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Volcanism on Mars
Author's personal copy Chapter 41 Volcanism on Mars James R. Zimbelman Center for Earth and Planetary Studies, National Air and Space Museum, Smithsonian Institution, Washington, DC, USA William Brent Garry and Jacob Elvin Bleacher Sciences and Exploration Directorate, Code 600, NASA Goddard Space Flight Center, Greenbelt, MD, USA David A. Crown Planetary Science Institute, Tucson, AZ, USA Chapter Outline 1. Introduction 717 7. Volcanic Plains 724 2. Background 718 8. Medusae Fossae Formation 725 3. Large Central Volcanoes 720 9. Compositional Constraints 726 4. Paterae and Tholi 721 10. Volcanic History of Mars 727 5. Hellas Highland Volcanoes 722 11. Future Studies 728 6. Small Constructs 723 Further Reading 728 GLOSSARY shield volcano A broad volcanic construct consisting of a multitude of individual lava flows. Flank slopes are typically w5, or less AMAZONIAN The youngest geologic time period on Mars identi- than half as steep as the flanks on a typical composite volcano. fied through geologic mapping of superposition relations and the SNC meteorites A group of igneous meteorites that originated on areal density of impact craters. Mars, as indicated by a relatively young age for most of these caldera An irregular collapse feature formed over the evacuated meteorites, but most importantly because gases trapped within magma chamber within a volcano, which includes the potential glassy parts of the meteorite are identical to the atmosphere of for a significant role for explosive volcanism. Mars. The abbreviation is derived from the names of the three central volcano Edifice created by the emplacement of volcanic meteorites that define major subdivisions identified within the materials from a centralized source vent rather than from along a group: S, Shergotty; N, Nakhla; C, Chassigny. -
Dikes of Distinct Composition Intruded Into Noachian-Aged Crust Exposed in the Walls of Valles Marineris Jessica Flahaut, John F
Dikes of distinct composition intruded into Noachian-aged crust exposed in the walls of Valles Marineris Jessica Flahaut, John F. Mustard, Cathy Quantin, Harold Clenet, Pascal Allemand, Pierre Thomas To cite this version: Jessica Flahaut, John F. Mustard, Cathy Quantin, Harold Clenet, Pascal Allemand, et al.. Dikes of dis- tinct composition intruded into Noachian-aged crust exposed in the walls of Valles Marineris. Geophys- ical Research Letters, American Geophysical Union, 2011, 38, pp.L15202. 10.1029/2011GL048109. hal-00659784 HAL Id: hal-00659784 https://hal.archives-ouvertes.fr/hal-00659784 Submitted on 19 Jan 2012 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. GEOPHYSICAL RESEARCH LETTERS, VOL. 38, L15202, doi:10.1029/2011GL048109, 2011 Dikes of distinct composition intruded into Noachian‐aged crust exposed in the walls of Valles Marineris Jessica Flahaut,1 John F. Mustard,2 Cathy Quantin,1 Harold Clenet,1 Pascal Allemand,1 and Pierre Thomas1 Received 12 May 2011; revised 27 June 2011; accepted 30 June 2011; published 5 August 2011. [1] Valles Marineris represents the deepest natural incision and HiRISE (High Resolution Imaging Science Experiment) in the Martian upper crust. -
Pre-Mission Insights on the Interior of Mars Suzanne E
Pre-mission InSights on the Interior of Mars Suzanne E. Smrekar, Philippe Lognonné, Tilman Spohn, W. Bruce Banerdt, Doris Breuer, Ulrich Christensen, Véronique Dehant, Mélanie Drilleau, William Folkner, Nobuaki Fuji, et al. To cite this version: Suzanne E. Smrekar, Philippe Lognonné, Tilman Spohn, W. Bruce Banerdt, Doris Breuer, et al.. Pre-mission InSights on the Interior of Mars. Space Science Reviews, Springer Verlag, 2019, 215 (1), pp.1-72. 10.1007/s11214-018-0563-9. hal-01990798 HAL Id: hal-01990798 https://hal.archives-ouvertes.fr/hal-01990798 Submitted on 23 Jan 2019 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. Open Archive Toulouse Archive Ouverte (OATAO ) OATAO is an open access repository that collects the wor of some Toulouse researchers and ma es it freely available over the web where possible. This is an author's version published in: https://oatao.univ-toulouse.fr/21690 Official URL : https://doi.org/10.1007/s11214-018-0563-9 To cite this version : Smrekar, Suzanne E. and Lognonné, Philippe and Spohn, Tilman ,... [et al.]. Pre-mission InSights on the Interior of Mars. (2019) Space Science Reviews, 215 (1). -
Icelandic Analogs to Martian Flood Lavas
Edinburgh Research Explorer Icelandic analogs to Martian flood lavas Citation for published version: Keszthelyi, L, Thordarson, T, McEwen, A, Haack, H, Guilbaud, MN, Self, S & Rossi, MJ 2004, 'Icelandic analogs to Martian flood lavas', Geochemistry, Geophysics, Geosystems, vol. 5, no. 11, Q11014, pp. 1-32. https://doi.org/10.1029/2004GC000758 Digital Object Identifier (DOI): 10.1029/2004GC000758 Link: Link to publication record in Edinburgh Research Explorer Document Version: Publisher's PDF, also known as Version of record Published In: Geochemistry, Geophysics, Geosystems Publisher Rights Statement: Published in Geochemistry, Geophysics, Geosystems by the American Geophysical Union (2004) General rights Copyright for the publications made accessible via the Edinburgh Research Explorer is retained by the author(s) and / or other copyright owners and it is a condition of accessing these publications that users recognise and abide by the legal requirements associated with these rights. Take down policy The University of Edinburgh has made every reasonable effort to ensure that Edinburgh Research Explorer content complies with UK legislation. If you believe that the public display of this file breaches copyright please contact [email protected] providing details, and we will remove access to the work immediately and investigate your claim. Download date: 06. Oct. 2021 Article Geochemistry 3 Volume 5, Number 11 Geophysics 23 November 2004 Q11014, doi:10.1029/2004GC000758 GeosystemsG G ISSN: 1525-2027 AN ELECTRONIC JOURNAL OF THE EARTH -
Cerberus.Pdf
(lP,IIP,U' By Gaynor Borade Greek mythology comprises a huge pantheon, extensive use of anthropomorphism and mythical creatures that ore symbotic. Cerberus, the three headed dog was believed to be the guardian of the reotm of death, or Hades. Cerberus, it was believed, prevented those who crossed the river of death, Styx, from escoping. River Styx was supposed to be the boundory belween the Underworld and Earth. Greek mythology propounded thot Hodes or ihe Underworld wos encircled nine times by River Styx and thot the rivers Phlegethon, Cocytus, Lelhe, Eridanos and Acheron converged with Styx on the 'Great Marsh'. Cerberus guorded the Great Marsh. Importance of Styx in Greek Mythotogy: Hades ond Persephone were believed to be the mortol portals in the Underworld. This reotm wos atso home to Phlegyos or guardian of the River Phlegethon, Charon or Kharon, the ferrymon, ond the living waters of Styx. Styx wos believed to have miraculous powers thot could make o person immorfol, resulting in the grove need for it to be guorded. This reolm relates to the concept of 'hel[' in Christianity and the 'Paradise losf', in the Iiterary genius of 'The Divine Comedy'. In Greek myihology, the ferrymon Charon was in charge of iransporting souls across the Styx, into the Underworld. Here, it was believed thaf the sullen were drowned in Sfyx's muddy waters. Cerberus:The Guardion Cerberus, the mythical guordian of River Styx has been immorlalized through many works of ancient Greek liferoture, ort ond orchitecture. Cerberus is easity recognizabte among the other members of the pontheon due to his three heads. -
Chapter Vi Report of Divisions, Commissions, and Working
CHAPTER VI REPORT OF DIVISIONS, COMMISSIONS, AND WORKING GROUPS Downloaded from https://www.cambridge.org/core. IP address: 170.106.33.42, on 24 Sep 2021 at 09:23:58, subject to the Cambridge Core terms of use, available at https://www.cambridge.org/core/terms. https://doi.org/10.1017/S0251107X00011937 DIVISION I FUNDAMENTAL ASTRONOMY Division I provides a focus for astronomers studying a wide range of problems related to fundamental physical phenomena such as time, the intertial reference frame, positions and proper motions of celestial objects, and precise dynamical computation of the motions of bodies in stellar or planetary systems in the Universe. PRESIDENT: P. Kenneth Seidelmann U.S. Naval Observatory, 3450 Massachusetts Ave NW Washington, DC 20392-5100, US Tel. + 1 202 762 1441 Fax. +1 202 762 1516 E-mail: [email protected] BOARD E.M. Standish President Commission 4 C. Froeschle President Commisison 7 H. Schwan President Commisison 8 D.D. McCarthy President Commisison 19 E. Schilbach President Commisison 24 T. Fukushima President Commisison 31 J. Kovalevsky Past President Division I PARTICIPATING COMMISSIONS: COMMISSION 4 EPHEMERIDES COMMISSION 7 CELESTIAL MECHANICS AND DYNAMICAL ASTRONOMY COMMISSION 8 POSITIONAL ASTRONOMY COMMISSION 19 ROTATION OF THE EARTH COMMISSION 24 PHOTOGRAPHIC ASTROMETRY COMMISSION 31 TIME Downloaded from https://www.cambridge.org/core. IP address: 170.106.33.42, on 24 Sep 2021 at 09:23:58, subject to the Cambridge Core terms of use, available at https://www.cambridge.org/core/terms. https://doi.org/10.1017/S0251107X00011937 COMMISSION 4: EPHEMERIDES President: H. Kinoshita Secretary: C.Y. Hohenkerk Commission 4 held one business meeting. -
The Gravity of Hades
VOL. 75, NO. 5, DECEMBER2002 335 The Gravityof Hades ANDREWJ. SIMOSON King College Bristol, TN 37620 [email protected] Imaginebeing beamedinto a chamberdeep withinthe Earth,such as depictedin the JulesVerne cavern of FIGURE1. Is the accelerationdue to gravitystronger or weaker in the chamberthan at the surfaceof the Earth?If the readeris hesitantin answering immediately,here's how LeonardEuler answered the questionin 1760 [3, volume I, LetterL, p. 182]: We are certain ... that gravity ... acts with the greatest force at the surface of the earth, and is diminished in proportion as it removesfrom thence, whether by penetrating towards the centre or rising above the surface of the globe. Figure1 Frontispiecefor Verne's1871 publication of Journeyto the Centerof the Earth, 100 miles below Iceland To answer this question, we consider various models of the Earth's structure that have been proposed over the years. We show that ? for homogeneouslydense planets-Euler's implicitmodel-gravity weakenswith descentfrom the surface; ? for a planetpossessing a homogeneousmantle that is less than 2/3 as dense as its core, a local minimumfor gravityintensity exists withina sufficientlythick mantle; ? for our own Earth,having a solid innercore, a less dense liquidouter core, and an extensiveeven less densemantle, gravity intensifies with descentfrom -9.8 m/s2 at the surfaceto an extremeof -10.8 m/s2 wherethe mantlemeets the core. We also give a conditioninvolving only surfacedensity and mean density that deter- mineswhether gravity increases or decreaseswith depthfrom the surfaceof a planet; and we concludewith an analysisof a body falling througha classicallyenvisioned hole through the Earth. 336 MATHEMATICSMAGAZINE Some preliminary classical mechanics To find the gravitational acceleration induced by the Earth on a particularpoint P, we follow Newton and first find the gravitational acceleration induced by each point of the Earth on P, and then take the aggregate of these accelerations as the total acceleration induced by the Earth. -
Do Young Martian Ray Craters Have Ages Consistent with the Crater Count System?
Icarus 208 (2010) 621–635 Contents lists available at ScienceDirect Icarus journal homepage: www.elsevier.com/locate/icarus Do young martian ray craters have ages consistent with the crater count system? William K. Hartmann a,*, Cathy Quantin b, Stephanie C. Werner c, Olga Popova d a Planetary Science Institute, 1700 E. Ft. Lowell Rd., Suite 106, Tucson, AZ 85719-2395, United States b Laboratoire des Sciences de la Terre, Université Claude Bernard, Lyon1, 2, rue Raphaël Dubois, 69622 Villeurbanne Cedex, France c Physics of Geological Processes, University of Oslo, PO 1048 Blindern, 0316 Oslo, Norway d Institute for Dynamics of Geospheres, Russian Academy of Sciences, Leninsky Prospekt 38, Bldg. 1, 119334 Moscow, Russia article info abstract Article history: McEwen et al. (McEwen, A.S., Preblich, B.S., Turtle, E.P., Artemieva, N.A., Golombek, M.P., Hurst, M., Kirk, Received 9 September 2009 R.L., Burr, D.M., Christensen, P. [2005]. Icarus 176, 351–381) developed a useful test for the internal con- Revised 19 February 2010 sistency of crater-count chronometry systems. They argued that certain multi-kilometer, fresh-looking Accepted 24 March 2010 martian craters with prominent rays should be the youngest or near-youngest craters in their size range. Available online 21 April 2010 The ‘‘McEwen et al. test” is that the ages determined from crater densities of the smallest superimposed craters (typically diameter D 5–20 m) should thus be comparable to the expected formation intervals Keywords: of the host primary. McEwen et al. concluded from MOC data that crater chronometry failed this test by Crater chronology factors of 700–2000. -
Special Regions’’: Findings of the Second MEPAG Special Regions Science Analysis Group (SR-SAG2)
ASTROBIOLOGY Volume 14, Number 11, 2014 News & Views ª Mary Ann Liebert, Inc. DOI: 10.1089/ast.2014.1227 A New Analysis of Mars ‘‘Special Regions’’: Findings of the Second MEPAG Special Regions Science Analysis Group (SR-SAG2) John D. Rummel,1 David W. Beaty,2 Melissa A. Jones,2 Corien Bakermans,3 Nadine G. Barlow,4 Penelope J. Boston,5 Vincent F. Chevrier,6 Benton C. Clark,7 Jean-Pierre P. de Vera,8 Raina V. Gough,9 John E. Hallsworth,10 James W. Head,11 Victoria J. Hipkin,12 Thomas L. Kieft,5 Alfred S. McEwen,13 Michael T. Mellon,14 Jill A. Mikucki,15 Wayne L. Nicholson,16 Christopher R. Omelon,17 Ronald Peterson,18 Eric E. Roden,19 Barbara Sherwood Lollar,20 Kenneth L. Tanaka,21 Donna Viola,13 and James J. Wray22 Abstract A committee of the Mars Exploration Program Analysis Group (MEPAG) has reviewed and updated the description of Special Regions on Mars as places where terrestrial organisms might replicate (per the COSPAR Planetary Protection Policy). This review and update was conducted by an international team (SR-SAG2) drawn from both the biological science and Mars exploration communities, focused on understanding when and where Special Regions could occur. The study applied recently available data about martian environments and about terrestrial organisms, building on a previous analysis of Mars Special Regions (2006) undertaken by a similar team. Since then, a new body of highly relevant information has been generated from the Mars Reconnaissance Orbiter (launched in 2005) and Phoenix (2007) and data from Mars Express and the twin Mars Exploration Rovers (all 2003). -
N95- 16186 Channels Draining from Capri and Eos Chasmata Into Southern Chryse (Simud
24 Mars Pathfinder Landing Sire Workshop knowledge, then they will be more difficult elsewhere where the outliers flanked by younger material within Nepenthes Mensas and questions are unknown. Aeolis Mensas, but such areas are rugged and unsuitable for a safe Conclusions and Site Recommendations: It is tempting to landing. However, parts of western Arabia Terra extend to accept- set the sights for future prospects on many of the additional interest- able elevations and are reasonably smooth. ing areas defined on Mars since the Viking mission and expand the A second strategy is to sample materials at the mouth of an database for ground truth to new and different terrains. This desire outflow channel that drains from the highlands. Channels may should be balanced with the critical need for success in planetary terminate in deltas, alluvial fans, or sheet deposits. For simplicity exploration in general and avoidance of an inconclusive mission these deposits will be refered to as “fans.” Fans provide materials result in particular. An important goal should be learning how to from a large sampling area, and dissected fans offer the advantage operate on Mars and addressing answerable questions. A fmstart of providing a vertical section of exposed stratification that records on the latter can be attained by a new mission to Chryse Planitia in the history of the outflow. the region specified, in which theexisting ground truth of the Viking On first appraisal, any fan at the mouth of a channel draining Lander 1 is used to constrain the engineering choices and to design from highlands offers a potential target, but not all fans offer equal appropriate instrument goals to fully utilize the lander limitations opportunities. -
Planets Solar System Paper Contents
Planets Solar system paper Contents 1 Jupiter 1 1.1 Structure ............................................... 1 1.1.1 Composition ......................................... 1 1.1.2 Mass and size ......................................... 2 1.1.3 Internal structure ....................................... 2 1.2 Atmosphere .............................................. 3 1.2.1 Cloud layers ......................................... 3 1.2.2 Great Red Spot and other vortices .............................. 4 1.3 Planetary rings ............................................ 4 1.4 Magnetosphere ............................................ 5 1.5 Orbit and rotation ........................................... 5 1.6 Observation .............................................. 6 1.7 Research and exploration ....................................... 6 1.7.1 Pre-telescopic research .................................... 6 1.7.2 Ground-based telescope research ............................... 7 1.7.3 Radiotelescope research ................................... 8 1.7.4 Exploration with space probes ................................ 8 1.8 Moons ................................................. 9 1.8.1 Galilean moons ........................................ 10 1.8.2 Classification of moons .................................... 10 1.9 Interaction with the Solar System ................................... 10 1.9.1 Impacts ............................................ 11 1.10 Possibility of life ........................................... 12 1.11 Mythology ............................................. -
N95- 16186 Channels Draining from Capri and Eos Chasmata Into Southern Chryse (Simud
https://ntrs.nasa.gov/search.jsp?R=19950009771 2020-06-16T08:53:33+00:00Z View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by NASA Technical Reports Server 24 Mars Pathfinder Landing Sire Workshop knowledge, then they will be more difficult elsewhere where the outliers flanked by younger material within Nepenthes Mensas and questions are unknown. Aeolis Mensas, but such areas are rugged and unsuitable for a safe Conclusions and Site Recommendations: It is tempting to landing. However, parts of western Arabia Terra extend to accept- set the sights for future prospects on many of the additional interest- able elevations and are reasonably smooth. ing areas defined on Mars since the Viking mission and expand the A second strategy is to sample materials at the mouth of an database for ground truth to new and different terrains. This desire outflow channel that drains from the highlands. Channels may should be balanced with the critical need for success in planetary terminate in deltas, alluvial fans, or sheet deposits. For simplicity exploration in general and avoidance of an inconclusive mission these deposits will be refered to as “fans.” Fans provide materials result in particular. An important goal should be learning how to from a large sampling area, and dissected fans offer the advantage operate on Mars and addressing answerable questions. A fmstart of providing a vertical section of exposed stratification that records on the latter can be attained by a new mission to Chryse Planitia in the history of the outflow. the region specified, in which theexisting ground truth of the Viking On first appraisal, any fan at the mouth of a channel draining Lander 1 is used to constrain the engineering choices and to design from highlands offers a potential target, but not all fans offer equal appropriate instrument goals to fully utilize the lander limitations opportunities.