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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. -
GSA ROCKY MOUNTAIN/CORDILLERAN JOINT SECTION MEETING 15–17 May Double Tree by Hilton Hotel and Conference Center, Flagstaff, Arizona, USA
Volume 50, Number 5 GSA ROCKY MOUNTAIN/CORDILLERAN JOINT SECTION MEETING 15–17 May Double Tree by Hilton Hotel and Conference Center, Flagstaff, Arizona, USA www.geosociety.org/rm-mtg Sunset Crater is a cinder cone located north of Flagstaff, Arizona, USA. Program 05-RM-cvr.indd 1 2/27/2018 4:17:06 PM Program Joint Meeting Rocky Mountain Section, 70th Meeting Cordilleran Section, 114th Meeting Flagstaff, Arizona, USA 15–17 May 2018 2018 Meeting Committee General Chair . Paul Umhoefer Rocky Mountain Co-Chair . Dennis Newell Technical Program Co-Chairs . Nancy Riggs, Ryan Crow, David Elliott Field Trip Co-Chairs . Mike Smith, Steven Semken Short Courses, Student Volunteer . Lisa Skinner Exhibits, Sponsorship . Stephen Reynolds GSA Rocky Mountain Section Officers for 2018–2019 Chair . Janet Dewey Vice Chair . Kevin Mahan Past Chair . Amy Ellwein Secretary/Treasurer . Shannon Mahan GSA Cordilleran Section Officers for 2018–2019 Chair . Susan Cashman Vice Chair . Michael Wells Past Chair . Kathleen Surpless Secretary/Treasurer . Calvin Barnes Sponors We thank our sponsors below for their generous support. School of Earth and Space Exploration - Arizona State University College of Engineering, Forestry, and Natural Sciences University of Arizona Geosciences (Arizona LaserChron Laboratory - ALC, Arizona Radiogenic Helium Dating Lab - ARHDL) School of Earth Sciences & Environmental Sustainability - Northern Arizona University Arizona Geological Survey - sponsorship of the banquet Prof . Stephen J Reynolds, author of Exploring Geology, Exploring Earth Science, and Exploring Physical Geography - sponsorship of the banquet NOTICE By registering for this meeting, you have acknowledged that you have read and will comply with the GSA Code of Conduct for Events (full code of conduct listed on page 31) . -
EROSION and BASIN MODIFICATION of SMALLER COMPLEX CRATERS in the ISIDIS REGION, MARS. J.A. Mclaughlin1 and A.K. Davatzes2, 1Temp
Lunar and Planetary Science XLVIII (2017) 1190.pdf EROSION AND BASIN MODIFICATION OF SMALLER COMPLEX CRATERS IN THE ISIDIS REGION, MARS. J.A. McLaughlin1 and A.K. Davatzes2, 1Temple University, [email protected], 2Temple University, [email protected]. Introduction: Crater erosion and morphology are Level of Degradation (LOD) was defined for each indicators of the climatic and erosional history of the crater using depth to diameter ratios (d/D) and percent- area in which the crater is found [1][2]. Here we pre- age of crater rim remaining. This categorizes craters sent a detailed analysis of crater erosion and morphol- into four types; 1 is the least degraded and 4 is the ogy in the Isidis Planitia Basin region. The goal of this most degraded. Criteria are based on the following: work is to produce a thorough database of crater prop- erties and document the modification processes that dominate locally and regionally. Crater degradation, age, and geomorphology are all considered and cross- correlated to narrow down the timing and dominance of persistent fluvial, lacustrine, and volcanic processes Floor features are complex and variable, but struc- on Mars. These geologic processes modify the crater tures indicative of the following processes were identi- rims and floor, often in distinguishable ways that pro- fied: Volcanic, Aeolian, Impact, Glacial, Mass Wast- vide insight into past environmental conditions. These ing, and Water Interaction. When possible, percent environments may hold clues to past habitable envi- floor cover of features such as lava flows, mass wast- ronments that are of particular interest for future mis- ing, dune and dust coverage were documented. -
The Implications of Lake History for Conservation Biology
THE IMPLICATIONS OF LAKE HISTORY FOR CONSERVATION BIOLOGY Kristine Alexia Ciruna A thesis submitted in conformity with the requirements for the degree of Doctor of Philosophy Graduate Department of Zoology, University of Toronto O Copyright by Kristine Alexia Cinina 1999 National Libraiy Biiiotheque nationale du Canada Acquisitions and Acquisitions et Bibliographie Services sewices bibliographiques 395 Wellmgtori Street 395, nie WeJMngton OüawaON K1A ON4 OitawaON K1AW Canada CaMda The author has gmnted a non- L'auteur a accordé une licence non exclusive licence allowing the exclusive permettant à la National Library of Canada to Bibliothèque nationale du Canada de reproduce, loan, distribute or selî reproduire, prêter, distribuer ou copies of this thesis in microform, vendre des copies de cette thèse sous paper or electronic formats. la forme de microfiche/nlm, de reproduction sur papier ou sur fomiat électronique. The author retains ownershp of the L'auteur consme la propriété du copyright in this thesis. Neither the &oit d'auteur qui protège cette thèse. thesis nor substantial extracts fkom it Ni la thèse ni des extraits substantiels may be printed or otherwise de celle-ci ne doivent être imprimés reproduced without the author's ou autrement reproduits sans son permission. autorisation. Abstract ABSTRACT Ciruna, Kristine Alexia. 1999. The implications of lake history for conservation biology. Ph.D. dissertation. Department of Zoology, University of Toronto, Toronto, Ontario. The historical formation of aquatic ecosystems and the regional environmental processes acting at the watershed level are important components in the conservation of aquatic ecosystems which are often'neglected. This thesis integrates the fields of cornmunity and landscape ecology. -
A Unified Plane Coordinate Reference System
This dissertation has been microfilmed exactly as received COLVOCORESSES, Alden Partridge, 1918- A UNIFIED PLANE COORDINATE REFERENCE SYSTEM. The Ohio State University, Ph.D., 1965 Geography University Microfilms, Inc., Ann Arbor, Michigan A UNIFIED PLANE COORDINATE REFERENCE SYSTEM DISSERTATION Presented in Partial Fulfillment of the Requirements for The Degree Doctor of Philosophy in the Graduate School of The Ohio State University Alden P. Colvocoresses, B.S., M.Sc. Lieutenant Colonel, Corps of Engineers United States Army * * * * * The Ohio State University 1965 Approved by Adviser Department of Geodetic Science PREFACE This dissertation was prepared while the author was pursuing graduate studies at The Ohio State University. Although attending school under order of the United States Army, the views and opinions expressed herein represent solely those of the writer. A list of individuals and agencies contributing to this paper is presented as Appendix B. The author is particularly indebted to two organizations, The Ohio State University and the Army Map Service. Without the combined facilities of these two organizations the preparation of this paper could not have been accomplished. Dr. Ivan Mueller of the Geodetic Science Department of The Ohio State University served as adviser and provided essential guidance and counsel. ii VITA September 23, 1918 Born - Humboldt, Arizona 1941 oo.oo.o BoS. in Mining Engineering, University of Arizona 1941-1945 .... Military Service, European Theatre 1946-1950 o . o Mining Engineer, Magma Copper -
Implications for Gale Crater's Geochemistry
First detection of fluorine on Mars: Implications for Gale Crater’s geochemistry Olivier Forni, Michael Gaft, Michael Toplis, Samuel Clegg, Sylvestre Maurice, Roger Wiens, Nicolas Mangold, Olivier Gasnault, Violaine Sautter, Stéphane Le Mouélic, et al. To cite this version: Olivier Forni, Michael Gaft, Michael Toplis, Samuel Clegg, Sylvestre Maurice, et al.. First detection of fluorine on Mars: Implications for Gale Crater’s geochemistry. Geophysical Research Letters, American Geophysical Union, 2015, 42 (4), pp.1020-1028. 10.1002/2014GL062742. hal-02373397 HAL Id: hal-02373397 https://hal.archives-ouvertes.fr/hal-02373397 Submitted on 8 Jul 2021 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. Copyright PUBLICATIONS Geophysical Research Letters RESEARCH LETTER First detection of fluorine on Mars: Implications 10.1002/2014GL062742 for Gale Crater’s geochemistry Key Points: Olivier Forni1,2, Michael Gaft3, Michael J. Toplis1,2, Samuel M. Clegg4, Sylvestre Maurice1,2, • fl First detection of uorine at the 4 5 1,2 6 5 Martian surface Roger C. Wiens , Nicolas Mangold , Olivier Gasnault , Violaine Sautter , Stéphane Le Mouélic , 1,2 5 4 7 4 • High sensitivity of fluorine detection Pierre-Yves Meslin , Marion Nachon , Rhonda E. -
A Bibliography of Geomorphometry, the Quantitative Representation of Topography Supplement 1.0
U.S. DEPARTMENT OF THE INTERIOR U.S. GEOLOGICAL SURVEY A Bibliography of Geomorphometry, the Quantitative Representation of Topography Supplement 1.0 By RICHARD J. PIKE l Provides over 450 additions and corrections to the 1993 Bibliography of Geomorphometry and a brief update of recent advances OPEN-FILE REPORT 95-046 1995 This report is preliminary and has not been reviewed for conformity with US. Geological Survey editorial standards or with the North American Stratigraphic Code. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the US. Government 'MENLO PARK, CA 94025 A Bibliography of Geomorphometry, the Quantitative Representation of Topography Supplement 1.0 by Richard J. Pike Abstract This report adds over 450 entries (and makes several corrections) to the 1993 literature review of topographic quantification (geomorphometry), briefly reviews recent advances in the field, and describes four new applications of morphometry: landscape ecology, wind-energy prospecting, soil surveys, and image understanding. his is the first update of a bibliography discipline. Finally, four areas related to and introductory essay on morphometry have been identified since the Tgeomorphometry (or simply release of Pike (1993): landscape ecology, wind- morphometry), the numerical characterization energy prospecting, soil surveys, and image of topographic form (Pike, 1993). The understanding. supplement continues my drawing together the diverse and scattered literature on the subject and making it accessible to the research community. The need for such an effort remains Four New Applications evident from the rapidly growing use of square- grid digital elevation models (OEM's) to Significant additions to geomorphometry express topography for many different include papers appearing over the last few applications. -
A Geochemist in His Garden of Eden
A GEOCHEMIST IN HIS GARDEN OF EDEN WALLY BROECKER 2016 ELDIGIO PRESS Table of Contents Chapter 1 Pages Introduction ................................................................................................................. 1-13 Chapter 2 Paul Gast and Larry Kulp ......................................................................................... 14-33 Chapter 3 Phil Orr...................................................................................................................... 34-49 Chapter 4 230Th Dating .............................................................................................................. 50-61 Chapter 5 Mono Lake ................................................................................................................ 62-77 Chapter 6 Bahama Banks .......................................................................................................... 78-92 Chapter 7 Doc Ewing and his Vema ........................................................................................ 93-110 Chapter 8 Heezen and Ewing ................................................................................................ 111-121 Chapter 9 GEOSECS ............................................................................................................. 122-138 Chapter 10 The Experimental Lakes Area .............................................................................. 139-151 Table of Contents Chapter 11 Sea Salt ................................................................................................................. -
22–25 Oct. GSA 2017 Annual Meeting & Exposition
22–25 Oct. GSA 2017 Annual Meeting & Exposition JULY 2017 | VOL. 27, NO. 7 NO. 27, | VOL. 2017 JULY A PUBLICATION OF THE GEOLOGICAL SOCIETY OF AMERICA® JULY 2017 | VOLUME 27, NUMBER 7 SCIENCE 4 Extracting Bulk Rock Properties from Microscale Measurements: Subsampling and Analytical Guidelines M.C. McCanta, M.D. Dyar, and P.A. Dobosh GSA TODAY (ISSN 1052-5173 USPS 0456-530) prints news Cover: Mount Holyoke College astronomy students field-testing a and information for more than 26,000 GSA member readers and subscribing libraries, with 11 monthly issues (March/ Raman BRAVO spectrometer for field mineral identification, examin- April is a combined issue). GSA TODAY is published by The ing pegmatite minerals crosscutting a slightly foliated hornblende Geological Society of America® Inc. (GSA) with offices at quartz monzodiorite and narrow aplite dikes exposed in the spillway 3300 Penrose Place, Boulder, Colorado, USA, and a mail- of the Quabbin Reservoir. All three units are part of the Devonian ing address of P.O. Box 9140, Boulder, CO 80301-9140, USA. GSA provides this and other forums for the presentation Belchertown igneous complex in central Massachusetts, USA. of diverse opinions and positions by scientists worldwide, See related article, p. 4–9. regardless of race, citizenship, gender, sexual orientation, religion, or political viewpoint. Opinions presented in this publication do not reflect official positions of the Society. © 2017 The Geological Society of America Inc. All rights reserved. Copyright not claimed on content prepared GSA 2017 Annual Meeting & Exposition wholly by U.S. government employees within the scope of their employment. Individual scientists are hereby granted 11 Abstracts Deadline permission, without fees or request to GSA, to use a single figure, table, and/or brief paragraph of text in subsequent 12 Education, Careers, and Mentoring work and to make/print unlimited copies of items in GSA TODAY for noncommercial use in classrooms to further 13 Feed Your Brain—Lunchtime Enlightenment education and science. -
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 -
In Pdf Format
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Agenda Item IX-K: Aerospace Technology Research Report
Agenda Item IX-K Academic Quality and Workforce Aerospace Technology Research Conducted by Public Universities A Report to the Texas Legislature Senate Bill 458, 84th Texas Legislature June 2016 DRAFT Texas Higher Education Coordinating Board Robert W. Jenkins, CHAIR Austin Stuart W. Stedman, VICE CHAIR Houston David D. Teuscher, MD, SECRETARY TO THE BOARD Beaumont Arcilia C. Acosta Dallas S. Javaid Anwar Midland Haley DeLaGarza, STUDENT REPRESENTATIVE Victoria Fred Farias, III, O.D. McAllen Ricky A. Raven Sugar Land Janelle Shepard Weatherford John T. Steen Jr. San Antonio Raymund A. Paredes, COMMISSIONER OF HIGHER EDUCATION Agency Mission The Texas Higher Education Coordinating Board promotes access, affordability, quality, success, and cost efficiency in the state’s institutions of higher education, through Closing the Gaps and its successor plan, resulting in a globally competent workforce that positions Texas as an international leader in an increasingly complex world economy. Agency Vision The THECB will be recognized as an international leader in developing and implementing innovative higher education policy to accomplish our mission. Agency Philosophy The THECB will promote access to and success in quality higher education across the state with the conviction that access and success without quality is mediocrity and that quality without access and success is unacceptable. The Coordinating Board’s core values are: Accountability: We hold ourselves responsible for our actions and welcome every opportunity to educate stakeholders about our policies, decisions, and aspirations. Efficiency: We accomplish our work using resources in the most effective manner. Collaboration: We develop partnerships that result in student success and a highly qualified, globally competent workforce.