Aquifers | Thermogis

ThermoGIS v2.3 shows the geothermal potential of 29 water-bearing layers or aquifers (reservoirs), five aggregate layers that consist of two or more aquifers (shown in column 'ThermoGIS period') and an overview layer covering all aquifers (see table below). The Nomenclature of the Deep Subsurface on the DinoLoket website provides more geological background on the aquifers.

Table 1 Designation of layers in ThermoGIS and DGM-Deep, and numbers of calibration wells used. No potential calculations were done for the Zeeland Formation because only the depth of the top and the thickness were mapped. More information about this unit can be found on the Dinantian page.
ThermoGIS ‘Period’	ThermoGIS ‘Aquifer’ (Formation/Member)	ThermoGIS code	wells (TG 2.1)	wells (TG 2.2)	wells (DGM Deep v5)	DGM Deep v5 unit (Group)
noThermoGIS aquifers					1641	Upper North Sea Group
Paleogene	Someren Memgber	NMVESO	19		3539	Middle North Sea Group
	Voort Member	NMVEVO	58
	Steensel Member	NMRUST	14
	Berg Member	NMRUBE	421
	Brussels Sand Member	NLDOBR	697	-		Lower North Sea Group
	Oosteind Member	NLDOOO	269
	Reusel Member	NLLARE	6
	Orp Member	NLLAOR	123
no ThermoGIS aquifers					2683	Chalk Group
Cretaceous	Holland and Spijkenisse Greensand Members	KNGLG and KNGLS	475	524	2740	Rijnland Group
	Gildehaus Sandstone Member	KNNSG	362	389
	De Lier Member	KNNSL	448	476
	IJsselmonde Sandstone Member	KNNSY	197	204
	Berkel Sandstone Member	KNNSB	67	100
	Rijswijk Member	KNNSR	212	243
	Friesland and Bentheim Members	KNNSF and KNNSP	392/736	370/749
Jurassic	Delft Sandstone Member	SLDND	136	84	778	Schieland Group
Jurassic	Alblasserdam Memeber	SLDNA	125	298	778	Schieland Group
noThermoGIS aquifers					-	Posidonia Shale Formation
no ThermoGIS aquifers					588	Altena Group
Triassic	Röt Fringe Member	RNROF	84	94	1016	Upper Germanic Trias Group
	Basal Solling Sandstone Member	RNSOB	419	477	1016	Upper Germanic Trias Group
	Hardegsen Formation	RBMH	87	100	1518	Lower Germanic Trias Group
	Upper Detfurth Sandstone Member	RBMDU	50	57
	Lower Detfurth Sandstone Member	RBMDL	263	280
	Upper Volpriehausen Sandstone Member	RBMVU	72	78
	Lower Volpriehausen Sandstone Member	RBMVL	525	607
	Nederweert Sandstone Formation	RBSHN	22	23
noThermoGIS aquifers					1830	Zechstein Group
Permian	Slochteren Formation and Upper Slochteren Member	ROSL and ROSLU	782/194	822/255	-	Upper Rotliegend Group
Permian	Lower Slochteren Member	ROSLL	127	163	-	Upper Rotliegend Group
Carboniferous	Hunze Subgroup (Strijen and De Lutte Formations)	DCH (DCHS and DCHL Formations)	21/82	-	-	Limburg Group
Carboniferous	Dinkel Subgroup (Hellevoetsluis and Tubbergen Formations)	DCD (DCDH and DCDT Formations)	16/131	-	-	Limburg Group
-	Zeeland Formation	CLZL	-	-	-	-