High-Temperature Oxidation of Magnesium- and Iron-Rich Olivine under a CO2 Atmosphere: Implications for Venus
文献类型：期刊论文
| 作者 | Zhong, Shan-Shan5,6; Zhao, Yu-Yan Sara1,4; Lin, Honglei3; Chang, Rui3; Qi, Chao3; Wang, Junhu2; Mo, Bing1,6; Wen, Yuanyun1,6; Yu, Wen1,6; Zhou, Di-Sheng5,6 |
| 刊名 | REMOTE SENSING
 |
| 出版日期 | 2023-04-01 |
| 卷号 | 15期号:8页码:30 |
| 关键词 | olivine oxidation rates Venus anomalous emissivity atmosphere surface interactions |
| DOI | 10.3390/rs15081959 |
| 英文摘要 | Understanding crust-atmosphere interactions on Venus is fundamentally important to interpretations of Venus' surface spectroscopic data. Olivine, in basaltic crust, is oxidized under a heated CO2 atmosphere. However, the oxidation rates, product assemblages and spectral characteristics of olivine samples with different Fa# values remain largely unclear. Herein, we investigated the oxidation of olivine with different Fa# values (Fa(09), Fa(29) and Fa(71)) under CO2 atmosphere at 470 degrees C and 900 degrees C and characterized the oxidation products (both microscopically and macroscopically), conversion rates and VNIR spectra. The results showed that the oxidation of olivine produced magnesioferrite, magnetite, laihunite, hematite and maghemite at 470 degrees C and hematite, magnetite, magnesioferrite and amorphous SiO2 at 900 degrees C. Both high temperature and high Fa# values accelerated the oxidation rates. The production of oxide coatings on olivine grains (74 mu m in size) was estimated to be completed within tens to hundreds of years at 470 degrees C in natural settings, with even shorter periods under higher temperatures. Thus, CO2 oxidation would quickly eliminate olivine spectral characteristics, and spectral parameters at 850 and 1020 nm, as well as other relevant spectral windows (considering shifts induced by the elevated temperature), could be used to trace olivine oxidation processes. This work presented a case study connecting microscopic features to spectral characteristics for Venus' surface-atmosphere interactions. Further studies considering more realistic Venus' surface-atmosphere conditions will be essential to better interpret the measured spectroscopic data and determine the origins of the high emissivity detected on elevated terrain on Venus. |
| WOS关键词 | MOSSBAUER-SPECTROSCOPY ; MINERAL-COMPOSITION ; SURFACE ; EMISSIVITY ; ROCKS ; VENERA-14 ; REFLECTANCE ; EXPLORATION ; LAIHUNITE ; HEMATITE |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology |
| 语种 | 英语 |
| 出版者 | MDPI |
| WOS记录号 | WOS:000977081500001 |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/110895]  |
| 专题 | 地质与地球物理研究所_中国科学院地球与行星物理重点实验室 |
| 通讯作者 | Zhao, Yu-Yan Sara |
| 作者单位 | 1.CAS Ctr Excellence Comparat Planetol, Hefei 230026, Peoples R China 2.Chinese Acad Sci, Dalian Inst Chem Phys, Ctr Adv Mossbauer Spect, Mossbauer Effect Data Ctr, Dalian 116023, Peoples R China 3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing 100049, Peoples R China 4.Chengdu Univ Technol, Coll Earth Sci, Res Ctr Planetary Sci, Chengdu 610059, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 6.Chinese Acad Sci, Inst Geochem, Ctr Lunar & Planetary Sci, Guiyang 550081, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhong, Shan-Shan,Zhao, Yu-Yan Sara,Lin, Honglei,et al. High-Temperature Oxidation of Magnesium- and Iron-Rich Olivine under a CO2 Atmosphere: Implications for Venus[J]. REMOTE SENSING,2023,15(8):30. |
| APA | Zhong, Shan-Shan.,Zhao, Yu-Yan Sara.,Lin, Honglei.,Chang, Rui.,Qi, Chao.,...&Liu, Jianzhong.(2023).High-Temperature Oxidation of Magnesium- and Iron-Rich Olivine under a CO2 Atmosphere: Implications for Venus.REMOTE SENSING,15(8),30. |
| MLA | Zhong, Shan-Shan,et al."High-Temperature Oxidation of Magnesium- and Iron-Rich Olivine under a CO2 Atmosphere: Implications for Venus".REMOTE SENSING 15.8(2023):30. |
入库方式： OAI收割
来源：地质与地球物理研究所
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