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首页> 美国卫生研究院文献>Wiley-Blackwell Online Open >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：利用月球矿物学制图仪数据得出的洪堡火山口的矿物学多样性和地质特征

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Moon Mineralogy Mapper (M3) 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 M3 data, using a custom‐made method for M3 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：利用月亮矿物学制图仪（M 3 ）的光谱数据和高分辨率图像数据集来研究直径207公里的洪堡火山口的矿物学和地质学。使用定制的M 3 光谱连续谱去除方法和光谱参数计算方法对M 3 数据进行分析，揭示了洪堡火山口中心峰复合物中的多个纯晶体斜长石检测，暗示其地壳起源。但是，在火山口的壁和边缘观察到橄榄石，尖晶石和玻璃，这表明这些矿物质的来源比中央峰复合物的斜长石更浅。检测到高钙辉石与火山口底部堆积的火山沉积物有关。进行了地质制图，并根据陨石坑计数估算了洪堡陨石坑的年龄。结果表明，这个底部破裂的火山口内的火山活动跨越了十亿年。中心峰复杂区域的长英质矿物学，可能是挖出了较深的物质，在洪堡火山口的壁和边缘发现的浅镁铁质矿物（橄榄石和尖晶石）与月球壳结构的一般观点不一致。我们的观察结果可以解释为，洪堡形成撞击事件发生之前，在镁硅质岩中存在着镁铁质岩体。另外，澳大利亚盆地喷出物的开挖可以解释观察到的矿物学发现。这凸显了详细结合矿物学和地质学遥感研究来评估月球地壳异质性的重要性。

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