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Spatial distribution and morphometric measurements of circum-Caloris knobs on Mercury: Application of novel shadow measurements

Wright, J.; Rothery, D. A.; Balme, M. R. and Conway, S. J. (2018). Spatial distribution and morphometric measurements of circum-Caloris knobs on Mercury: Application of novel shadow measurements. In: 49th Lunar and Planetary Science Conference, 19-23 Mar 2018, The Woodlands, Houston, Texas, USA.

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Abstract

The Caloris basin (1550 km diameter) is the largest, well-preserved impact feature on Mercury. Its impact ejecta, excavated from the lower crust and uppermost mantle, provides an opportunity to investigate the interior materials of the planet. Based on Mariner 10 data, which cover only the eastern third of the basin, ‘hummocky plains’, associated with Caloris, consisting of ‘low, closely spaced to scattered hills 0.3-1 km across’ were interpreted as Caloris impact ejecta. These plains were subsequently named the Odin Formation, and the knobs associated with them were interpreted as degraded ejecta blocks. To test for an impact ejecta origin for the circum-Caloris knobs, we have mapped their locations and made morphometric measurements and high-resolution observations.

Item Type: Conference or Workshop Item
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Physical Sciences
Faculty of Science, Technology, Engineering and Mathematics (STEM)
Item ID: 53891
Depositing User: Jack Wright
Date Deposited: 21 Mar 2018 17:22
Last Modified: 27 Jun 2019 19:54
URI: http://oro.open.ac.uk/id/eprint/53891
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