Characteristics of clay minerals in sediments of Hangzhou Bay since the Late Pleistocene and their paleoenvironmental significance(晚更新世以来杭州湾沉积物黏土矿物特征及其古环境意义)

Characteristics of clay minerals in sediments of Hangzhou Bay since the Late Pleistocene and their paleoenvironmental significance(晚更新世以来杭州湾沉积物黏土矿物特征及其古环境意义)

通过对杭州湾南岸HZW1907长84 m及甬江口YJ19-02长9 m柱状样进行粒度分析、X射线衍射（XRD）分析，研究了沉积物粒度变化、黏土矿物特征，探讨杭州湾地区晚更新世以来源区风化程度、水动力条件变化、物质来源及环境演变情况。根据岩性粒度特征及黏土矿物变化规律，将HZW1907柱状样划分为4个沉积阶段：阶段1（0~26 m）、阶段2（26~49 m）、阶段3（49~70 m）、阶段4（70~84 m）。阶段4和3处于晚更新世至早全新世，沉积物以粉砂、砂质粉砂、粉砂质砂为主，处于湖泊河床相、泛滥平原相沉积，水动力条件较强。阶段4黏土矿物组合较复杂，高岭石、蒙皂石占比异常高，阶段3以伊利石—...

Full description

Bibliographic Details
Main Authors: HUANGDongqin(黄冬琴), GAOQin(高秦), LIZilong(厉子龙), YANGShihang(杨师航), HONGChen(洪晨), PiotrowskiA M(), SUNMiaojun(孙淼军), LIChuan(李川)
Format: Article
Language:zho
Published: Zhejiang University Press 2022-09-01
Series:Zhejiang Daxue xuebao. Lixue ban
Subjects:
杭州湾
黏土矿物
物质来源
古环境
晚更新世
Online Access:https://doi.org/10.3785/j.issn.1008-9497.2022.05.010

Similar Items

Similar Items