The Augustine magmatic system as revealed by seismic tomography and relocated earthquake hypocenters from 1994 through 2009

2011 ◽  
Vol 116 (B9) ◽  
Author(s):  
Ellen M. Syracuse ◽  
Clifford H. Thurber ◽  
John A. Power
Keyword(s):  
Seismic Tomography ◽  
Magmatic System

Igneous evolutions across the Ivrea crustal section: the Permian Sesia Magmatic System and the Triassic Finero intrusion and mantle

2014 ◽  
Vol 6 (2.2) ◽  
pp. 1-98 ◽  
Author(s):  
Maurizio Mazzucchelli ◽  
James E. Quick ◽  
Silvano Sinigoi ◽  
Alberto Zanetti ◽  
Tommaso Giovanardi
Keyword(s):  
Magmatic System

scholarly journals Zircon geochronology suggests a long-living and active magmatic system beneath the Ciomadul volcanic dome field (eastern-central Europe)

2021 ◽  
Vol 565 ◽  
pp. 116965
Author(s):  
R. Lukács ◽  
L. Caricchi ◽  
A.K. Schmitt ◽  
O. Bachmann ◽  
O. Karakas ◽  
...  
Keyword(s):  
Central Europe ◽  
Zircon Geochronology ◽  
Magmatic System ◽  
Volcanic Dome

scholarly journals Geophysical and analytical determination of overstressed zones in exploited coal seam: a case study

2021 ◽  
Author(s):  
Dariusz Chlebowski ◽  
Zbigniew Burtan
Keyword(s):  
Coal Seam ◽  
Wave Velocity ◽  
Seismic Tomography ◽  
Analytical Modeling ◽  
Coal Mines ◽  
Vertical Stress ◽  
P Wave ◽  
Rockburst Hazard ◽  
State Of Stress ◽  
P Wave Velocity

AbstractA variety of geophysical methods and analytical modeling are applied to determine the rockburst hazard in Polish coal mines. In particularly unfavorable local conditions, seismic profiling, active/passive seismic tomography, as well as analytical state of stress calculating methods are recommended. They are helpful in verifying the reliability of rockburst hazard forecasts. In the article, the combined analysis of the state of stress determined by active seismic tomography and analytical modeling was conducted taking into account the relationship between the location of stress concentration zones and the level of rockburst hazard. A longwall panel in the coal seam 501 at a depth of ca.700 m in one of the hard coal mines operating in the Upper Silesian Coal Basin was a subject of the analysis. The seismic tomography was applied for the reconstruction of P-wave velocity fields. The analytical modeling was used to calculate the vertical stress states basing on classical solutions offered by rock mechanics. The variability of the P-wave velocity field and location of seismic anomaly in the coal seam in relation to the calculated vertical stress field arising in the mined coal seam served to assess of rockburst hazard. The applied methods partially proved their adequacy in practical applications, providing valuable information on the design and performance of mining operations.

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