This dataset comprises the unit map derived from 3D analysis of Sakarya Vallis in Gale crater, Mars. The units are named Package 1–7. These packages have been extrapolated from morpho-stratigraphic analysis of a HiRISE scene in PRo3D. They have been further extrapolated using underlying image data. Included here is a shapefile representing the marker bed (Milliken et al. 2010) in Gale crater. The "CDD" refers to the Central Debris Deposit, identified by Hughes (2021).

The structural data represents dip measurements along the boundaries of these packages within the feature; the "sub-package" data represent layering within the packages. For more on how dip is calculated in PRo3D, see https://pro3d.space/.

Finally, the profiles mark the locations where topographic profiles were extracted for constructing cross-sections, as discussed in the thesis Persaud (2022).

These data are intended to be displayed with the HiRISE ORI (https://doi.org/10.5281/zenodo.5808371) and CTX ORI mosaic (https://doi.org/10.5281/zenodo.5808357) over Sakarya Vallis, and over the basemap over the northwest of Aeolis Mons (https://doi.org/10.5281/zenodo.5808381).

Format: SHP, SHX, DBF, PRJ, QPJ
Projection: Equidistant cylindrical
Datum: Spheroid (r = 3396.190 km)

N.B. the PROJ4 format of the project is "+proj=eqc +lat_ts=0 +lat_0=0 +lon_0=0 +x_0=0 +y_0=0 +a=3396190 +b=3396190 +units=m +no_defs"

Part of this work was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under contract to NASA. Government sponsorship acknowledged.

References:

Barnes, R., S. Gupta, C. Traxler, T. Ortner, A. Bauer, G. Hesina, G. Paar, et al. 2018. “Geological Analysis of Martian Rover-Derived Digital Outcrop Models Using the 3-D Visualization Tool, Planetary Robotics 3-D Viewer—PRo3D.” Earth and Space Science 5: 1–23. https://doi.org/10.1002/2018EA000374.

Fraeman, A. A., B. L. Ehlmann, R. E. Arvidson, C. S. Edwards, J. P. Grotzinger, R. E. Milliken, D. P. Quinn, and M. S. Rice. 2016. “The Stratigraphy and Evolution of Lower Mount Sharp from Spectral, Morphological, and Thermophysical Orbital Data Sets.” Journal of Geophysical Research E: Planets 121 (9): 1713–36. https://doi.org/10.1002/2016JE005095.Received.

Hughes, M. N. 2021. “Landscape Evolution at Endeavour and Gale Craters on Mars, and How Terrain Characteristics Correlate with Mineralogy on Lower Mount Sharp, Gale Crater.” https://doi.org/10.7936/c6se-5895.

Milliken, R. E., J. P. Grotzinger, and B. J. Thomson. 2010. “Paleoclimate of Mars as Captured by the Stratigraphic Record in Gale Crater.” Geophysical Research Letters 37 (4): 1–6. https://doi.org/10.1029/2009GL041870.

Persaud, D. M. (2021). Co-registered U. Arizona HiRISE DTM and ORI over Sakarya Vallis, Gale Crater, Mars [Data set]. Zenodo. https://doi.org/10.5281/zenodo.5808371

Persaud, D. M. (2021). Multi-Resolution Basemap of Northwest Aeolis Mons, Gale Crater, Mars [Data set]. Zenodo. https://doi.org/10.5281/zenodo.5808381

Thomson, B. J., N. T. Bridges, R. E. Milliken, A. M. Baldridge, S. J. Hook, J. K. Crowley, G. M. Marion, C. R. de Souza Filho, A. J. Brown, and C. M. Weitz. 2011. “Constraints on the Origin and Evolution of the Layered Mound in Gale Crater, Mars Using Mars Reconnaissance Orbiter Data.” Icarus 214 (2): 413–32. https://doi.org/10.1016/j.icarus.2011.05.002.