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Mineralization Study by Squeezing of Northward Indian Plate in the Gangdese Metallogenic Belt

Session: Recent Development in Ultra-Dense Seismic Arrays with Nodes and Distributed Acoustic Sensing [Poster]

Type: Poster

Date: 4/20/2021

Presentation Time: 04:15 PM Pacific

Description: 

The Gangdise metallogenic belt in the southern Tibet Plateau is well studied for mineralization in mining scale. It is a breakthrough discovery for Jiama copper-polymetallic ore deposit in the Gangdise metallogenic belt. The deep structure of Jiama ore deposit and ore-forming system is still unclear.

Compared with active exploration methods, receiver function (RF) imaging based on a dense seismic array can provide the more detailed crust-mantle discontinuity (Moho) structure with high resolution and detection accuracy. We applied P-wave RF imaging method to a dense array with 102 geophones and obtained the Moho topography beneath the Jiama ore deposit. Two parallel dense arrays are arranged in the north and south of the study area with station spacing of ~500m.The Common Conversion Point (CCP) stacking technique is used to image the crustal structure along the profiles. The south profile is about 40km away from the north profile, and the depth and deformation of Moho are different widely under the two profiles. It suggests that the different Moho structural features influence ore-forming and deposit.

Presenting Author: Wei Wu

Student Presenter: Yes

Authors