Processed seismic data of Cruise ANT-IV/3 1986

On the F.S. POLARSTERN cruise ANT-IV/3 (6th December, 1985 - 13th March, 1986) multichannel seismic measurements were carried out in parallel with magnetic and gravimetric measurements on 33 lines with a total length of 6,263 km. 3,350 km of the multichannel seismic lines have been processed aboard. The geophysical studies were designed to investigate the structure and geological development of the Weddell Sea continental margin from meridians zero to 60°W, and to define suitable and safe drilling locations for Leg 113 of the Ocean Drilling Program. The main results of the geophysical studies are: (1) The discovery of an approximately N50°E trending failed drift basin, following the trend of a negative magnetic anomaly and a positive gravity anomaly. (2) The discovery of two extensive wedge-shaped and symmetric basement units around a failed drift basin between longitudes 40°W and 20°W. The seismic characteristics, i.e. seismic velocities of 4 km/s and an internally divergent pattern of reflectors suggest that both wedges are formed from extrusive/intrusive volcanic rocks. (3) The confirmation of a major plate tectonic boundary trending approximately N80°E to N60°E, i.e. the EXPLORA-ANDENES escarpment. (4) The confirmation of a glaciogenic progradational wedge beneath the shelf of the Weddell Sea Embayment, made up of several thousand metres of sediments. (5) The definition of 13 suitable and safe drilling locations for ODP-Leg 113.

Identification

Data identification

Citation

Alternate title

ANT-IV/3 1986
Date (Creation)
1986-03-13
Citation identifier
1692894b-6270-2a57-cccb-13a301e91531
Status
Completed
Point of contact
  Federal Institute for Geosciences and Natural Resources
Stilleweg 2 , Hannover , 30655 ,

GEMET - INSPIRE themes, version 1.0

  • Geologie

  • geology

GEMET - Concepts, version 2.4

  • geophysics

  • Geophysik

  • raw material

  • Rohstoff
Theme

  • Marine geology

  • Meeresgeologie

  • Seismics

  • Seismik

  • Two-dimensional seismic reflection

  • zweidimensionale Reflektionsseismik
Place

  • Weddell Sea

  • Weddell-Meer

Legal constraints

Access constraints
Other restrictions
Other constraints
Es gelten keine Zugriffsbeschränkungen

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: ANT-IV/3 1986, (c) BGR, Hannover, 2019

Spatial representation type
Vector
Language
English
Character set
UTF8
Topic category
  • Geoscientific information
N
S
E
W
thumbnail


 

Distribution

Distribution

Distribution format
  • Shapefile ( n/a )

Digital transfer options

Transfer size
2
OnLine resource
ANT-IV/3 1986 (Shapefile)

ANT-IV/3 1986 im Format ESRI Shape

OnLine resource
Profile ANT4-01
OnLine resource
Profile ANT4-02
OnLine resource
Profile ANT4-03
OnLine resource
Profile ANT4-04
OnLine resource
Profile ANT4-05
OnLine resource
Profile ANT4-06
OnLine resource
Profile ANT4-07
OnLine resource
Profile ANT4-08
OnLine resource
Profile ANT4-09
OnLine resource
Profile ANT4-10
OnLine resource
Profile ANT4-11
OnLine resource
Profile ANT4-12
OnLine resource
Profile ANT4-13
OnLine resource
Profile ANT4-14
OnLine resource
Profile ANT4-15
OnLine resource
Profile ANT4-16
OnLine resource
Profile ANT4-17
OnLine resource
Profile ANT4-18
OnLine resource
Profile ANT4-19
OnLine resource
Profile ANT4-21
OnLine resource
Profile ANT4-22
OnLine resource
Profile ANT4-23
OnLine resource
Profile ANT4-25
OnLine resource
Profile ANT4-26
OnLine resource
Profile ANT4-27
OnLine resource
Profile ANT4-28
OnLine resource
Profile ANT4-29
OnLine resource
Profile ANT4-30
OnLine resource
Profile ANT4-31
OnLine resource
Profile ANT4-32
OnLine resource
Profile ANT4-33
OnLine resource
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 6th December 1985 to 13th March 1986 BGR acquired seismic lines in the Weddell Sea. The lines ANT4-11A, ANT4-20 and ANT4-24 consist of raw data. The lines ANT4-10, ANT4-11, ANT4-16, ANT4-23, ANT4-26 and ANT4-30 are stacked data. The lines ANT4-01, ANT4-02, ANT4-03, ANT4-04, ANT4-05, ANT4-06, ANT4-07, ANT4-08, ANT4-09, ANT4-12, ANT4-13, ANT4-14, ANT4-15, ANT4-17, ANT4-18, ANT4-19, ANT4-21, ANT4-22, ANT4-25, ANT4-27, ANT4-28, ANT4-29, ANT4-31, ANT4-32 and ANT4-33 are migrated data.
 

Ref. system

Unique resource identifier
EPSG:4326
 

Metadata

Metadata

File identifier
ea39c67d-1539-4ace-8669-e294c71ae54f XML
Metadata language
English
Character set
UTF8
Parent identifier
Marine Seismic Survey Profiles (MSSP)

06a73c56-06a2-40d8-b806-466222b0760d
Hierarchy level
Dataset
Hierarchy level name

Geophysik
Date stamp
2023-11-14
Metadata standard name

INSPIRE Metadata Implementing Rules: Technical Guidelines based on EN ISO 19115 and EN ISO 19119
Metadata standard version

n/a
Point of contact
  Bundesanstalt für Geowissenschaften und Rohstoffe (BGR)
https://produktcenter.bgr.de
 
 

Overviews

overview

Spatial extent

N
S
E
W
thumbnail


Keywords

Marine geology Meeresgeologie Seismics Seismik Two-dimensional seismic reflection zweidimensionale Reflektionsseismik
GEMET - Concepts, version 2.4
Geophysik Rohstoff geophysics raw material
GEMET - INSPIRE themes, version 1.0
Geologie geology

Provided by

Access to the portal

Associated resources

Not available