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MapInfo Forums 2014 
Data integration: using geochemical data 
Fiona Eddison, MinTarget 
Heidi Pass, Reflex Geochemistry
2 
MapInfo Forums 2014 
Overview of organisations 
Fiona Eddison 
MinTarget geological consulting 
mintarget@optusnet.com....
3 
MapInfo Forums 2014 
Business Problem 
Identifying and ranking mineral exploration targets using soil geochemistry, ge...
4 
MapInfo Forums 2014 
The Solution 
Use MapInfo Discover and ioGAS software: 
ioGAS 
Specially developed for explorato...
5 
MapInfo Forums 2014 
Probability plots Log scale 
Selected target elements for orogenic Au:
6 
MapInfo Forums 2014 
Probability plotsLinear scale 
Selected target elements for VHMS mineralisation:
7 
MapInfo Forums 2014 
Probability plots Log scale 
•Compare and contrast with orogenic Au plots 
•Pick suitable elements
8 
MapInfo Forums 2014 
X vs Y plots with data trendsFe vs selected indicator elements 
•Data for two nearby regions colou...
9 
MapInfo Forums 2014 
South prospect data 
Just one linear 
trend in Cu 
Clear, linear 
trend in Pb
10 
MapInfo Forums 2014 
Raw Cu Grid 
Can you spot the anomaly?
11 
MapInfo Forums 2014 
What are regression residuals? 
+ve residual 
-ve residual 
The residuals, distance-parallel to t...
12 
MapInfo Forums 2014 
Cu–Fe residuals for the South prospect 
Small triangles depict -ve residuals (depletion) 
Large t...
13 
MapInfo Forums 2014 
Cu–Fe residuals map 
Export as georectified attribute map to load into MapInfo or use data “on th...
14 
MapInfo Forums 2014 
Gridded images of raw & residual Cu data 
Raw Cu data 
Cu residuals based on Fe 
Compare the imag...
15 
MapInfo Forums 2014 
Gridded images of raw & residual Cu data —anomalies 
Raw Cu data 
Cu residuals based on Fe 
Poten...
16 
MapInfo Forums 2014 
MapInfo geology attributes and ioGAS geochemistry 
Points coloured up according to geology code o...
17 
MapInfo Forums 2014 
MapInfo’s ioGAS Importer tool 
Load tool (located in Encomfolder) 
Match up Sample ID and co-or...
18 
MapInfo Forums 2014 
X vs Y plots Selected elements for orogenic Au targeting 
Example: North prospect orogenic Au (re...
19 
MapInfo Forums 2014 
Ranked variable mapsNorth prospect 
Percentile-based maps in just one click in ioGAS, but what is...
20 
MapInfo Forums 2014 
RGB imageA quick three-element tools in ioGAS to identify element zonation and co-occurrence 
90t...
21 
MapInfo Forums 2014 
Consider all data in MapInfo 
Overlay datasets —surface and interpreted geology, geophysics, DEM,...
22 
MapInfo Forums 2014 
Check interpretation 
M = Mafic 
F = Felsic 
D = Dyke 
Au 
Ba 
As 
Flexure in fault 
Flexure in d...
23 
MapInfo Forums 2014 
Outcomes and lessons learnt 
Integrating MapInfo Discover and ioGAS allows smooth workflow betwe...
24 
MapInfo Forums 2014 
Questions?
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Data Integration: Using Geochemical Data

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Fiona Eddison from MinTarget and Heidi Pass from Reflex Geochemistry present on data integration: adding value to geochemical data at MapInfo Forum 2014 in Perth.

http://www.mapinfo.com/

Publicado en: Empresariales
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Data Integration: Using Geochemical Data

  1. 1. MapInfo Forums 2014 Data integration: using geochemical data Fiona Eddison, MinTarget Heidi Pass, Reflex Geochemistry
  2. 2. 2 MapInfo Forums 2014 Overview of organisations Fiona Eddison MinTarget geological consulting mintarget@optusnet.com.au Heidi Pass Senior Geochemist heidi.pass@imdexlimited.com REFLEX Geochemistry —a leader in innovative, technology based data collection, analysis and interpretation of geological results for the global minerals industry http://iogas.netwww.reflexinstruments.com
  3. 3. 3 MapInfo Forums 2014 Business Problem Identifying and ranking mineral exploration targets using soil geochemistry, geology and geophysics How can I quickly and effectively add value to my maps using geochemical data?
  4. 4. 4 MapInfo Forums 2014 The Solution Use MapInfo Discover and ioGAS software: ioGAS Specially developed for exploratory and geochemical data analysis, offering tools and workflows for efficiently interpreting your data Contains MapInfo export functions for data and images MapInfo “Discover” import tool Provides a live link to data in ioGAS Allows integration with “non-geochemical” datasets to assist in decision making
  5. 5. 5 MapInfo Forums 2014 Probability plots Log scale Selected target elements for orogenic Au:
  6. 6. 6 MapInfo Forums 2014 Probability plotsLinear scale Selected target elements for VHMS mineralisation:
  7. 7. 7 MapInfo Forums 2014 Probability plots Log scale •Compare and contrast with orogenic Au plots •Pick suitable elements
  8. 8. 8 MapInfo Forums 2014 X vs Y plots with data trendsFe vs selected indicator elements •Data for two nearby regions coloured separately •Reveals different trends for each group •Statistically treat the data separately
  9. 9. 9 MapInfo Forums 2014 South prospect data Just one linear trend in Cu Clear, linear trend in Pb
  10. 10. 10 MapInfo Forums 2014 Raw Cu Grid Can you spot the anomaly?
  11. 11. 11 MapInfo Forums 2014 What are regression residuals? +ve residual -ve residual The residuals, distance-parallel to the y axis above and below the fitted line, are useful. Those greater than 2.5 std dev are considered outliers.
  12. 12. 12 MapInfo Forums 2014 Cu–Fe residuals for the South prospect Small triangles depict -ve residuals (depletion) Large triangles depict +ve residuals (enrichment) — note that Cu values are not necessarily high
  13. 13. 13 MapInfo Forums 2014 Cu–Fe residuals map Export as georectified attribute map to load into MapInfo or use data “on the fly”
  14. 14. 14 MapInfo Forums 2014 Gridded images of raw & residual Cu data Raw Cu data Cu residuals based on Fe Compare the images below and pick the anomalies
  15. 15. 15 MapInfo Forums 2014 Gridded images of raw & residual Cu data —anomalies Raw Cu data Cu residuals based on Fe Potentially interesting areas are circled Note downgraded area
  16. 16. 16 MapInfo Forums 2014 MapInfo geology attributes and ioGAS geochemistry Points coloured up according to geology code obtained from MapInfo and shaped to show residuals to see if the story holds up
  17. 17. 17 MapInfo Forums 2014 MapInfo’s ioGAS Importer tool Load tool (located in Encomfolder) Match up Sample ID and co-ordinate columns Select the columns for import Select all or visible-only data
  18. 18. 18 MapInfo Forums 2014 X vs Y plots Selected elements for orogenic Au targeting Example: North prospect orogenic Au (red points) Data clustered on line of best fit for XY plots for ‘Fe vs As’ & ‘Fe vs Ba’
  19. 19. 19 MapInfo Forums 2014 Ranked variable mapsNorth prospect Percentile-based maps in just one click in ioGAS, but what is the best way to see the relationship between all three?
  20. 20. 20 MapInfo Forums 2014 RGB imageA quick three-element tools in ioGAS to identify element zonation and co-occurrence 90thpercentile cut off = top 10% of the data Au Ba As Ba & Au As & Au Au&Ba &As Ba & As
  21. 21. 21 MapInfo Forums 2014 Consider all data in MapInfo Overlay datasets —surface and interpreted geology, geophysics, DEM, geochem, etc (images below use GSWA geology, 2VD-TMI & Au/Ba/As as RGB)
  22. 22. 22 MapInfo Forums 2014 Check interpretation M = Mafic F = Felsic D = Dyke Au Ba As Flexure in fault Flexure in dyke Au assoc w/ fault and geol bndry? Extend geochem survey
  23. 23. 23 MapInfo Forums 2014 Outcomes and lessons learnt Integrating MapInfo Discover and ioGAS allows smooth workflow between the mapping and geochemical environments to add value to your geological interpretations; Use MapInfo to join geology attributes to geochemical data Use ioGAS to assess geochemical data suitability and determine appropriate statistical methods Use ioGAS to conduct linear regression analysis and automatically attribute statistically significant anomalies; ID element zonation and co-occurrence Import data into map space using MapInfo to interpret “on the fly”; images can be imported, too Compare the interpreted geochemistry with other key datasets
  24. 24. 24 MapInfo Forums 2014 Questions?

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