摘要
条带状铁建造(BIF)是前寒武纪特有的海相化学沉积岩,是早期地壳的重要组成部分,记录了地球早期构造演化、古环境变化和原始生命活动等重要信息。富有不同尺度的韵律条带是BIF的重要特征,尽管BIF的物质来源和沉积条件等研究已经取得丰富的成果,但关于BIF中不同尺度条带的成因仍是极具争议的话题。近年来,地质学家在BIF地层中识别出大量可靠的米兰科维奇旋回记录,创新性地提出了天文轨道驱动了BIF中不同尺度韵律条带的形成。本文系统梳理了旋回地层学在BIF地层中的研究进展,关注地球轨道旋回驱动的气候变化对BIF的影响,并进一步探讨其在华北克拉通BIF中的研究前景。
Banded iron formation(BIF)is chemical marine sedimentary rock that formed exclusively during the Precambrian.They constitute a significant component of the early crust and provide important insights into the tectonic evolution,ancient environmental changes,and primitive life activities on early Earth.A defining characteristic of BIF is their distinctive rhythmic banding,which occurs at various scales.Despite significant advances in understanding the sources of ore-forming materials and the depositional conditions of BIF,the origin of this banding is still being debated.In recent years,geologists have identified numerous reliable Milankovitch cycles records within BIF stratigraphy,leading to innovative theories proposing astronomical forcing as a driving factor for the formation of these rhythmic bands.This paper presents a comprehensive review of cyclostratigraphy in BIF,with a specific focus on exploring the impact of climate change driven by Earths orbital parameters.Furthermore,this study presents key unresolved issues and explores future prospects for cyclostratigraphic studies on BIF in the North China craton.
作者
白阳
马坤元
张连昌
王长乐
BAI Yang;MA Kunyuan;ZHANG Lianchang;WANG Changle(College of Geological and Surveying Engineering,Taiyuan University of Technology,Taiyuan,Shanxi 030024,China;State Key Laboratory of Lithospheric and Environmental Coevolution,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China;University of Chinese Academy of Sciences,Beijing 100049,China)
出处
《地质学报》
北大核心
2025年第7期2439-2450,共12页
Acta Geologica Sinica
基金
山西省基础研究计划资助项目(编号202303021212041,202103021223037)
国家自然科学基金项目(编号42150104,42202030)
中国科学院基础前沿科学研究计划从0到1原始创新项目(编号ZDBS-LY-DQC037)
中国科学院青年创新促进会联合资助的成果。
