کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4731679 | 1356817 | 2011 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: 3-D velocity structure of Damavand volcano, Iran, from local earthquake tomography 3-D velocity structure of Damavand volcano, Iran, from local earthquake tomography](/preview/png/4731679.png)
Damavand volcano is a large intraplate Quaternary composite cone overlying the active fold and thrust belt of the Central Alborz Mountains in northern Iran. In this study, we present the first 3-D P-wave velocity model of the upper crust for the Central Alborz region using local earthquake data provided by the Iranian Seismic Telemetry Network. The final P-wave velocity model reveals several high and low velocity anomalies in the upper 30 km of the crust. A low velocity zone parallel to the main faulting system is imaged at a depth of 15 km. A relatively high velocity body to the north of the Damavand summit down to a depth of 20 km is resolved, which may represent the elderly crystallized magma chamber. Right below the Damavand cone, a low velocity area to the depth of 7 km can be interpreted as a shallow magma chamber.
► 3-D P-wave velocity structure of the Damavand quaternary volcano is modeled.
► A shallow low velocity zone below the cone shows the magma chamber of the volcano.
► A high velocity zone NE of the volcano is an older, crystallized magma chamber.
► Along the major fault in the area, a linear low velocity zone is observed.
Journal: Journal of Asian Earth Sciences - Volume 42, Issue 6, 11 November 2011, Pages 1091–1096