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首页> 外文期刊>Journal of geophysical research. Planets >Mineralogical Diversity and Geology of Humboldt Crater Derived Using Moon Mineralogy Mapper Data
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Mineralogical Diversity and Geology of Humboldt Crater Derived Using Moon Mineralogy Mapper Data

机译：利用月亮矿物质映射数据培养的矿物学多样性和地质的洪水火山口衍生

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Moon Mineralogy Mapper (M~3) spectroscopic data and high-resolution imagery data sets were used to study the mineralogy and geology of the 207 km diameter Humboldt crater. Analyses of M~3 data, using a custom-made method for M~3 spectra continuum removal and spectral parameters calculation, reveal multiple pure crystalline plagioclase detections within the Humboldt crater central peak complex, hinting at its crustal origin. However, olivine, spinel, and glass are observed in the crater walls and rims, suggesting these minerals derive from shallower levels than the plagioclase of the central peak complex. High-calcium pyroxenes are detected in association with volcanic deposits emplaced on the crater's floor. Geologic mapping was performed, and the age of Humboldt crater's units was estimated from crater counts. Results suggest that volcanic activity within this floor-fractured crater spanned over a billion years. The felsic mineralogy of the central peak complex region, which presumably excavated deeper material, and the shallow mafic minerals (olivine and spinel) detected in Humboldt crater walls and rim are not in accordance with the general view of the structure of the lunar crust. Our observations can be explained by the presence of a mafic pluton emplaced in the anorthositic crust prior to the Humboldt-forming impact event. Alternatively, the excavation of Australe basin ejecta could explain the observed mineralogical detections. This highlights the importance of detailed combined mineralogical and geological remote sensing studies to assess the heterogeneity of the lunar crust.
机译：Moon Mineralogy Mapper（M〜3）光谱数据和高分辨率图像数据集用于研究207公里直径的Humboldt火山口的矿物学和地质。 M〜3数据分析，采用定制方法，用于M〜3光谱连续核去除和光谱参数计算，揭示了Humboldt Crater中央峰值复合物内的多种纯晶型Plagioclase检测，在其地壳起源处暗示。然而，在火山口壁和轮辋中观察到橄榄石，尖晶石和玻璃，表明这些矿物质从中中央峰值复合物的Plagioclase衍生出较浅的水平。与火山口的地板上施加的火山沉积物相关联检测高钙纤锌。进行地质映射，从火山口计数估算Humboldt火山口的单位的年龄。结果表明，这个楼层破碎的火山口内的火山活动超过了十亿年。中央峰值复杂区域的肠矿物，可能是在Humboldt火山口壁和边缘中检测到的更深的更深的材料和浅mafic矿物（橄榄石和尖晶石）并不符合月球地壳结构的一般视图。我们的观察结果可以通过在Humboldt形成冲击事件之前在华骨科外壳中施加的麦克风芦苇进行解释。或者，Autterale盆地喷射物的挖掘可以解释观察到的矿物学检测。这突出了详细组合矿物学和地质遥感研究的重要性，以评估月球地壳的异质性。

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