摘要
首次给出了河南登封—鲁山一带地壳出露剖面岩石高压条件下纵波速度V_p值的实验测定结果。样品分别采自古元古代的安沟群及新太古代的登封群和太华群。静态压力自常压至3000MPa变化。结果表明,岩石的纵波速与岩性关系密切。上、中地壳岩石的V_p 随压力的增加变化范围明显大于下地壳岩石,变质等级的增加伴随着V_p的明显增大,经温度影响校正后的V_p值与位于邻近地区的QB-1地震测深剖面的解释结果吻合很好。
The experimental study with room pressure to 3000MPa on Vp in rocks, sampled respectively from the Early Proterozoic Angou Group and the Archean Taihua Group in the exposed crustal section in Denfeng-Lushan region, Henan Province, indicates a close relation between the seismic velocity and the lithology. With the pressure increasing, the Vp in rocks from the imddle-upper crust increases more greatly than the Vp in the lower crustal rocks, and the increasing metamorphic grade also raises the Vp.The Vp values corrected by temperture effect is well coincident with the Vp values interpreted from the QB-1 profile in the vicinity of section.
出处
《地球科学（中国地质大学学报）》
EI
CSCD
北大核心
1994年第1期109-112,共4页
Earth Science-Journal of China University of Geosciences
基金
国家自然科学基金资助项目
关键词
地壳剖面
高压
地震波
岩石
速度
crustal section
static high pressure
seismic velocity
Denfeng- Lushan region
Henan Province.
