Lauren Edgar, Ph.D. (Former Employee)
Science and Products
Filter Total Items: 41
Extraformational sediment recycling on Mars Extraformational sediment recycling on Mars
Extraformational sediment recycling (old sedimentary rock to new sedimentary rock) is a fundamental aspect of Earth’s geological record; tectonism exposes sedimentary rock, whereupon it is weathered and eroded to form new sediment that later becomes lithified. On Mars, tectonism has been minor, but two decades of orbiter instrument–based studies show that some sedimentary rocks...
Authors
Kenneth S. Edgett, Steven Banham, Kristen A. Bennett, Lauren A. Edgar, Christopher S. Edwards, Alberto Fairen, Christopher M. Fedo, Deirdra M. Fey, James B. Garvin, John P. Grotzinger, Sanjeev Gupta, Marie Henderson, Christopher H House, Nicolas Mangold, Scott McLennan, Horton E. Newsom, Scott Rowland, Kirsten L. Siebach, Lucy Thompson, Scott VanBommel, Roger C. Wiens, Rebecca Williams, Aileen Yingst
Ancient Martian aeolian sand dune deposits recorded in the stratigraphy of Valles Marineris and implications for past climates Ancient Martian aeolian sand dune deposits recorded in the stratigraphy of Valles Marineris and implications for past climates
Aeolian sediment transport, deposition, and erosion have been ongoing throughout Mars's history. This record of widespread aeolian processes is preserved in landforms and geologic units that retain important clues about past environmental conditions including wind patterns. In this study we describe landforms within Melas Chasma, Valles Marineris, that occur in distinct groups with...
Authors
Matthew Chojnacki, Lori K. Fenton, Aaron R Weintraub, Lauren A. Edgar, Mohini Jeetendra Jodhpurkar, Christopher S. Edwards
Evidence for a diagenetic origin of Vera Rubin Ridge, Gale Crater, Mars: Summary and synthesis of Curiosity's exploration campaign Evidence for a diagenetic origin of Vera Rubin Ridge, Gale Crater, Mars: Summary and synthesis of Curiosity's exploration campaign
This paper provides an overview of the Curiosity rover's exploration at Vera Rubin ridge (VRR) and summarizes the science results. VRR is a distinct geomorphic feature on lower Aeolis Mons (informally known as Mount Sharp) that was identified in orbital data based on its distinct texture, topographic expression, and association with a hematite spectral signature. Curiosity conducted...
Authors
Abigail A. Fraeman, Lauren A. Edgar, Elizabeth B. Rampe, Lucy M. Thompson, Jens Frydenvang, Christopher M. Fedo, Jeff G. Catalano, William E. Dietrich, Travis S. J. Gabriel, John P. Grotzinger, Jonas L’Haridon, Nicholas Mangold, Vivian Z. Sun, Christopher H House, Alexander Bryk, Craig Hardgrove, Sean Czarnecki, Kathryn M. Stack, Richard V. Morris, Ray E. Arvidson, Steve G. Banham, Kristen A. Bennett, Jon C. Bridges, Christopher S. Edwards, Woodward W. Fischer, Valerie K. Fox, Sanjeev Gupta, Briony H. N. Horgan, Sammantha R. Jacob, Jeffrey R. Johnson, Sarah S. Johnson, David R. Rubin, Mark R Salvatore, Susanne P. Schwenzer, Kirsten L. Siebach, Nathan T. Stein, Stuart Turner, Danika F. Wellington, Roger C. Wiens, Amy J. Williams, G.A. Davidson, Gregory M. Wong
The chemostratigraphy of the Murray formation and role of diagenesis at Vera Rubin ridge in Gale crater, Mars, as observed by the ChemCam instrument The chemostratigraphy of the Murray formation and role of diagenesis at Vera Rubin ridge in Gale crater, Mars, as observed by the ChemCam instrument
Geochemical results are presented from Curiosity’s exploration of the Vera Rubin ridge (VRR), in addition to the full chemostratigraphy of the predominantly lacustrine mudstone Murray formation up to and including VRR. VRR is a prominent ridge flanking Aeolis Mons (informally Mt. Sharp), the central mound in Gale crater, Mars, and was a key area of interest for the Mars Science...
Authors
Jens Frydenvang, Nicholas Mangold, Roger C. Wiens, Abigail A. Fraeman, Lauren A. Edgar, Christopher M. Fedo, Jonas L’Haridon, Candice C. Bedford, Sanjeev Gupta, John P. Grotzinger, Jon C. Bridges, Ben C. Clark, Elizabeth B. Rampe, Olivier Gasnaut, Sylvestre Maurice, Patrick J. Gasda, Nina L. Lanza, Ann M. Olilla, Pierre-Yves Meslin, Valerie Payre, Fred J. Calef, Mark R Salvatore, Christopher H House
A lacustrine paleoenvironment recorded at Vera Rubin ridge, Gale crater: Overview of the sedimentology and stratigraphy observed by the Mars Science Laboratory Curiosity rover A lacustrine paleoenvironment recorded at Vera Rubin ridge, Gale crater: Overview of the sedimentology and stratigraphy observed by the Mars Science Laboratory Curiosity rover
For ~500 Martian solar days (sols), the Mars Science Laboratory team explored Vera Rubin ridge (VRR), a topographic feature on the northwest slope of Aeolis Mons. Here we review the sedimentary facies and stratigraphy observed during sols 1,800–2,300, covering more than 100 m of stratigraphic thickness. Curiosity's traverse includes two transects across the ridge, which enables...
Authors
Lauren A. Edgar, Christopher M. Fedo, Sanjeev Gupta, Steve G. Banham, Abigail A. Fraeman, John P. Grotzinger, Kathryn M. Stack, Nathan T. Stein, Kristen A. Bennett, Frances Rivera-Hernandez, Vivian Z. Sun, Kenneth S. Edgett, David M. Rubin, Christopher H House, Jason K. Van Beek
Applied lunar science on Artemis III in support of in situ resource utilization Applied lunar science on Artemis III in support of in situ resource utilization
The Artemis Science Goals and Strategy are focused on basic or fundamental science, neglecting the vital field of “applied” geoscience that fits between “pure” science and engineering to provide near-term practical benefits for human activities.
Authors
Laszlo P. Keszthelyi, Kristen A. Bennett, Lisa R. Gaddis, Lillian R. Ostrach, Lauren A. Edgar
Evidence for plunging river plume deposits in the Pahrump Hills member of the Murray formation, Gale crater, Mars Evidence for plunging river plume deposits in the Pahrump Hills member of the Murray formation, Gale crater, Mars
Recent robotic missions to Mars have offered new insights into the extent, diversity and habitability of the Martian sedimentary rock record. Since the Curiosity rover landed in Gale crater in August 2012, the Mars Science Laboratory Science Team has explored the origins and habitability of ancient fluvial, deltaic, lacustrine and aeolian deposits preserved within the crater. This study...
Authors
Kathryn M. Stack, John P. Grotzinger, Michael P. Lamb, Sanjeev Gupta, David M. Rubin, Linda C. Kah, Lauren A. Edgar, Deirdra M. Fey, Joel A. Hurowitz, Marie J. McBride, Frances Rivera-Hernandez, Dawn Y. Sumner, Jason K. Van Beek, Rebecca M. E. Williams, R. Aileen Yingst
Overview of spirit microscopic imager results Overview of spirit microscopic imager results
This paper provides an overview of Mars Exploration Rover Spirit Microscopic Imager (MI) operations and the calibration, processing, and analysis of MI data. The focus of this overview is on the last five Earth years (2005–2010) of Spirit's mission in Gusev crater, supplementing the previous overview of the first 450 sols of the Spirit MI investigation. Updates to radiometric calibration...
Authors
Kenneth E. Herkenhoff, Steve W Squyres, Raymond E. Arvidson, Shoshanna B Cole, Rob Sullivan, Aileen Yingst, Nathalie Cabrol, Ella Lee, Janet Richie, Robert M. Sucharski, Fred J. Calef, James F. Bell, Mary Chapman, Paul Geissler, Lauren A. Edgar, Brenda Franklin, Joel A. Hurowitz, Elsa Jensen, Jeffrey R. Johnson, Randolph L. Kirk, Peter Lanagan, Kevin Mullins, Craig Leff, Justin Maki, Bonnie L. Redding, Melissa Rice, Michael H. Sims, Annette Sunda, Nicole Spanovich, Richard Springer, Laurence A. Soderblom, Alicia Vaughan
Complex bedding geometry in the upper portion of Aeolis Mons, Gale crater, Mars Complex bedding geometry in the upper portion of Aeolis Mons, Gale crater, Mars
The Upper formation of Aeolis Mons in Gale crater exhibits curvilinear bedding patterns on the surfaces of several erosional benches that have been interpreted as cross-bedding. We use High Resolution Imaging Science Experiment (HiRISE) stereo topography to test this hypothesis by measuring the bedding geometry within these benches. The bedding geometry is consistent with aeolian cross...
Authors
Ryan B. Anderson, Lauren A. Edgar, David M. Rubin, Kevin W. Lewis, Claire Newman
Ancient Martian aeolian processes and palaeomorphology reconstructed from the Stimson formation on the lower slope of Aeolis Mons, Gale crater, Mars Ancient Martian aeolian processes and palaeomorphology reconstructed from the Stimson formation on the lower slope of Aeolis Mons, Gale crater, Mars
Reconstruction of the palaeoenvironmental context of Martian sedimentary rocks is central to studies of ancient Martian habitability and regional palaeoclimate history. This paper reports the analysis of a distinct aeolian deposit preserved in Gale crater, Mars, and evaluates its palaeomorphology, the processes responsible for its deposition, and its implications for Gale crater...
Authors
Steve G. Banham, Sanjeev Gupta, David M. Rubin, Jessica A. Watkins, Dawn Y. Sumner, Kenneth S. Edgett, John P. Grotzinger, Kevin W. Lewis, Lauren A. Edgar, Kathryn M. Stack, Robert Barnes, James F. Bell, Mackenzie D. Day, Ryan C. Ewing, Mathieu G.A. Lapotre, Nathan T. Stein, Frances Rivera-Hernandez, Ashwin R. Vasavada
Shaler: in situ analysis of a fluvial sedimentary deposit on Mars Shaler: in situ analysis of a fluvial sedimentary deposit on Mars
This paper characterizes the detailed sedimentology of a fluvial sandbody on Mars for the first time and interprets its depositional processes and palaeoenvironmental setting. Despite numerous orbital observations of fluvial landforms on the surface of Mars, ground-based characterization of the sedimentology of such fluvial deposits has not previously been possible. Results from the NASA...
Authors
Lauren A. Edgar, Sanjeev Gupta, David M. Rubin, Kevin W. Lewis, Gary A. Kocurek, Ryan B. Anderson, James F. Bell, Gilles Dromart, Kenneth S. Edgett, John P. Grotzinger, Craig Hardgrove, Linda C. Kah, Richard A. LeVeille, Michael C. Malin, Nicholas Mangold, Ralph E. Milliken, Michelle Minitti, Marisa C. Palucis, Melissa Rice, Scott K. Rowland, Juergen Schieber, Kathryn M. Stack, Dawn Y. Sumner, Roger C. Wiens, Rebecca M.E. Williams, Amy J. Williams
Geologic overview of the Mars Science Laboratory rover mission at the Kimberley, Gale crater, Mars Geologic overview of the Mars Science Laboratory rover mission at the Kimberley, Gale crater, Mars
The Mars Science Laboratory (MSL) Curiosity rover completed a detailed investigation at the Kimberley waypoint within Gale crater from sols 571-634 using its full science instrument payload. From orbital images examined early in the Curiosity mission, the Kimberley region had been identified as a high-priority science target based on its clear stratigraphic relationships in a layered...
Authors
Melissa Rice, Sanjeev Gupta, Allan H. Treiman, Kathryn M. Stack, Fred J. Calef, Lauren A. Edgar, John P. Grotzinger, Nina L. Lanza, Laetitia Le Deit, Jeremie Lasue, Kirsten L. Siebach, Ashwin R. Vasavada, Roger C. Wiens, Josh Williams
Science and Products
Filter Total Items: 41
Extraformational sediment recycling on Mars Extraformational sediment recycling on Mars
Extraformational sediment recycling (old sedimentary rock to new sedimentary rock) is a fundamental aspect of Earth’s geological record; tectonism exposes sedimentary rock, whereupon it is weathered and eroded to form new sediment that later becomes lithified. On Mars, tectonism has been minor, but two decades of orbiter instrument–based studies show that some sedimentary rocks...
Authors
Kenneth S. Edgett, Steven Banham, Kristen A. Bennett, Lauren A. Edgar, Christopher S. Edwards, Alberto Fairen, Christopher M. Fedo, Deirdra M. Fey, James B. Garvin, John P. Grotzinger, Sanjeev Gupta, Marie Henderson, Christopher H House, Nicolas Mangold, Scott McLennan, Horton E. Newsom, Scott Rowland, Kirsten L. Siebach, Lucy Thompson, Scott VanBommel, Roger C. Wiens, Rebecca Williams, Aileen Yingst
Ancient Martian aeolian sand dune deposits recorded in the stratigraphy of Valles Marineris and implications for past climates Ancient Martian aeolian sand dune deposits recorded in the stratigraphy of Valles Marineris and implications for past climates
Aeolian sediment transport, deposition, and erosion have been ongoing throughout Mars's history. This record of widespread aeolian processes is preserved in landforms and geologic units that retain important clues about past environmental conditions including wind patterns. In this study we describe landforms within Melas Chasma, Valles Marineris, that occur in distinct groups with...
Authors
Matthew Chojnacki, Lori K. Fenton, Aaron R Weintraub, Lauren A. Edgar, Mohini Jeetendra Jodhpurkar, Christopher S. Edwards
Evidence for a diagenetic origin of Vera Rubin Ridge, Gale Crater, Mars: Summary and synthesis of Curiosity's exploration campaign Evidence for a diagenetic origin of Vera Rubin Ridge, Gale Crater, Mars: Summary and synthesis of Curiosity's exploration campaign
This paper provides an overview of the Curiosity rover's exploration at Vera Rubin ridge (VRR) and summarizes the science results. VRR is a distinct geomorphic feature on lower Aeolis Mons (informally known as Mount Sharp) that was identified in orbital data based on its distinct texture, topographic expression, and association with a hematite spectral signature. Curiosity conducted...
Authors
Abigail A. Fraeman, Lauren A. Edgar, Elizabeth B. Rampe, Lucy M. Thompson, Jens Frydenvang, Christopher M. Fedo, Jeff G. Catalano, William E. Dietrich, Travis S. J. Gabriel, John P. Grotzinger, Jonas L’Haridon, Nicholas Mangold, Vivian Z. Sun, Christopher H House, Alexander Bryk, Craig Hardgrove, Sean Czarnecki, Kathryn M. Stack, Richard V. Morris, Ray E. Arvidson, Steve G. Banham, Kristen A. Bennett, Jon C. Bridges, Christopher S. Edwards, Woodward W. Fischer, Valerie K. Fox, Sanjeev Gupta, Briony H. N. Horgan, Sammantha R. Jacob, Jeffrey R. Johnson, Sarah S. Johnson, David R. Rubin, Mark R Salvatore, Susanne P. Schwenzer, Kirsten L. Siebach, Nathan T. Stein, Stuart Turner, Danika F. Wellington, Roger C. Wiens, Amy J. Williams, G.A. Davidson, Gregory M. Wong
The chemostratigraphy of the Murray formation and role of diagenesis at Vera Rubin ridge in Gale crater, Mars, as observed by the ChemCam instrument The chemostratigraphy of the Murray formation and role of diagenesis at Vera Rubin ridge in Gale crater, Mars, as observed by the ChemCam instrument
Geochemical results are presented from Curiosity’s exploration of the Vera Rubin ridge (VRR), in addition to the full chemostratigraphy of the predominantly lacustrine mudstone Murray formation up to and including VRR. VRR is a prominent ridge flanking Aeolis Mons (informally Mt. Sharp), the central mound in Gale crater, Mars, and was a key area of interest for the Mars Science...
Authors
Jens Frydenvang, Nicholas Mangold, Roger C. Wiens, Abigail A. Fraeman, Lauren A. Edgar, Christopher M. Fedo, Jonas L’Haridon, Candice C. Bedford, Sanjeev Gupta, John P. Grotzinger, Jon C. Bridges, Ben C. Clark, Elizabeth B. Rampe, Olivier Gasnaut, Sylvestre Maurice, Patrick J. Gasda, Nina L. Lanza, Ann M. Olilla, Pierre-Yves Meslin, Valerie Payre, Fred J. Calef, Mark R Salvatore, Christopher H House
A lacustrine paleoenvironment recorded at Vera Rubin ridge, Gale crater: Overview of the sedimentology and stratigraphy observed by the Mars Science Laboratory Curiosity rover A lacustrine paleoenvironment recorded at Vera Rubin ridge, Gale crater: Overview of the sedimentology and stratigraphy observed by the Mars Science Laboratory Curiosity rover
For ~500 Martian solar days (sols), the Mars Science Laboratory team explored Vera Rubin ridge (VRR), a topographic feature on the northwest slope of Aeolis Mons. Here we review the sedimentary facies and stratigraphy observed during sols 1,800–2,300, covering more than 100 m of stratigraphic thickness. Curiosity's traverse includes two transects across the ridge, which enables...
Authors
Lauren A. Edgar, Christopher M. Fedo, Sanjeev Gupta, Steve G. Banham, Abigail A. Fraeman, John P. Grotzinger, Kathryn M. Stack, Nathan T. Stein, Kristen A. Bennett, Frances Rivera-Hernandez, Vivian Z. Sun, Kenneth S. Edgett, David M. Rubin, Christopher H House, Jason K. Van Beek
Applied lunar science on Artemis III in support of in situ resource utilization Applied lunar science on Artemis III in support of in situ resource utilization
The Artemis Science Goals and Strategy are focused on basic or fundamental science, neglecting the vital field of “applied” geoscience that fits between “pure” science and engineering to provide near-term practical benefits for human activities.
Authors
Laszlo P. Keszthelyi, Kristen A. Bennett, Lisa R. Gaddis, Lillian R. Ostrach, Lauren A. Edgar
Evidence for plunging river plume deposits in the Pahrump Hills member of the Murray formation, Gale crater, Mars Evidence for plunging river plume deposits in the Pahrump Hills member of the Murray formation, Gale crater, Mars
Recent robotic missions to Mars have offered new insights into the extent, diversity and habitability of the Martian sedimentary rock record. Since the Curiosity rover landed in Gale crater in August 2012, the Mars Science Laboratory Science Team has explored the origins and habitability of ancient fluvial, deltaic, lacustrine and aeolian deposits preserved within the crater. This study...
Authors
Kathryn M. Stack, John P. Grotzinger, Michael P. Lamb, Sanjeev Gupta, David M. Rubin, Linda C. Kah, Lauren A. Edgar, Deirdra M. Fey, Joel A. Hurowitz, Marie J. McBride, Frances Rivera-Hernandez, Dawn Y. Sumner, Jason K. Van Beek, Rebecca M. E. Williams, R. Aileen Yingst
Overview of spirit microscopic imager results Overview of spirit microscopic imager results
This paper provides an overview of Mars Exploration Rover Spirit Microscopic Imager (MI) operations and the calibration, processing, and analysis of MI data. The focus of this overview is on the last five Earth years (2005–2010) of Spirit's mission in Gusev crater, supplementing the previous overview of the first 450 sols of the Spirit MI investigation. Updates to radiometric calibration...
Authors
Kenneth E. Herkenhoff, Steve W Squyres, Raymond E. Arvidson, Shoshanna B Cole, Rob Sullivan, Aileen Yingst, Nathalie Cabrol, Ella Lee, Janet Richie, Robert M. Sucharski, Fred J. Calef, James F. Bell, Mary Chapman, Paul Geissler, Lauren A. Edgar, Brenda Franklin, Joel A. Hurowitz, Elsa Jensen, Jeffrey R. Johnson, Randolph L. Kirk, Peter Lanagan, Kevin Mullins, Craig Leff, Justin Maki, Bonnie L. Redding, Melissa Rice, Michael H. Sims, Annette Sunda, Nicole Spanovich, Richard Springer, Laurence A. Soderblom, Alicia Vaughan
Complex bedding geometry in the upper portion of Aeolis Mons, Gale crater, Mars Complex bedding geometry in the upper portion of Aeolis Mons, Gale crater, Mars
The Upper formation of Aeolis Mons in Gale crater exhibits curvilinear bedding patterns on the surfaces of several erosional benches that have been interpreted as cross-bedding. We use High Resolution Imaging Science Experiment (HiRISE) stereo topography to test this hypothesis by measuring the bedding geometry within these benches. The bedding geometry is consistent with aeolian cross...
Authors
Ryan B. Anderson, Lauren A. Edgar, David M. Rubin, Kevin W. Lewis, Claire Newman
Ancient Martian aeolian processes and palaeomorphology reconstructed from the Stimson formation on the lower slope of Aeolis Mons, Gale crater, Mars Ancient Martian aeolian processes and palaeomorphology reconstructed from the Stimson formation on the lower slope of Aeolis Mons, Gale crater, Mars
Reconstruction of the palaeoenvironmental context of Martian sedimentary rocks is central to studies of ancient Martian habitability and regional palaeoclimate history. This paper reports the analysis of a distinct aeolian deposit preserved in Gale crater, Mars, and evaluates its palaeomorphology, the processes responsible for its deposition, and its implications for Gale crater...
Authors
Steve G. Banham, Sanjeev Gupta, David M. Rubin, Jessica A. Watkins, Dawn Y. Sumner, Kenneth S. Edgett, John P. Grotzinger, Kevin W. Lewis, Lauren A. Edgar, Kathryn M. Stack, Robert Barnes, James F. Bell, Mackenzie D. Day, Ryan C. Ewing, Mathieu G.A. Lapotre, Nathan T. Stein, Frances Rivera-Hernandez, Ashwin R. Vasavada
Shaler: in situ analysis of a fluvial sedimentary deposit on Mars Shaler: in situ analysis of a fluvial sedimentary deposit on Mars
This paper characterizes the detailed sedimentology of a fluvial sandbody on Mars for the first time and interprets its depositional processes and palaeoenvironmental setting. Despite numerous orbital observations of fluvial landforms on the surface of Mars, ground-based characterization of the sedimentology of such fluvial deposits has not previously been possible. Results from the NASA...
Authors
Lauren A. Edgar, Sanjeev Gupta, David M. Rubin, Kevin W. Lewis, Gary A. Kocurek, Ryan B. Anderson, James F. Bell, Gilles Dromart, Kenneth S. Edgett, John P. Grotzinger, Craig Hardgrove, Linda C. Kah, Richard A. LeVeille, Michael C. Malin, Nicholas Mangold, Ralph E. Milliken, Michelle Minitti, Marisa C. Palucis, Melissa Rice, Scott K. Rowland, Juergen Schieber, Kathryn M. Stack, Dawn Y. Sumner, Roger C. Wiens, Rebecca M.E. Williams, Amy J. Williams
Geologic overview of the Mars Science Laboratory rover mission at the Kimberley, Gale crater, Mars Geologic overview of the Mars Science Laboratory rover mission at the Kimberley, Gale crater, Mars
The Mars Science Laboratory (MSL) Curiosity rover completed a detailed investigation at the Kimberley waypoint within Gale crater from sols 571-634 using its full science instrument payload. From orbital images examined early in the Curiosity mission, the Kimberley region had been identified as a high-priority science target based on its clear stratigraphic relationships in a layered...
Authors
Melissa Rice, Sanjeev Gupta, Allan H. Treiman, Kathryn M. Stack, Fred J. Calef, Lauren A. Edgar, John P. Grotzinger, Nina L. Lanza, Laetitia Le Deit, Jeremie Lasue, Kirsten L. Siebach, Ashwin R. Vasavada, Roger C. Wiens, Josh Williams