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Selecting a surficial geochemistry survey method (view source)
Revision as of 14:09, 19 December 2014
, 14:09, 19 December 2014→Onshore methods
! Medium to be Sampled || Target to be Analyzed || Methods
! Medium to be Sampled || Target to be Analyzed || Methods
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| rowspan = 3 | Land surface || Oil and gas macroseeps, stains, impregnations || Geologic mapping; historical records; satellite and airborne sensors (multispectral, hyperspectral); direct sampling of seeps, stains
| rowspan = 3 | Land surface || Oil and gas macroseeps, stains, impregnations || Geologic mapping; historical records; [[Remote sensing|satellite and airborne sensors]] ([[Wikipedia:Multispectral image|multispectral]], [[Wikipedia:Hyperspectral imaging|hyperspectral]]); direct sampling of seeps, stains
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| Hydrocarbon micro seeps || Soil/sediment sampling for hydrocarbon analysis
| Hydrocarbon microseeps || Soil or sediment sampling for hydrocarbon analysis
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| Hydrocarbon-induced alteration || Soil/sediment sampling for indirect microbial or geochemical indicators, aeromagnetic, electrical, or radiometric
| Hydrocarbon-induced alteration || Soil or sediment sampling for indirect microbial or geochemical indicators, [[Magnetics#Aeromagnetic_surveys|aeromagnetic]], electrical, or radiometric
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| rowspan = 2 | Soil air || Light hydrocarbons || Probe or adsorptive collectors
| rowspan = 2 | Soil air || [ http://www.glossary.oilfield.slb.com/en/Terms.aspx?LookIn=term%20name&filter=light%20hydrocarbons Light hydrocarbons] || Probe or adsorptive collectors
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| Nonhydrocarbons || Probe or adsorptive collectors
| Nonhydrocarbons || Probe or adsorptive collectors
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| rowspan = 2 | Soil/sediment || Light hydrocarbons, aromatics || Sample disaggregation and/or acid extraction for chromatography, UV-fluorescence
| rowspan = 2 | Soil or sediment || Light hydrocarbons, [[Wikipedia:Aromatic hydrocarbon|aromatics]] || Sample disaggregation and/or acid extraction for chromatography, UV-fluorescence
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| Nonhydrocarbons or diagenetic anomalies || Hydrocarbon-oxidizing microbes, soil salts (i.e., carbonates, chloride, iodine, sulfate, etc.); clay minerals; trace metals; magnetic susceptibility, aeromagnetics, ground [[magnetics]]; electrical (IP, CSAMT, resistivity, MT); radiometrics
| Nonhydrocarbons or diagenetic anomalies || Hydrocarbon-oxidizing microbes, soil salts (i.e., carbonates, chloride, iodine, sulfate, etc.); clay minerals; trace metals; magnetic susceptibility, aeromagnetics, ground [[magnetics]]; electrical (IP, CSAMT, resistivity, MT); radiometrics