Guyot of Guyot Hall the Allegheny, the Appalachian, Adirondack, and Catskill Ranges
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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. -
Crater Ice Deposits Near the South Pole of Mars Owen William Westbrook
Crater Ice Deposits Near the South Pole of Mars by Owen William Westbrook Submitted to the Department of Earth, Atmospheric, and Planetary Sciences in partial fulfillment of the requirements for the degree of Master of Science in Earth and Planetary Sciences at the MASSACHUSETTS INSTITUTE OF TECHNOLOGY June 2009 © Massachusetts Institute of Technology 2009. All rights reserved. A uth or ........................................ Department of Earth, Atmospheric, and Planetary Sciences May 22, 2009 Certified by . Maria T. Zuber E. A. Griswold Professor of Geophysics Thesis Supervisor 6- Accepted by.... ...... ..... ........................................... Daniel Rothman Professor of Geophysics Department of Earth, Atmospheric and Planetary Sciences MASSACHUSETTS INSTWITE OF TECHNOLOGY JUL 2 0 2009 ARCHIES LIBRARIES Crater Ice Deposits Near the South Pole of Mars by Owen William Westbrook Submitted to the Department of Earth, Atmospheric, and Planetary Sciences on May 22, 2009, in partial fulfillment of the requirements for the degree of Master of Science in Earth and Planetary Sciences Abstract Layered deposits atop both Martian poles are thought to preserve a record of past climatic conditions in up to three km of water ice and dust. Just beyond the extent of these south polar layered deposits (SPLD), dozens of impact craters contain large mounds of fill material with distinct similarities to the main layered deposits. Previously identified as outliers of the main SPLD, these deposits could offer clues to the climatic history of the Martian south polar region. We extend previous studies of these features by cataloging all crater deposits found near the south pole and quantifying the physical parameters of both the deposits and their host craters. -
George P. Merrill Collection, Circa 1800-1930 and Undated
George P. Merrill Collection, circa 1800-1930 and undated Finding aid prepared by Smithsonian Institution Archives Smithsonian Institution Archives Washington, D.C. Contact us at [email protected] Table of Contents Collection Overview ........................................................................................................ 1 Administrative Information .............................................................................................. 1 Historical Note.................................................................................................................. 1 Descriptive Entry.............................................................................................................. 2 Names and Subjects ...................................................................................................... 3 Container Listing ............................................................................................................. 4 Series 1: PHOTOGRAPHS, CORRESPONDENCE AND RELATED MATERIAL CONCERNING INDIVIDUAL GEOLOGISTS AND SCIENTISTS, CIRCA 1800-1920................................................................................................................. 4 Series 2: PHOTOGRAPHS OF GROUPS OF GEOLOGISTS, SCIENTISTS AND SMITHSONIAN STAFF, CIRCA 1860-1930........................................................... 30 Series 3: PHOTOGRAPHS OF THE UNITED STATES GEOLOGICAL AND GEOGRAPHICAL SURVEY OF THE TERRITORIES (HAYDEN SURVEYS), CIRCA 1871-1877.............................................................................................................. -
Appendix I Lunar and Martian Nomenclature
APPENDIX I LUNAR AND MARTIAN NOMENCLATURE LUNAR AND MARTIAN NOMENCLATURE A large number of names of craters and other features on the Moon and Mars, were accepted by the IAU General Assemblies X (Moscow, 1958), XI (Berkeley, 1961), XII (Hamburg, 1964), XIV (Brighton, 1970), and XV (Sydney, 1973). The names were suggested by the appropriate IAU Commissions (16 and 17). In particular the Lunar names accepted at the XIVth and XVth General Assemblies were recommended by the 'Working Group on Lunar Nomenclature' under the Chairmanship of Dr D. H. Menzel. The Martian names were suggested by the 'Working Group on Martian Nomenclature' under the Chairmanship of Dr G. de Vaucouleurs. At the XVth General Assembly a new 'Working Group on Planetary System Nomenclature' was formed (Chairman: Dr P. M. Millman) comprising various Task Groups, one for each particular subject. For further references see: [AU Trans. X, 259-263, 1960; XIB, 236-238, 1962; Xlffi, 203-204, 1966; xnffi, 99-105, 1968; XIVB, 63, 129, 139, 1971; Space Sci. Rev. 12, 136-186, 1971. Because at the recent General Assemblies some small changes, or corrections, were made, the complete list of Lunar and Martian Topographic Features is published here. Table 1 Lunar Craters Abbe 58S,174E Balboa 19N,83W Abbot 6N,55E Baldet 54S, 151W Abel 34S,85E Balmer 20S,70E Abul Wafa 2N,ll7E Banachiewicz 5N,80E Adams 32S,69E Banting 26N,16E Aitken 17S,173E Barbier 248, 158E AI-Biruni 18N,93E Barnard 30S,86E Alden 24S, lllE Barringer 29S,151W Aldrin I.4N,22.1E Bartels 24N,90W Alekhin 68S,131W Becquerei -
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Arnold Guyot (1807-1884) and the Pestalozzian Approach to Geology Education
Arnold Guyot (1807-1884) and the Pestalozzian approach to geology education Autor(en): Wilson, Philip K. Objekttyp: Article Zeitschrift: Eclogae Geologicae Helvetiae Band (Jahr): 92 (1999) Heft 3 PDF erstellt am: 04.10.2021 Persistenter Link: http://doi.org/10.5169/seals-168674 Nutzungsbedingungen Die ETH-Bibliothek ist Anbieterin der digitalisierten Zeitschriften. Sie besitzt keine Urheberrechte an den Inhalten der Zeitschriften. Die Rechte liegen in der Regel bei den Herausgebern. Die auf der Plattform e-periodica veröffentlichten Dokumente stehen für nicht-kommerzielle Zwecke in Lehre und Forschung sowie für die private Nutzung frei zur Verfügung. Einzelne Dateien oder Ausdrucke aus diesem Angebot können zusammen mit diesen Nutzungsbedingungen und den korrekten Herkunftsbezeichnungen weitergegeben werden. Das Veröffentlichen von Bildern in Print- und Online-Publikationen ist nur mit vorheriger Genehmigung der Rechteinhaber erlaubt. Die systematische Speicherung von Teilen des elektronischen Angebots auf anderen Servern bedarf ebenfalls des schriftlichen Einverständnisses der Rechteinhaber. Haftungsausschluss Alle Angaben erfolgen ohne Gewähr für Vollständigkeit oder Richtigkeit. Es wird keine Haftung übernommen für Schäden durch die Verwendung von Informationen aus diesem Online-Angebot oder durch das Fehlen von Informationen. Dies gilt auch für Inhalte Dritter, die über dieses Angebot zugänglich sind. Ein Dienst der ETH-Bibliothek ETH Zürich, Rämistrasse 101, 8092 Zürich, Schweiz, www.library.ethz.ch http://www.e-periodica.ch 0012-9402/99/030321-5 $1.50 + 0.20/0 Eclogae geol. Helv. 92 (1999) 321-325 Birkhäuser Verlag. Basel. 1999 Arnold GUYOT (1807-1884) and the Pestalozzian approach to geology education Philip K.Wilson1 (Paper presented at the meeting of the International Commission on the History of the Geological Sciences (INHIGEO). -
Summary of Sexual Abuse Claims in Chapter 11 Cases of Boy Scouts of America
Summary of Sexual Abuse Claims in Chapter 11 Cases of Boy Scouts of America There are approximately 101,135sexual abuse claims filed. Of those claims, the Tort Claimants’ Committee estimates that there are approximately 83,807 unique claims if the amended and superseded and multiple claims filed on account of the same survivor are removed. The summary of sexual abuse claims below uses the set of 83,807 of claim for purposes of claims summary below.1 The Tort Claimants’ Committee has broken down the sexual abuse claims in various categories for the purpose of disclosing where and when the sexual abuse claims arose and the identity of certain of the parties that are implicated in the alleged sexual abuse. Attached hereto as Exhibit 1 is a chart that shows the sexual abuse claims broken down by the year in which they first arose. Please note that there approximately 10,500 claims did not provide a date for when the sexual abuse occurred. As a result, those claims have not been assigned a year in which the abuse first arose. Attached hereto as Exhibit 2 is a chart that shows the claims broken down by the state or jurisdiction in which they arose. Please note there are approximately 7,186 claims that did not provide a location of abuse. Those claims are reflected by YY or ZZ in the codes used to identify the applicable state or jurisdiction. Those claims have not been assigned a state or other jurisdiction. Attached hereto as Exhibit 3 is a chart that shows the claims broken down by the Local Council implicated in the sexual abuse. -
Masako Tabla RD
Andrea Wulf A Természet Feltalálója Alexander von Humboldt kalandos élete Jegyzetek Rövidítések Személyek és archívumok AH: Alexander von Humboldt BL: British Library, London Caroline Marsh Journal, NYPL: Crane családi iratok, Kéziratok és Ok- mányok Részleg, New York Public Library; Astor, Lenox és Tilden Alapítványok CH: Caroline von Humboldt CUL: Tudományos Kéziratok Gyûjteménye, Kéziratok és Egyetemi Ok- mányok Részleg, University Library, Cambridge DLC: Library of Congress, Washington DC JM online: a John Muir-iratok online gyûjteménye. Holt-Atherton Special Collections, University of the Pacific, Stockton, California, © 1984 Muir-Hanna Trust MHT: Holt-Atherton Special Collections, University of the Pacific, Stockton, California, © 1984 Muir-Hanna Trust NYPL: New York Public Library RS: Royal Society, London Stabi Berlin NL AH: Staatsbibliothek zu Berlin – Preußischer Kultur- besitz, Nachl. Alexander von Humboldt (Humboldt Kéziratgyûjtemény) 2 JEGYZETEK TJ: Thomas Jefferson UVM: George Perkins Marsh Collection, University of Vermont Library WH: Wilhelm von Humboldt Alexander von Humboldt mûvei AH Althaus Memoirs 1861: Briefwechsel und Gespräche Alexander von Hum- boldt’s mit einem junge Freunde, aus den Jahren 1848 bis 1856 AH Ansichten 1808: Ansichten der Natur mit wissenschaftlichen Erläuterungen AH Ansichten 1849: Ansichten der Natur mit wissenschaftlichen Erläuterun- gen, harmadik, bôvített kiadás AH Arago Letters 1907: Correspondance d’Alexandre de Humboldt avec Fran- çois Arago (1809–1853) AH Aspects 1849: Aspects of Nature, in Different Lands and Different Climates, with Scientific Elucidations AH Berghaus Letters 1863: Briefwechsel Alexander von Humboldt’s mit He inrich Berghaus aus den Jahren 1825 bis 1858 AH Bessel Letters 1994: Briefwechsel zwischen Alexander von Humboldt und Friedrich Wilhelm Bessel AH Böckh Letters 2011: Alexander von Humboldt und August Böckh. -
Geography and Vision
Geography and Vision Vision and visual imagery have always played a central role in geographical under- standing, and geographical description has traditionally sought to present its audience with rich and compelling visual images, be they the elaborate cosmo- graphic images of seventeenth century Europe or the computer and satellite imagery of modern geographical information science. Yet the significance of images goes well beyond the mere transcription of spatial and environmental facts and today there is a marked unease among some geographers about their discipline’s association with the pictorial. The expressive authority of visual images has been subverted, shifting attention from the integrity of the image itself towards the expression of truths that lie elsewhere than the surface. In Geography and Vision leading geographer Denis Cosgrove provides a series of personal reflections on the complex connections between seeing, imagining and representing the world geographically. In a series of eloquent and original essays he draws upon pictorial images – including maps, sketches, cartoons, paintings, and photographs – to explore and elaborate upon the many and varied ways in which the vast and varied earth, and at times the heavens beyond, have been both imagined and represented as a place of human habitation. Ranging historically from the sixteenth century to the present day, the essays include reflections upon geographical discovery and Renaissance landscape; urban cartography and utopian visions; ideas of landscape and the shaping of America; widerness and masculinity; conceptions of the Pacific; and the imaginative grip of the Equator. Extensively illustrated, this engaging work reveals the richness and complexity of the geographical imagination as expressed over the past five centuries. -
Global Catastrophes in Earth History
GLOBAL CATASTROPHES IN EARTH HISTORY An Interdisciplinary Conference on Impacts, Volcanism, and Mass Mortality Snowbird, Utah October 20-23, 1988 N89-2 12E7 --?HEW- Sponsored by The Lunar and Planetary Institute and The National Academy of Sciences Abstracts Presented to the Topical Conference Global Catastrophes in Earth History: An Interdisciplinary Conference on Impacts, Volcanism, and Mass Mortality Snowbird, Utah October 20 - 23,1988 Sponsored by Lunar and Planetary Institute and The National Academy of Sciences LPI Contribution No. 673 Compiled in 1988 Lunar and Planetary Institute Material in this volume may be copied without restraint for library, abstract service, educational, or personal research purposes; however, republication of any paper or portion thereof requires the written permission of the authors as well as appropriate acknowledgment of this publication. PREFACE This volume contains abstracts that have been accepted for presentation at the topical conference Global Catastrophes in Earth History: An Interdisciplinary Conference on Impacts, Volcanism and Mass Mortality. The Organizing Committee consisted of Robert Ginsburg, Chairman, University of Miami; Kevin Burke, Lunar and Planetary Institute; Lee M. Hunt, National Research Council; Digby McLaren, University of Ottawa; Thomas Simkin, National Museum of Natural History; Starley L. Thompson, National Center for Atmospheric Research; Karl K. Turekian, Yale University; George W. Wetherill, Carnegie Institution of Washington. Logistics and administrative support were provided by the Projects Ofice at the Lunar and Planetary Institute. This abstract volume was prepared by the Publications Office staff at the Lunar and Planetary Institute. The Lunar and Planetary Institute is operated by the Universities Space Research Association under contract No. NASW-4066 with the National Aeronautics and Space Administration. -
Mosasaurs from Germany – a Brief History of the First 100 Years of Research
Netherlands Journal of Geosciences —– Geologie en Mijnbouw | 94 – 1 | 5-18 | 2015 doi: 10.1017/njg.2014.16 Mosasaurs from Germany – a brief history of the first 100 years of research Sven Sachs1,*,JahnJ.Hornung2 &MikeReich2,3 1 Im Hof 9, 51766 Engelskirchen, Germany 2 Georg-August University Gottingen,¨ Geoscience Centre, Department of Geobiology, Gottingen,¨ Germany 3 Georg-August University Gottingen,¨ Geoscience Museum, Gottingen,¨ Germany * Corresponding author. Email: [email protected] Manuscript received: 30 December 2013, accepted: 26 May 2014 Abstract In Germany, mosasaur remains are very rare and only incompletely known. However, the earliest records date back to the 1830s, when tooth crowns werefoundinthechalkoftheIsleofRugen.¨ A number of prominent figures in German palaeontology and geosciences of the 19th and 20th centuries focused on these remains, including, among others, Friedrich von Hagenow, Hermann von Meyer, Andreas Wagner, Hanns Bruno Geinitz and Josef Pompeckj. Most of these works were only short notes, given the scant material. However, the discovery of fragmentary cranial remains in Westphalia in 1908 led to a more comprehensive discussion, which is also of historical importance, as it illustrates the discussions on the highly controversial and radical universal phylogenetic theory proposed by Gustav Steinmann in 1908. This theory saw the existence of continuous lines of descent, evolving in parallel, and did not regard higher taxonomic units as monophyletic groups but as intermediate paraphyletic stages of evolution. In this idea, nearly all fossil taxa form part of these lineages, which extend into the present time, and natural extinction occurs very rarely, if ever. In Steinmann’s concept, mosasaurs were not closely related to squamates but formed an intermediate member in a anagenetic chain from Triassic thalattosaurs to extant baleen whales. -
Sunset Crater Volcano, and Walnut Canyon
National Park Service Flagstaff Area National Monuments U.S. Department of the Interior Wupatki, Sunset Crater Volcano, and Walnut Canyon Ancient Times Park News 2007 - 2008 Park News 2004 Programs in Partnership The view is breathtaking from the Arizona Snowbowl, sured places. To the east, although not visible from here, are where the ski lift, operating in summer as the Skyride, the three Flagstaff Area National Monuments – Wupatki, transports visitors to an 11,500-foot-high-perch on Mount Sunset Crater Volcano, and Walnut Canyon. Agassiz. Here, on the state’s highest mountain, the air is thin, and plants like the San Francisco groundsel thrive in Flagstaff is the only American city with three national the alpine tundra, a leftover from the last ice age. Close by, monuments on its doorstep. At the same time, it is sur- centuries-old bristlecone pines stoop from decades of tor- rounded by the 1.8-million-acre Coconino National Forest. toise-like growth in the ice, wind, and snow. Human visi- Elevations range from 2,600’ in canyon bottoms to 12,633’ tors, dressed for the warmer temperatures below, shiver in at the top of the San Francisco Peaks. These federal lands their summer shorts and shirts. are managed by two different agencies, but they share many similarities. Forests, wildlife, archeological sites, and other The interpretive ranger posted on the mountain has plenty features stretch across this vast landscape, regardless of arti- top: NPS and USFS rangers and volunteers of material to work with – this is one of the few places on ficial boundaries.