...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Universal Journal of Geoscience >Sedimentological Study and Heavy Mineral Analysis of Sediment Samples from Well-S, Niger Delta, Nigeria
【24h】

Sedimentological Study and Heavy Mineral Analysis of Sediment Samples from Well-S, Niger Delta, Nigeria

机译：尼日利亚尼日尔三角洲S-S井的沉积学研究和重矿物分析

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Sedimentological study and petrographic analyses were carried out on thirty ditch cutting samples from well-S, Niger Delta, Nigeria, with the aim of determining the provenance and depositional environment of the sediments. The samples were subjected to soxhlet extraction for the removal of soluble organic matter from them and particle size analyses using Pipette and Emery sedimentation techniques in order to determine the grain size distribution of the sediments. Separation of heavy of mineral from the samples was done with the aid of bromoform to enable petrographic analyses of the heavy mineral suite, under the polarising microscope. The data obtained from the grain size analysis were used in preparing histograms, from which some simple statistical parameters were derived. Graphic mean values obtained range between 0.74 and 2.64 ?, which implies that the sediments are predominantly fine-medium grained. The inclusive standard deviation values ranges from 0.53 to 1.24 ?, indicating that the sediments are moderately well sorted to moderately sorted. Inclusive graphic skewness values of 0.29 to 0.70 indicate that the sediments ranges from finely skewed to strongly finely skewed and the graphic kurtosis values of 0.61 to 1.54 shows that the sediments are predominately very platykurtic which implies a low energy environment of deposition. The polymodal nature displayed by the histograms indicates that the sediments have been derived from various sources. The study concluded that the sediments were deposited in a fluvial environment. It also established that the sediments originate from metamorphic and acid igneous rocks of the Nigeria Basement Complex and mineralogically mature to sub-mature.
机译：为了确定沉积物的来源和沉积环境，对尼日利亚尼日尔三角洲S井的30个沟渠切割样品进行了沉积学研究和岩石学分析。对样品进行索氏提取，以从样品中去除可溶性有机物，并使用移液器和金刚砂沉降技术进行粒度分析，以确定沉积物的粒度分布。借助溴仿进行样品中重矿物的分离，以在偏光显微镜下对重矿物组进行岩石学分析。从粒度分析获得的数据用于准备直方图，从中得出一些简单的统计参数。获得的图形平均值在0.74至2.64？之间，这意味着沉积物主要是中细颗粒。包括在内的标准偏差值在0.53至1.24？的范围内，表明沉积物分类为中等至中等。包含0.29至0.70的图形偏斜度值表示沉积物的范围从精细偏斜到强烈精细偏斜，而图形峰度值0.61至1.54表明，沉积物主要是极板状的，这意味着沉积的能量环境较低。直方图显示的多峰性质表明沉积物来自各种来源。研究得出的结论是，沉积物沉积在河流环境中。研究还确定，这些沉积物来自尼日利亚基底复合体的变质和酸性火成岩，并在矿物学上成熟至次成熟。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号