Published July 2013
| public
Journal Article
Pacing early Mars river activity: Embedded craters in the Aeolis Dorsa region imply river activity spanned ≳(1–20) Myr
Abstract
We find net sedimentation rate ≲(13–200) μm/yr in the Aeolis Dorsa region, Mars, using the frequency of crater–river interactions. This sets a lower bound of 1–20 Myr on the total interval spanned by fluvial activity, which we correlate to the Noachian–Hesperian transition. The main uncertainty is the impact flux at the time of deposition. This result rules out basin-filling by a single catastrophic episode, such as a single impact-induced water–vapor greenhouse.
Additional Information
© 2013 Elsevier Inc. Received 27 July 2012; Revised 27 March 2013; Accepted 28 March 2013; Available online 10 April 2013. We thank Mike Lamb, Ken Farley, the participants in Caltech's Mars Fluvial Geomorphology Reading Group, Devon Burr, Alexandra Lefort, Robert Jacobsen, WesWatters, and especially Oded Aharonson, Mark Allen, Woody Fischer, Kevin Lewis, and Nick Warner, for discussions. We additionally thank Kevin Lewis and Oded Aharonson for sharing their preprint on cyclic bedding. We thank two anonymous reviewers for their comments, and Jeff Moersch for editorial handling. We thank the HiRISE team for maintaining a responsive public target request program, HiWish, which was useful for this work. DTMs produced for this work, ESP_17548_1740/ ESP_019104_1740 (@1 m/pixel) and PSP_007474_1745/ ESP_024497_1745 (@2.5 m/pixel) are available for unrestricted further use from the corresponding author.Additional details
- Eprint ID
- 39862
- DOI
- 10.1016/j.icarus.2013.03.029
- Resolver ID
- CaltechAUTHORS:20130812-092139435
- Created
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2013-08-12Created from EPrint's datestamp field
- Updated
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2021-11-09Created from EPrint's last_modified field