Generalised hydrogeological map of Lower Saxony, 1 : 500 000 - Shallow rock aquifer types
(HUEK500GWL)
The map shows the shallow rock aquifer types at a scale of 1 : 500 000.
The rock units in the generalised geological map are divided into three classes, describing the principal aquifer properties: pore aquifers, joint aquifers and aquitards.
- Pore aquifers:
These unconsolidated sedimentary rocks predominantly consist of the coarser gravel and sand grain components and have a contiguous pore volume, comprising between 10 and 35% of the rock mass volume, depending on the specific composition. Groundwater can move easily through these rocks, is relatively uniformly distributed and forms a pronounced groundwater surface, which can be easily exposed in wells.
- Aquitards:
Rocks with very low effective void space and dense rock mass can only store or transport groundwater in very small quantities. Fine-grained unconsolidated and consolidated rocks (clayey, silty), and very sparsely jointed, dense vulcanites and magmatites act as aquitards. The clayey rocks have a high primary porosity of over 30%, but this is not available for groundwater transport due to the strong capillary forces acting within the pores.
- Joint aquifers:
These consolidated, compact rocks, predominantly the result of the diagenesis of sediments, were subsequently jointed and faulted to varying degrees by tectonic stresses. This secondary pore volume only occupies a small percentage of the overall rock volume, but can facilitate relatively fast groundwater transport. The primary pore volume in these rocks has been substantially reduced by diagenetic processes.
This map was created by re-attributing the contents of the 1 : 500 000 generalised geological map of Lower Saxony and therefore generally only covers a depth range down to approximately 2 m below grade. Information on the properties of deeper strata cannot be obtained from this map.
Additional documents
Informations about data
- Editing state:
Erfassung bzw. Erstellung der Daten ist abgeschlossen (completed).
- Date of last publication:
30.04.2000
- Date of creation:
01.02.2000
- Information about data origin:
An Datengrundlagen sind eingegangen:
- Geologische Übersichtskarte 1:500 000
- Bohrungen der Bohrdatenbank Niedersachsen
- Bewertungsschema zur Klassifikation der Gesteinseinheiten
Die hier vorliegende Karte entstand durch eine Umattributierung der Inhalte der Geologischen Übersichtskarte von Niedersachsen 1 : 500 000 und berücksichtigt somit in der Regel nur einen Tiefenbereich von ca. 2 m unter Geländeoberkante.
Contact person
Phone:
+49 (0)511-643-3613
Fax:
+49 (0)511-643-533613
Online access to data
To access the data online you can use the following applications/services:
Distribution information
Common informations (order proccess, product choise, prices):
NIBIS-Preisliste, AGB, Vergütungsverzeichnis für Leistungen des LBEG, Bestellhinweise (https://www.lbeg.niedersachsen.de/portal/live.php?navigation_id=613&article_id=905&_psmand=4); Produktkatalog des LBEG (https://www.lbeg.niedersachsen.de/download/1238)
Data formats
- ArcGIS-Shapefile
(
Version:
inapplicable)
- JPEG
(
Version:
inapplicable)
- PDF
(
Version:
inapplicable)
- TIFF
(
Version:
inapplicable)
Data medium
- CD-ROM (cdRom)
- Ausdruck (hardcopy)
- DVD (dvd)
Distribution contact
Phone:
+49 (0)511-643-3354
Fax:
+49 (0)511-643-533354
Additional information about the data
- Format of data:
digitale Karte in Raster- oder Vektorform (mapDigital)
- Topic:
Geowissenschaften
(geoscientificInformation)
- Key words:
NIBIS-Metadaten, inspireidentifiziert, sgd_Hydrogeologie
- Key words GEMET:
Geology
- Thesaurus name:
GEMET - INSPIRE themes, version 1.0
- Thesaurus date of puplication:
2008-06-01
- Geometry type:
Fläche (surface)
- Scale:
1:500000
- Coordinate system:
4647; ETRS89 / UTM zone 32N (zE-N)
(Europäisches Terrestrisches Referenzsystem von 1989 / Universale Transversale Mercatorabbildung Zone 32N)
- Altitude reference system:
DE_DHHN92_NH
- Reference layer:
Datenbestand (dataset )
- Language:
ger
- Character set:
utf8
Access- and security restrictions
- Security classification:
unbeschränkt (unclassified)
- Access restriction:
Urheberrecht (copyright)
- Restriction of application:
Allgemeine Geschäftsbedingungen -AGB- des Landesamtes für Bergbau, Energie und Geologie (LBEG) und die Anlage Vergütungsverzeichnis für Leistungen des LBEG
Information about content (auto detected)
- Amount datasets/features:
4621
- Spacial notation:
vector
- Eastern longitude:
6.5475
to
11.7416
- Northern latitude:
51.225
to
53.9343
About this data description
- Metadata standard:
Standard
ISO 19115
,
version
ISO 19115:2003/Cor. 1:2006 (E)
- Metadata status:
05.09.2022
- Metadata language:
ger
- Metadata character code:
utf8
Metadata contact