黑龙江省嘉荫—牡丹江俯冲增生杂岩带地质特征、洋板块地层序列初步重建与构造演化  

Geological Characteristics,Preliminary Reconstruction of Oceanic Plate Stratigraphic Sequence and Tectonic Evolution of Jiayin-Mudanjiang Subduction and Hyperplasia Mixed Zone in Heilongjiang Province

作　　者：杜兵盈 刘宇崴 高洪岩 DU bingying;LIU Yuwei;GAO Hongyan(Heilongjiang Institute of Geological Science,Harbin 150036,China)

机构地区：[1]黑龙江省地质科学研究所,哈尔滨150036

出　　处：《黑龙江国土资源》2024年第9期65-75,共11页Heilongjiang land and Resources

摘　　要：我国东北地区以地块(或弧盆系)、俯冲增生杂岩带相间构造格局为特征,记录了古大洋的洋内、洋陆演化过程,其中的俯冲增生杂岩是古大洋扩张、增生到消亡过程的直接地质证据。黑龙江省中东部是研究古亚洲洋与古太平洋构造域转换与叠加演化的关键地区,位于佳木斯地块与松嫩地块间的嘉荫一牡丹江俯冲增生杂岩带为探讨该问题提供了关键切入点。笔者等通过对嘉荫一牡丹江俯冲增生杂岩带已有地质研究资料进行梳理,进一步总结了其物质组成为发育的基质和不同时代、性质的岩块,其中岩块形成时代为早二叠世一晚三叠世,具有洋中脊玄武岩、洋岛玄武岩或弧岩浆岩地球化学属性,而基质的形成时代为中二叠世一早侏罗世早期,并初步恢复了洋板块地层序列,重建了晚古生代一早中生代洋陆构造演化历史。The Northeast China is characterized by the structural pattern of plot(or arc basin system)and subduction and hyperplasia mixed zone,which records the evolution process of the ocean and land of the ancient ocean,among which the subduction complex is the direct geological evidence of the expansion,hyperplasia and extinction of the ancient ocean.The central and eastern part of Heilongjiang Province is the key area for studying the conversion and superposition evolution of the tectonic domain between the ancient Asian ocean and the ancient Pacific Ocean,the Jiayin-Mudanjiang subduction hyperplastic complex zone between Jiamusi plot and Songnen plot provides a key entry point to explore this problem.Through the Jiayin-Mudanjiang subduction hyperplasia complex zone existing geological research data,the author further summarizes the material composition of the rock consists of the developing matrix and the rocks of different ages and properties,the formation age of the rocks is from early Permian to late Triassic,with the geochemical properties of mid-ocean ridge basalt,ocean island basalt or arc magmatic rock,the formation time of the matrix is late Permian to early Jurassic,and the oceanic plate stratigraphic sequence is initially restored,and the tectonic evolution history of the late Paleozoic to early Mesozoic ocean and continent is reconstructed.

关 键 词：俯冲增生杂岩带 洋板块地层 晚古生代-早中生代 佳木斯地块 黑龙江省 

分 类 号：P53[天文地球—古生物学与地层学]