Title		IE_GSI_Geochemistry_Shallow_Topsoil_A_G10_Mid_West_ITM_Metadata
		IE_GSI_Geochemistry_Shallow_Topsoil_A_G10_Mid_West_ITM_6308xxA-6346xxA_Download_v1.0
Purpose		
The Tellus project is a survey of heavy metals, organic carbon and pH in topsoils in Ireland. Topsoil is the upper surface layer of the soil and this survey measures the amount and type of chemicals in these surface soils. These chemicals can be natural or man-made. This allows us to map different soil types and learn about how they were made.
Shallow topsoil samples were taken from the 'Midlands West' (G10) area and tested for their chemical make-up.
This data will help in land-use planning, mapping of natural resources, help understand the impact of farming on the environment, and aid policy. Higher amounts of some chemicals in soils may also affect human and livestock health. 

Version		1.0

Summary		
Soil samples were collected in block G10 (Midlands West) between 2023 and early 2024, and tested for the chemicals that make up the soil. A total of 3499 samples were taken from areas such as meadows, fields, uplands, parks and pastures. The samples were taken using a hand auger from depths of up to 0.20 m and were collected into plastic bags. 
The <2 mm fraction of the sample was sent to a lab to be tested for chemicals and the results were given as mg/kg (milligram per kilogram) or % (percent). 
Data are censored to half detection limit (HDL) where below Lower Limit of Detection (LLD). For elements where a large proportion of observations fall below the accredited LLD, non-accredited, uncensored below-LLD data are also provided (B, Ta, Pd and Pt).
Conditioned pH data are presented separately. Data are calculated using the linear regression relationship between the G10A block of data and the mean values for the pH SRMs for blocks up to G6 (Intercept: -0.06; Slope: 1.07).
Users are cautioned that no conditioning or correction factors have been applied to the data, other than for pH. Therefore boundary affects for some elements may be apparent if mapping alongside other Tellus datasets.
It is a vector dataset. Vector data portray the world using points, lines, and polygons (areas). This soil geochemistry data is given as points. Each point gives information about where the sample was collected, the type and value of the chemicals that were tested. This includes:

• Sample_ID = Sample Number
# Location information for the sample site:
• Easting_ITM = Easting (Irish Transverse Mercator coordinate system)
• Northing_ITM = Northing (Irish Transverse Mercator coordinate system)
# List of chemical elements:
• pH_CaCl2 = pH by CaCl2 paste (pH) (units)
• pH_CaCl2_cond = pH by CaCl2 paste conditioned data (pH) (units)
• LOI_450C_% = Loss-on-ignition at 450°C (LOI) (%)
• Au_mgkg_ICPar = Gold by aqua regia with ICP finish (Au) (mg/kg)
• Ag_mgkg_ICPar = Silver by aqua regia with ICP finish (Ag) (mg/kg)
• Al_% = Aluminium by aqua regia with ICP finish (Al) (%)
• As_mgkg_ICPar = Arsenic by aqua regia with ICP finish (As) (mg/kg)
• B_mgkg_ICPar = Boron by aqua regia with ICP finish (B) (mg/kg)
• Ba_mgkg_ICPar = Barium by aqua regia with ICP finish (Ba) (mg/kg)
• Be_mgkg_ICPar = Beryllium by aqua regia with ICP finish (Be) (mg/kg)
• Bi_mgkg_ICPar = Bismuth by aqua regia with ICP finish (Bi) (mg/kg)
• Ca_% = Calcium by aqua regia with ICP finish (Ca) (%)
• Cd_mgkg_ICPar = Cadmium by aqua regia with ICP finish (Cd) (mg/kg)
• Ce_mgkg_ICPar = Cerium by aqua regia with ICP finish (Ce) (mg/kg)
• Co_mgkg_ICPar = Cobalt by aqua regia with ICP finish (Co) (mg/kg)
• Cr_mgkg_ICPar = Chromium by aqua regia with ICP finish (Cr) (mg/kg)
• Cs_mgkg_ICPar = Caesium by aqua regia with ICP finish (Cs) (mg/kg)
• Cu_mgkg_ICPar = Copper by aqua regia with ICP finish (Cu) (mg/kg)
• Fe_% = Iron by aqua regia with ICP finish (Fe) (%)
• Ga_mgkg_ICPar = Gallium by aqua regia with ICP finish (Ga) (mg/kg)
• Ge_mgkg_ICPar = Germanium by aqua regia with ICP finish (Ge) (mg/kg)
• Hf_mgkg_ICPar = Hafnium by aqua regia with ICP finish (Hf) (mg/kg)
• Hg_mgkg_ICPar = Mercury by aqua regia with ICP finish (Hg) (mg/kg)
• In_mgkg_ICPar = Indium by aqua regia with ICP finish (In) (mg/kg)
• K_% = Potassium by aqua regia with ICP finish (K) (%)
• La_mgkg_ICPar = Lanthanum by aqua regia with ICP finish (La) (mg/kg)
• Li_mgkg_ICPar = Lithium by aqua regia with ICP finish (Li) (mg/kg)
• Mg_% = Magnesium by aqua regia with ICP finish (Mg) (%)
• Mn_mgkg_ICPar = Manganese by aqua regia with ICP finish (Mn) (mg/kg)
• Mo_mgkg_ICPar = Molybdenum by aqua regia with ICP finish (Mo) (mg/kg)
• Na_% = Sodium by aqua regia with ICP finish (Na) (%)
• Nb_mgkg_ICPar = Niobium by aqua regia with ICP finish (Nb) (mg/kg)
• Ni_mgkg_ICPar = Nickel by aqua regia with ICP finish (Ni) (mg/kg)
• P_mgkg_ICPar = Phosphorus by aqua regia with ICP finish (P) (mg/kg)
• Pb_mgkg_ICPar = Lead by aqua regia with ICP finish (Pb) (mg/kg)
• Pd_mgkg_ICPar = Palladium by aqua regia with ICP finish (Pd) (mg/kg)
• Pt_mgkg_ICPar = Platinum by aqua regia with ICP finish (Pt) (mg/kg)
• Rb_mgkg_ICPar = Rubidium by aqua regia with ICP finish (Rb) (mg/kg)
• Re_mgkg_ICPar = Rhenium by aqua regia with ICP finish (Re) (mg/kg)
• S_% = Sulphur by aqua regia with ICP finish (S) (mg/kg)
• Sb_mgkg_ICPar = Antimony by aqua regia with ICP finish (Sb) (mg/kg)
• Sc_mgkg_ICPar = Scandium by aqua regia with ICP finish (Sc) (mg/kg)
• Se_mgkg_ICPar = Selenium by aqua regia with ICP finish (Se) (mg/kg)
• Sn_mgkg_ICPar = Tin by aqua regia with ICP finish (Sn) (mg/kg)
• Sr_mgkg_ICPar = Strontium by aqua regia with ICP finish (Sr) (mg/kg)
• Ta_mgkg_ICPar = Tantalum by aqua regia with ICP finish (Ta) (mg/kg)
• Te_mgkg_ICPar = Tellurium by aqua regia with ICP finish (Te) (mg/kg)
• Th_mgkg_ICPar = Thorium by aqua regia with ICP finish (Th) (mg/kg)
• Ti_% = Titanium by aqua regia with ICP finish (Ti) (%)
• Tl_mgkg_ICPar = Thallium by aqua regia with ICP finish (Tl) (mg/kg)
• U_mgkg_ICPar = Uranium by aqua regia with ICP finish (U) (mg/kg)
• V_mgkg_ICPar = Vanadium by aqua regia with ICP finish (V) (mg/kg)
• W_mgkg_ICPar = Tungsten by aqua regia with ICP finish (W) (mg/kg)
• Y_mgkg_ICPar = Yttrium by aqua regia with ICP finish (Y) (mg/kg)
• Zn_mgkg_ICPar = Zinc by aqua regia with ICP finish (Zn) (mg/kg)
• Zr_mgkg_ICPar = Zirconium by aqua regia with ICP finish (Zr) (mg/kg)

Credits		
Geological Survey Ireland.

Use limitations		
Data that is produced directly by the Geological Survey Ireland (GSI) is free for use under the conditions of Creative Commons Attribution 4.0 International license.
https://creativecommons.org/licenses/by/4.0/
https://creativecommons.org/licenses/by/4.0/legalcode

Under the CC-BY Licence, users must acknowledge the source of the Information in their product or application.
Please use this specific attribution statement: "Contains Irish Public Sector Data (Geological Survey Ireland) licensed under a Creative Commons Attribution 4.0 International (CC BY 4.0) licence.”
In cases where it is not practical to use the statement users may include a URL or hyperlink to a resource that contains the required attribution statement.

Extent		West	431,320.36
		East	619,608.83
		North	705,745.22
		South	597,403.86
(IRENET95 / Irish Transverse Mercator EPSG:2157)

Author		Tellus, Geological Survey Ireland | Aurum Exploration Ltd.

Survey Start Date	2023-06-12 
Survey End Date		2024-01-15

Publication Date	February 2026
Revision Date		N/A

Supporting documentation	Gallagher, V. Tellus geochemical survey: QA-QC for shallow topsoil data from the midlands-west of Ireland (G10 Block). Aurum Exploration Ltd., 2025

Contact		tellus@gsi.ie