DOI: 10.1002/2016GL068325
论文题名: Evidence from MESSENGER for sulfur- and carbon-driven explosive volcanism on Mercury
作者: Weider S.Z. ; Nittler L.R. ; Murchie S.L. ; Peplowski P.N. ; McCoy T.J. ; Kerber L. ; Klimczak C. ; Ernst C.M. ; Goudge T.A. ; Starr R.D. ; Izenberg N.R. ; Klima R.L. ; Solomon S.C.
刊名: Geophysical Research Letters
ISSN: 0094-9097
EISSN: 1944-8828
出版年: 2016
卷: 43, 期: 8 起始页码: 3653
结束页码: 3661
语种: 英语
英文关键词: geochemistry
; Mercury
; MESSENGER
; pyroclastic volcanism
Scopus关键词: Carbon
; Charge transfer
; Deposits
; Geochemistry
; Graphite
; Reflection
; Spectrometers
; X ray spectrometers
; Explosive volcanism
; MESSENGER
; Pyroclastic deposits
; Pyroclastic volcanism
; Reflectance spectroscopy
; Space environment
; Spectral reflectance measurements
; Ultraviolet wavelength
; Mercury (metal)
英文摘要: Targeted MErcury Surface, Space ENvironment, GEochemistry, and Ranging (MESSENGER) X-Ray Spectrometer measurements of Mercury's largest identified pyroclastic deposit are combined with neutron and reflectance spectroscopy data to constrain the composition of volatiles involved in the eruption that emplaced the pyroclastic material. The deposit, northeast of the Rachmaninoff basin, is depleted in S (relative to Ca and Si) and C, compared with the rest of Mercury's surface. Spectral reflectance measurements of the deposit indicate relatively high overall reflectance and an oxygen-metal charge transfer (OMCT) absorption band at ultraviolet wavelengths. These results are consistent with oxidation of graphite and sulfides during magma ascent, via reaction with oxides in the magma or assimilated country rock, and the formation of S- and C-bearing volatile species. Consumption of graphite during oxidation could account for the elevated reflectance of the pyroclastic material, and the strength of the OMCT band is consistent with ~0.03-0.1 wt % FeO in the deposit. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84964402377&doi=10.1002%2f2016GL068325&partnerID=40&md5=9e6a1a900c1b3eae29395631045fa942
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10060
Appears in Collections: 科学计划与规划 气候变化与战略
There are no files associated with this item.
作者单位: Department of Terrestrial Magnetism, Carnegie Institution of Washington, Washington, DC, United States
Recommended Citation:
Weider S.Z.,Nittler L.R.,Murchie S.L.,et al. Evidence from MESSENGER for sulfur- and carbon-driven explosive volcanism on Mercury[J]. Geophysical Research Letters,2016-01-01,43(8).