virgin river dcip report - university of british columbia · 2011. 1. 26. · virgin river dcip...
TRANSCRIPT
![Page 1: Virgin River DCIP Report - University of British Columbia · 2011. 1. 26. · Virgin River DCIP Report Justin Granek 1 1 University of British Columbia Geophysical Inversion Facility](https://reader035.vdocuments.us/reader035/viewer/2022071517/613b61b3f8f21c0c8268f7aa/html5/thumbnails/1.jpg)
Data AcquisitionInversion
InterpretationDiscussion
Virgin River DCIP Report
Justin Granek1
1University of British Columbia
Geophysical Inversion Facility
Applied Geophysics, 2010
Justin Granek DCIP Report
![Page 2: Virgin River DCIP Report - University of British Columbia · 2011. 1. 26. · Virgin River DCIP Report Justin Granek 1 1 University of British Columbia Geophysical Inversion Facility](https://reader035.vdocuments.us/reader035/viewer/2022071517/613b61b3f8f21c0c8268f7aa/html5/thumbnails/2.jpg)
Data AcquisitionInversion
InterpretationDiscussion
Outline
1 Data AcquisitionLocationSurvey Specications
2 InversionData ErrorsDCIP2DDCIP3D
3 InterpretationCorrelationsSnowbird Tectonic Zone
Justin Granek DCIP Report
![Page 3: Virgin River DCIP Report - University of British Columbia · 2011. 1. 26. · Virgin River DCIP Report Justin Granek 1 1 University of British Columbia Geophysical Inversion Facility](https://reader035.vdocuments.us/reader035/viewer/2022071517/613b61b3f8f21c0c8268f7aa/html5/thumbnails/3.jpg)
Data AcquisitionInversion
InterpretationDiscussion
LocationSurvey Specs
Outline
1 Data AcquisitionLocationSurvey Specications
2 InversionData ErrorsDCIP2DDCIP3D
3 InterpretationCorrelationsSnowbird Tectonic Zone
Justin Granek DCIP Report
![Page 4: Virgin River DCIP Report - University of British Columbia · 2011. 1. 26. · Virgin River DCIP Report Justin Granek 1 1 University of British Columbia Geophysical Inversion Facility](https://reader035.vdocuments.us/reader035/viewer/2022071517/613b61b3f8f21c0c8268f7aa/html5/thumbnails/4.jpg)
Data AcquisitionInversion
InterpretationDiscussion
LocationSurvey Specs
RegionalAthabasca Basin, Northern Saskatchewan
Northern Saskatchewan
South Central Athabasca Basin
NTS Reference 74 G/12
Justin Granek DCIP Report
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Data AcquisitionInversion
InterpretationDiscussion
LocationSurvey Specs
LocalWide Lake Grid
10 Lines runningNW-SE
Approximately 4kmlong each
Approximately 40line-km total
Justin Granek DCIP Report
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Data AcquisitionInversion
InterpretationDiscussion
LocationSurvey Specs
Outline
1 Data AcquisitionLocationSurvey Specications
2 InversionData ErrorsDCIP2DDCIP3D
3 InterpretationCorrelationsSnowbird Tectonic Zone
Justin Granek DCIP Report
![Page 7: Virgin River DCIP Report - University of British Columbia · 2011. 1. 26. · Virgin River DCIP Report Justin Granek 1 1 University of British Columbia Geophysical Inversion Facility](https://reader035.vdocuments.us/reader035/viewer/2022071517/613b61b3f8f21c0c8268f7aa/html5/thumbnails/7.jpg)
Data AcquisitionInversion
InterpretationDiscussion
LocationSurvey Specs
Electrode CongurationPole-Pole
Collected in Summer 2007-2008 by Patterson Geophysics Ltd.
Pole Spacing a = 150m
12 Stainless Steel Electrodes (Including Innites)
Justin Granek DCIP Report
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Data AcquisitionInversion
InterpretationDiscussion
LocationSurvey Specs
Electrode CongurationCurrent Advance Protocol
For Electrodes n=1:6
Advance in Increments of 75m
For Electrodes n=7:10
Advance in Increments of 150m
Data Collected at Current-Potential Electrode Spacings of...
75m, 150m, 225m, 300m, 375m, 450m, 525m, 600m, 675m, 750m,825m, 900m, 1050m, 1200m, 1350m, and 1500m.
Justin Granek DCIP Report
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Data AcquisitionInversion
InterpretationDiscussion
LocationSurvey Specs
HardwareInstrument Specications
Walcer TX9000 9.0 kW IP Transmitter
Walcer MG-12 Motor Generator
Two IRIS Instruments ELREC Pro Time DomainIP-Resistivity Receivers
Justin Granek DCIP Report
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Data AcquisitionInversion
InterpretationDiscussion
LocationSurvey Specs
DataFiles Provided to UBC-GIF
RES2DINV File (.dat)
Reduced data format for RES2DINV software
Excel Spreadsheet (.xls)
File containing most of the raw data:
Voltage (mV)
Current (A)
Self Potential (mV/V)
20 Chargeability Channels (mV/V)
Local Tx/Rx Electrode Coordinates
Reduced Excel Spreadsheet (.xls)
Reduced data format for plotting pseudo-sections from Excel
Justin Granek DCIP Report
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Data AcquisitionInversion
InterpretationDiscussion
LocationSurvey Specs
DataQuality
Duplicates
Data are mostly duplicated
Typically very similar
IP Data
Very noisy
Not very useful
Justin Granek DCIP Report
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Data AcquisitionInversion
InterpretationDiscussion
Data ErrorsDCIP2DDCIP3D
Outline
1 Data AcquisitionLocationSurvey Specications
2 InversionData ErrorsDCIP2DDCIP3D
3 InterpretationCorrelationsSnowbird Tectonic Zone
Justin Granek DCIP Report
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Data AcquisitionInversion
InterpretationDiscussion
Data ErrorsDCIP2DDCIP3D
Errors
Noise oor + 5% of each Datum
2D: Noise oor calculated as 90% of smallest value along line
3D: Noise oor calculated as 90% of smallest value
Justin Granek DCIP Report
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Data AcquisitionInversion
InterpretationDiscussion
Data ErrorsDCIP2DDCIP3D
Outline
1 Data AcquisitionLocationSurvey Specications
2 InversionData ErrorsDCIP2DDCIP3D
3 InterpretationCorrelationsSnowbird Tectonic Zone
Justin Granek DCIP Report
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Data AcquisitionInversion
InterpretationDiscussion
Data ErrorsDCIP2DDCIP3D
Survey Lines
Justin Granek DCIP Report
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Data AcquisitionInversion
InterpretationDiscussion
Data ErrorsDCIP2DDCIP3D
Local Grid: Default ParametersData
Justin Granek DCIP Report
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Data AcquisitionInversion
InterpretationDiscussion
Data ErrorsDCIP2DDCIP3D
Local Grid: Default ParametersInversion Results
Justin Granek DCIP Report
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Data AcquisitionInversion
InterpretationDiscussion
Data ErrorsDCIP2DDCIP3D
Local Grid: Default ParametersInversion Results
Justin Granek DCIP Report
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Data AcquisitionInversion
InterpretationDiscussion
Data ErrorsDCIP2DDCIP3D
UTM: Fine MeshData
Justin Granek DCIP Report
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Data AcquisitionInversion
InterpretationDiscussion
Data ErrorsDCIP2DDCIP3D
UTM: Fine MeshInversion Results
Justin Granek DCIP Report
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Data AcquisitionInversion
InterpretationDiscussion
Data ErrorsDCIP2DDCIP3D
Outline
1 Data AcquisitionLocationSurvey Specications
2 InversionData ErrorsDCIP2DDCIP3D
3 InterpretationCorrelationsSnowbird Tectonic Zone
Justin Granek DCIP Report
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Data AcquisitionInversion
InterpretationDiscussion
Data ErrorsDCIP2DDCIP3D
UTM: Default ParametersInversion Parameters
Data 3582
Mesh 175 712 cells
Core Cell Size 75m×75m×37.5m
Reference Model 1000Ωm
Mist 4059
Justin Granek DCIP Report
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Data AcquisitionInversion
InterpretationDiscussion
Data ErrorsDCIP2DDCIP3D
UTM: Default ParametersVertical Slice through Line 1200N
Justin Granek DCIP Report
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Data AcquisitionInversion
InterpretationDiscussion
Data ErrorsDCIP2DDCIP3D
UTM: Default ParametersSurface View
Justin Granek DCIP Report
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Data AcquisitionInversion
InterpretationDiscussion
Data ErrorsDCIP2DDCIP3D
UTM: Default Parameters375m Depth Slice
Justin Granek DCIP Report
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Data AcquisitionInversion
InterpretationDiscussion
Data ErrorsDCIP2DDCIP3D
UTM: Default Parameters750m Depth Slice
Justin Granek DCIP Report
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Data AcquisitionInversion
InterpretationDiscussion
Data ErrorsDCIP2DDCIP3D
UTM: Default ParametersResistivity Cuto of 300Ωm
Justin Granek DCIP Report
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Data AcquisitionInversion
InterpretationDiscussion
Data ErrorsDCIP2DDCIP3D
ProblemsTopics worth Revisiting
Duplicated Data
IP Chargeability
Noisy Surface
Justin Granek DCIP Report
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Data AcquisitionInversion
InterpretationDiscussion
Data ErrorsDCIP2DDCIP3D
Duplicated DataComparison at 600m Depth Slice
Justin Granek DCIP Report
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Data AcquisitionInversion
InterpretationDiscussion
Data ErrorsDCIP2DDCIP3D
IP ChargeabilityDecay Curves
Justin Granek DCIP Report
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Data AcquisitionInversion
InterpretationDiscussion
Data ErrorsDCIP2DDCIP3D
IP ChargeabilityInversion
Datum 554
Mesh 165 528 cells
Core Cell Size 75m×75m×37.5m
Mist 2539
Justin Granek DCIP Report
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Data AcquisitionInversion
InterpretationDiscussion
Data ErrorsDCIP2DDCIP3D
IP Chargeability600m Depth Slice: Useful...?
Justin Granek DCIP Report
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Data AcquisitionInversion
InterpretationDiscussion
Data ErrorsDCIP2DDCIP3D
Surface WeightingSurface View
Justin Granek DCIP Report
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Data AcquisitionInversion
InterpretationDiscussion
Data ErrorsDCIP2DDCIP3D
Surface WeightingVertical Slice through Line 1200N
Justin Granek DCIP Report
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Data AcquisitionInversion
InterpretationDiscussion
Data ErrorsDCIP2DDCIP3D
Surface Weighting375m Depth Slice
Justin Granek DCIP Report
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Data AcquisitionInversion
InterpretationDiscussion
Data ErrorsDCIP2DDCIP3D
Surface Weighting750m Depth Slice
Justin Granek DCIP Report
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Data AcquisitionInversion
InterpretationDiscussion
CorrelationsSnowbird Tectonic Zone
Outline
1 Data AcquisitionLocationSurvey Specications
2 InversionData ErrorsDCIP2DDCIP3D
3 InterpretationCorrelationsSnowbird Tectonic Zone
Justin Granek DCIP Report
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Data AcquisitionInversion
InterpretationDiscussion
CorrelationsSnowbird Tectonic Zone
ZTEMRecall From Elliott's Presentation...
Justin Granek DCIP Report
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Data AcquisitionInversion
InterpretationDiscussion
CorrelationsSnowbird Tectonic Zone
Outline
1 Data AcquisitionLocationSurvey Specications
2 InversionData ErrorsDCIP2DDCIP3D
3 InterpretationCorrelationsSnowbird Tectonic Zone
Justin Granek DCIP Report
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Data AcquisitionInversion
InterpretationDiscussion
CorrelationsSnowbird Tectonic Zone
Snowbird Tectonic ZoneGraphitic Fault Oset
Justin Granek DCIP Report
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Data AcquisitionInversion
InterpretationDiscussion
CorrelationsSnowbird Tectonic Zone
Snowbird Tectonic ZoneGraphitic Fault Oset
Justin Granek DCIP Report
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Data AcquisitionInversion
InterpretationDiscussion
DiscussionFeedback, Questions & Opinions
What Do You Think?
Justin Granek DCIP Report