DOI: 10.1002/2014GL061779
论文题名: Knobby terrain on ancient volcanoes as an indication of dominant early explosive volcanism on Mars
作者: Huang J. ; Xiao L.
刊名: Geophysical Research Letters
ISSN: 0094-9694
EISSN: 1944-9425
出版年: 2014
卷: 41, 期: 20 起始页码: 7019
结束页码: 7024
语种: 英语
英文关键词: explosive volcanism
; knobby terrains
; Mars
; thermal inertia
; volcano
Scopus关键词: Explosives
; Granular materials
; Spectrum analysis
; Submarine geophysics
; Thermodynamic properties
; Volcanoes
; Aqueous alteration
; Explosive volcanism
; Fine-grained material
; High resolution image
; Hyperspectral Data
; knobby terrains
; Mars
; Thermal inertia
; Landforms
; data set
; lava flow
; Mars
; Martian atmosphere
; resolution
; tephra
; terrain
; upper crust
; volcanic eruption
; volcanism
; volcano
英文摘要: Determining if the mechanically weak materials of the upper crust are products of early explosive volcanism or generated by modification of extensive effusive lava flows is important for understanding the geologic and thermal history of Mars. We examined 75 recently identified preserved ancient volcanoes, whose eruption styles are representative of early volcanism. We describe a unique knobby terrain that is associated with 17 of these volcanoes. This newly identified terrain is characterized by a combination of high-resolution images and thermophysical and thermal infrared hyperspectral data. The morphology characteristics of these knobby terrains are similar to terrestrial eroded ignimbrites, and the thermophysical properties indicate that they are composed of unconsolidated fine-grained materials. The spectral analysis indicates that they experienced some aqueous alteration. We explain the knobby terrain associated with these ancient volcanoes as the products of an early explosive volcanic phase in Martian history, followed by subsequent modification of these deposits. Key Points We first identified a new feature of knobby terrain on ancient Martian volcanoesThe knobby terrain is made of fine-grained materials (tephra)The knobby terrains indicate a dominant early explosive volcanism ©2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84911414206&doi=10.1002%2f2014GL061779&partnerID=40&md5=9694451c72a2aa957d6741614d075ec5
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6958
Appears in Collections: 气候减缓与适应
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作者单位: Planetary Science Institute, China University of Geosciences, Wuhan, China
Recommended Citation:
Huang J.,Xiao L.. Knobby terrain on ancient volcanoes as an indication of dominant early explosive volcanism on Mars[J]. Geophysical Research Letters,2014-01-01,41(20).