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- Title
GEOLOGIC MAPPING AND STRATIGRAPHIC ANALYSES IN SOUTH-WESTERN MELAS CHASMA, MARS: YEAR 2 PROGRESS.
- Authors
Edgar, L. A.; Bennett, K. A.; Fortezzo, C. M.; Jodhpurkar, M.; Skinner Jr., J. A.
- Abstract
This study will characterize basin-forming processes and sediment provenance within southwestern Melas Chasma, and place the Melas basin into a broader geologic, structural, and stratigraphic context within the Valles Marineris canyon system. Although the Valles Marineris system has been studied with a variety of datasets over the past several decades, modern datasets afford a renewed look into these deposits and how they fit together in space and time. This work investigates the character of plateau, wall, and floor units and their relative contributions to the Melas basin, and places localized observations into a broader context for comparison to other similar regions within the Valles Marineris system. Efforts are underway to produce a regional geologic map at a scale of 1:150,000, as well as 9 local geologic maps at a scale of 1:15,000. Linework for the regional map is complete and a first draft of a geologic map has been prepared and is in revision (Figure 1). The regional mapping is on track to submit the map package for a USGS Scientific Investigation Map (SIM) by the end of this fiscal year. Mapping is underway at all 9 reference sections to capture the diversity of geologic features across the Melas basin. Preliminary results suggest that similar geologic units can be found throughout the Melas basin, northwestern sub-basin, and parts of Melas Chasma, which suggests similar emplacement processes for some of the oldest geologic units.
- Subjects
GEOLOGICAL maps; GEOLOGICAL mapping; FISCAL year; CANYONS
- Publication
LPI Contribution, 2021, p1
- ISSN
0161-5297
- Publication type
Article