D
D. J. Des Marais
Researcher at Ames Research Center
Publications - 4
Citations - 553
D. J. Des Marais is an academic researcher from Ames Research Center. The author has contributed to research in topics: Mars Exploration Program & Meteorite. The author has an hindex of 4, co-authored 4 publications receiving 418 citations.
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Organic molecules in the Sheepbed Mudstone, Gale Crater, Mars
Caroline Freissinet,Caroline Freissinet,Daniel P. Glavin,Paul R. Mahaffy,Kristen E. Miller,Jennifer L. Eigenbrode,Roger E. Summons,A. E. Brunner,A. E. Brunner,Arnaud Buch,Cyril Szopa,P. D. Archer,H. B. Franz,H. B. Franz,Sushil K. Atreya,William B. Brinckerhoff,Michel Cabane,Patrice Coll,Pamela G. Conrad,D. J. Des Marais,Jason P. Dworkin,Alberto G. Fairén,Alberto G. Fairén,Pascaline Francois,John P. Grotzinger,S. Kashyap,S. Kashyap,I. L. ten Kate,Laurie A. Leshin,C. A. Malespin,C. A. Malespin,M. G. Martin,M. G. Martin,F. J. Martin-Torres,F. J. Martin-Torres,Amy McAdam,Douglas W. Ming,Rafael Navarro-González,Alexander A. Pavlov,B. D. Prats,Steven W. Squyres,Andrew Steele,Jennifer C. Stern,Dawn Y. Sumner,Brad Sutter,María Paz Zorzano +45 more
TL;DR: Chlorinated hydrocarbons identified in the Sheepbed mudstone by SAM are the reaction products of Martian chlorine and organic carbon derived from Martian sources or exogenous sources such as meteorites, comets, or interplanetary dust particles.
Journal ArticleDOI
Large wind ripples on Mars: A record of atmospheric evolution
Mathieu G.A. Lapotre,Ryan C. Ewing,Michael P. Lamb,Woodward W. Fischer,John P. Grotzinger,David M. Rubin,Kevin W. Lewis,M. J. Ballard,Mitch D. Day,Sanjeev Gupta,Steven G. Banham,Nathan T. Bridges,D. J. Des Marais,Abigail A. Fraeman,John A. Grant,Kenneth E. Herkenhoff,Douglas W. Ming,Michael A. Mischna,Melissa S. Rice,Dawn Y. Sumner,Ashwin R. Vasavada,R. A. Yingst +21 more
TL;DR: A reevaluation of the wind-deposited strata in the Burns formation identifies potential wind-drag ripple stratification formed under a thin atmosphere on Mars, and reveals a third stable wind-driven bedform, with meter-scale wavelengths.
Organic molecules in the Sheepbed Mudstone, Gale Crater, Mars
Caroline Freissinet,Caroline Freissinet,Daniel P. Glavin,Paul R. Mahaffy,Kristen E. Miller,Jennifer L. Eigenbrode,Roger E. Summons,A. E. Brunner,A. E. Brunner,Arnaud Buch,Cyril Szopa,P. D. Archer,H. B. Franz,H. B. Franz,Sushil K. Atreya,William B. Brinckerhoff,Michel Cabane,Patrice Coll,Pamela G. Conrad,D. J. Des Marais,Jason P. Dworkin,Alberto G. Fairén,Alberto G. Fairén,Pascaline Francois,John P. Grotzinger,S. Kashyap,S. Kashyap,I. L. ten Kate,Laurie A. Leshin,C. A. Malespin,C. A. Malespin,M. G. Martin,M. G. Martin,F. J. Martin-Torres,F. J. Martin-Torres,Amy McAdam,Douglas W. Ming,Rafael Navarro-González,Alexander A. Pavlov,B. D. Prats,Steven W. Squyres,Andrew Steele,Jennifer C. Stern,Dawn Y. Sumner,Brad Sutter,María Paz Zorzano +45 more
TL;DR: The SAM gas chromatograph mass spectrometer (GCMS) was used to detect chlorobenzene and dichloroalkanes in the direct evolved gas analysis (EGA) mode in multiple portions of the fines from the Cumberland drill hole in the Sheepbed mudstone at Yellowknife Bay as mentioned in this paper.
Surveying Clay Mineral Diversity in the Murray Formation, Gale Crater, Mars
Thomas F. Bristow,David F. Blake,David T. Vaniman,Steve J. Chipera,E. B. Rampe,John P. Grotzinger,Amy McAdam,D. W. Ming,Shaunna M. Morrison,Albert S. Yen,R. V. Morris,Robert T. Downs,Allan H. Treiman,Cherie N. Achilles,P. I. Craig,D. J. Des Marais,J. M. Morookian,Joy A. Crisp,Robert M. Hazen +18 more
TL;DR: In this paper, the position of 2l reflections in X-ray diffraction (XRD) patterns serve as an indicator of octahedral occupancy, and the smectites are Fe-bearing, trioctahedral species analogous to ferrian saponites from terrestrial deposits.