Structural Characteristics of Feldspar from Holocene Volcanic Eruptive Rock on the Tianfeng Profile in Tianchi and Their Geological Implicationsoft-com:office:office" />
详细信息
- 责任者：Zhang Bingliang (Institute of Geology ; China Earthquake Administration ; Beijing 100029 ; China) ; Zhao Bo
- 刊名：Seismology and Geology
- 出版年：2009
- 卷期：31(4)
- 关键词：全新世 ; Holocene ; 火山喷出物 ; ejecta
- 页码：p.628-638
- 图表：10 illus., 3 tables, 15 refs.
- 分类号：0801
- issnNo：ISSN0253-4967
- isbnNo：CN11-2192/P
摘要
The authors have studied the surface features and structural state of the feldspar from the Holocene volcanic eruptive rock on the Tianfeng profile using data from observations under scanning electron microscope and analysis of X-ray diffraction. On this profile black pumice appears at the top and darkgrey pumice is present at the bottom. The result shows that the feldspar in these pumice rocks has fresh surface, with slightly weathering for individual cases, and occasionally seen as non-crystalline floc of varied thickness at concaves on its grain surface.