| 林建绥,王锦荣,何环银,翁德庆,许峰,黄艳娜,刘红玲.莆田市南日水道 A区块海砂矿地质特征及成因初探[J].矿产勘查,2025,16(4):813-821 |
| 莆田市南日水道 A区块海砂矿地质特征及成因初探 |
| Preliminary exploration of geological characteristics and genesis of sea sand mine in block A of Nanri Waterway in Putian City |
| 投稿时间：2023-12-11 |
| DOI：10.20008/j.kckc.202504012 |
| 中文关键词: 南日水道 海砂 地质特征 成因 |
| 英文关键词: Nanri Waterway sea sand geological characteristics genesis |
| 基金项目:本文受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。 |
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| 中文摘要: |
| 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。 |
| 英文摘要: |
| As a part of the Taiwan shoal, an important area rich in sea sand resources in China, the sea sand re-sources contained in the Nanri Waterway are of great significance for solving the resource gap of land reclamation inPutian. Based on the comprehensive geophysical exploration and drilling results of the mining area in the earlystage, this paper studies and analyzes the metallogenic geological characteristics and genesis of the mining area. Itis preliminarily believed that: This deposit is located in the argill-bearing fine-grained quartz sand of the Marineaccumulation layer of the Changle Formation in the middle to late Holocene of the Quaternary period, and has mul-tiple typical horizontal layered structures and the characteristics of alternating thick and thin layers. The ore sandmeets the quality requirements of sea sand ore for backfilling. Formed in a sedimentary environment where the wa-ter dynamics conditions changed from deep to shallow and from weak to strong, the ore-forming materials mainlycame from the erosion of the coast and the base and the input of the banks and rivers. The development of a largenumber of acidic to moderately acidic intrusive rocks and volcanic rocks of the Yanshanian period in the region pro-vided a good material basis. The research results can provide a geological theoretical basis for the exploration pros-pects of sea sand resources in this area. |
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