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Date |
2013-05-31 |
| 37725 |
Is Part Of |
p10959203 |
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Is Part Of |
repository |
| 37725 |
abstract |
Observations by the Mars Science Laboratory Mast Camera (Mastcam) in Gale crater reveal
isolated outcrops of cemented pebbles (2 to 40 millimeters in diameter) and sand grains
with textures typical of fluvial sedimentary conglomerates. Rounded pebbles in the
conglomerates indicate substantial fluvial abrasion. ChemCam emission spectra at one
outcrop show a predominantly feldspathic composition, consistent with minimal aqueous
alteration of sediments. Sediment was mobilized in ancient water flows that likely
exceeded the threshold conditions (depth 0.03 to 0.9 meter, average velocity 0.20
to 0.75 meter per second) required to transport the pebbles. Climate conditions at
the time sediment was transported must have differed substantially from the cold,
hyper-arid modern environment to permit aqueous flows across several kilometers. |
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authorList |
authors |
| 37725 |
issue |
6136 |
| 37725 |
status |
peerReviewed |
| 37725 |
volume |
340 |
| 37725 |
type |
AcademicArticle |
| 37725 |
type |
Article |
| 37725 |
label |
Williams, R. M. E.; Grotzinger, J. P.; Dietrich, W. E.; Gupta, S.; Sumner, D. Y; Wiens,
R. C.; Mangold, N.; Malin, M. C.; Edgett, K. S.; Maurice, S.; Forni, O.; Gasnault,
O.; Ollila, A.; Newsom, H. E.; Dromart, G.; Palucis, M. C.; Yingst, R. A.; Anderson,
R. B.; Herkenhoff, K. E.; Le Mouelic, S.; Goetz, W.; Madsen, M. B.; Koefoed, A.; Jensen,
J. K.; Bridges, J. C.; Schwenzer, S. P. ; Lewis, K. W.; Stack, K. M.; Rubin, D.; Kah,
L. C.; Bell III, J. F.; Farmer, J. D.; Sullivan, R.; Van Beek, T.; Blaney, D. L.;
Pariser, O. and Deen, R. G. (2013). Martian Fluvial Conglomerates at Gale Crater.
Science, 340(6136) pp. 1068–1072. |
| 37725 |
label |
Williams, R. M. E.; Grotzinger, J. P.; Dietrich, W. E.; Gupta, S.; Sumner, D. Y;
Wiens, R. C.; Mangold, N.; Malin, M. C.; Edgett, K. S.; Maurice, S.; Forni, O.; Gasnault,
O.; Ollila, A.; Newsom, H. E.; Dromart, G.; Palucis, M. C.; Yingst, R. A.; Anderson,
R. B.; Herkenhoff, K. E.; Le Mouelic, S.; Goetz, W.; Madsen, M. B.; Koefoed, A.; Jensen,
J. K.; Bridges, J. C.; Schwenzer, S. P. ; Lewis, K. W.; Stack, K. M.; Rubin, D.; Kah,
L. C.; Bell III, J. F.; Farmer, J. D.; Sullivan, R.; Van Beek, T.; Blaney, D. L.;
Pariser, O. and Deen, R. G. (2013). Martian Fluvial Conglomerates at Gale Crater.
Science, 340(6136) pp. 1068–1072. |
| 37725 |
Title |
Martian Fluvial Conglomerates at Gale Crater |
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in dataset |
oro |