日本海地质构造特征  

THE CHARACTERISTICS OF GEOLOGICAL STRUCTURE IN JNPAN SEA

作　　者：刘福寿[1] 

机构地区：[1]国家海洋局第一海洋研究所,青岛266003

出　　处：《海岸工程》1995年第1期37-42,共6页Coastal Engineering

摘　　要：本文主要根据地质、池震、磁力、地热、重力等资料，分析了日本海的地质构造特征。日本海是一个广阔的边缘海，四周被大陆架所围。自东北至西南依次为日本海盆、大和海脊、大和盆地及对马海盆。大和海脊由陆完物质组成；盆地中心则以洋壳为底。热流值高而变率小，说明日本海是一个成熟的弧后盆地，扩张停止于中新世。日本海在更新世最低海面时，与大洋交换断绝，沉积物中合碳比较丰富，这是一个罕见的特征。The characteristics of geologicaI structure in Japan Sea sre elucidated in this paper,based on the data of geology, seismology, magnetism, geothermic, gravity, etc.Jppan Sea is a vast marginal sea and is surrounded by continental shelf. from NE toSW, there are Japan basin, Dahel ridge, Dahel basin and Duima basin. the Dahel ridgeconsists of continental crust. All basin consisto of oceanic crust, where geothermal val-ue is high and stable that mcans that Japan basin is a mature arc - back, its spreadingended in Miocene.The exchange between Japan Sea and ocean was cut off at lowest sea - level inPleistocene. the deposit abounds in carbon, which is a rare character

关 键 词：日本海 边缘海 地质构造 

分 类 号：P722.3[天文地球—海洋科学]