化工矿产地质2019，Vol.41Issue(2)：111-116,6.
清江盆地洋湖凹陷岩盐矿床A1孔泥岩段硼同位素组成特征研究
Boron isotope compositions study of mudstone in drill hole A1,Yanghu Depression,Qingjiang Basin
汤凯 1王春连 2王九一2
作者信息
- 1. 长江大学地球物理与石油资源学院,武汉 430100
- 2. 中国地质科学院矿产资源研究所,自然资源部成矿作用与资源评价重点实验室,北京 100037
- 折叠
摘要
Abstract
In recent years, good progress has been made in the study of boron isotopes in indicating sedimentary environment and provenance. The relationship between δ11B value and provenance, sedimentary environment and climate was studied by means of mineral composition, boron content and XRD diffraction experiments and measurement of boron isotopes by thermoelectric ionization mass spectrometry.The factors affecting boron isotopic fractionation of salt rock deposits in Qingjiang Basin are analyzed. It is found that multiple sources may be one of the reasons for the change of δ11B, and the preferential adsorption of 10B by clay minerals leads to the decrease of δ11B value. At the same time, the change of salt mineral sequence and the decrease of Illite indicate that the overall climate change in this period is from drying and cold to warmth and damp, which may lead to the change of provenance with the diversion of rivers, thus affecting the change of δ11B value.关键词
硼同位素/泥岩/清江岩盐矿床Key words
Boron isotope/Mudstone/Qingjiang salt deposit分类
天文与地球科学引用本文复制引用
汤凯,王春连,王九一..清江盆地洋湖凹陷岩盐矿床A1孔泥岩段硼同位素组成特征研究[J].化工矿产地质,2019,41(2):111-116,6.
