Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1130/G22620A.1 |
Acid-fog deposition at Kilauea volcano: A possible mechanism for the formation of siliceous-sulfate rock coatings on Mars | |
Schiffman, Peter; Zierenberg, Robert; Marks, Naomi; Bishop, Janice L.; Dyar, M. Darby | |
通讯作者 | Schiffman, Peter |
来源期刊 | GEOLOGY
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ISSN | 0091-7613 |
EISSN | 1943-2682 |
出版年 | 2006 |
卷号 | 34期号:11页码:921-924 |
英文摘要 | On the summit of Kilauea volcano, sulfur dioxide, which is continuously emitted from Halemaumau crater and rapidly sequestered into sulfuric-acid-rich aerosol entrained in the prevailing trade winds, is subsequently precipitated as acid fog immediately downwind from Kilauea caldera in the Kau Desert. The characteristic pH of surface tephra deposits is < 4.0 in Sand Wash, a region of nearly continuous, acidic aerosol fallout immediately southwest of the caldera. Vertical exposures of unconsolidated tephras of the Keanakakoi Ash found within fissures and small, dry gullies are coated with thin rock coatings of amorphous silica and jarosite. These rock coatings are formed via an evaporative mechanism whereby acidic pore fluids, circulating in the upper few meters within the highly porous tephra, are wicked toward the walls of the gullies. Geochemical modeling of the rock coating formation process implies that the sulfate formation via evaporation occurs subsequent to minimal interaction of acidic pore fluids with the basaltic tephra. This also suggests that the cycle from acid-fog fallout to precipitation of the siliceous-sulfate rock coatings must occur quite rapidly. Acid-fog deposition of sulfate and silica at Kilauea may provide one mechanism for the origin of jarosite-bearing outcrops on Mars. |
英文关键词 | Kilauea Mars weathering rock coatings jarosite amorphous silica |
类型 | Article |
语种 | 英语 |
国家 | USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000241706800007 |
WOS关键词 | MERIDIANI-PLANUM ; JAROSITE ; SPECTRA ; HAWAII ; ORIGIN ; MODEL |
WOS类目 | Geology |
WOS研究方向 | Geology |
来源机构 | University of California, Davis |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/151521 |
作者单位 | (1)Univ Calif Davis, Dept Geol, Davis, CA 95616 USA;(2)NASA, Ames Res Ctr, SETI Inst, Mountain View, CA USA;(3)Mt Holyoke Coll, Dept Astron, S Hadley, MA 01075 USA |
推荐引用方式 GB/T 7714 | Schiffman, Peter,Zierenberg, Robert,Marks, Naomi,et al. Acid-fog deposition at Kilauea volcano: A possible mechanism for the formation of siliceous-sulfate rock coatings on Mars[J]. University of California, Davis,2006,34(11):921-924. |
APA | Schiffman, Peter,Zierenberg, Robert,Marks, Naomi,Bishop, Janice L.,&Dyar, M. Darby.(2006).Acid-fog deposition at Kilauea volcano: A possible mechanism for the formation of siliceous-sulfate rock coatings on Mars.GEOLOGY,34(11),921-924. |
MLA | Schiffman, Peter,et al."Acid-fog deposition at Kilauea volcano: A possible mechanism for the formation of siliceous-sulfate rock coatings on Mars".GEOLOGY 34.11(2006):921-924. |
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