古生代旋回地层学与天文地质年代表  

Paleozoic Cyclostratigraphy and Astronomical Time Scale

作　　者：吴怀春[1,2] 钟阳阳 房强[1,2] 杨天水[1] 李海燕[1] 张世红[1] WU Huai-chun;ZHONG Yang-yang;FANG Qiang;YANG Tian-shui;LI Hai-yan;ZHANG Shi-hong(State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Beijing 100083, China;School of Ocean Sciences, China University of Geosciences, Beijing 100083, China)

机构地区：[1]中国地质大学(北京)生物地质与环境地质国家重点实验室,北京100083 [2]中国地质大学(北京)海洋学院,北京100083

出　　处：《矿物岩石地球化学通报》2017年第5期750-770,共21页Bulletin of Mineralogy, Petrology and Geochemistry

基　　金：国家自然科学基金项目(41422202;41576062;41688103);中央高校基本科研业务费专项资金项目(2652015297;2652015162)

摘　　要：古生代是显生宙距今最为久远且持续时间最长的"代",发生了多次重大构造、气候和生命演化事件。高精度年代地层格架对于深入理解古生代地球演化历史极为关键。通过识别地层中由地球轨道力引起的米兰科维奇沉积旋回并开展调谐研究,可建立连续的、分辨率达0.02~0.4Ma天文年代标尺,并用于校正国际地质年代表。目前,国际地质年代表的中、新生代部分已基本完成天文年代的校正,但古生代部分尚未开展相关工作。近年来,人们在古生代地层中获得了可靠的、受高精度放射性绝对年龄约束的米兰科维奇旋回证据,并尝试建立天文年代标尺,表明建立古生代天文地质年代表具有良好的远景,是未来旋回地层学研究的前沿。本文简要介绍了旋回地层学的基本理论,系统总结了古生代旋回地层学研究成果及重要进展,并对未来研究提出展望。The Paleozoic Era is the earliest and longest geologic era of the Phanerozoic. A series of major events of tectonics,life evolutions and climate changes happened during the Paleozoic. High-resolution geological time scale of the stratigraphy plays a critical role in understanding the evolution of the Earth in the Paleozoic. Based on identifying and studying the Milankovitch cycles in sedimentary strata resulted from the orbital force of the Earth,a continuous ultra-high resolution（ 0. 02-0. 4Ma） astronomical time scale（ ATS） can be constructed and then applied to calibrate the international geological time scale. The calibration of the Cenozoic-Mesozoic eras of the international geological time scale by applying the ATS has been basically completed,but that of the Paleozoic has not been conducted yet. Recently,calibrated evidences of the Milankovitch cycles,constrained by reliable high-precision radiometric ages,in the Paleozoic strata have been obtained for trying to establish the ATS,indicating that there is a good potential for the establishment of the Paleozoic ATS,which is the frontier for studying the Paleozoic cyclostratigraphy in future. This paper is going to briefly introduce the basic theory of cyclostratigraphy,systematically review achievements and progresses of researches on the Paleozoic cyclostratigraphy,and propose prospective views for the research in future.

关 键 词：地球轨道力 米兰科维奇旋回 旋回地层学 古生代天文年代标尺 

分 类 号：P53[天文地球—古生物学与地层学]