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Mars Geological Enigmas: From the Late Noachian Epoch to the Present Day presents outstanding questions on the geology of Mars and divergent viewpoints based on varying interpretations and analyses. The result is a robust and comprehensive discussion that provides opportunities for planetary scientists to develop their own opinions and ways forward. Each theme opens with an introduction that includes background on the topic and lays out questions to be addressed. Alternate perspectives are covered for each topic, including methods, observations, analyses, and in-depth discussion of the conclusions. Chapters within each theme reference each other to facilitate comparison and deeper understanding of divergent opinions.
- Offers a transchronological view of the geological history of Mars, addressing thematic questions from a broad temporal perspective
- Discusses outstanding questions on Mars from diverging perspectives
- Includes key questions and answers, as well as a look ahead to which puzzles remain to be solved
Advanced undergraduate, graduates, post docs, researchers, and faculty members in planetary science
Richard J. Soare, Susan J. Conway, Jean-Pierre Williams, Dorothy Oehler
Prologue - Why Mars?
James B. Garvin
Chapter 1. Current enigmas identified by the Curiosity rover at the Gale crater
Abigail A. Fraeman
What sourced the enormous flows and volumes that formed the outflow channels and highland-margin contacts of ancient Mars?
Chapter 2. The fluvial interpretation of outflow channels on Mars: landforms, processes and paleoenvironmental implications
Colman J. Gallagher, Rickbir Bahia
Chapter 3. Was there an early Mars ocean?
Timothy J. Parker, Bruce G. Bills
Chapter 4. Dry megafloods on Mars: formation of the outflow channels by voluminous effusions of low viscosity lava
Can impact craters be used to derive reliable surface ages on Mars?
Chapter 5. Challenges in crater chronology arising from the Jezero impact crater
Lior Rubinenko, Tyler M. Powell, Jean-Pierre Williams
Chapter 6. The role of secondary craters on Martian crater chronology
Jean-Pierre Williams, Tyler M. Powell
The perplexing story of methane on Mars
Chapter 7. Methane on Mars: subsurface sourcing and conflicting atmospheric measurements
Dorothy Oehler, Giuseppe Etiope
Chapter 8. A review of the meteor shower hypothesis for methane on Mars
Does water flow on Martian slopes?
Chapter 9. The possible role of water in recent surface-processes on Mars
Susan J. Conway, David Stillman
Chapter 10. Dry formation of recent Martian slope-features
Earth analogues for Mars - a plethora of choice!
Chapter 11. The McMurdo Dry Valleys of Antarctica: a geological, environmental and ecological analog to the Martian surfac
Mark Salvatore, Joe Levy
Chapter 12. The Atacama Desert: a window into late Mars surface habitability
Alfonso Davila, Jocelyne DiRuggerio, Kimberly Warren-Rhodes
Chapter 13. Ancient life in diverse habitats from the Pilbara Craton and Mount Bruce Supergroup, western Australia: analogues for early Mars?
Martin J. Van Kranendonk, Raphael Baumgartner, Tomaso Bonognali, Kenichiro Sugitani, Malcolm Walter
The freeze-thaw cycling of water at/near the Martian surface: present, past and possible?
Chapter 14. Pingo-like mounds and possible periglaciation/glaciation at/adjacent to the Moreux impact crater, Mars
Richard J. Soare, Jean-Pierre Williams, Susan J. Conway, M.Ramy El-Maarry
Chapter 15. Thermokarst-like depressions on Mars: age constraints on ice degradation in Utopia Planitia
Hemispheres together: towards understanding the Mars dichotomy
Chapter 16. Forging the Mars crustal-dichotomy: the giant impact hypothesis
Robert I. Citron
Chapter 17. Endogenic origin of the Martian hemispheric dichotomy?
- No. of pages:
- © Elsevier 2021
- 23rd May 2021
- Paperback ISBN:
- eBook ISBN:
Richard Soare is a physical geographer specializing in periglacial (cold-climate, non-glacial landscapes). Through the last twenty years he has spent considerable time off-planet, intellectually, i.e. identifying landscapes on Mars present or past possibly molded by the freeze-thaw cycling of water. His work spans the red planet geographically, ranging from the plains of Utopia Planitia in the northern hemisphere and the Moreux impact-crater at the Mars dichotomy through to the Argyre impact-crater in the southern hemisphere. Recently, he co-edited Dynamic Mars: Recent and Current Landscape Evolution on the red planet and a special issue of Icarus: Current and Recent Landscape Evolution on Mars.
Professor, Department of Geography, Dawson College, Canada
Susan Conway is a CNRS research scientist in Nantes, France, having graduated with a PhD in planetary science from the Open University (United Kingdom) in 2010. She is chair of the International Association for Geomorphologists (IAG) Planetary Geomorphology Working Group, and has run the Planetary Geomorphology session at the European Geoscience Union since 2011. She is lead editor for a collection of papers on Martian gullies and their Earth analogues, based on the workshop she organized at the Geological Society of London in June 2016 and is co-editor on a collection of papers entitled "Frontiers in Geomorphometry". She is a team member on the High Resolution Imaging Science Experiment (HiRISE) instrument on NASA's Mars Reconnaissance Orbiter and Guest Investigator on the ESA Trace Gas Orbiter mission to Mars, specifically focused on the CaSSIS camera and NOMAD/ACS spectrometer instruments. She is on the author list of 35 peer-reviewed papers concerning the geomorphology of Earth, Mars, Mercury, the Moon and the asteroid Vesta. Her work is concentrated around glacial, periglacial and fluvial landforms on Mars, encompassing field, remote sensing and laboratory simulation data, with a specialty in analysis of 3D terrain data.
CNRS Researcher, CNRS UMR 6112 Laboratoire de Planetologie et Geodynamique, Universite de Nantes, France
Jean-Pierre Williams is a researcher at the University of California in Los Angeles (UCLA). He received his PhD in Geophysics and Space Physics from UCLA and was a research scientist at the California Institute of Technology before returning to UCLA. His work focuses on the geology and physics of the inner planets. He is the author/co-author of over 50 peer-reviewed publications and is currently the Deputy-PI of the Diviner Lunar Radiometer Experiment on the Lunar Reconnaissance Orbiter.
Researcher, University of California in Los Angeles (UCLA), USA
Dorothy Oehler is a planetary geologist and Precambrian paleontologist seeking ways to identify biosignatures of potential, past life on Mars and predict optimal locations in which to search for biosignatures. She obtained her Ph.D. from the University of California at Los Angeles (UCLA), then spent several years in petroleum research focusing on methane in the subsurface of the Earth. She now applies that background to investigations of methane on Mars. Dr. Oehler spent the years from 2003 to 2016 at Johnson Space Center and was a member of the 1st Mars Science Laboratory (Curiosity Rover) Science Team. Currently, she continues her work on methane on Mars, earliest life on Earth, and potential biosignatures on Mars. In 2012, Dr. Oehler was named Distinguished Alumna from the Department of Earth, Planetary, and Space Sciences at UCLA.
Senior Scientist, Planetary Science Institute, Tucson, Arizona, USA
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