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

Simple

Alternate title: BGR80 1980

Date ( Creation ): 1980-03-02

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

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 )

Ross Sea
Ross-Meer

Access constraints: Other restrictions

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

Spatial representation type: Vector

Metadata language: English

Character set: UTF8

Topic category

Geoscientific information

Distribution format

Shapefile (n/a )

Transfer size: 2

OnLine resource: BGR80 1980 (Shapefile)
BGR80 1980 im Format ESRI Shape

OnLine resource: Profile BGR80-001
Profile BGR80-001

OnLine resource: Profile BGR80-002
Profile BGR80-002

OnLine resource: Profile BGR80-003
Profile BGR80-003

OnLine resource: Profile BGR80-004
Profile BGR80-004

OnLine resource: Profile BGR80-007A
Profile BGR80-007A

OnLine resource: Profile BGR80-007B
Profile BGR80-007B

OnLine resource: Profile BGR80-008A
Profile BGR80-008A

OnLine resource: Profile BGR80-008B
Profile BGR80-008B

OnLine resource: Profile BGR80-009
Profile BGR80-009

OnLine resource: Profile BGR80-010
Profile BGR80-010

OnLine resource: Profile BGR80-011
Profile BGR80-011

OnLine resource: Profile BGR80-100
Profile BGR80-100

OnLine resource: Profile BGR80-101
Profile BGR80-101

OnLine resource: Profile BGR80-102
Profile BGR80-102

OnLine resource: Profile BGR80-103
Profile BGR80-103

OnLine resource: Profile BGR80-104
Profile BGR80-104

OnLine resource: Profile BGR80-105
Profile BGR80-105

OnLine resource: Profile BGR80-106
Profile BGR80-106

OnLine resource: Profile BGR80-107
Profile BGR80-107

OnLine resource: Profile BGR80-108
Profile BGR80-108

OnLine resource: Profile BGR80-109
Profile BGR80-109

OnLine resource: Profile BGR80-110
Profile BGR80-110

Hierarchy level: Dataset

Conformance result

Date ( Publication ): 2010-12-08

Explanation: siehe dazu die angegebene Durchführungsbestimmung

Statement: 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.