| 地壳上地幔地震波速度结构和岩石学解释综述 |
| 点此下载全文 |
| 引用本文：.2004.Seismic Wave Velocity Structure of Crust and Upper Mantle and Petrological Interpretation[J].Mineral Deposits,23(Z):13~18 |
| Hits: 1663 |
| Download times: 1913 |
|
| 基金项目:地质大调查综合研究项目“中国成矿体系与成矿评价”（K1.4） |
|
| 中文摘要:文章归纳了地壳上地幔各种岩石矿物的速度特征。长英质岩石的上地壳具有较低的 P波速度；各类花岗质岩石到云英闪长质片麻杂岩组成的中部地壳P波速度为 6.4～6.6 km/s；由石榴石、角闪石、辉石或橄榄石组成的下陆壳P波速度最大，达到了6.8～7.0 km/s，当 P波速度大于7.3 km/s时则应有相当高的榴辉岩和超镁铁岩的高速组分。在地壳下面的岩石圈地幔主要由橄榄岩质岩石（超镁铁岩）组成，地震波纵波速度达到8.0 km/s以上。 |
| 中文关键词:地震波速度 岩石矿物 地壳上地幔 综述 |
| |
| Seismic Wave Velocity Structure of Crust and Upper Mantle and Petrological Interpretation |
|
|
| Abstract:The authors sum up the P-wave velocities of rock-forming minerals in the crust and the upper mantle. The felsic rocks that compose the upper crust have lower P-wave velocity, the P-wave velocity of the granitic and greisen-dioritic gneiss complexes that compose the middle crust is 6.4~6.6 km/s, and the lower crust rocks composed of garnet, amphibole, pyroxene and olivine have the highest P-wave velocity: 6.8~7.0 km/s. When P-wave velocity is higher than 7.3 km/s, there must exist high velocity components like eclogites and ultramafic rocks. The velocity of peridotite that makes up lithosphere mantle (ultramafic rocks) is higher than 8.0 km/s. |
| keywords:seismic velocity, rock-forming minerals, crust and mantle |
| View Full Text View/Add Comment Download reader |
