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首页> 外文期刊>Palaeogeography, Palaeoclimatology, Palaeoecology: An International Journal for the Geo-Sciences >Cyclostratigraphy and astrochronology: Case studies from China
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Cyclostratigraphy and astrochronology: Case studies from China

机译：CyclostraTigraphy和Astrochronology：来自中国的案例研究

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摘要

A high-precision geologic time scale is the essential key for understanding the Earth's evolutionary history and geologic processes. Astronomical tuning of orbitally forced stratigraphic records to construct high-resolution Astronomical Time Scales (ATS) has led to a progressive refinement of the geologic time scale over the past two decades. In turn, these studies provide new insights regarding the durations and rates of major Earth events, evolutionary processes, and climate changes, all of which provide a scientific basis for contextualizing and predicting future global change trends. South China hosts some of the best-exposed and well-dated Neoproterozoic through Mesozoic stratigraphic sections in the world; many of which are suitable for cyclostratigraphy and calibrating the geologic time scale. In North China, several Cenozoic oil-bearing basins have deep boreholes with continuous sampling and/or well logging that enable derivation of astronomically tuned time scales for an improved understanding of basin evolution and hydrocarbon generation. This Special Issue focuses on case studies of astrochronology and applied cyclostratigraphy research using reference sections within China. In this introductory overview, we: (1) summarize all existing astrochronology studies of the Neoproterozoic through Cenozoic sections within China that have been used to enhance the international geologic time scale, (2) examine briefly the astronomically forced paleoclimate information recorded in various depositional systems and the modern techniques employed to analyze the periodicity of these signals encoded within the sedimentary record, and (3) summarize the 20 contributions to this Special Issue of Palaeogeography, Palaeoclimatology, Palaeoecology on 'Cyclostratigraphy and Astrochronology: Case studies from China'.
机译：高精度的地质时间尺度是理解地球演化历史和地质过程的关键。在过去的二十年里，通过对轨道强迫地层记录进行天文调整，以构建高分辨率天文时标（ATS），从而逐步完善了地质时标。反过来，这些研究为重大地球事件、演化过程和气候变化的持续时间和速率提供了新的见解，所有这些都为分析和预测未来全球变化趋势提供了科学依据。中国南方拥有世界上暴露最好、年代久远的新元古代至中生代地层剖面；其中许多适用于旋回地层学和校准地质时间尺度。在中国北方，几个新生代含油气盆地都有深井，通过连续采样和/或测井，可以推导出天文调整的时间尺度，从而更好地了解盆地演化和油气生成。本期特刊关注中国境内使用参考剖面进行的天文年代学和应用旋回地层学研究的案例研究。在这篇介绍性概述中，我们：（1）总结了中国境内新元古代到新生代剖面的所有现有天文年代学研究，这些研究已被用于增强国际地质时间尺度，（2）简要检查各种沉积体系中记录的天文强迫古气候信息，以及用于分析沉积记录中编码的这些信号的周期性的现代技术，以及（3）总结本期《古地理学、古气候学、，《旋回地层学和天文年代学：中国案例研究》的古生态学。

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