文档介绍：杭州湾附近海底柱状岩心重矿物分布研究
孟建国鲁东大学中青年科研基金项目(33211)
孟建国,男,1986年生,山东章丘人,山东省地震局,助理工程师;
;刘洪瑞1;金秉福2;苗丽华3
(1、山东地震局泰安基准地震台山东泰安 271000;2、鲁东大学地理与规划学院山东烟台 264025;3、山东经济学院经济与城市管理学院山东济南 250000)
摘要: 对东海沿岸陆架CJ08-630、CJ08-923、CJ08-1185三个柱状岩心56个重矿物样品63-125μm粒级重矿物的研究表明,重矿物种类有56种,%;平均含量较低,%,;矿物组成以闪石类、帘石类、辉石类、片状矿物、自生黄铁矿及金属矿物磁铁矿、褐铁矿等等为主。重矿物来源复杂多样,包括陆源、火山、自生等各种来源的矿物。其中沿岸河流输入物是主要陆源矿物来源;此外还有沿岸和岛屿等的剥蚀物、冲刷物。沉积环境是影响重矿物分布的主要因素。
关键词:柱状岩心;重矿物;分布特征;物质来源;沉积环境;杭州湾
Distribution Research of the Three cylindrical core of Heavy minerals in the Hangzhou Bay
Meng Jianguo1 Liu Hongrui1 Jin Bingfu2 Miao Lihua3
(1、Benchmark Seismological Station Of Taian,Earthquake Administration of Shandong Province Taian, Shandong, 271000 China; of Geography and Planning; Ludong University; Yantai 264025 China;Economic Management College and City; Shandong Economics College; Jinan Shandong; 250000 China)
Abstract: On the coast of the East China Sea continental shelf CJ08-630, CJ08-923, CJ08-1185 three cylindrical core 56 heavy mineral samples 63 ~ 125 μ m particle heavy mineral studies show: Heavy minerals, 56 types of species, the highest content of up to percent; average levels of low, at %. To amphibole position category, curtain-type, stone-like, flaky mineral, pyrite and self-metallic mineral ite, limonite, and so on the main. Heavy mineral sources plex and varied, including land-based sources, volcanoes, since a variety of sources, such as the Health and minerals. Which enter rivers along the coast of the main sources of land-based sources of minerals; There is also the coast and islands of the erosion, erosion of. Sedimentary environment is the impact of heavy mineral distribution of the main factors.
Key words: cylindrical core heavy minerals; distribution; material source of sedimentary environment ;Hangzhou Bay
海底沉积物中的矿物组分,记录了沉积物的来源、搬运和沉积过程以及沉积环境等多种信息[1-4]。研究表明重矿物既能反映物源区的母岩性质,又能反映沉积物在运移过程中的分异作用[5]。通过对其中重矿物组合以及某些重矿物的比值、标志矿物等参数的研究,可以有效地进行物源识别,再造沉积环境[6, 7]。前人曾从统计分析看控制东海重矿物分布的因素