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本文根据3个钻孔重矿物的垂向变化,将浙江沿岸第四纪地层划分为4～17层。黄铁矿、角闪石、绿帘石、金属矿物、菱铁矿、片状矿物在第四纪地层特别是在晚更新世以来的沉积物中较富集,而金红石、锆石、石、电气石、石榴石等含量较低。通常重矿物含量变化明显的地段即地层分层界线之所在。这与岩性、古生物、~(14)C测年的结果大体一致。全新世地层发育基本完好。此外,本文对重矿物组合类型与横向地层对比、沉积环境物质来源及地化环境之关系也作了初步探讨。
Based on the vertical changes of three heavy minerals in the borehole, the Quaternary stratigraphy of Zhejiang coast is divided into 4 ~ 17 layers. Pyrite, amphibole, epidote, metallic minerals, siderite, and tabular minerals are more abundant in Quaternary strata, especially since the late Pleistocene, while rutile, zircon, Tourmaline, garnet and other content is lower. Usually heavy mineral content of the lot changes in the strata that stratification boundaries. This is consistent with the results of lithology, paleontology and ~ (14) C dating. Holocene stratigraphic development is basically intact. In addition, the paper also discussed the relationship between types of heavy minerals and horizontal strata, sources of sedimentary environment material and geo-environment.