Grain-Size Characteristics of Pyroclastics in Changbaishan Mountain Area

• 责任者：Zhao Bo (Institute of Geology ; China Earthquake Administration ; Beijing 100029 ; China) ; Xu Jiandong
• 刊名：Seismology and Geology
• 出版年：2010
• 卷期：32(2)
• 关键词：火山碎屑岩 ; pyroclastics ; 长白山 ; Changbai Mountains
• 页码：p.233-243
• 图表：4 illus., 1 table, 17 refs.
• 分类号：0801
• issnNo：ISSN0253-4967
• isbnNo：CN11-2192/P

Through field investigation of pyroclastic deposit sections in the study area, the authors systematically collected different pyroclastic deposit samples at different sites, and then calculated the grain size parameters and plotted out the probability cumulative curves of all samples in the laboratory. The results indicate that the pyroclastic samples from different origins can be distinguished by characteristic grain-size diagrams. In terms of texture, most pyroclastic deposits show similar characters.