论文标题
月球着陆点的地质映射和年表：阿波罗11
Geological Mapping and Chronology of Lunar Landing Sites: Apollo 11
论文作者
论文摘要
火山口大小分布（CSFD）测量值允许基于对月球年表的身体特定调整，允许在太阳系中各个陆地系统的地质单位推导绝对模型年龄（AMA）（例如，Hartmann，1970年； Neukum等，1975; Neukum et al。罗宾斯，2014年）。 Thus, it is important to revisit and test the accuracy of the lunar chronology using data from recent lunar missions (e.g., Hiesinger et al., 2000, 2012, 2015; Rajmon and Spudis, 2004; Stoeffler et al., 2006), as well as newer analyses of lunar samples (e.g., Gaffney et al. 2011, Meyer, 2012; Snape et al., 2016; Welsh等，2018）。我们根据光谱特征，地形和反照率图生成了一个新的Apollo 11着陆区域登陆区域的详细地质图，该图显示了与月球模块相邻的几个母马单元。月球侦察轨道摄像头（LROC）图像用于测量新的CSFD，并得出Apollo 11着陆点的直径大于或等于1 km或N（1）的山口累积数量。新得出的n（1）值与着陆点仅存在一个表面单位：A组A组，高钾（高钾）Young Mare玄武岩（Meyer，2012）。我们回顾了自从月球遍布年表的校准以来已经确定的阿波罗11个样品的辐射年龄，使用了我们的新地质图来重新解释其出处，并将它们与新的N（1）值相关联。这些是绘制的，并与Neukum等人的月球年表进行了比较。 （1983）。我们对Apollo 11着陆点的校准点与较早的值一致，因此证实了Neukum（1983）的月球年代曲线。
Crater size-frequency distribution (CSFDs) measurements allow the derivation of absolute model ages (AMAs) for geological units across various terrestrial bodies in the Solar System based on body-specific adjustments to the lunar chronology (e.g., Hartmann, 1970; Neukum et al., 1975, 1983, 2001; Stoeffler et al., 2001, 2006; Hiesinger et al., 2012; Robbins, 2014). Thus, it is important to revisit and test the accuracy of the lunar chronology using data from recent lunar missions (e.g., Hiesinger et al., 2000, 2012, 2015; Rajmon and Spudis, 2004; Stoeffler et al., 2006), as well as newer analyses of lunar samples (e.g., Gaffney et al. 2011, Meyer, 2012; Snape et al., 2016; Welsh et al., 2018). We generated a new detailed geological map of the Apollo 11 landing region based on spectral characteristics, topography, and albedo maps, which shows several mare units adjacent to the lunar module. Lunar Reconnaissance Orbiter Camera (LROC) images were used to measure new CSFDs and derive the cumulative number of craters with diameters greater than or equal to 1 km or N(1) for the Apollo 11 landing site. The newly derived N(1) values are consistent with the presence of only one surficial unit at the landing site: the Group A, High-K (high potassium) young mare basalt (Meyer, 2012). We reviewed the radiometric ages for Apollo 11 samples that have been determined since the calibration of the lunar cratering chronology, used our new geological map to reinterpret their provenance, and correlated them with the new N(1) values. These are plotted and compared with the lunar chronology of Neukum et al. (1983). Our calibration point for the Apollo 11 landing site is consistent with the earlier values, thus, confirming Neukum's (1983) lunar chronology curve.
