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The Geology of the Enosburg Area, Vermont
THE GEOLOGY OF THE ENOSBURG AREA, VERMONT By JOlIN G. DENNIS VERMONT GEOLOGICAL SURVEY CHARLES G. DOLL, State Geologist Published by VERMONT DEVELOPMENT DEPARTMENT MONTPELIER, VERMONT BULLETIN No. 23 1964 TABLE OF CONTENTS PAGE ABSTRACT 7 INTRODUCTION ...................... 7 Location ........................ 7 Geologic Setting .................... 9 Previous Work ..................... 10 Method of Study .................... 10 Acknowledgments .................... 10 Physiography ...................... 11 STRATIGRAPHY ...................... 12 Introduction ...................... 12 Pinnacle Formation ................... 14 Name and Distribution ................ 14 Graywacke ...................... 14 Underhill Facics ................... 16 Tibbit Hill Volcanics ................. 16 Age......................... 19 Underhill Formation ................... 19 Name and Distribution ................ 19 Fairfield Pond Member ................ 20 White Brook Member ................. 21 West Sutton Slate ................... 22 Bonsecours Facies ................... 23 Greenstones ..................... 24 Stratigraphic Relations of the Greenstones ........ 25 Cheshire Formation ................... 26 Name and Distribution ................ 26 Lithology ...................... 26 Age......................... 27 Bridgeman Hill Formation ................ 28 Name and Distribution ................ 28 Dunham Dolomite .................. 28 Rice Hill Member ................... 29 Oak Hill Slate (Parker Slate) .............. 29 Rugg Brook Dolomite (Scottsmore -
Martian Crater Morphology
ANALYSIS OF THE DEPTH-DIAMETER RELATIONSHIP OF MARTIAN CRATERS A Capstone Experience Thesis Presented by Jared Howenstine Completion Date: May 2006 Approved By: Professor M. Darby Dyar, Astronomy Professor Christopher Condit, Geology Professor Judith Young, Astronomy Abstract Title: Analysis of the Depth-Diameter Relationship of Martian Craters Author: Jared Howenstine, Astronomy Approved By: Judith Young, Astronomy Approved By: M. Darby Dyar, Astronomy Approved By: Christopher Condit, Geology CE Type: Departmental Honors Project Using a gridded version of maritan topography with the computer program Gridview, this project studied the depth-diameter relationship of martian impact craters. The work encompasses 361 profiles of impacts with diameters larger than 15 kilometers and is a continuation of work that was started at the Lunar and Planetary Institute in Houston, Texas under the guidance of Dr. Walter S. Keifer. Using the most ‘pristine,’ or deepest craters in the data a depth-diameter relationship was determined: d = 0.610D 0.327 , where d is the depth of the crater and D is the diameter of the crater, both in kilometers. This relationship can then be used to estimate the theoretical depth of any impact radius, and therefore can be used to estimate the pristine shape of the crater. With a depth-diameter ratio for a particular crater, the measured depth can then be compared to this theoretical value and an estimate of the amount of material within the crater, or fill, can then be calculated. The data includes 140 named impact craters, 3 basins, and 218 other impacts. The named data encompasses all named impact structures of greater than 100 kilometers in diameter. -
Subsurface Geology of Cenozoic Deposits, Gulf Coastal Plain, South-Central United States
REGIONAL STRATIGRAPHY AND _^ SUBSURFACE GEOLOGY OF CENOZOIC DEPOSITS, GULF COASTAL PLAIN, SOUTH-CENTRAL UNITED STATES V U.S. GEOLOGICAL SURVEY PROFESSIONAL PAPER 1416-G AVAILABILITY OF BOOKS AND MAPS OF THE U.S. GEOLOGICAL SURVEY Instructions on ordering publications of the U.S. Geological Survey, along with prices of the last offerings, are given in the current-year issues of the monthly catalog "New Publications of the U.S. Geological Survey." Prices of available U.S. Geological Survey publications re leased prior to the current year are listed in the most recent annual "Price and Availability List." Publications that may be listed in various U.S. Geological Survey catalogs (see back inside cover) but not listed in the most recent annual "Price and Availability List" may no longer be available. Reports released through the NTIS may be obtained by writing to the National Technical Information Service, U.S. Department of Commerce, Springfield, VA 22161; please include NTIS report number with inquiry. Order U.S. Geological Survey publications by mail or over the counter from the offices listed below. BY MAIL OVER THE COUNTER Books Books and Maps Professional Papers, Bulletins, Water-Supply Papers, Tech Books and maps of the U.S. Geological Survey are available niques of Water-Resources Investigations, Circulars, publications over the counter at the following U.S. Geological Survey offices, all of general interest (such as leaflets, pamphlets, booklets), single of which are authorized agents of the Superintendent of Docu copies of Earthquakes & Volcanoes, Preliminary Determination of ments. Epicenters, and some miscellaneous reports, including some of the foregoing series that have gone out of print at the Superintendent of Documents, are obtainable by mail from ANCHORAGE, Alaska-Rm. -
Barite (Barium)
Barite (Barium) Chapter D of Critical Mineral Resources of the United States—Economic and Environmental Geology and Prospects for Future Supply Professional Paper 1802–D U.S. Department of the Interior U.S. Geological Survey Periodic Table of Elements 1A 8A 1 2 hydrogen helium 1.008 2A 3A 4A 5A 6A 7A 4.003 3 4 5 6 7 8 9 10 lithium beryllium boron carbon nitrogen oxygen fluorine neon 6.94 9.012 10.81 12.01 14.01 16.00 19.00 20.18 11 12 13 14 15 16 17 18 sodium magnesium aluminum silicon phosphorus sulfur chlorine argon 22.99 24.31 3B 4B 5B 6B 7B 8B 11B 12B 26.98 28.09 30.97 32.06 35.45 39.95 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 potassium calcium scandium titanium vanadium chromium manganese iron cobalt nickel copper zinc gallium germanium arsenic selenium bromine krypton 39.10 40.08 44.96 47.88 50.94 52.00 54.94 55.85 58.93 58.69 63.55 65.39 69.72 72.64 74.92 78.96 79.90 83.79 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 rubidium strontium yttrium zirconium niobium molybdenum technetium ruthenium rhodium palladium silver cadmium indium tin antimony tellurium iodine xenon 85.47 87.62 88.91 91.22 92.91 95.96 (98) 101.1 102.9 106.4 107.9 112.4 114.8 118.7 121.8 127.6 126.9 131.3 55 56 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 cesium barium hafnium tantalum tungsten rhenium osmium iridium platinum gold mercury thallium lead bismuth polonium astatine radon 132.9 137.3 178.5 180.9 183.9 186.2 190.2 192.2 195.1 197.0 200.5 204.4 207.2 209.0 (209) (210)(222) 87 88 104 105 106 107 108 109 110 111 112 113 114 115 116 -
March 21–25, 2016
FORTY-SEVENTH LUNAR AND PLANETARY SCIENCE CONFERENCE PROGRAM OF TECHNICAL SESSIONS MARCH 21–25, 2016 The Woodlands Waterway Marriott Hotel and Convention Center The Woodlands, Texas INSTITUTIONAL SUPPORT Universities Space Research Association Lunar and Planetary Institute National Aeronautics and Space Administration CONFERENCE CO-CHAIRS Stephen Mackwell, Lunar and Planetary Institute Eileen Stansbery, NASA Johnson Space Center PROGRAM COMMITTEE CHAIRS David Draper, NASA Johnson Space Center Walter Kiefer, Lunar and Planetary Institute PROGRAM COMMITTEE P. Doug Archer, NASA Johnson Space Center Nicolas LeCorvec, Lunar and Planetary Institute Katherine Bermingham, University of Maryland Yo Matsubara, Smithsonian Institute Janice Bishop, SETI and NASA Ames Research Center Francis McCubbin, NASA Johnson Space Center Jeremy Boyce, University of California, Los Angeles Andrew Needham, Carnegie Institution of Washington Lisa Danielson, NASA Johnson Space Center Lan-Anh Nguyen, NASA Johnson Space Center Deepak Dhingra, University of Idaho Paul Niles, NASA Johnson Space Center Stephen Elardo, Carnegie Institution of Washington Dorothy Oehler, NASA Johnson Space Center Marc Fries, NASA Johnson Space Center D. Alex Patthoff, Jet Propulsion Laboratory Cyrena Goodrich, Lunar and Planetary Institute Elizabeth Rampe, Aerodyne Industries, Jacobs JETS at John Gruener, NASA Johnson Space Center NASA Johnson Space Center Justin Hagerty, U.S. Geological Survey Carol Raymond, Jet Propulsion Laboratory Lindsay Hays, Jet Propulsion Laboratory Paul Schenk, -
Geodynamics If the Entire Solid Earth Is Viewed As a Single Dynamic
http://www.paper.edu.cn Geodynamic Processes and Our Living Environment YANG Wencai, P. Robinson, FU Rongshan and WANG Ying Geological Publishing House: 2001 Geophysical System Yang Wencai, Institute of Geology, CAGS, China Key words: Geophysics, geodynamics, kinetics of the Earth, tectonics, energies of the Earth, driving forces, applied geophysics, sustainable development. Contents: I. About geophysical system II. Kinetics of the Earth III. About plate tectonics and plume tectonics IV. The contents in the topic V. Energies for the dynamic Earth VI. Driving Forces of Plate Tectonics VII. Geophysics and sustainable development of the society I. About geophysical system Rapid advance of sciences during the second half of the twentieth century has enabled man to make a successful star in the exploration of planetary space. The deep interior of the Earth, however, remains as inaccessible as ever. This is the realm of solid-Earth geophysics, which still mainly depends on observations made at or near the Earth's surface. Despite this limitation, a major revolution in knowledge of the Earth's interior has taken place over the last forty years. This has led to a new understanding of the processes which occur within the Earth that produce surface conditions outstandingly different from those of the other inner planets and the moon. How has this come about? It is mainly the results of the introduction of new experimental and computational techniques into geophysics. Geophysics as a major branch of the geosciences has been discussed in Topic 6.16.1. Theoretically and traditionally the geophysical system correlates to physical system, but specified st study the solid Earth, containing sub-branches such as gravitation and Earth-motion correlated with 转载 1 中国科技论文在线 http://www.paper.edu.cn mechanics, geothermics correlated with heat and thermics, seismology with acoustics and wave theory, geoelectricity and geomagnetism. -
Session 151 2008 – 09
PROCEEDINGS OF THE GEOLOGICAL SOCIETY OF GLASGOW Session 151 2008 – 09 1 SESSION 151 (2008 – 2009) Members of Council 2 Reports President 3 Membership 4 Library 4 Scottish Journal of Geology 5 Website 6 Publications 7 Strathclyde RIGS Group 7 Proceedings 10 Treasurer 10 Meetings Secretary’s report 13 Lectures 14 Members’ Night 18 Excursions Secretaries’ Reports 19 Spireslack and Garpel Burn, 25 April 20 Rouken Glen, 7 May 23 Bathgate Hills, 16 May 24 Highland Border Slate Quarries, 6 June 26 Ballantrae – Metamorphics, 11 July 28 Isle of Bute, east coast, 15 Aug 32 Isle of Gigha, 18 – 21 Sept 34 General Information 40 Intimations 40 2 SESSION 151 (2008– 2009) Members of Council President Dr Alan W. Owen Vice Presidents Dr Chris J. Burton Mr Mervyn H. Aiken vacancy Honorary Secretary Dr Iain Allison Treasurer Mr Michael J. Pell Membership Secretary Dr Robin A. Painter Minutes Secretary Mrs Margaret L. Greene Meetings Secretary Dr Jim Morrison Publications Miss Muriel Alexander Librarian Dr Chris J. Burton Asst Librarian & Hon Archivist Mrs Seonaid Leishman Proceedings Editor Miss Margaret Donnelly Publicity Dr Neil D.L.Clark (web) Dr R. A. Painter (meetings etc) Excursion Secretaries Mr Jim Martin (Saturdays) Mr David McCulloch (Residential) Strathclyde RIGS Chairperson Mr Stuart Fairley Rockwatch Representative Ms Katerina Braun Junior Member Mr. Robert Jamieson Journal Editors Dr Colin J.R. Braithwaite Dr Brian Bell Ordinary Members Mrs Barbara Balfour Dr Simon Cuthbert Dr Tim Dempster Mr Charles M. Leslie Mr Robert McNicol Mrs Margaret Rollo Independent Examiner Mrs Beth Diamond 3 PRESIDENT Membership of the Society has shown an encouraging rise to 390, reversing the trend of recent years. -
GSA TODAY • Radon in Water, P
Vol. 8, No. 11 November 1998 INSIDE • Field Guide Editor, p. 5 GSA TODAY • Radon in Water, p. 10 • Women Geoscientists, p. 12 A Publication of the Geological Society of America • 1999 Annual Meeting, p. 31 Gas Hydrates: Greenhouse Nightmare? Energy Panacea or Pipe Dream? Bilal U. Haq, National Science Foundation, Division of Ocean Science, Arlington, VA 22230 ABSTRACT Recent interest in methane hydrates has resulted from the recognition that they may play important roles in the global carbon cycle and rapid climate change through emissions of methane from marine sediments and permafrost into the atmosphere, and in causing mass failure of sediments and structural changes on the continental slope. Their presumed large volumes are also consid- ered to be a potential source for future exploitation of methane as a resource. Natural gas hydrates occur widely on continental slope and rise, stabilized in place by high hydrostatic pressure and frigid bottom-temperature condi- tions. Change in these conditions, Figure 1. This seismic profile, over the landward side of Blake Ridge, crosses a salt diapir; the profile has either through lowering of sea level or been processed to show reflection strength. The prominent bottom simulating reflector (BSR) swings increase in bottom-water temperature, upward over the diapir because of the higher conductivity of the salt. Note the very strong reflections of may trigger the following sequence of gas accumulations below the gas-hydrate stability zone and the “blanking” of energy above it. Bright events: dissociation of the hydrate at its Spots along near-vertical faults above the diapir represent conduits for gas venting. -
A Fundamental Precambrian–Phanerozoic Shift in Earth's Glacial
Tectonophysics 375 (2003) 353–385 www.elsevier.com/locate/tecto A fundamental Precambrian–Phanerozoic shift in earth’s glacial style? D.A.D. Evans* Department of Geology and Geophysics, Yale University, P.O. Box 208109, 210 Whitney Avenue, New Haven, CT 06520-8109, USA Received 24 May 2002; received in revised form 25 March 2003; accepted 5 June 2003 Abstract It has recently been found that Neoproterozoic glaciogenic sediments were deposited mainly at low paleolatitudes, in marked qualitative contrast to their Pleistocene counterparts. Several competing models vie for explanation of this unusual paleoclimatic record, most notably the high-obliquity hypothesis and varying degrees of the snowball Earth scenario. The present study quantitatively compiles the global distributions of Miocene–Pleistocene glaciogenic deposits and paleomagnetically derived paleolatitudes for Late Devonian–Permian, Ordovician–Silurian, Neoproterozoic, and Paleoproterozoic glaciogenic rocks. Whereas high depositional latitudes dominate all Phanerozoic ice ages, exclusively low paleolatitudes characterize both of the major Precambrian glacial epochs. Transition between these modes occurred within a 100-My interval, precisely coeval with the Neoproterozoic–Cambrian ‘‘explosion’’ of metazoan diversity. Glaciation is much more common since 750 Ma than in the preceding sedimentary record, an observation that cannot be ascribed merely to preservation. These patterns suggest an overall cooling of Earth’s longterm climate, superimposed by developing regulatory feedbacks -
The Franklinian Geosyncline in the Canadian Arctic and Its Relationship to Svalbard
The Franklinian Geosyncline in the Canadian Arctic and its relationship to Svalbard By R. L. CHRISTIE1 Contents P age Abstract 263 lntroduction . 264 The Franklinian Geosyncline . 265 General tectonic pattern . 265 Stratigraphy . 267 Tectonic events .................. .............................. 274 a) Late Precambrian orogeny ... ........... .... ...... ........ 274 b) Middle Ordovician or earlier orogeny ...................... .. 274 c) Late Silurian to Early Devonian orogeny ....... ... .............. 274 d) Midd le Devonian?, Acadian orogeny . 275 e) Latest Devonian to Ear!y Mississippian orogeny ................ 276 Structural features of the Innuitian orogen .......................... 276 The principal structures : Acadian - Ellesmerian ... ................. 277 Older structural zones . 278 Y o unger structures . 279 A review of some tectonic features of the Innuitian region . 280 Tectonic development of Svalbard and the Innuitian region ............ 284 Tectonic models to account for the Arctic Ocean basins and the geology of Svalbard . 284 The geology of Svalbard and the lnnuitian region . 287 Pre-Carboniferous time . 287 Carboniferous and later time . 295 Tectonic connections between Svalbard and Innuitia ...... .......... 295 A tectonic model for Svalbard and Innuitia .................... .... 297 The de Geer Line and other lineaments. 300 The geosynclinal concept and the model for Svalbard-Innuitia ........ 304 Conclusions . 309 References . 309 Abstract Development of the Franklinian Geosyncline began, perhaps ear!ier, but -
The Dalradian Rocks of the North-East Grampian Highlands of Scotland
Revised Manuscript 8/7/12 Click here to view linked References 1 2 3 4 5 The Dalradian rocks of the north-east Grampian 6 7 Highlands of Scotland 8 9 D. Stephenson, J.R. Mendum, D.J. Fettes, C.G. Smith, D. Gould, 10 11 P.W.G. Tanner and R.A. Smith 12 13 * David Stephenson British Geological Survey, Murchison House, 14 West Mains Road, Edinburgh EH9 3LA. 15 [email protected] 16 0131 650 0323 17 John R. Mendum British Geological Survey, Murchison House, West 18 Mains Road, Edinburgh EH9 3LA. 19 Douglas J. Fettes British Geological Survey, Murchison House, West 20 Mains Road, Edinburgh EH9 3LA. 21 C. Graham Smith Border Geo-Science, 1 Caplaw Way, Penicuik, 22 Midlothian EH26 9JE; formerly British Geological Survey, Edinburgh. 23 David Gould formerly British Geological Survey, Edinburgh. 24 P.W. Geoff Tanner Department of Geographical and Earth Sciences, 25 University of Glasgow, Gregory Building, Lilybank Gardens, Glasgow 26 27 G12 8QQ. 28 Richard A. Smith formerly British Geological Survey, Edinburgh. 29 30 * Corresponding author 31 32 Keywords: 33 Geological Conservation Review 34 North-east Grampian Highlands 35 Dalradian Supergroup 36 Lithostratigraphy 37 Structural geology 38 Metamorphism 39 40 41 ABSTRACT 42 43 The North-east Grampian Highlands, as described here, are bounded 44 to the north-west by the Grampian Group outcrop of the Northern 45 Grampian Highlands and to the south by the Southern Highland Group 46 outcrop in the Highland Border region. The Dalradian succession 47 therefore encompasses the whole of the Appin and Argyll groups, but 48 also includes an extensive outlier of Southern Highland Group 49 strata in the north of the region. -
Petrography of Metalimestones and Metadolostones from the Dalradian of Northern Ireland Natural Environment Research Council
Petrography of metalimestones and metadolostones from the Dalradian of Northern Ireland Natural Environment Research Council British Geological Survey Onshore Geology Series TECHNICAL REPORT WA/00/72 Petrography of metalimestones and metadolostones from the Argyll and Southern Highland groups, Dalradian, Northern Ireland Christopher W Thomas December 2000 Contributors: M R Cooper and T P Johnston (Geological Survey of Northern Ireland) Geographical Index Northern Ireland Subject Index Petrography, Dalradian geology, metacarbonate rocks Bibliographic reference Thomas, C W. 2000 Petrography of metalimestones and metadolostones from the Argyll and Southern Highland groups, Dalradian, Northern Ireland. British Geological Survey Technical Report WA/00/72 © NERC copyright 2000 British Geological Survey, Edinburgh 2000 BGS Technical Report WA/00/72 Status: 16 January 2001 The full range of Survey publications is available Parent Body through the Sales Desks at Keyworth and at Natural Environment Research Council Murchison House, Edinburgh, and in the BGS London Polaris House, North Star Avenue, Information Office in the Natural History Museum Swindon, Wiltshire, SN2 I EU. Earth Galleries. The adjacent bookshop stocks the Telephone 01793 411500 more popular books for sale over the counter. Most Fax 01793 411501 BGS books and reports are listed in HMSO's Sectional List 45, and can be bought from HMSO and through HMSO agents and retailers. Maps are listed in the Kingsley Dunham Centre BGS Map Catalogue, and can be bought from Keyworth, Nottingham, NG 12 5GG. Ordnance Survey agents as well as from BGS. Telephone 0115 936 3100 Fax 0115 936 3200 The British Geological Survey carries out the geological survey of Great Britain and Northern Ireland (the latter as an agency service for the Murchison House, West Mains Road, government of Northern Ireland), and of the Edinburgh, EH9 3LA.