Summary
Three-dimensional crustal-scale electrical conductivity model for the Southeast Missouri Iron Province, USA. Inverse solution was found using ModEM.
Quicklinks
Description
| Name | SMIP-MT |
| Title | Southeast Missouri Iron Province USA 3D Crustal Electrical Conductivity Model |
| Type | 3-D Electrical Conductivity Earth Model |
| Units | log10 electrical conductivity, in Seimens/meter |
| Year | 2022 |
| Data Revision | r0.0 (revision history) |
| Short Description | Three-dimensional crustal-scale electrical conductivity model for the Southeast Missouri Iron Province, USA. Inverse solution was found using ModEM. Inversion methodology described in the supplemental material of Murphy et al. (2022). The model has been re-gridded to lat/lon. |
| Authors: | Benjamin S. Murphy, Geological Hazards Science Center, Geomagnetism Program, U.S. Geological Survey, Golden, CO, 80401, USA [now at Murphy Geo Consulting, LLC] Jan Marten Huizenga, Faculty of Environmental Sciences and Natural Resource Management, Norwegian University of Life Sciences, P.O. Box 5003, NO-1432, Ås, Norway Paul A. Bedrosian, Geology, Geophysics, and Geochemistry Science Center, U.S. Geological Survey, Denver, Colorado 80225, USA |
| Reference Model | N/A |
| Prior Model | None |
| Inversion Software | Modular System for Electromagnetic Inversion, Egbert and Kelbert (2012) |
| Model Download | SMIP.MT.Murphyetal2022.conductivity.r0.0.nc (see metadata) is the model in netCDF 3 Classic format. SMIP-MT.ModelBundle.zip is the model in its original format |
| Model Home Page | None |
| Depth Coverage | 0 to 100 km depth |
| Area | Southeastern Missouri, USA (36.2° to 38.4° latitude, -92.4° to -89.0° longitude) |
| Data Set Description | Model created by inverting full impedance tensors and vertical magnetic field transfer functions (period range ~ 1 – 1000 s) from 90 broadband and long-period MT stations covering the Southeast Missouri Iron Province. |
Citations and DOIs
To cite the original work behind this Earth model:
- Murphy, B.S., Huizenga, J.M., and Bedrosian, P.A., (2022). Graphite as an electrically conductive indicator of ancient crustal-scale fluid flow within mineral systems. Earth and Planetary Science Letters 594: 117700. https://doi.org/10.1016/j.epsl.2022.117700
To cite IRIS DMC Data Products effort:
- Trabant, C., A. R. Hutko, M. Bahavar, R. Karstens, T. Ahern, and R. Aster (2012), Data Products at the IRIS DMC: Stepping Stones for Research and Other Applications, Seismological Research Letters, 83(5), 846–854, https://doi.org/10.1785/0220120032.
DOI for this EMC webpage: https://doi.org/10.17611/dp/emc.2024.smipmtmurphy.1
References
- Gary D. Egbert, Anna Kelbert, Computational recipes for electromagnetic inverse problems, Geophysical Journal International, Volume 189, Issue 1, April 2012, Pages 251–267, https://doi.org/10.1111/j.1365-246X.2011.05347.x
Credits
- r0.0 model provided by Benjamin S. Murphy.
Revision History
revision r0.0: uploaded October 1, 2024.
Timeline
- 2024-10-02
- r0.0 online
