摘要
本文统计分析了南极普里兹湾陆坡区一个柱样（ＮＰ９５１）１３个层位的石英颗粒的形态和表面结构。石英表面呈现出强烈的冰川运动和较弱的化学溶蚀－沉淀作用留下的表面特征，表明该沉积物主要是处于低能海洋环境中的冰碛物。石英颗粒因化学溶蚀－沉淀作用形成的组合表面特征的定量统计结果与矿物的Ｘ射线衍射和微体古生物的分析结果相对应，能较好地解释该海区经历的沉积环境和古气候变化。
Aquantitatively statistical analysis about the shapes and surface textures of quartz grains from 13 level samples of a core (NP951) collected from a continental slope in the Antarctic Prydz Bay were made in this study.The quartz grains show surface textures resulted from a strong glacial movement and a weaker chemical erosion precipitation,indicating the sediments are mainly glacial drifts under a lower energy marine environment.The obtainted quantitatively statistical results of the assemblages of the quartz grain surface textures formed by the chemical erosion precipitation are well correlated to the analytical results of mineral X ray diffraction and micropaleontology and can better explain the changes of sedimentary environment and paleoclimate which the marine zone concerned underwent.
出处
《极地研究》
CAS
CSCD
1997年第2期91-104,共14页
Chinese Journal of Polar Research
基金
国家海洋局极地考察办公室"八五"南极研究资助
中国科学院大型仪器功能开发项目中国科学院广州分院分析测试基金
