Processed seismic data of Cruise BGR80 1980

During the cruise with S.V. EXPLORA within the Ross Sea on the second marine-geophysical expedition of the Federal Institute for Geosciences and Natural Resources (BGR) to Antarctica, in total 6,745 km of magnetic, gravity and digital reflection seismic lines and additionally 1,400 km gravity lines were acquired in the period from January 10th to March 2nd 1980. On 43 stations sonobuoy refraction measurements have been carried out. The main results are: (1) In the eastern part of the Ross Sea Shelf two striking discontinuities have been identified in the reflection seismics representing gaps in the sediments at the turn-over of the Upper Miocene to the Pliocene (ca. 7 mio years B.P.) and between the Middle and Upper Miocene (ca. 11.5 mio. years B.P.) according to results of DSDP boreholes. (2) In the southern part of the Ross Sea Shelf the basement is uncovered at depths over 700m due to a thrust of the shelf ice recently. (3) A structural unit extends alongside the meridian of 180° separating the Ross Sea into two different geologic regions. This unit is characterised by two basement highs with seismic velocities exceeding 5 km/sec. (4) In relation with the GANOVEX expedition two profiles have been measured off northern Victoria Land which indicate two large faults with a faulting amount of 2 km. Another area is characterised by intrusive and volcanic bodies.

Citation proposal
. Processed seismic data of Cruise BGR80 1980. https://gdk.gdi-de.org/geonetwork/srv/api/records/30b5e4d5-661b-4837-9126-26d0c312a69f

INSPIRE
SDS

INSPIRE

Identification

File identifier: 30b5e4d5-661b-4837-9126-26d0c312a69f XML

Hierarchy level: Dataset

Online resource

Resource identifier

code: 68d180de-f9c6-242f-e8d8-716bba000a36

Metadata language: English

Spatial representation type: Vector

Encoding

Format: Shapefile

Version: n/a

Projection

Classification of data and services

Topic category

Geoscientific information

Classification of data and services

Coupled resource

Classification of data and services

Coupled resource

Keywords

GEMET - INSPIRE themes, version 1.0 ( Theme )

Geologie
geology

GEMET - Concepts, version 2.4 ( Theme )

geophysics
Geophysik
raw material
Rohstoff

Other keywords

Keywords ( Theme )

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

Keywords ( Place )

Ross Sea
Ross-Meer

Geographic coverage

Temporal reference

Temporal extent

Date ( Creation ): 1980-03-02

Quality and validity

Lineage: During the period from 10th January to 2nd March 1980 BGR acquired seismic lines in the Ross Sea. The lines BGR80-005 and BGR80-006 consist of raw data. The lines BGR80-001, BGR80-002, BGR80-003, BGR80-004, BGR80-007A, BGR80-007B, BGR80-008A, BGR80-008B, BGR80-009, BGR80-010, BGR80-011, BGR80-100, BGR80-101, BGR80-102, BGR80-103, BGR80-104, BGR80-105, BGR80-106, BGR80-107, BGR80-108, BGR80-109 and BGR80-110 are stacked data.

Conformity

Explanation: siehe dazu die angegebene Durchführungsbestimmung

Restrictions on access and use

Access 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: BGR80 1980, (c) BGR, Hannover, 2019