Generalised geological map of Lower Saxony, 1 : 500 000
(GUEK500)
The 1 : 500 000 generalised geological map provides a state-wide overview of Lower Saxony's geological structure.\r\n\r\n
The mountainous country of southern Lower Saxony is composed of Palaeozoic and Mesozoic rocks. In the Harz mountains and the Osnabrück region the Palaeozoic basement is exposed. The oldest rock is the Ecker Gneis, which is assumed to be of Precambrian age. These are followed, separated by a hiatus, by the sediments of a Palaeozoic marine basin. Black Silurian shale, Devonian sandstone, slate, sill and reef carbonates were deposited; the Harz greywackes were laid down during the Upper Devonian and Lower Carboniferous. Basaltic lavas, today's diabases, were exuded on the sea bed. Cherts and iron ores are associated with these events. The entire sequence was folded during the Upper Carboniferous' Variscan orogeny, followed by upwelling of magmatic melts, now exposed in the Harzburger Gabbro, and the Brocken and Oker Granites. \r\n
During the Permian Rotliegend, erosional detritus collected in the mountain valleys. The Zechstein Sea flooded an existing peneplain and covered it with thick sequences of carbonates, gypsum and anhydrite, and salt. \r\n
During the Mesozoic the flat, occasionally dry basin was filled by Triassic sediments (Bunter Sandstone, Muschelkalk and Keuper), and then flooded again during the Jurassic and Cretaceous. The Mesozoic sequence was ruptured along deep fault systems in a period of tectonic disturbance (Upper Jurassic to Cretaceous). The Zechstein salt reacted plastically and rose along these faults. The result is the Saxonian faulting of the overlying rock. \r\n
The peneplain was flooded once again during the Tertiary, depositing sand and clay, while further inland lignite formed from time to time. Finally, the sea retreated to the region of today's North Sea. \r\n
The Quaternary is characterised by numerous shifts between glacials and interglacials. In the mid-Pleistocene large parts of Lower Saxony were covered by glaciers during the Elster and Saale glacials; the ice left behind ist ground moraines (boulder clay) and meltwater deposits (gravel, sand and clay). In the warm periods (interglacials) and the post-ice age (Holocene) peats, muds and marls were deposited. Some coastal regions were flooded and covered by marine, tidal mud and brackish water deposits.
Additional documents
Informations about data
Contact person
Phone:
+49 (0)511-643-3161
Fax:
+49 (0)511-643-534015
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
- Ausdruck (hardcopy)
- CD-ROM (cdRom)
- 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
- 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:
4559
- Spacial notation:
vector
- Eastern longitude:
6.5043
to
11.6532
- Northern latitude:
51.2737
to
53.9523
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