摘要
南日水道作为中国重要的海砂资源富集区——台湾浅滩的一部分,其所蕴藏的海砂资源对于解决莆田填海造地资源缺口具有重要的意义。本文利用矿区前期的综合物探和钻探等成果,对矿区成矿地质特征和成因进行了研究分析,初步认为:该矿床赋存于第四纪中—晚全新世长乐组海积层的含泥中细粒石英砂中,具多层典型的水平层状构造和厚薄相间特征;矿砂符合回填用海砂矿质量要求;形成于由深变浅、水动力条件由弱变强的沉积环境下,成矿物质主要来源于海岸及基底侵蚀和岸边河流的输入,而区域上发育大量的燕山期酸性—中酸性侵入岩和火山岩则提供了良好的物质基础。该研究成果可为该区域海砂资源找矿远景提供地质理论依据。
As a part of the Taiwan shoal,an important area rich in sea sand resources in China,the sea sand resources contained in the Nanri Waterway are of great significance for solving the resource gap of land reclamation in Putian.Based on the comprehensive geophysical exploration and drilling results of the mining area in the early stage,this paper studies and analyzes the metallogenic geological characteristics and genesis of the mining area.It is preliminarily believed that:This deposit is located in the argill-bearing fine-grained quartz sand of the Marine accumulation layer of the Changle Formation in the middle to late Holocene of the Quaternary period,and has multiple typical horizontal layered structures and the characteristics of alternating thick and thin layers.The ore sand meets the quality requirements of sea sand ore for backfilling.Formed in a sedimentary environment where the water dynamics conditions changed from deep to shallow and from weak to strong,the ore-forming materials mainly came from the erosion of the coast and the base and the input of the banks and rivers.The development of a large number of acidic to moderately acidic intrusive rocks and volcanic rocks of the Yanshanian period in the region provided a good material basis.The research results can provide a geological theoretical basis for the exploration prospects of sea sand resources in this area.
作者
林建绥
王锦荣
何环银
翁德庆
许峰
黄艳娜
刘红玲
LIN Jiansui;WANG Jinrong;HE Huanyin;WENG Deqing;XU Feng;HUANG Yanna;LIU Hongling(The Second Geological Exploration Institute of China Metallurgical Geology Bureau,Fuzhou 350108,Fujian,China)
出处
《矿产勘查》
2025年第4期813-821,共9页
Mineral Exploration
基金
中国冶金地质总局科研项目“末次冰盛期以来边缘海沉积物有机碳格局及来源解析——以南日水道为例”(CMGBKY202204)资助。
关键词
南日水道
海砂
地质特征
成因
Nanri Waterway
sea sand
geological characteristics
genesis
作者简介
第一作者:林建绥,男,1989年生,工程师,主要从事地质矿产调查工作,E-mail:583700728@qq.com。
