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NGR geochemical data

Format descriptor for regional lake sediment geochemical reconnaissance data

Table 1. Field observations legend
Field	Definition	Example
Uniq_ID	A unique identifier for each sample site. Uniq_ID combines NTS mapsheet and sample number	031C761002
Province	Abbreviated form of province or territory of Canada	ONT
GSC_OF	Original GSC open file release number	405
Medium	Type of sample material	Lake
NTS_Sht	National Topographic System (NTS); lettered quadrangle (1:250 000 or 1:50 000 scale)	031C
Smpl_Nu	Remainder of sample number:
	Year of collection	76
	Field crew	1
	Sample sequence number	002
Rep_Stat	Replicate status; relationship of the sample to others within the survey:
	Routine sample site	0
	First of a site duplicate pair	1
Latitud_NAD27	Latitude coordinate of sample site in decimal degrees (datum NAD 27).	44.85675
Longitud_NAD27	Longitude coordinate of sample site in decimal degrees (datum NAD 27).	-76.00232
Lk_Area	Area of the water body sampled:
	Pond	Pond
	¼ to 1 km²	0.25 - 1.0 sq km
	1 to 5 km²	1 - 5 sq km
	Greater than 5 km²	>5 sq km
Lk_Depth	Distance in metres from the surface of the lake to the bottom
Terr_Rlf	Relief of lake catchment basin:
	Low	Low
	Medium	Medium
	High	High
Contam	Contamination, human or natural:
	None	None
	Work	Work
	Camp	Camp
	Fuel	Fuel
	Gossan	Gossan
Sed_colo	Sediment sample colour; up to two colours may be selected:
	Tan	Tan
	Yellow	Yellow
	Green	Green
	Grey	Grey
	Brown	Brown
	Black	Black
Suspend	Suspended material in water:
	None	None
	Heavy	Heavy
	Light	Light

Terminology