Deciphering late Neoarchean orogenesis through structural analysis of the Taishan Group, eastern North China Craton

IF 2.7 2区地球科学 Q2 GEOSCIENCES, MULTIDISCIPLINARY

Precambrian Research Pub Date : 2025-11-01 Epub Date: 2025-10-15 DOI:10.1016/j.precamres.2025.107944

Xiaodong Li , Wei Wang , Zhonghua Tian , Du Jia , Fei Wen , Fulai Liu

{"title":"Deciphering late Neoarchean orogenesis through structural analysis of the Taishan Group, eastern North China Craton","authors":"Xiaodong Li , Wei Wang , Zhonghua Tian , Du Jia , Fei Wen , Fulai Liu","doi":"10.1016/j.precamres.2025.107944","DOIUrl":null,"url":null,"abstract":"<div><div>The scientific community is currently engaged in an ongoing debate and controversy regarding the dominant mechanisms of Archean rock deformation, specifically whether it primarily occurred through vertical processes associated with sinking or through horizontal deformation involving subduction. The Western Shandong Province in the North China Craton represents a key area for investigating this question. In this study, we conducted detailed cross-section mapping and micro/mesoscale structural analysis of the Taishan Group within the central part of the Western Shandong Province. The DA-1 structure exhibited an early foliation (S1), while the DA-2 structure showed F2 folding, parasitic folds, S2 crenulation cleavage and spaced cleavage. Furthermore, we identified thrust faults within the DA-2 structure. The DA-3 structure was defined by a shear zone and subsequent formation of kink bands. By integrating our geochronological data with regional tectonic information, we found that the DA-1 deformation predated 2550 Ma, the DA-2 deformation occurred between 2550 Ma and 2525 Ma, while the DA-3 deformation took place between 2525 Ma and 2501 Ma. Our study demonstrates that the observed deformation phases produced by Archean orogenesis in the Taishan Group exhibit characteristics consistent with those found in modern orogenic belts. Consequently, we can conclude that the observed NNW-SSE linear structures result from horizontal movements produced by the plate tectonic system rather than dome-and-basin deformation in the Western Shandong Province.</div></div>","PeriodicalId":49674,"journal":{"name":"Precambrian Research","volume":"430 ","pages":"Article 107944"},"PeriodicalIF":2.7000,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Precambrian Research","FirstCategoryId":"89","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0301926825002700","RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/10/15 0:00:00","PubModel":"Epub","JCR":"Q2","JCRName":"GEOSCIENCES, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

The scientific community is currently engaged in an ongoing debate and controversy regarding the dominant mechanisms of Archean rock deformation, specifically whether it primarily occurred through vertical processes associated with sinking or through horizontal deformation involving subduction. The Western Shandong Province in the North China Craton represents a key area for investigating this question. In this study, we conducted detailed cross-section mapping and micro/mesoscale structural analysis of the Taishan Group within the central part of the Western Shandong Province. The D_A-1 structure exhibited an early foliation (S₁), while the D_A-2 structure showed F₂ folding, parasitic folds, S₂ crenulation cleavage and spaced cleavage. Furthermore, we identified thrust faults within the D_A-2 structure. The D_A-3 structure was defined by a shear zone and subsequent formation of kink bands. By integrating our geochronological data with regional tectonic information, we found that the D_A-1 deformation predated 2550 Ma, the D_A-2 deformation occurred between 2550 Ma and 2525 Ma, while the D_A-3 deformation took place between 2525 Ma and 2501 Ma. Our study demonstrates that the observed deformation phases produced by Archean orogenesis in the Taishan Group exhibit characteristics consistent with those found in modern orogenic belts. Consequently, we can conclude that the observed NNW-SSE linear structures result from horizontal movements produced by the plate tectonic system rather than dome-and-basin deformation in the Western Shandong Province.

查看原文本刊更多论文

华北克拉通东部泰山群构造解析新太古代晚期造山作用

目前科学界对太古宙岩石变形的主要机制进行了持续的争论和争论，特别是它主要是通过与下沉相关的垂直过程还是通过与俯冲有关的水平变形发生的。华北克拉通的鲁西地区是研究这一问题的重点地区。本文对鲁西中部的泰山群进行了详细的剖面填图和微中尺度构造分析。DA-1结构表现为早期叶理（S1），而DA-2结构表现为F2褶皱、寄生褶皱、S2粒裂解理和间隙解理。此外，在DA-2构造中还发现了逆冲断层。DA-3结构由剪切带和扭结带的形成确定。将年代学资料与区域构造信息相结合，发现DA-1变形发生在2550 Ma之前，DA-2变形发生在2550 Ma ~ 2525 Ma之间，DA-3变形发生在2525 Ma ~ 2501 Ma之间。研究表明，泰山群太古宙造山带的变形阶段与现代造山带的变形阶段具有一致的特征。因此，我们可以得出结论，NNW-SSE线状构造是由板块构造系统产生的水平运动而不是由丘盆变形引起的。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Precambrian Research 地学-地球科学综合

CiteScore

7.20

自引率

28.90%

发文量

325

审稿时长

12 months

期刊介绍： Precambrian Research publishes studies on all aspects of the early stages of the composition, structure and evolution of the Earth and its planetary neighbours. With a focus on process-oriented and comparative studies, it covers, but is not restricted to, subjects such as: (1) Chemical, biological, biochemical and cosmochemical evolution; the origin of life; the evolution of the oceans and atmosphere; the early fossil record; palaeobiology; (2) Geochronology and isotope and elemental geochemistry; (3) Precambrian mineral deposits; (4) Geophysical aspects of the early Earth and Precambrian terrains; (5) Nature, formation and evolution of the Precambrian lithosphere and mantle including magmatic, depositional, metamorphic and tectonic processes. In addition, the editors particularly welcome integrated process-oriented studies that involve a combination of the above fields and comparative studies that demonstrate the effect of Precambrian evolution on Phanerozoic earth system processes. Regional and localised studies of Precambrian phenomena are considered appropriate only when the detail and quality allow illustration of a wider process, or when significant gaps in basic knowledge of a particular area can be filled.