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引用本文:

DOI:

10.11834/jrs.20243512

收稿日期:

2023-11-30

修改日期:

2024-03-18

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1:250万月球酒海幅(LQ-20)地质图编研
刘敬稳1, 刘建忠1, 朱凯1, 张敬宜1, 张珂1, 吴聪哲2, 雷丹泓1
1.中国科学院地球化学研究所;2.吉林大学
摘要:

在嫦娥探月数据及其他月球地质资料的基础上,中国科学院地球化学研究所主导的团队编制了比例尺为1:250万的全月地质图、月球分幅地质图、月球构造纲要图、月球岩石分布图以及30分幅地质图,其中就包括LQ-20酒海幅。LQ-20图幅以其独特的酒海纪与艾肯纪交界的标志事件——酒海盆地撞击事件而引人注目。本文详细介绍了月球地质图的编研的发展历史、LQ-20分幅图的图幅表达的内容,并阐述了该图幅表达的岩石类型、撞击盆地和撞击坑物质、构造形迹特征等:图幅中表达了12类岩石类型、8个盆地的地质信息、260个撞击坑的坑物质、16类构造形迹特征涉及了整个三宙六纪的地质信息。最后讨论了该月球图幅区域内从岩浆洋纪到哥白尼纪的整体区域地质演化历史、并提出我国1:250万月球地质图与美国月球地质图在表达地质信息上的本质区别在于其对月球地质过程整体的地质体系的完整建立与系统表达,每处地质信息都明确表达其地质作用来源,每个区域都有层次分明的按形成顺序排列的地质过程,这为我国乃至全球月球就位探测、科学研究等提供了一份详尽的月球地质背景资料。

1:250,000 Geological Map Compilation and Research of the Nectaris Quadrangle (LQ-20) on the Moon
Abstract:

Based on the Chang"E lunar exploration data and other lunar geological data, the team led by the Institute of Geochemistry of the Chinese Academy of Sciences has compiled a series of lunar global geological maps. These maps include a 1:2,500,000-scale global geologic map, a digital global lithologic map, and a global tectonic map. At the same time, 30 lunar quadrangle geological maps were also compiled, including the LQ-20 Nectaris Quadrangle map. The LQ-20 map is eye-catching because it depicts the impact event of the Mare Nectaris Basin, which divided the Nectarian and Aitkenian periods, during the Nectarium classic formation event. This article provides a detailed overview of the development history of lunar geological mapping. It discusses the various geological features observed in the LQ-20, including rock types, impact basins, crater materials, and structural characteristics:12 rock types, basin formations on 8 impact basins, crater materials from 260 impact craters, and 16 types of structural characteristics, which covering geological information in the sixth periods. Finally, we discussed the regional geological evolution history of the LQ-20 map from the Magmatic Oceanic Period to the Copernican Period. We also compared the expression of geological features in the LQ-20 map to that of the USGS lunar geological map, highlighting the differences and advantages: the fundamental distinction in conveying geological information lies in the comprehensive establishment and systematic representation of the overall lunar geological processes as an integrated geological system; this involves providing a clear explanation of the geological causes for each unit, ensuring that each geological feature clearly conveys its origin; furthermore, each region is characterized by a distinct hierarchy of geological units arranged in chronological order. This project would provide lunar geological background information for lunar exploration, scientific research, and related endeavors, benefiting not only China but also the global communities.

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