: SAMPLES........................................................................................................... 150 E: 2D VEIN MEASUREMENTS...........................................................................154 F: GEOCHEMICAL DATA...................................................................................159 G: QEMSCAN RESULTS...................................................................................... 166 H: REDUCTION COLORATION OF THE MOENKOPI FORMATION........ 168 I: IGNEOUS DIKE AR-AR AGE DATA.............................................................171 vi LIST OF TABLES 1. Moenkopi lithofacies descriptions.................................................................................... 13 2. New vein class terminology, based on the presence of a plane of mineral fabric interruption (including clay and wall rock inclusions) that is parallel or sub-parallel to the vein wall, and by mineralogical changes along the length or width of the vein................18 3. Vein intersection classes....................................................................................................23 4. Vein network classification................................................................................................32 5. Moenkopi-Mars vein comparison..................................................................................... 84 6. Inverted topography age order for boulder terraces in the Torrey quadrangle........... 103 7. Details of key localities, with abbreviations, relevant figures, and directional view azimuth of figure images.....................................................................................................139
Load more

Recommended publications
  • Ron Blakey, Publications (Does Not Include Abstracts)
    Ron Blakey, Publications (does not include abstracts) The publications listed below were mainly produced during my tenure as a member of the Geology Department at Northern Arizona University. Those after 2009 represent ongoing research as Professor Emeritus. (PDF) – A PDF is available for this paper. Send me an email and I'll attach to return email Blakey, R.C., 1973, Stratigraphy and origin of the Moenkopi Formation of southeastern Utah: Mountain Geologist, vol. 10, no. 1, p. 1 17. Blakey, R.C., 1974, Stratigraphic and depositional analysis of the Moenkopi Formation, Southeastern Utah: Utah Geological Survey Bulletin 104, 81 p. Blakey, R.C., 1977, Petroliferous lithosomes in the Moenkopi Formation, Southern Utah: Utah Geology, vol. 4, no. 2, p. 67 84. Blakey, R.C., 1979, Oil impregnated carbonate rocks of the Timpoweap Member Moenkopi Formation, Hurricane Cliffs area, Utah and Arizona: Utah Geology, vol. 6, no. 1, p. 45 54. Blakey, R.C., 1979, Stratigraphy of the Supai Group (Pennsylvanian Permian), Mogollon Rim, Arizona: in Carboniferous Stratigraphy of the Grand Canyon Country, northern Arizona and southern Nevada, Field Trip No. 13, Ninth International Congress of Carboniferous Stratigraphy and Geology, p. 89 109. Blakey, R.C., 1979, Lower Permian stratigraphy of the southern Colorado Plateau: in Four Corners Geological Society, Guidebook to the Permian of the Colorado Plateau, p. 115 129. (PDF) Blakey, R.C., 1980, Pennsylvanian and Early Permian paleogeography, southern Colorado Plateau and vicinity: in Paleozoic Paleogeography of west central United States, Rocky Mountain Section, Society of Economic Paleontologists and Mineralogists, p. 239 258. Blakey, R.C., Peterson, F., Caputo, M.V., Geesaman, R., and Voorhees, B., 1983, Paleogeography of Middle Jurassic continental, shoreline, and shallow marine sedimentation, southern Utah: Mesozoic PaleogeogÂraphy of west central United States, Rocky Mountain Section of Society of Economic Paleontologists and Mineralogists (Symposium), p.
    [Show full text]
  • Biochronology of the Triassic Tetrapod Footprints
    Geological Society, London, Special Publications Tetrapod footprints - their use in biostratigraphy and biochronology of the Triassic Hendrik Klein and Spencer G. Lucas Geological Society, London, Special Publications 2010; v. 334; p. 419-446 doi:10.1144/SP334.14 Email alerting click here to receive free email alerts when new articles cite this service article Permission click here to seek permission to re-use all or part of this article request Subscribe click here to subscribe to Geological Society, London, Special Publications or the Lyell Collection Notes Downloaded by on 15 June 2010 © 2010 Geological Society of London Tetrapod footprints – their use in biostratigraphy and biochronology of the Triassic HENDRIK KLEIN1,* & SPENCER G. LUCAS2 1Ru¨bezahlstraße 1, D-92318 Neumarkt, Germany 2New Mexico Museum of Natural History, 1801 Mountain Road NW, Albuquerque, NM 87104-1375 USA *Corresponding author (e-mail: [email protected]) Abstract: Triassic tetrapod footprints have a Pangaea-wide distribution; they are known from North America, South America, Europe, North Africa, China, Australia, Antarctica and South Africa. They often occur in sequences that lack well-preserved body fossils. Therefore, the question arises, how well can tetrapod footprints be used in age determination and correlation of stratigraphic units? The single largest problem with Triassic footprint biostratigraphy and biochronology is the non- uniform ichnotaxonomy and evaluation of footprints that show extreme variation in shape due to extramorphological (substrate-related) phenomena. Here, we exclude most of the countless ichnos- pecies of Triassic footprints, and instead we consider ichnogenera and form groups that show distinctive, anatomically-controlled features. Several characteristic footprint assemblages and ichnotaxa have a restricted stratigraphic range and obviously occur in distinct time intervals.
    [Show full text]
  • Placing World War I in the History of Mathematics David Aubin, Catherine Goldstein
    Placing World War I in the History of Mathematics David Aubin, Catherine Goldstein To cite this version: David Aubin, Catherine Goldstein. Placing World War I in the History of Mathematics. 2013. hal- 00830121v1 HAL Id: hal-00830121 https://hal.sorbonne-universite.fr/hal-00830121v1 Preprint submitted on 4 Jun 2013 (v1), last revised 8 Jul 2014 (v2) HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. Placing World War I in the History of Mathematics David Aubin and Catherine Goldstein Abstract. In the historical literature, opposite conclusions were drawn about the impact of the First World War on mathematics. In this chapter, the case is made that the war was an important event for the history of mathematics. We show that although mathematicians' experience of the war was extremely varied, its impact was decisive on the life of a great number of them. We present an overview of some uses of mathematics in war and of the development of mathematics during the war. We conclude by arguing that the war also was a crucial factor in the institutional modernization of mathematics. Les vrais adversaires, dans la guerre d'aujourd'hui, ce sont les professeurs de math´ematiques`aleur table, les physiciens et les chimistes dans leur laboratoire.
    [Show full text]
  • No. 40. the System of Lunar Craters, Quadrant Ii Alice P
    NO. 40. THE SYSTEM OF LUNAR CRATERS, QUADRANT II by D. W. G. ARTHUR, ALICE P. AGNIERAY, RUTH A. HORVATH ,tl l C.A. WOOD AND C. R. CHAPMAN \_9 (_ /_) March 14, 1964 ABSTRACT The designation, diameter, position, central-peak information, and state of completeness arc listed for each discernible crater in the second lunar quadrant with a diameter exceeding 3.5 km. The catalog contains more than 2,000 items and is illustrated by a map in 11 sections. his Communication is the second part of The However, since we also have suppressed many Greek System of Lunar Craters, which is a catalog in letters used by these authorities, there was need for four parts of all craters recognizable with reasonable some care in the incorporation of new letters to certainty on photographs and having diameters avoid confusion. Accordingly, the Greek letters greater than 3.5 kilometers. Thus it is a continua- added by us are always different from those that tion of Comm. LPL No. 30 of September 1963. The have been suppressed. Observers who wish may use format is the same except for some minor changes the omitted symbols of Blagg and Miiller without to improve clarity and legibility. The information in fear of ambiguity. the text of Comm. LPL No. 30 therefore applies to The photographic coverage of the second quad- this Communication also. rant is by no means uniform in quality, and certain Some of the minor changes mentioned above phases are not well represented. Thus for small cra- have been introduced because of the particular ters in certain longitudes there are no good determi- nature of the second lunar quadrant, most of which nations of the diameters, and our values are little is covered by the dark areas Mare Imbrium and better than rough estimates.
    [Show full text]
  • Rock Layers of the Monument
    ROCK LAYERS OF THE MONUMENT The rocks of Colorado National Monument record a fascinating story of mountain building, enormous amounts of erosion, and changing climates, as the continent of North America gradually moved northward toward its present position. PRECAMBRIAN The dark-colored rock at the bottom of the with the overlying red sedimentary rocks. canyons is Precambrian in age, dated at The record of about 1.5 billion years of 1. 7 billion years old. These rocks were earth's history is missing! We know from originally sedimentary rocks, but were surrounding areas that this region was changed into metamorphic rocks and partly uplifted into a major mountain range which, melted into igneous rocks when the area that after hundreds of millions of years, was is now Colorado collided with ancient finally eroded low enough that sediments North America and became part of the could be deposited where the mountains continent. There is a huge gap in the once stood. geologic record at the contact of these rocks The lowest and oldest layer of sedimentary deposits, the Chinle Formation records a TRIASSIC rock is the Chinle Formation. Comprised time when this area was close to the equator. chiefly of red stream and floodplain JURASSIC As the continent slowly drifted northward, After Entrada time, a succession of lake and the climate changed and desert conditions stream deposits formed, beginning with the prevailed. The towering cliffs of the wind­ Wanakah Formation and followed by the deposited (eolian) Wingate Sandstone Morrison Formation. preserve the remnants of sand dunes Here at Colorado National Monument, the formed in that desert.
    [Show full text]
  • Discovery of Silica-Rich Deposits on Mars by the Spirit Rover
    Ancient Aqueous Environments at Endeavour Crater, Mars Authors: R.E. Arvidson1, S.W. Squyres2, J.F. Bell III3, J. G. Catalano1, B.C. Clark4, L.S. Crumpler5, P.A. de Souza Jr.6, A.G. Fairén2, W.H. Farrand4, V.K. Fox1, R. Gellert7, A. Ghosh8, M.P. Golombek9, J.P. Grotzinger10, E. A. Guinness1, K. E. Herkenhoff11, B. L. Jolliff1, A. H. Knoll12, R. Li13, S.M. McLennan14,D. W. Ming15, D.W. Mittlefehldt15, J.M. Moore16, R. V. Morris15, S. L. Murchie17, T.J. Parker9, G. Paulsen18, J.W. Rice19, S.W. Ruff3, M. D. Smith20, M. J. Wolff4 Affiliations: 1 Dept. Earth and Planetary Sci., Washington University in Saint Louis, St. Louis, MO, 63130, USA. 2 Dept. Astronomy, Cornell University, Ithaca, NY, 14853, USA. 3 School of Earth and Space Exploration, Arizona State University, Tempe, AZ 85287, USA. 4Space Science Institute, Boulder, CO 80301, USA. 5 New Mexico Museum of Natural History & Science, Albuquerque, NM 87104, USA. 6 CSIRO Computational Informatics, Hobart 7001 TAS, Australia. 7 Department of Physics, University of Guelph, Guelph, ON, N1G 2W1, Canada. 8 Tharsis Inc., Gaithersburg MD 20877, USA. 9 Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA. 10 Division of Geological and Planetary Sciences, Caltech, Pasadena, CA 91125, USA. 11 U.S. Geological Survey, Astrogeology Science Center, Flagstaff, AZ 86001, USA. 12 Botanical Museum, Harvard University, Cambridge MA 02138, USA. 13 Dept. of Civil & Env. Eng. & Geodetic Science, Ohio State University, Columbus, OH 43210, USA. 14 Dept. of Geosciences, State University of New York, Stony Brook, NY 11794, USA.
    [Show full text]
  • GEOLOGY and GROUND-WATER SUPPLIES of the FORT WINGATE INDIAN SCHOOL AREA, Mckinley COUNTY, NEW MEXICO
    GEOLOGICAL SURVEY CIRCULAR 360 GEOLOGY AND GROUND-WATER SUPPLIES OF THE FORT WINGATE INDIAN SCHOOL AREA, McKINLEY COUNTY, NEW MEXICO PROPERTY OT§ tJ. B. EED! DGJCAL' SURVEY PUBLIC INQUIRIES OFFICE BAN FRANC1ECQ. CALIFORNIA Prepared in cooperation with the Bureau of Indian Affairs UNITED STATES DEPARTMENT OF THE INTERIOR Douglas McKay, Secretary GEOLOGICAL SURVEY W. E. Wrather, Director GEOLOGICAL SURVEY CIRCULAR 360 GEOLOGY AND GROUND-WATER SUPPLIES OF THE FORT WINGATE INDIAN SCHOOL AREA, McKINLEY COUNTY, NEW MEXICO By J. T. Callahan and R. L. Cushman Prepared in cooperation with the Bureau of Indian Affairs Washington, D. C-, 1905 Free on application to the Geological Survey, Washington 25, D. C. GEOLOGY AND GROUND-WATER SUPPLIES OF THE FORT WINGATE INDIAN SCHOOL AREA, McKINLEY COUNTY, NEW MEXICO By J. T. Callahan and R. L. Cushman CONTENTS Page Page Abstract.................................................... 1 Geology and ground-water resources--Continued Introduction............................................... 2 Geologic structures--Continued Location, topography, and drainage............... 2 Faults..,................................................. 5 Geology and ground-water resources.............. 2 Ground water................................................ 5 Geologic formations and their water-bearing San Andres formation.................................. 5 properties........................................ 2 Recharge conditions................................. 5 Permian system................................... 4 Discharge
    [Show full text]
  • The Pancam Instrument for the Exomars Rover
    ASTROBIOLOGY ExoMars Rover Mission Volume 17, Numbers 6 and 7, 2017 Mary Ann Liebert, Inc. DOI: 10.1089/ast.2016.1548 The PanCam Instrument for the ExoMars Rover A.J. Coates,1,2 R. Jaumann,3 A.D. Griffiths,1,2 C.E. Leff,1,2 N. Schmitz,3 J.-L. Josset,4 G. Paar,5 M. Gunn,6 E. Hauber,3 C.R. Cousins,7 R.E. Cross,6 P. Grindrod,2,8 J.C. Bridges,9 M. Balme,10 S. Gupta,11 I.A. Crawford,2,8 P. Irwin,12 R. Stabbins,1,2 D. Tirsch,3 J.L. Vago,13 T. Theodorou,1,2 M. Caballo-Perucha,5 G.R. Osinski,14 and the PanCam Team Abstract The scientific objectives of the ExoMars rover are designed to answer several key questions in the search for life on Mars. In particular, the unique subsurface drill will address some of these, such as the possible existence and stability of subsurface organics. PanCam will establish the surface geological and morphological context for the mission, working in collaboration with other context instruments. Here, we describe the PanCam scientific objectives in geology, atmospheric science, and 3-D vision. We discuss the design of PanCam, which includes a stereo pair of Wide Angle Cameras (WACs), each of which has an 11-position filter wheel and a High Resolution Camera (HRC) for high-resolution investigations of rock texture at a distance. The cameras and electronics are housed in an optical bench that provides the mechanical interface to the rover mast and a planetary protection barrier.
    [Show full text]
  • Scientific Thought As a Planetary Phenomenon
    21st CENTURY SCIENCE & TECHNOLOGY SPRING-SUMMER 2012 www.21stcenturysciencetech.com $10.00 Scientific Thought as A Planetary Phenomenon Vernadsky ‘The Transition from the Biosphere to the Noösphere’ ‘The Evolution of Species and Living Matter’ 21st CENTURY SCIENCE & TECHNOLOGY Vol. 25, Nos. 1, 2 Spring-Summer 2012 Features News GREAT PROJECTS 76 NAWAPA XXI Update INTERVIEW: BRYAN KARNEY 10 The Transition From the Biosphere to the Noösphere 77 NAWAPA: A Bold, Fascinating Vladimir I. Vernadsky Program that Deserves With introduction by translator Bill Jones Consideration! 32 Evolution of Species and Living Matter 82 Three Gorges Dam Proves Its Worth Vladimir I. Vernadsky Translated by Meghan Rouillard SPACE IN MEMORIAM 45 Are Nuclear Processes in Biology Unique? 87 Neil Armstrong: 1930-2012 Ernest Schapiro, MD The Mission and the Man 88 Curiosity Will Open a New 56 ON MIND Chapter in Understanding Mars Shawna Halevy Marsha Freeman 92 Shuttle Opened the Next Space 56 Thinking Without Words Frontier 60 Thinking the Unseen Marsha Freeman BIOLOGY SATIRE 98 The God Particle Cambrian Cannibals 67 (The Secret in the Rabbit Hole) Agnostid Trilobites and the Earliest Known Case of Frederick Harris Arthropod Cannibalism Mark McMenamin, Ph.D. Departments 72 Evolution and Organismic Communication EDITORIAL Jason Ross 2 Scales of Space and Time Jason Ross 5 NEWS BRIEFS VIEWPOINT 7 On Wonder Shawna Halevy BOOKS 94 War Against the Weak, America’s Campaign To Create A Master Race by Edwin Black 97 The Mighty Mars Rovers: The Incredible Adventures of Spirit And Opportunity by Elizabeth Rusch On the Cover: Curiosity studying the Martian regolith. Image: NASA.
    [Show full text]
  • Geology and Stratigraphy Column
    Capitol Reef National Park National Park Service U.S. Department of the Interior Geology “Geology knows no such word as forever.” —Wallace Stegner Capitol Reef National Park’s geologic story reveals a nearly complete set of Mesozoic-era sedimentary layers. For 200 million years, rock layers formed at or near sea level. About 75-35 million years ago tectonic forces uplifted them, forming the Waterpocket Fold. Forces of erosion have been sculpting this spectacular landscape ever since. Deposition If you could travel in time and visit Capitol Visiting Capitol Reef 180 million years ago, Reef 245 million years ago, you would not when the Navajo Sandstone was deposited, recognize the landscape. Imagine a coastal you would have been surrounded by a giant park, with beaches and tidal flats; the water sand sea, the largest in Earth’s history. In this moves in and out gently, shaping ripple marks hot, dry climate, wind blew over sand dunes, in the wet sand. This is the environment creating large, sweeping crossbeds now in which the sediments of the Moenkopi preserved in the sandstone of Capitol Dome Formation were deposited. and Fern’s Nipple. Now jump ahead 20 million years, to 225 All the sedimentary rock layers were laid million years ago. The tidal flats are gone and down at or near sea level. Younger layers were the climate supports a tropical jungle, filled deposited on top of older layers. The Moenkopi with swamps, primitive trees, and giant ferns. is the oldest layer visible from the visitor center, The water is stagnant and a humid breeze with the younger Chinle Formation above it.
    [Show full text]
  • Schmitz, M. D. 2000. Appendix 2: Radioisotopic Ages Used In
    Appendix 2 Radioisotopic ages used in GTS2020 M.D. SCHMITZ 1285 1286 Appendix 2 GTS GTS Sample Locality Lat-Long Lithostratigraphy Age 6 2s 6 2s Age Type 2020 2012 (Ma) analytical total ID ID Period Epoch Age Quaternary À not compiled Neogene À not compiled Pliocene Miocene Paleogene Oligocene Chattian Pg36 biotite-rich layer; PAC- Pieve d’Accinelli section, 43 35040.41vN, Scaglia Cinerea Fm, 42.3 m above base of 26.57 0.02 0.04 206Pb/238U B2 northeastern Apennines, Italy 12 29034.16vE section Rupelian Pg35 Pg20 biotite-rich layer; MCA- Monte Cagnero section (Chattian 43 38047.81vN, Scaglia Cinerea Fm, 145.8 m above base 31.41 0.03 0.04 206Pb/238U 145.8, equivalent to GSSP), northeastern Apennines, Italy 12 28003.83vE of section MCA/84-3 Pg34 biotite-rich layer; MCA- Monte Cagnero section (Chattian 43 38047.81vN, Scaglia Cinerea Fm, 142.8 m above base 31.72 0.02 0.04 206Pb/238U 142.8 GSSP), northeastern Apennines, Italy 12 28003.83vE of section Eocene Priabonian Pg33 Pg19 biotite-rich layer; MASS- Massignano (Oligocene GSSP), near 43.5328 N, Scaglia Cinerea Fm, 14.7 m above base of 34.50 0.04 0.05 206Pb/238U 14.7, equivalent to Ancona, northeastern Apennines, 13.6011 E section MAS/86-14.7 Italy Pg32 biotite-rich layer; MASS- Massignano (Oligocene GSSP), near 43.5328 N, Scaglia Cinerea Fm, 12.9 m above base of 34.68 0.04 0.06 206Pb/238U 12.9 Ancona, northeastern Apennines, 13.6011 E section Italy Pg31 Pg18 biotite-rich layer; MASS- Massignano (Oligocene GSSP), near 43.5328 N, Scaglia Cinerea Fm, 12.7 m above base of 34.72 0.02 0.04 206Pb/238U
    [Show full text]
  • Lexique Stratigraphique Canadien - Volume V-B - Region Des Appalaches, Des Basses-Terres Du Saint-Laurent Et Des Iles De La Madeleine Lexique Stratigraphique
    DV 91-23 LEXIQUE STRATIGRAPHIQUE CANADIEN - VOLUME V-B - REGION DES APPALACHES, DES BASSES-TERRES DU SAINT-LAURENT ET DES ILES DE LA MADELEINE LEXIQUE STRATIGRAPHIQUE CANADIEN Volume Fa Région des Appalaches, des Basses-Terres du Saint-Laurent et des îles de la Madeleine par Yvon Globensky et collaborateurs 1993 Québec ©© LEXIQUE STRATIGRAPHIQUE CANADIEN Volume r-8 Région des Appalaches, des Basses-Terres du Saint-Laurent et des Îles de la Madeleine par Yvon Globensky et collaborateurs DV 91-23 1993 Quebec ®® DIRECTION GÉNÉRALE DE L'EXPLORATION GÉOLOGIQUE ET MINÉRALE Sous-ministre adjoint: R.Y. Lamarche DIRECTION DE LA RECHERCHE GÉOLOGIQUE Directeur: A. Simard, par intérim SERVICE GÉOLOGIQUE DE QUÉBEC Chef: J.-M. Charbonneau Manuscrit soumis le: 30-01-91 Accepté pour publication le: 14-06-91 Lecteur critique J. Béland Édition Géomines / F. Dompierre Préparé par la Division de l'édition (Service de la géoinformation, DGEGM) Couvert 1: 1) Paucicrura rogata et Platystrophia amoena. Membre de Rosemont. Au SW de Saint-Jean-sur-Richelieu. Photo: tirée de Globensky, 1981b, page 39 2) Formation de Solomon's Corner. Saint-Armand-Station. Photo: tirée de Globensky, 1981b, page 126 3) Faciès de Terrebonne, formation de Tétreauville. Rivière L'Assomption. Photo: Y. Globensky 4) Formation de Covey Hill. Coupe à l'extrémité NW du lac Gulf, à l'ouest de Covey Hill. Photo: tirée de Globensky, 1986, page 9 Couvert 4: 1) Formation d'Indian Point. Péninsule de Forillon. Photo: D. Brisebois 2) Coupe type de la Formation de Wallace Creek. Étang Streit, près de Philipsburg. Photo: tirée de Globensky, 1981b, page 101 3) Euomphalopsis sp.
    [Show full text]