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着重研究了南黄海表层沉积物中0 063～0 25mm粒级的碎屑矿物组成。结果表明,矿物种类达50多种,轻矿物主要为长石、石英、云母等,重矿物主要为角闪石、绿帘石、云母、自生黄铁矿、磁铁矿、赤铁矿、石榴石、锆石等,重矿物主要分布于粉砂质泥和泥质粉砂沉积物中。依据主要矿物的含量和分布特征,将研究区划分为5个矿物组合区。各区矿物的组合类型与其所处的水动力条件、沉积环境密切相关,而碎屑矿物的种类又指示了沉积区的碎屑物质主要来源于江、河流域,基岩风化及改造沉积等。
Abstract：The composition of detrital minerals with grades of 0.0630.25 mm in the surfrace sediments in the South Yellow Sea was studied. The research result shows that the mineral species can be dividea into more than fifty types. The light minerals are mainly feldspar, quartz and mica etc. The heavy minerals are mainly amphibole, epidote, mica, autogeny pyrite, magnetite, hematite, garnet, and zircon etc, which are mainly distributed in the sediments of silty clay and lutaceous silt. According to the features of content and distribution of the main minerals, the research area is divided into five mineral combination provinces, which are controlled by hydrodynamic conditions and sedimentary environment. However, the detrital materials in the sedimentary areas are mainly derived from the rivers, bedrock weathering, and reworking sediment in the drainage areas.
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基本信息:
DOI：10.16562/j.cnki.0256-1492.2004.01.007
中图分类号:P578
引用信息:
[1]王红霞,林振宏,文丽,姜学钧,张志珣.南黄海西部表层沉积物中碎屑矿物的分布[J].海洋地质与第四纪地质,2004(01):51-56.DOI:10.16562/j.cnki.0256-1492.2004.01.007.
基金信息:
中国地质调查局"1∶100万南通幅海洋区域地质调查"项目[20001100011021]
2004-02-29
2004-02-29