The use of X-ray radiographic methods in studying sedimentary properties and rates of sediment accumulation
The use of X-ray radiographic methods in studying sedimentary properties and rates of sediment accumulation
复制标题
X射线照相方法在研究沉积物性质和沉积物堆积速率中的应用
DOI：
10.1007/bf00028429
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发表时间：
1983
期刊：
影响因子：
2.6
通讯作者：
V. Axelsson
中科院分区：
文献类型：
--
作者：
V. Axelsson
未挤压沉积物岩心的X射线照片用于记录和解释原生和次生沉积结构，并用于不同岩心之间同步纹层的对比。根据沿着射线照片记录的胶片密度，计算了堆积密度、含水量和孔隙比的垂直变化以及固体随沉积深度的增加。用于研究沉积物性质的X射线照相技术是快速和非破坏性的。在研究沉积物覆盖层的最上部以及沉积物再分布和沉积物积累过程时，这项技术特别有价值。目前正在瑞典的几个湖泊和沿海海湾进行研究，利用单射线照相和立体射线照相对海底和沉积物类型进行分类，解释沉积环境的变化，并计算过去和现在的沉积物积累速度。
X-ray radiographs of unextruded sediment cores are used for the documentation and the interpretation of primary and secondary sedimentary structures, and for the correlation of synchronous laminations between different cores. The vertical variation in bulk density, water content and void ratio, and the increase of solids with increasing sediment depth are calculated from the recorded film density along the radiographs. The X-ray radiographic technique for the study of sedimentary properties is fast and non-destructive. The technique is especially valuable when studying the uppermost part of the sediment cover and the processes of sediment redistribution and sediment accumulation. Studies are being undertaken in several Swedish lakes and coastal bays, where mono- and stereoradiographs are being used to classify bottom and sediment types, to interpret changes in the depositional environment, and to calculate past and present rates of sediment accumulation.