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e33338f
add small extension to get the edit on github button working
lheagy Nov 29, 2024
3634e16
update links
lheagy Nov 29, 2024
ba5d8ac
Revert "add small extension to get the edit on github button working"
santisoler Nov 29, 2024
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2 changes: 1 addition & 1 deletion README.md
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[![DOI](https://zenodo.org/badge/42916308.svg)](https://zenodo.org/badge/latestdoi/42916308)

This repository is the source for the open-textbook EM-GeoSci: https://em.geosci.xyz. This was the main textbook-resource used
for the [Society of Exploration Geophysics 2017 Distinguished Instructor Short Course](https://seg.org/Education/Courses/DISC/2017-DISC-Doug-Oldenburg)
for the [Society of Exploration Geophysics 2017 Distinguished Instructor Short Course](https://doi.org/10.1190/tle40020140.1)


4 changes: 3 additions & 1 deletion conf.py
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'https://gif.eos.ubc.ca/sites/default/files/Yang16.pdf',
'https://www.google.ca/url?sa=t&rct=j&q=&esrc=s&source=web&cd=2&ved=0ahUKEwjy65rOo8fRAhVJ1WMKHYO7CJAQFggkMAE&url=http%3A%2F%2Fwww.dmec.ca%2FDMEC%2Fmedia%2FDocuments%2FLalor%2520Symposium%2FLalor_Symposium_Oct-2014_Handout.pdf&usg=AFQjCNHYYoQbCDs7vftzMyfuY28XUkTItQ&sig2=KDwe8n7CRvmEvAOAcKh5Zg&cad=rja',
'https://gif.eos.ubc.ca/sites/default/files/McMillan_parametric.pdf',
'http://seg.org',
'https://seg.org',
'http://library.seg.org/doi/',
'http://www.publish.csiro.au/EX/pdf/ASEG2016ab212',
'https://www.onepetro.org/conference-paper/SEG-2012-1478',
'https://doi.org/*',
'http://canada.debeersgroup.com/* ',
'https://www.sensoft.ca',
'https://library.seg.org/page/policies/permissions',
'https://www.tandfonline.com/journals/texg20'
]
linkcheck_retries = 3
linkcheck_timeout = 900
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8 changes: 4 additions & 4 deletions content/case_histories/albany/index.rst
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**Special Thanks**

Thanks to the `Society of Exploration Geophysicists <http://seg.org>`__ for permission to reproduce figures and adapt text from:
Thanks to the `Society of Exploration Geophysicists <https://seg.org>`__ for permission to reproduce figures and adapt text from:

- Jean M. Legault, Josh Lymburner, Kevin Ralph, Peter Wood, Marta Orta, Alexander Prikhodko, and Nasreddine Bournas (2015) The Albany graphite discovery - a airborne and ground time-domain EM. SEG Technical Program Expanded Abstracts 2015: pp. 2056-2060. `https://doi.org/10.1190/segam2015-5908480.1 <https://doi.org/10.1190/segam2015-5908480.1>`__
- Jean M. Legault, Josh Lymburner, Kevin Ralph, Peter Wood, Marta Orta, Alexander Prikhodko, and Nasreddine Bournas (2015) The Albany graphite discovery - a airborne and ground time-domain EM. SEG Technical Program Expanded Abstracts 2015: pp. 2056-2060. `https://doi.org/10.1190/segam2015-5908480.1 <https://doi.org/10.1190/segam2015-5908480.1>`__

The material presented here has been modified from the SEG-published version and is subject to the `SEG terms of use and conditions <https://seg.org/Publications/Policies-and-Permissions/Permissions>`__. This case history was presented as a part of the `SEG 2017 Distinguished Instructor Short Course <https://seg.org/Education/Courses/DISC/2017-DISC-Doug-Oldenburg>`__.
The material presented here has been modified from the SEG-published version and is subject to the `SEG terms of use and conditions <https://library.seg.org/page/policies/permissions>`__. This case history was presented as a part of the `SEG 2017 Distinguished Instructor Short Course <https://doi.org/10.1190/tle40020140.1>`__.

.. Thanks to the `Society of Exploration Geophysicists <http://seg.org>`__ and `Geotech Ltd. <http://www.geotech.com>`__ for permission to reproduce figures and adapt text from the source material. This case history was adapted from the expanded abstract `"Airborne and Ground Time-Domain EM results from the Albany Graphite Discovery" <http://www.cronegeophysics.com/wp/wp-content/uploads/2015/04/Albany-Graphite-Air-Ground-TEM_Expanded_abstract_final-13-Feb-2015.pdf>`__.
.. Thanks to the `Society of Exploration Geophysicists <https://seg.org>`__ and `Geotech Ltd. <http://www.geotech.com>`__ for permission to reproduce figures and adapt text from the source material. This case history was adapted from the expanded abstract `"Airborne and Ground Time-Domain EM results from the Albany Graphite Discovery" <http://www.cronegeophysics.com/wp/wp-content/uploads/2015/04/Albany-Graphite-Air-Ground-TEM_Expanded_abstract_final-13-Feb-2015.pdf>`__.

**Abstract**

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8 changes: 4 additions & 4 deletions content/case_histories/aspen/index.rst
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**Special Thanks**

Thanks to the `Society of Exploration Geophysicists <http://seg.org>`__ for permission to reproduce figures and adapt text from:
Thanks to the `Society of Exploration Geophysicists <https://seg.org>`__ for permission to reproduce figures and adapt text from:

- Sarah Devriese and Douglas Oldenburg (2016) From exploration to reclamation: Using EM methods at SAGD sites in the Athabasca oil sands. SEG Technical Program Expanded Abstracts 2016: pp. 965-970. `https://doi.org/10.1190/segam2016-13842507.1 <https://doi.org/10.1190/segam2016-13842507.1>`__
- Sarah Devriese and Douglas Oldenburg (2016) From exploration to reclamation: Using EM methods at SAGD sites in the Athabasca oil sands. SEG Technical Program Expanded Abstracts 2016: pp. 965-970. `https://doi.org/10.1190/segam2016-13842507.1 <https://doi.org/10.1190/segam2016-13842507.1>`__

The material presented here has been modified from the SEG-published version and is subject to the `SEG terms of use and conditions <https://seg.org/Publications/Policies-and-Permissions/Permissions>`__. This case history was presented as a part of the `SEG 2017 Distinguished Instructor Short Course <https://seg.org/Education/Courses/DISC/2017-DISC-Doug-Oldenburg>`__.
The material presented here has been modified from the SEG-published version and is subject to the `SEG terms of use and conditions <https://library.seg.org/page/policies/permissions>`__. This case history was presented as a part of the `SEG 2017 Distinguished Instructor Short Course <https://doi.org/10.1190/tle40020140.1>`__.

.. Thanks to the `Society of Exploration Geophysicists <http://seg.org>`__ for permission to reproduce figures and adapt text from the source material. This case study is based on the extended abstract `"From exploration to reclamation: using EM methods at SAGD sites in the Athabasca oil sands" <http://library.seg.org/doi/abs/10.1190/segam2016-13842507.1>`__ :cite:`DevrieseOldenburg2016a`.
.. Thanks to the `Society of Exploration Geophysicists <https://seg.org>`__ for permission to reproduce figures and adapt text from the source material. This case study is based on the extended abstract `"From exploration to reclamation: using EM methods at SAGD sites in the Athabasca oil sands" <http://library.seg.org/doi/abs/10.1190/segam2016-13842507.1>`__ :cite:`DevrieseOldenburg2016a`.

**Abstract**

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**Special Thanks**

Thank to `Rock Solid Images <http://rocksolidimages.tech>`__ for for permission to
Thank to `Rock Solid Images <https://rocksolidimage.com/>`__ for for permission to
reproduce figures and adapt text from the source material. This case history has been
taken from the paper `"Predicting resevoir properties using CSEM, pre-stack seismic and well log data: case study in Hoop area, Barents Sea, Norway" <https://doi.org/10.1190/INT-2016-0097.1>`__ .

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6 changes: 3 additions & 3 deletions content/case_histories/bookpurnong/index.rst
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**Special Thanks**

Thanks to the `Exploration Geophysics <https://www.tandfonline.com/toc/texg20/current>`__ for permission to reproduce figures and adapt text from:
Thanks to the `Exploration Geophysics <https://www.tandfonline.com/journals/texg20>`__ for permission to reproduce figures and adapt text from:

- Andrea Viezzoli, Esben Auken, and Tim Munday (2009). ”Spatially constrained inversion for quasi 3D modelling of airborne electromagnetic data – an application for environmental assessment in the Lower Murray Region of South Australia.” Exploration Geophysics, 40(2), 173-183. `https://doi.org/10.1071/EG08027 <https://doi.org/10.1071/EG08027>`__

This case history was presented as a part of the `SEG 2017 Distinguished Instructor Short Course <https://seg.org/Education/Courses/DISC/2017-DISC-Doug-Oldenburg>`__.
This case history was presented as a part of the `SEG 2017 Distinguished Instructor Short Course <https://doi.org/10.1190/tle40020140.1>`__.


.. Thanks to the `Society of Exploration Geophysicists <http://seg.org>`__ and SkyTEM for permission to reproduce figures and adapt text from the source material. This case history is based upon two articles:
.. Thanks to the `Society of Exploration Geophysicists <https://seg.org>`__ and SkyTEM for permission to reproduce figures and adapt text from the source material. This case history is based upon two articles:

.. - `Spatially constrained inversion for quasi 3D modelling of airborne electromagnetic data – an application for environmental assessment in the Lower Murray Region of South Australia <http://library.seg.org/doi/abs/10.1071/EG08027>`_ by Viezzoli, Auken and Munday :cite:`viezzoli2009` and
.. - `Accurate quasi 3D versus practical full 3D inversion of AEM data – the Bookpurnong case study <http://www.hgg.geo.au.dk/Papers_EndNote/0477620876/VIEZZOLI2010C.pdf>`_ by Viezzoli, Munday, Auken and Christiansen :cite:`viezzoli2010`.
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4 changes: 2 additions & 2 deletions content/case_histories/do27do18tkc/index.rst
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**Special Thanks**

Thanks to the `Society of Exploration Geophysicists <http://seg.org>`__ for permission to reproduce figures and adapt text from:
Thanks to the `Society of Exploration Geophysicists <https://seg.org>`__ for permission to reproduce figures and adapt text from:

- Sarah G. R. Devriese, Kristofer Davis, and Douglas W. Oldenburg (2017). ”Inversion of airborne geophysics over the DO-27/DO-18 kimberlites — Part 1: Potential fields.” Interpretation, 5(3), T299-T311. `https://doi.org/10.1190/INT-2016-0142.1 <https://doi.org/10.1190/INT-2016-0142.1>`__
- Dominique Fournier, Seogi Kang, Michael S. McMillan, and Douglas W. Oldenburg (2017). ”Inversion of airborne geophysics over the DO-27/DO-18 kimberlites — Part 2: Electromagnetics.” Interpretation, 5(3), T313-T325. `https://doi.org/10.1190/INT-2016-0140.1 <https://doi.org/10.1190/INT-2016-0140.1>`__
- Seogi Kang, Dominique Fournier, and Douglas W. Oldenburg (2017). ”Inversion of airborne geophysics over the DO-27/DO-18 kimberlites — Part 3: Induced polarization.” Interpretation, 5(3), T327-T340. `https://doi.org/10.1190/INT-2016-0141.1 <https://doi.org/10.1190/INT-2016-0141.1>`__

The material presented here has been modified from the SEG-published version and is subject to the `SEG terms of use and conditions <https://seg.org/Publications/Policies-and-Permissions/Permissions>`__. This case history was presented as a part of the `SEG 2017 Distinguished Instructor Short Course <https://seg.org/Education/Courses/DISC/2017-DISC-Doug-Oldenburg>`__.
The material presented here has been modified from the SEG-published version and is subject to the `SEG terms of use and conditions <https://library.seg.org/page/policies/permissions>`__. This case history was presented as a part of the `SEG 2017 Distinguished Instructor Short Course <https://doi.org/10.1190/tle40020140.1>`__.

**Abstract**

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.. _MAG3D: http://mag3d.readthedocs.io/en/latest/
.. _MAG3D: https://mag3d.readthedocs.io/


Frequency-Domain EM
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2 changes: 1 addition & 1 deletion content/case_histories/do27do18tkc/survey.rst
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All data used in this study were converted from their native coordinate system
to the NAD27-UTM 12N (`EPSG 26712`_) projection prior to processing.

.. _EPSG 26712: http://spatialreference.org/ref/epsg/nad27-utm-zone-12n/
.. _EPSG 26712: https://spatialreference.org/ref/epsg/26712/

|
|
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4 changes: 2 additions & 2 deletions content/case_histories/furggwanghorn/index.rst
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**Special Thanks**

Thanks to the `Society of Exploration Geophysicists <http://seg.org>`__ for permission to reproduce figures and adapt text from:
Thanks to the `Society of Exploration Geophysicists <https://seg.org>`__ for permission to reproduce figures and adapt text from:

- Kaspar Merz, Hansruedi Maurer, Lasse Rabenstein, Thomas Buchli, Sarah M. Springman, and Matthias Zweifel (2016). ”Multidisciplinary geophysical investigations over an alpine rock glacier.” GEOPHYSICS, 81(1), WA147-WA157. `https://doi.org/10.1190/geo2015-0157.1 <https://doi.org/10.1190/geo2015-0157.1>`__

The material presented here has been modified from the SEG-published version and is subject to the `SEG terms of use and conditions <https://seg.org/Publications/Policies-and-Permissions/Permissions>`__. This case history was presented as a part of the `SEG 2017 Distinguished Instructor Short Course <https://seg.org/Education/Courses/DISC/2017-DISC-Doug-Oldenburg>`__.
The material presented here has been modified from the SEG-published version and is subject to the `SEG terms of use and conditions <https://library.seg.org/page/policies/permissions>`__. This case history was presented as a part of the `SEG 2017 Distinguished Instructor Short Course <https://doi.org/10.1190/tle40020140.1>`__.

**Abstract**

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.. topic :: Prelude

This case history follows the use of airborne and ground-based TDEM surveys to locate and characterize a deeply buried very massive sulphide deposit in the Flin Flon Greenbelt, Manitoba/Saskatchewan, Canada.
This case history follows the use of airborne and ground-based TDEM surveys to locate and characterize a deeply buried very massive sulphide deposit in the Flin Flon Greenbelt, Manitoba/Saskatchewan, Canada.

**Special Thanks**

Thanks to the `Society of Exploration Geophysicists <http://seg.org>`__ for permission to reproduce figures and adapt text from:
Thanks to the `Society of Exploration Geophysicists <https://seg.org>`__ for permission to reproduce figures and adapt text from:

- Yang Dikun and Oldenburg Douglas W. (2017). ”3D inversion of total magnetic intensity data for time-domain EM at the Lalor massive sulphide deposit.” Exploration Geophysics, 48(2), 110-123. `https://doi.org/10.1071/EG15070 <https://doi.org/10.1071/EG15070>`__
- Yang Dikun and Oldenburg Douglas W. (2017). ”3D inversion of total magnetic intensity data for time-domain EM at the Lalor massive sulphide deposit.” Exploration Geophysics, 48(2), 110-123. `https://doi.org/10.1071/EG15070 <https://doi.org/10.1071/EG15070>`__

The material presented here has been modified from the SEG-published version and is subject to the `SEG terms of use and conditions <https://seg.org/Publications/Policies-and-Permissions/Permissions>`__. This case history was presented as a part of the `SEG 2017 Distinguished Instructor Short Course <https://seg.org/Education/Courses/DISC/2017-DISC-Doug-Oldenburg>`__.
The material presented here has been modified from the SEG-published version and is subject to the `SEG terms of use and conditions <https://library.seg.org/page/policies/permissions>`__. This case history was presented as a part of the `SEG 2017 Distinguished Instructor Short Course <https://doi.org/10.1190/tle40020140.1>`__.

.. Thanks to the `Society of Exploration Geophysicists <http://seg.org>`__ for permission to reproduce figures and adapt text from the source material. This case history was adapted from `"3D inversion of total magnetic intensity data for time-domain EM at the Lalor massive sulphide deposit" <https://gif.eos.ubc.ca/sites/default/files/Yang16.pdf>`__ (:cite:`yangoldenburg2016`) and `"Mine scale description of the mineralization at the Lalor deposit, Snow Lake, Manitoba, Canada" <https://www.google.ca/url?sa=t&rct=j&q=&esrc=s&source=web&cd=2&ved=0ahUKEwjy65rOo8fRAhVJ1WMKHYO7CJAQFggkMAE&url=http%3A%2F%2Fwww.dmec.ca%2FDMEC%2Fmedia%2FDocuments%2FLalor%2520Symposium%2FLalor_Symposium_Oct-2014_Handout.pdf&usg=AFQjCNHYYoQbCDs7vftzMyfuY28XUkTItQ&sig2=KDwe8n7CRvmEvAOAcKh5Zg&cad=rja>`__ (:cite:`Taylor2014`).
.. Thanks to the `Society of Exploration Geophysicists <https://seg.org>`__ for permission to reproduce figures and adapt text from the source material. This case history was adapted from `"3D inversion of total magnetic intensity data for time-domain EM at the Lalor massive sulphide deposit" <https://gif.eos.ubc.ca/sites/default/files/Yang16.pdf>`__ (:cite:`yangoldenburg2016`) and `"Mine scale description of the mineralization at the Lalor deposit, Snow Lake, Manitoba, Canada" <https://www.google.ca/url?sa=t&rct=j&q=&esrc=s&source=web&cd=2&ved=0ahUKEwjy65rOo8fRAhVJ1WMKHYO7CJAQFggkMAE&url=http%3A%2F%2Fwww.dmec.ca%2FDMEC%2Fmedia%2FDocuments%2FLalor%2520Symposium%2FLalor_Symposium_Oct-2014_Handout.pdf&usg=AFQjCNHYYoQbCDs7vftzMyfuY28XUkTItQ&sig2=KDwe8n7CRvmEvAOAcKh5Zg&cad=rja>`__ (:cite:`Taylor2014`).

**Abstract**

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:name: lalor_thumbnail_index


.. - The Lalor deposit is a volcanogenic massive sulphide that is characterised as a stack of conductive ore lenses buried more than 600 m deep.
.. - Helicopter sub-audio magnetics (HeliSAM) survey using a ground large transmitter loop and an airborne total magnetic intensity magnetometer receiver was employed to measure the time-domain EM responses of the conductive ore bodies.
.. - The Lalor deposit is a volcanogenic massive sulphide that is characterised as a stack of conductive ore lenses buried more than 600 m deep.
.. - Helicopter sub-audio magnetics (HeliSAM) survey using a ground large transmitter loop and an airborne total magnetic intensity magnetometer receiver was employed to measure the time-domain EM responses of the conductive ore bodies.
.. - The Lalor ore lenses, as well as another small sulphide-bearing argillite, are imaged by 3D inversion.
.. - Advanced inversion techniques, including warm-start and mesh refinement, were required to obtain high-quality 3D conductivity models.


The Lalor deposit is a massive sulphide that is characterized as a stack of conductive ore lenses buried more than 600 m deep. As of 2014, the deposit has a reserve of 15.2 Mt and an inferred resource of 10.1 Mt. Compared to typical Canadian gold deposits, the Lalor lake deposit has a grade 130% above the average.

In order to characterize the Lalor lake deposit, a helicopter sub-audio magnetic (HeliSAM) survey using a ground large transmitter loop and an airborne total magnetic intensity magnetometer receiver was employed to measure the time-domain EM responses of the conductive ore bodies. Using inversion, the Lalor ore lenses as well as small sulphide-bearing argillite units were successfully imaged in 3D. The successful inversion of the geophysical data was made possible through the use of warm-start and mesh refinement algorithms.
In order to characterize the Lalor lake deposit, a helicopter sub-audio magnetic (HeliSAM) survey using a ground large transmitter loop and an airborne total magnetic intensity magnetometer receiver was employed to measure the time-domain EM responses of the conductive ore bodies. Using inversion, the Lalor ore lenses as well as small sulphide-bearing argillite units were successfully imaged in 3D. The successful inversion of the geophysical data was made possible through the use of warm-start and mesh refinement algorithms.


**Contents**
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