Processed seismic data of Cruise ME46 1977

During METEOR-Westafrica cruise 46, leg 1, geophysical measurements were carried out off Morocco between 31°30'N and 32°30'N in the time period from the 8th October to the 5th November 1977. Altogether 1,855 km of 24-fold reflection seismic data were collected on lines ME46-02 to ME46-11 and on lines ME46-14 to ME46-19. For the purpose of planning the programme, the reflection seismic data were processed (12-fold stack) aboard. 3,465 km of magnetic, gravimetric and bathymetric data were collected on lines ME46-01 to ME46-26 using the new BGR digital recording system. Along lines ME46-101 and ME46-102 with a total length of 209 km refraction seismic measurements were carried out with 6 moored telemetric buoys. A total of 164 shots with charges of 5 kg up to 200 kg were fired along the two lines in distances of about 1.5 km. A distinct fault zone was discovered in the area of investigation which is associated with a positive magnetic anomaly. The fault zone strikes NNE-SSW and probably marks the ocean-continent boundary. Beside diapiric structures (salt) allochthonous structures - thrust structures - are widespread features east of the discovered fault zone and below the lower continental slope. The seismic data indicate that the evolution of the old continental margin of the East Atlantic was also controlled by large scale gravity tectonics.

Citation proposal
. Processed seismic data of Cruise ME46 1977. https://gdk.gdi-de.org/geonetwork/srv/api/records/6f5d7176-cb85-44ac-989e-79fa7a7dba6b

Identification

Data identification

Citation

Alternate title: ME46 1977

Date ( Creation ): 1977-11-04

Identifier: ab6cf89b-95bf-cfc6-93c8-6586f39bb455

Status: completed Completed

Point of contact

Federal Institute for Geosciences and Natural Resources

Stilleweg 2 Hannover 30655

GEMET - INSPIRE themes, version 1.0 ( Theme )

Geologie
geology

GEMET - Concepts, version 2.4 ( Theme )

geophysics
Geophysik
raw material
Rohstoff

Keywords ( Theme )

Marine geology
Meeresgeologie
Seismics
Seismik
Two-dimensional seismic reflection
zweidimensionale Reflektionsseismik

Keywords ( Place )

Morocco
Marokko
Central East Atlantic
Zentraler Ostatlantik

Legal constraints

Access constraints: Other restrictions

Legal constraints

Use constraints: Other restrictions

Other constraints: Allgemeine Geschäftsbedingungen, siehe http://www.bgr.bund.de/AGB - General terms and conditions, see http://www.bgr.bund.de/AGB_en. Die bereitgestellten Informationen sind bei Weiterverwendung wie folgt zu zitieren: Datenquelle: ME46 1977, (c) BGR, Hannover, 1977

Spatial representation type: Vector

Metadata language: English

Character set: UTF8

Topic category

Geoscientific information

Distribution

Distribution format

Shapefile (n/a )

Digital transfer options

Transfer size: 1

OnLine resource: ME46 1977 (Shapefile)
ME46 1977 im Format ESRI Shape

OnLine resource: Karte im BGR-Geoviewer
Karte im BGR-Geoviewer

Quality

Data quality

Scope

Hierarchy level: Dataset

Conformance result

Citation

Date ( Publication ): 2010-12-08

Explanation: siehe dazu die angegebene Durchführungsbestimmung

Statement: During the period from the 8th October to the 5th November 1977 BGR acquired seismic lines off Morocco. All lines ME46-02 to ME46-19 consist of raw data.