Constraints on crustal compositional architecture across the North China-Altaids transition and implications for craton margin reworking

Zhuo Ye, Xiaomiao Tan, Rui Gao, Qiusheng Li, Hongshuang Zhang, Xiaoyang Wu, Wenhui Li, Yingkang Li
{"title":"Constraints on crustal compositional architecture across the North China-Altaids transition and implications for craton margin reworking","authors":"Zhuo Ye, Xiaomiao Tan, Rui Gao, Qiusheng Li, Hongshuang Zhang, Xiaoyang Wu, Wenhui Li, Yingkang Li","doi":"10.1093/nsr/nwae171","DOIUrl":null,"url":null,"abstract":"\n The phase of secular evolution of continents is manifested as the degree of compositional differentiation, modification, and maturation of continental crusts, which is vital in understanding the mechanism of continental evolution but is difficult to quantify. Here we use integrated passive- and active-source seismic profiling to conduct joint analysis and inversion and derive Vs and Vp/Vs section models across the North China craton (NCC) to southeastern Altaids boundary zone that bears a tectonic transition from a reworked ancient craton margin to a Phanerozoic accretionary orogen. We systematically exploited the imaged multiple physical properties as precise and delicate proxies to constrain the compositional architecture in the crust across this important tectonic transition subject to various crustal evolutional phases. Our Vs and Vp/Vs imaging, together with the existing isotopic data, characterizes the Yin Shan-Yan Shan belt as the northern NCC margin with layered homogeneous compositions that point to an evolved crust. However, the lower-crustal low-Vs/high-Vp/Vs signature that overlaps the shallowly dipping to horizontal reflective fabrics suggests the crust of the northern NCC margin has undergone considerable reworking through lower-crustal-stretching assisted melt migration and mixing since the late-Paleozoic to Mesozoic era. The process probably involved crust-mantle interaction and thus resulted in a compositionally modified ancient crustal basement. On the contrary, the southeastern Altaids domain manifests crustal complexity in compositions and structures inferred to be indicative of a juvenile crust of the Phanerozoic accretionary orogen. Our results provide deep physical-property constraints that shed new light on the crustal evolution of a complex craton margin.","PeriodicalId":507754,"journal":{"name":"National Science Review","volume":"2 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2024-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"National Science Review","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1093/nsr/nwae171","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0

Abstract

The phase of secular evolution of continents is manifested as the degree of compositional differentiation, modification, and maturation of continental crusts, which is vital in understanding the mechanism of continental evolution but is difficult to quantify. Here we use integrated passive- and active-source seismic profiling to conduct joint analysis and inversion and derive Vs and Vp/Vs section models across the North China craton (NCC) to southeastern Altaids boundary zone that bears a tectonic transition from a reworked ancient craton margin to a Phanerozoic accretionary orogen. We systematically exploited the imaged multiple physical properties as precise and delicate proxies to constrain the compositional architecture in the crust across this important tectonic transition subject to various crustal evolutional phases. Our Vs and Vp/Vs imaging, together with the existing isotopic data, characterizes the Yin Shan-Yan Shan belt as the northern NCC margin with layered homogeneous compositions that point to an evolved crust. However, the lower-crustal low-Vs/high-Vp/Vs signature that overlaps the shallowly dipping to horizontal reflective fabrics suggests the crust of the northern NCC margin has undergone considerable reworking through lower-crustal-stretching assisted melt migration and mixing since the late-Paleozoic to Mesozoic era. The process probably involved crust-mantle interaction and thus resulted in a compositionally modified ancient crustal basement. On the contrary, the southeastern Altaids domain manifests crustal complexity in compositions and structures inferred to be indicative of a juvenile crust of the Phanerozoic accretionary orogen. Our results provide deep physical-property constraints that shed new light on the crustal evolution of a complex craton margin.
查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
华北-阿尔泰过渡带地壳成分结构的制约因素及其对克拉通边缘再加工的影响
大陆的世俗演化阶段表现为大陆地壳的成分分化、改造和成熟程度,这对理解大陆演化机制至关重要,但难以量化。在这里,我们利用综合被动源和主动源地震剖面进行联合分析和反演,得出了华北克拉通(NCC)至阿尔泰群岛东南边界带的Vs和Vp/Vs剖面模型,该边界带承担着从再造古克拉通边缘到新生代增生造山运动的构造过渡。我们系统地利用所成像的多种物理性质作为精确而精细的代用指标,对这一重要构造过渡区内受不同地壳演化阶段影响的地壳成分结构进行了约束。我们的Vs和Vp/Vs成像,以及现有的同位素数据,将阴山-燕山带描述为具有层状均质成分的北部NCC边缘,指向演化的地壳。然而,下地壳低Vs/高Vp/Vs特征与浅倾至水平的反射织构重叠,表明自晚古生代至中生代以来,北NCC边缘的地壳通过下地壳拉伸辅助熔体迁移和混合经历了相当大的再加工。这一过程很可能涉及地壳与地幔的相互作用,从而形成了成分改变的古地壳基底。相反,阿尔泰斯域东南部的地壳在成分和结构上表现出复杂性,推断为新生代增生造山运动的幼年地壳。我们的研究结果提供了深层物理属性约束,为复杂克拉通边缘的地壳演化提供了新的启示。
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 去求助
来源期刊
自引率
0.00%
发文量
0
期刊最新文献
Nuptials captured in the time capsule Adaptive evolution of traits for parasitism and pathogen transmission potential in bat flies Mechanics guides the design of high-performance switchable adhesives High-voltage aqueous zinc ion batteries with conversion-type anode and modified electrolyte Stretchable fiber strain sensors for wearable biomonitoring
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1