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ISO19115_3
<DIV STYLE="text-align:Left;"><P STYLE="font-size:16ptmargin:0 0 0 0;"><SPAN><SPAN>A 50 m grid of airborne radiometric thorium-to-potassium (Th/K) ratios for New Brunswick.</SPAN></SPAN></P><DIV><DIV><P><SPAN STYLE="font-size:16pt"><SPAN>This dataset represents the spatial distribution of thorium-to-potassium (Th/K) ratios across New Brunswick at 50 m resolution, derived from a compilation of NRCan airborne radiometric surveys originally flown at 1000 m line spacing (base compilation) and supplemented with higher-resolution surveys flown at 300 m line spacing or less. The Th/K ratio highlights areas where thorium and potassium abundances differ, providing insights into lithological variations and alteration patterns. The dataset is provided in NB Stereographic double (NAD83) for consistent province-wide coverage.</SPAN></SPAN></P><P STYLE="font-size:16ptmargin:0 0 0 0;"><SPAN>The Th/K ratio grid was produced by dividing the compiled thorium (Th) raster by the compiled potassium (K) raster at each 50 m cell. Individual NRCan radiometric surveys were microlevelled and interpolated to produce seamless 50 m grids before calculation. The final ratio raster was projected to NB Stereographic double (NAD83) and delivered as individual grid.</SPAN></P><P><SPAN>The dataset is not updated regularly. Updates occur only if new reprocessing, corrections, or additional surveys become available. As of now, the compilation represents the most recent processing as of December 2025.</SPAN></P></DIV></DIV></DIV>
Amirabbas Karbalaeiramezanali
GSB
amirabbas.karbalaeiramezanali@gnb.ca
Serge Allard
GSB
Serge.Allard@gnb.ca
Serge Alard
Serge Allard
Serge Allard
Hernan Ugalde
hernan.ugalde@dipgeosciences.com
<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Sensitivity: Public/Unclassified</SPAN></P><P><SPAN>Retention: 5 Years</SPAN></P></DIV></DIV></DIV>
NB Dept of Natural Resources, GSB Section
Version 6.2 (Build 9200) ; Esri ArcGIS 10.8.1.14362
NB_ThK_ratio_50m
1
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A 50 m grid of airborne radiometric thorium-to-potassium (Th/K) ratios for New Brunswick.
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Raster Dataset
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