Publications IUGS Manual of Standard Methods for Establishing the Global Geochemical Reference Network Chapter 2 Supplementary material

Chapter 2 Supplementary material

Chapter 2 - Supplementary material

 

1. Details about the following files can be found at the ‘Sampling/GTN 160x160 km’ web page of the IUGS Commission on Global Geochemical Baselines.

 

(a) Global Reference Network grid cells of 160x160 km files:

 


IUGS-CGGB_19833_GRN_160x160km_grid_cells.xlsx (Microsoft™ Excel workbook file containing the 19,833 grid cells that cover the whole globe).


IUGS-CGGB_GRN_19833_160x160km_grid_cells.zip (same as above but in a Google Earth kml file format). When unzipped the file name is:

  IUGS-CGGB_19833_GRN_160x160km_grid_cells.kml.

(b) Global Terrestrial Network grid cells of 160x160 km files:

 


        IUGS-CGGB_7356_GTN_grid_cells_160x160km.kml.


2. Details about the following six files can be found at the ‘Sampling/Sampling Design’ web page of the IUGS Commission on Global Geochemical Baselines.


(c) Randomly selected points in each Global Terrestrial Network grid cell:

 

 

 

 

  • IUGS-CGGB_16-random-points_per_GTN_160x160km-grid-cell.xlsx (Microsoft™ Excel workbook file with 16 random points in each of the 7356 grid cells of 160x160 km totalling 117,696 random sampling points). It is noted that this sampling density is not recommended for the Global Geochemical Reference Network.

 

For more information consult the "International Union of Geological Sciences Manual of Standard Methods for Establishing the Global Geochemical Reference Network".