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  1. OA@INAF
  2. PRODOTTI RICERCA INAF
  3. 1 CONTRIBUTI IN RIVISTE (Journal articles)
  4. 1.01 Articoli in rivista
Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12386/26035
Title: Probing the Hidden Geology of Isidis Planitia (Mars) with Impact Craters
Authors: Caprarelli, Graziella
OROSEI, ROBERTO 
Issue Date: 2015
Journal: GEOSCIENCES 
Number: 5
Issue: 1
First Page: 30
Abstract: In this study we investigated Isidis Planitia, a 1325 km diameter multi-ring impact basin intersecting the Martian hemispheric dichotomy, located in the eastern hemisphere, between Syrtis Major and Utopia Planitia. From Mars Orbiter Laser Altimeter gridded data we observed that in the center of Isidis the −3700 m and −3800 m isolines strike NW-SE, being quasi-parallel to the diameter of the basin. We interpreted this as evidence that the basement of Isidis Planitia was faulted prior to being completely covered by layers of sediments and volcanic rocks. Plotting the morphometric data of impact craters located on the floor of the basin in a measured depths vs. predicted depths diagram (MPD), we concluded that the fault planes should dip SW, which is consistent with the location of the most topographically depressed sector of Isidis Planitia. We also estimated a minimum vertical displacement of ~1–2 km. Considering that the crust under Isidis Planitia is only a few km thick, our estimate implies brittle behavior of the lithosphere under the basin, suggesting that a low geothermal gradient and rheologically strong material characterize this Martian location.
URI: http://hdl.handle.net/20.500.12386/26035
URL: https://www.mdpi.com/2076-3263/5/1/30
ISSN: 2076-3263
DOI: 10.3390/geosciences5010030
Bibcode ADS: 2015Geosc...5...30C
Fulltext: open
Appears in Collections:1.01 Articoli in rivista

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