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国家教育部博士点基金(20130145130001)

作品数:3 被引量:22H指数:2
相关作者:赵健楠肖龙更多>>
相关机构:中国地质大学更多>>
发文基金:国家教育部博士点基金国家自然科学基金中国博士后科学基金更多>>
相关领域:天文地球更多>>

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火星古湖泊研究的现状、问题与展望被引量:8
2016年
火星表面的古湖泊地貌能够反映火星古气候和古环境的特征及变化,对于研究火星是否曾经存在宜居环境具有重要意义.随着中国火星探测计划的提出和实施,详细了解火星古湖泊的研究进展尤为重要.总结了火星古湖泊的研究现状,重点阐述了当前对火星古湖泊的沉积地貌、矿物成分、形成年龄、分布特征等方面的研究进展.在综合分析前人研究成果的基础上,提出火星古湖泊研究中存在的主要问题,认为未来应着重在古湖泊的详细调查与地质填图、古湖泊的后期改造作用、其他类型古湖泊的识别分析以及火星与地球古湖泊的对比等方面开展研究.
赵健楠肖龙
关键词:火星古湖泊遥感地貌学沉积物
Compositional evolution of lava plains in the Syria-Thaumasia Block,Mars
2014年
Tharsis is the most prominent volcanic province on Mars,yet the compositions of lava flows and how composition relates to the development of Tharsis are poorly known.Most of Tharsis is covered with air-fall dust,which inhibits spectroscopic determination of lava mineralogy.The Syria-Thaumasia Block(STB)is a complex tectono-volcanic province closely related to the Tharsis bulge.The lava plains of STB have different emplacement ages,which provide an opportunity to examine whether magma composition changed with the evolution of Tharsis.In this study,we assessed the lava plains using Thermal Emission Spectrometer(TES)data.Using derived physical properties,we targeted dust-free regions from four different-aged geological units'surfaces and determined the mineralogical composition by modeling the average TES surface spectrum from each of the four surfaces.All units have similar mineralogy but the younger two units have elevated abundance of high-SiO2phases.The spatial distribution of wrinkle ridges indicates lava plains of unit HNr(older ridged plains material)and Hr(younger ridged plains material)were emplaced before the rise of Tharsis,whereas Hsl(flows of lower member)and Hsu(upper member)were emplaced after Tharsis uplift was initiated.We show that the magma composition differed in the lava plains of STB after the uplift of Tharsis.This study further characterizes early martian magma composition and evolution.
HUANG JunXIAO Long
关键词:THARSISMARS
Geologic characteristics of the Chang'E-3 exploration region被引量:14
2014年
We present topographic, geomorphologic and compositional characteristics of a l°×l° (-660 km2) region centered near the landing site of Chang'E-3 using the highest spatial resolution data available. We analyze the topography and slope using Digi- tal Terrain Model (DTM) generated from Terrain Camera (TC) images. The exploration region is overall relatively flat and the elevation difference is less than 300 m, and the slopes of 80% area are less than 5~. Impact craters in the exploration region are classified into four types based on their degradation states. We investigate the wrinkle ridges visible in the exploration region in detail using TC and Lunar Reconnaissance Orbiter (LRO) Narrow Angle Camera (NAC) images. We calculate FeO and TiO2 abundances using Multispectral Imager (MI) data, and confirm two basaltic units: the northern part belongs to Imbrian low-Ti/very-low-Ti mare basalts, and the southern part is Eratosthenian low-Ti/high-Ti mare basalts. Finally, we produce a ge- ological map and propose the geologic evolution of the exploration region. We also suggest several rover traverses to explore interesting targets and maximize the potential scientific output.
ZHAO JianNanHUANG JunQIAO LeXIAO ZhiYongHUANG QianWANG JiangHE QiXIAO Long
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