A preliminary study on thermoluminescence characteristics of sediments from the North Pacific

Thirty-eight surficial deposit samples were collected from the equatorial North Pacific, and the natural thermoluminescence (TL) characteristics of both bulk and clay fraction samples (<2 μm fractions) were studied by the FJ427-A1 automatic TL Dosimeter for the first time. With the measurements of clay mineral composition, element composition by XRD and ICP, the correlations between TL intensity and sedimentary environment proxies were analyzed, such as water depth, ratio of FeO to Fe2O3 contents, LOI, and major clay mineral concentration, and it was found the bulk sample’s TL signal was stronger than the clay ones. Usually, increase in the clay components may result in the decrease of TL intensity. From the shape of TL curves, the pelagic sediments can be divided into two groups: the majority group has two glow peaks, in general, the first peak is broad and flat, but the second narrow and sharp; the minority group only has a single peak because the first is absent. The peak centers of TL curves are almost fixed, falling in the temperature sections 230~260 and 390~405 ℃ respectively. Lorentz model packed in the Origin 7.5 was chosen to deal with the TL curves. From the processing results, three parameters (H, C and A), corresponding to the height, center, and kurtosis of TL curve, were obtained to describe the curve characteristics. The correlations between TL curve parameters and sedimentary environment proxies were also calculated. On the basis of the above work, the relationship between TL characteristics and sediment type, mineral composition, sedimentary environment of surface sediments was discussed in the study area, and a conclusion is: sediments from the environment of shallower water, higher organic contents and weaker reductivity have stronger TL signals.     

《地球科学与环境学报》约稿函

尊敬的各位专家学者:《地球科学与环境学报》(以下简称《学报》)自1979年创刊以来,得到了各位专家的支持,使期刊得到了快速发展。《学报》系地学综合性权威学术期刊,刊登的主要内容有基础地质与矿产地质、水资源与环境、工程地质、应用地球物理和地球信息科学等。据中国科学技术信息研究所2012年版《中国科技期刊引证报告(核心版)》,《学报》影响因子为0.887,他引率为0.80。     

《地球科学与环境学报》约稿函

尊敬的各位专家学者:《地球科学与环境学报》(以下简称《学报》)自1979年创刊以来,得到了各位专家的支持,使期刊得到了快速发展。《学报》系地学综合性学术期刊,刊登的主要内容有基础地质与矿产地质、水资源与环     

《地球科学与环境学报》投稿须知

为了全面扩大《地球科学与环境学报》的学术影响力,便于审稿和对录用稿件的编辑加工,本刊向作者提出如下要求,期望得到广大作者的配合与协助。1.来稿必须包括以下项目:题名(尽量不超过20字)、作者姓名、作者单位、摘要(400字左右)与关     

《地球科学与环境学报》约稿函

尊敬的各位专家学者:《地球科学与环境学报》(以下简称《学报》)自1979年创刊以来,得到了各位专家的支持,使期刊得到了快速发展。《学报》系地学综合性学术期刊,刊登的主要内容有基础地质与矿产地质、水资源与环境、地质工程、应用地球物理和地球信息科学等。据中国科学技术信息研究所2011年版《中国科技期刊     

核技术应用现状及展望

本文在简要论述核技术在国内外应用、研究现状的基础上，对今后的研究方向进行了讨论。通过大量实例说明：核技术在地学、环境学等相关领域具有广阔的应用前景。     

环境水文地质学的最新发展与今后趋向

环境水文地质学是从七十年代到八十年代，在我国逐渐发展而形成的一门新学科，也是在地质科学领域内，最新发现的若干分支学科之一。本文概略论述了环境水文地质学的基本概念与研究范畴，重点介绍了区域环境水文地质、污染环境水文地质、水文环境地球化学，以及地下水资源开发负环境效应等方面研究的最新成就，提出了这一新学科的发展趋向与今后任务。