| 60552 |
Creator |
d12d77a47f5acf3018a589f6758b14d3 |
| 60552 |
Creator |
ext-0d657486073d522ac2d1ef0f64fcfdca |
| 60552 |
Creator |
ext-62d68414a93ef484c09194150d3b8d9c |
| 60552 |
Creator |
ext-34a0dba2427a816087ea41496ecb27aa |
| 60552 |
Creator |
ext-c344a86727d8cb5f9417c25c2dc87853 |
| 60552 |
Creator |
ext-8b96a357f490aaf18ccfb96b97bf13fa |
| 60552 |
Date |
2019 |
| 60552 |
Date |
2019-07-12 |
| 60552 |
Is Part Of |
repository |
| 60552 |
Is Part Of |
p21699100 |
| 60552 |
abstract |
The presence of snow and ice at mid‐latitudes of Mars cannot be explained by current
climatic conditions, as surface ice is unstable. However, a large variety of debris‐covered
glaciers have been observed at both mid‐latitudes. Here, we report the presence of
local, small‐scale, and debris‐covered stagnant ice deposits on the floor of a valley
system in Terra Cimmeria. These deposits, termed valley fill deposits (VFD), have
a distribution that is restricted to the host valley floor and to the extent of the
ejecta blanket associated with Tarq impact crater. The VFD are characterized by convex‐upward
morphology, various crevasses, sublimation pits, an average area of a few km<sup>2</sup>,
and occasional ejecta streaks on their surface. Our model age estimation points to
two possible time frames for the Tarq impact event, thus, we suggest two formation
scenarios for VFD: I) distribution of ice due to impact into shallow ice during the
Middle Amazonian. II) Post‐impact deposition of VFD due to precipitation. In both
scenarios, ice preservation is most likely due to a lag of dust and debris deposited
in the valley's topographic lows. Scenario I is more consistent with our geomorphological
observation of the VFD being overlain by ejecta streaks. Our results highlight the
importance of local geological events and conditions in the distribution and preservation
of buried ice deposits on Mars, and suggest that more small‐scale and debris‐covered
ice deposits may exist in the mid‐latitudes than previously thought. These deposits
are of high importance for future human exploration missions to Mars. |
| 60552 |
authorList |
authors |
| 60552 |
issue |
6 |
| 60552 |
status |
published |
| 60552 |
status |
peerReviewed |
| 60552 |
uri |
http://data.open.ac.uk/oro/document/846572 |
| 60552 |
uri |
http://data.open.ac.uk/oro/document/846581 |
| 60552 |
uri |
http://data.open.ac.uk/oro/document/846582 |
| 60552 |
uri |
http://data.open.ac.uk/oro/document/846583 |
| 60552 |
uri |
http://data.open.ac.uk/oro/document/846584 |
| 60552 |
uri |
http://data.open.ac.uk/oro/document/846585 |
| 60552 |
uri |
http://data.open.ac.uk/oro/document/846586 |
| 60552 |
uri |
http://data.open.ac.uk/oro/document/889417 |
| 60552 |
uri |
http://data.open.ac.uk/oro/document/889426 |
| 60552 |
uri |
http://data.open.ac.uk/oro/document/889427 |
| 60552 |
uri |
http://data.open.ac.uk/oro/document/889428 |
| 60552 |
uri |
http://data.open.ac.uk/oro/document/889429 |
| 60552 |
uri |
http://data.open.ac.uk/oro/document/889430 |
| 60552 |
uri |
http://data.open.ac.uk/oro/document/890900 |
| 60552 |
volume |
124 |
| 60552 |
type |
AcademicArticle |
| 60552 |
type |
Article |
| 60552 |
label |
Adeli, Solmaz; Hauber, Ernst; Michael, Gregory G.; Fawdon, Peter ; Smith, Isaac B.
and Jaumann, Ralf (2019). Geomorphological evidence of localized stagnant ice deposits
in Terra Cimmeria, Mars. Journal of Geophysical Research: Planets, 124(6) pp. 1525–1541. |
| 60552 |
label |
Adeli, Solmaz; Hauber, Ernst; Michael, Gregory G.; Fawdon, Peter ; Smith, Isaac
B. and Jaumann, Ralf (2019). Geomorphological evidence of localized stagnant ice
deposits in Terra Cimmeria, Mars. Journal of Geophysical Research: Planets, 124(6)
pp. 1525–1541. |
| 60552 |
label |
Adeli, Solmaz; Hauber, Ernst; Michael, Gregory G.; Fawdon, Peter ; Smith, Isaac
B. and Jaumann, Ralf (2019). Geomorphological evidence of localized stagnant ice
deposits in Terra Cimmeria, Mars. Journal of Geophysical Research: Planets (Early
Access). |
| 60552 |
Publisher |
ext-851596484eb35d1cc26a8e8e11e207e8 |
| 60552 |
Title |
Geomorphological evidence of localized stagnant ice deposits in Terra Cimmeria, Mars |
| 60552 |
in dataset |
oro |