| タイトル | The Geology of Pluto and Charon Through the Eyes of New Horizons |
| 本文（外部サイト） | http://hdl.handle.net/2060/20170000011 |
| 著者（英） | Reuter, D. C.; Beyer, R. A.; Moore, J. M.; Nimmo, F.; Singer, K. N.; White, O. L.; McKinnon, W. B.; Umurhan, O. M.; Howard, A. D.; Schenk, P. M.; Ennico, K.; Cruikshank, D. P.; Spencer, J. R. |
| 著者所属（英） | NASA Ames Research Center |
| 発行日 | 2016-01-01 |
| 言語 | eng |
| 内容記述 | NASA's New Horizons spacecraft has revealed the complex geology of Pluto and Charon. Pluto shows ongoing surface geological activity centered on a vast basin containing a thick layer of volatile ices that is involved in convection and advection, with a crater retention age no greater than 10 Ma. Surrounding terrains show active glacial flow, apparent transport and rotation of large buoyant water-ice crustal blocks, and pitting by sublimation erosion and/or collapse. More enigmatic features include tall mounds with central depressions that are conceivably cryovolcanic, and ridges with complex bladed textures. Pluto also has ancient cratered terrains up to 4 Ga old that are extensionally fractured and extensively mantled and eroded by glacial or other processes. Charon is not currently active, but experienced major extensional tectonism and resurfacing (probably cryovolcanic) nearly 4 billion years ago. Impact crater populations on Pluto and Charon are not consistent with the steepest proposed impactor size-frequency distributions. |
| NASA分類 | Lunar and Planetary Science and Exploration |
| レポートNO | ARC-E-DAA-TN29593 |
| 権利 | Copyright, Distribution as joint owner in the copyright |
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