中国科学院地球化学研究所刘建忠的研究团队在最新研究中，报道了从月球动态演化的角度看月球时标。该项研究成果发表在2023年12月15日出版的《中国科学：地球科学》上。

在对月球演化的动力学变化进行全面回顾的基础上，研究人员提出了对当前月球时间尺度范式的两个主要更新，以包括目前已知影响早期月球历史的内生和外生动力的演化。首先，基于外生和内生过程在时间上的相互作用，研究定义了三个Eon/ Eonothem—级别的单元来代表三个动态演化阶段。其次，对前—Nectarian系统进行了重新定义，划分为岩浆海洋时代岩浆—海洋系统和以南极—Aitken盆地为起点的Aitken系统。

该盆地的喷出物，即沉积在原始月球地壳上Das组，是由外生作用产生的最古老的地层。在阿波罗计划后的探索和研究进展的推动下，更新的月球时间尺度提供了一个描述月球演化的综合框架，并对其他类地行星的地质研究具有重要意义。

据悉，地质时标是将行星的地质地层按时间顺序划分为不同单位并显示其递进演化的年代体系。月球的时间尺度是在半个世纪前用望远镜进行的早期阿波罗探测时代建立起来的，当时的数据空间覆盖范围和分辨率都很有限。在过去的几十年里，人们进行了大量的研究，这些研究大大扩展了人们对全球月球地质演化的理解。

附：英文原文

Title: A lunar time scale from the perspective of the Moon’s dynamic evolution

Author:Dijun GUO, Jianzhong LIU, James W. HEAD, Fuqin ZHANG, Zongcheng LING, Shengbo CHEN, Jianping CHEN, Xiaozhong DING, Jinzhu JI, ZIyuan OUYANG

Issue&Volume: 2023-12-15

Abstract: A geologic time scale is a chronological system that separates the geological strata of a planetary body into different units in temporal sequence and shows its progressive evolution. The time scale of the Moon was established a half-century ago during the telescopic-early Apollo exploration era, using data with limited spatial coverage and resolution. The past decades have seen a wide array of studies, which have significantly extended our understanding of global lunar geologic evolution. Based on a comprehensive review of lunar evolution with respect to the dynamical changes, we propose two major updates to the current lunar time scale paradigm to include the evolution of both endogenic and exogenic dynamic forces now known to have influenced early lunar history. Firstly, based on the temporal interplay of exogenic and endogenic processes in altering the Moon, we defined three Eon/Eonothem-level units to represent three dynamical evolutionary phases. Secondly, the pre-Nectarian System is redefined and divided as the magma ocean-era Magma-oceanian System and the following Aitkenian System beginning with the South Pole-Aitken basin. The ejecta of this basin, Das Formation, was deposited on the primordial lunar crust as the oldest stratum produced from exogenic processes. The updated lunar time scale, facilitated by the post-Apollo exploration and research advances, provides an integrated framework to depict the evolution of the Moon and has important implications for the geologic study of other terrestrial planets.

DOI: 10.1007/s11430-022-1183-4

Source: https://www.sciengine.com/10.1007/s11430-022-1183-4