A young multilayered terrane of the northern Mare Imbrium revealed by Chang’E-3 mission
A young multilayered terrane of the northern Mare Imbrium revealed by Chang’E-3 mission
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DOI：
10.1126/science.1259866
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发表时间：
2015-03
期刊：
影响因子：
56.9
通讯作者：
Long Xiao;P. Zhu;G. Fang;Zhiyong Xiao;Yongliao Zou;Jiannan Zhao;N. Zhao;Yuefeng Yuan;L. Qiao-L.-Qi
中科院分区：
文献类型：
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作者：
Long Xiao;P. Zhu;G. Fang;Zhiyong Xiao;Yongliao Zou;Jiannan Zhao;N. Zhao;Yuefeng Yuan;L. Qiao-L.-Qi
在月球历史上较为活跃的时期，火山爆发产生了熔岩平原，形成了一层层的黑色玄武岩。没有地下探测，我们只能检查最近的流量。在嫦娥三号飞船软着陆后，肖等人用玉兔号探测器对月球地壳进行了穿透雷达测量。几个地下层表明，在整个地壳历史中，多种地质过程在起作用，包括多次熔岩流和风化引起的灰尘和岩石碎片的产生。《科学》，本期第1226页，对月球地壳进行的现场探地雷达测量揭示了多层风化层和熔岩流。中国的嫦娥三号（CE-3）航天器降落在月球近侧的北方内海（340.49°E，44.12°N），这是一个以前没有直接采样的区域。我们报告了CE-3着陆器下降相机和Yutu漫游者相机和穿透雷达数据的初步结果。在一个年轻的450米的火山口边缘着陆后，玉兔号探测器在喷出物覆盖层上行驶了114米，拍摄了粗糙的表面和挖掘出来的巨石。巨砾含有大量晶体，很可能是斜长石和/或类似于陆地粗玄岩的其他镁铁质硅酸盐矿物聚集体。月球穿透雷达探测和综合地质解释已经确定了九个以上的地下层，这表明该地区自Imbrian以来经历了复杂的地质过程，并且在成分上与阿波罗和月球着陆点不同。
Onsite radar shows what lies beneath In more active periods of the Moon's history, volcanic eruptions created lava plains that formed layers of dark basalt. Without subsurface probing, we can only examine the most recent flows. After the soft landing of the Chang'E-3 spacecraft, Xiao et al. made penetrating radar measurements of the lunar crust with the Yutu rover. Several subsurface layers suggest multiple geologic processes at play throughout the crustal history, including multiple lava flows and the weathering-induced creation of dust and rocky debris. Science, this issue p. 1226 In situ ground-penetrating radar measurements of the lunar crust reveal multiple layers of regolith and lava flows. China’s Chang’E-3 (CE-3) spacecraft touched down on the northern Mare Imbrium of the lunar nearside (340.49°E, 44.12°N), a region not directly sampled before. We report preliminary results with data from the CE-3 lander descent camera and from the Yutu rover’s camera and penetrating radar. After the landing at a young 450-meter crater rim, the Yutu rover drove 114 meters on the ejecta blanket and photographed the rough surface and the excavated boulders. The boulder contains a substantial amount of crystals, which are most likely plagioclase and/or other mafic silicate mineral aggregates similar to terrestrial dolerite. The Lunar Penetrating Radar detection and integrated geological interpretation have identified more than nine subsurface layers, suggesting that this region has experienced complex geological processes since the Imbrian and is compositionally distinct from the Apollo and Luna landing sites.