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DOI | 10.1029/2019GL083249 |
Shock Vaporization/Devolatilization of Evaporitic Minerals, Halite and Gypsum, in an Open System Investigated by a Two-Stage Light Gas Gun | |
Kurosawa, Kosuke1; Moriwaki, Ryota1; Komatsu, Goro1,2; Okamoto, Takaya3; Sakuma, Hiroshi4; Yabuta, Hikaru5; Matsui, Takafumi1 | |
2019-07-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2019 |
卷号 | 46期号:13页码:7258-7267 |
文章类型 | Article |
语种 | 英语 |
国家 | Japan; Italy |
英文摘要 | Dry lakebeds might constitute large volatile reservoirs on Mars. Hypervelocity impacts onto ancient dry lakebeds would have affected the volatile distribution on Mars. We developed a new experimental method to investigate the response of evaporitic minerals (halite and gypsum) to impact shocks in an open system. This technique does not result in chemical contamination from the operation of the gas gun. The technique is termed the "two-valve method," and the gun system is located in the Planetary Exploration Research Center, Chiba Institute of Technology, Japan. We detected the vaporization of halite at 31 GPa and devolatilization from gypsum at 11 GPa, suggesting that impact-induced volatile release from dry lakebeds has periodically occurred throughout Martian history. The vaporization of halite deposits might have enhanced the production of perchlorates, which are found globally on Mars. The water loss from gypsum possibly explains the coexisting types of Ca-sulfates found in Gale Crater. Plain Language Summary We used a new experimental technique to investigate the result of a meteoroid impact into an evaporitic deposit on Mars. Although two-stage light gas guns are ideal projectile launchers, the dirty gas from the gun has been a long-standing limitation of this technique that so far greatly complicated analysis of the vapors that are generated due to such impacts. Our new method overcomes this limitation and allows us to measure impact-generated vapor from evaporitic minerals. We detected NaCl vapor from halite and water vapor from gypsum at velocities lower than the typical impact velocities onto Mars. This suggests that volatile release from ancient dry lakebeds has periodically occurred throughout Martian history, due to stochastic meteoroid impacts. The nature of perchlorates and Ca-sulfates found on Mars can be interpreted as the result of hypervelocity impacts onto dry lakebeds rich in evaporitic minerals. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000476960100023 |
WOS关键词 | EQUATION-OF-STATE ; CHICXULUB IMPACT ; PERCHLORATE ; MARS ; CHEMISTRY ; CACO3 ; DEVOLATILIZATION ; COMPRESSION ; ANHYDRITE ; DYNAMICS |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/185042 |
专题 | 气候变化 |
作者单位 | 1.Chiba Inst Technol, Planetary Explorat Res Ctr, Narashino, Chiba, Japan; 2.Univ Annunzio, Int Res Sch Planetary Sci, Pescara, Italy; 3.Japan Aerosp Explorat Agcy, Inst Space & Astronaut Sci, Sagamihara, Kanagawa, Japan; 4.Natl Inst Mat Sci, Res Ctr Funct Mat, Tsukuba, Ibaraki, Japan; 5.Hiroshima Univ, Grad Sch Sci, Dept Earth & Planetary Syst Sci, Higashihiroshima, Japan |
推荐引用方式 GB/T 7714 | Kurosawa, Kosuke,Moriwaki, Ryota,Komatsu, Goro,et al. Shock Vaporization/Devolatilization of Evaporitic Minerals, Halite and Gypsum, in an Open System Investigated by a Two-Stage Light Gas Gun[J]. GEOPHYSICAL RESEARCH LETTERS,2019,46(13):7258-7267. |
APA | Kurosawa, Kosuke.,Moriwaki, Ryota.,Komatsu, Goro.,Okamoto, Takaya.,Sakuma, Hiroshi.,...&Matsui, Takafumi.(2019).Shock Vaporization/Devolatilization of Evaporitic Minerals, Halite and Gypsum, in an Open System Investigated by a Two-Stage Light Gas Gun.GEOPHYSICAL RESEARCH LETTERS,46(13),7258-7267. |
MLA | Kurosawa, Kosuke,et al."Shock Vaporization/Devolatilization of Evaporitic Minerals, Halite and Gypsum, in an Open System Investigated by a Two-Stage Light Gas Gun".GEOPHYSICAL RESEARCH LETTERS 46.13(2019):7258-7267. |
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