British Geological Survey (BGS) Geophysical and Sampling Survey 1968/5: Sea of the Hebrides and The Minch (20/Sep/1968 to 03/Nov/1968)

This sampling and geophysical survey has been carried out by British Geological Survey (BGS) for BGS, the survey took place in September to November 1968 in the Sea of the Hebrides and the Minch on board the RRS John Murray. These purpose was to collect data to investigate the sub-surface geological structure and sea-bed geology additional geophysical observations were planned for the return passage to Plymouth including a detailed survey of a small area in the southern Irish Sea (see 1968/Passage survey for details). Sea floor data were collected using echo sounder. Sub-bottom profiling data were collected using sparker and sidescan sonar. Gravity meter and magnetometer data were collected. Sample data were collected using shipek grab, sediment dredge,rock dredge and scuba diving. These data are archived by BGS. Technical details of the survey are contained in BGS report WB/MG/68/28.

Simple

Alternate title

JM10/68
Date (Publication)
1968-11-03
Citation identifier
British Geological Survey / BGS_CMD_REF9
Point of contact
Organisation name Individual name Electronic mail address Role

British Geological Survey (BGS)

enquiries@bgs.ac.uk

Custodian

British Geological Survey (BGS)

offshoredata@bgs.ac.uk

Originator
Maintenance and update frequency
Not planned
Keywords

GEMET - INSPIRE themes, version 1.0

SeaVoX Vertical Co-ordinate Coverages (L131)

SeaDataNet Parameter Discovery Vocabulary (P021)
Access constraints
Other restrictions
Access constraints
No restrictions, a copyright acknowledgement is required and permission from any third party for the release of the data has been obtained. Inclusion of any third party data will determine the copyright acknowledgement that needs to be made.
Use constraints
Other restrictions
Other constraints

The copyright of materials derived from the British Geological Survey's work is vested in the Natural Environment Research Council [NERC]. No part of this work may be reproduced or transmitted in any form or by any means, or stored in a retrieval system of any nature, without the prior permission of the copyright holder, via the BGS Intellectual Property Rights Manager. Use by customers of information provided by the BGS, is at the customer's own risk. In view of the disparate sources of information at BGS's disposal, including such material donated to BGS, that BGS accepts in good faith as being accurate, the Natural Environment Research Council (NERC) gives no warranty, expressed or implied, as to the quality or accuracy of the information supplied, or to the information's suitability for any use. NERC/BGS accepts no liability whatever in respect of loss, damage, injury or other occurence however caused.

Use limitation

unrestricted use, copyright acknowledgement - Available under the Open Government Licence subject to the following acknowledgement accompanying the reproduced British Geological Survey materials "Contains British Geological Survey materials ©UKRI [year]"

Spatial representation type
Grid
Distance
5  urn:ogc:def:uom:EPSG::9001
Language
English
Topic category
  • Geoscientific information
Geographic identifier
Malin

BGS Gazetteer 2025-05-12 revision

Geographic identifier
Peach

BGS Gazetteer 2025-05-12 revision

Geographic identifier
Tiree

BGS Gazetteer 2025-05-12 revision

Geographic identifier
Argyll

BGS Gazetteer 2025-05-12 revision

Geographic identifier
Little Minch

BGS Gazetteer 2025-05-12 revision

Geographic identifier
Great Glen

BGS Gazetteer 2025-05-12 revision

Geographic identifier
Lewis

BGS Gazetteer 2025-05-12 revision

Geographic identifier
Sutherland

BGS Gazetteer 2025-05-12 revision

Geographic identifier
North Rockall Basin

BGS Gazetteer 2025-05-12 revision

Geographic identifier
Central Rockall Basin

BGS Gazetteer 2025-05-12 revision

Geographic identifier
Scottish Continental Shelf

Charting Progress 2: Regional Sea Boundaries 2009-06-18 creation

Geographic identifier
Minches & Western Scotland

Charting Progress 2: Regional Sea Boundaries 2009-06-18 creation

Geographic identifier
INNER SEAS OFF THE WEST COAST OF SCOTLAND

The SeaVoX Salt and Fresh Water Body Gazetteer: Sub-Ocean Category 1954-01-01 creation

Geographic identifier
NORTHEAST ATLANTIC OCEAN (40W)

The SeaVoX Salt and Fresh Water Body Gazetteer: Sub-Ocean Category 1954-01-01 creation

N
S
E
W
thumbnail




Begin date
1968-09-20
End date
1968-11-03
Reference system identifier
OGP / urn:ogc:def:crs:EPSG::4326

www.epsg.org 2005 revision

Distribution format
    Distributor contact
    Organisation name Individual name Electronic mail address Role

    British Geological Survey (BGS)

    enquiries@bgs.ac.uk

    		Distributor
    OnLine resource
    Protocol Linkage Name

    HTTP

         		http://mapapps2.bgs.ac.uk/geoindex_offshore/home.html?cruise=1968/5

    BGS Offshore Geoindex
    Hierarchy level
    Dataset

    Conformance result

    Title

    INSPIRE Implementing rules laying down technical arrangements for the interoperability and harmonisation of unknown theme
    Date (Publication)
    2011
    Explanation

    See the referenced specification
    Pass
    No
    Statement

    Geophysical equipment types used included: Echo Sounder, Gravimeter, Magnetometer, Pinger, Sidescan Sonar and Sparker. Sample equipment types used included: Corer: Sediment Gravity, Diver Collected, Dredge: Rock, Dredge: Sediment or Shell and Grab: Shipek. The survey was undertaken by British Geological Survey. For more detailed information on the acquisition equipment and data collection techniques, operational standards, data processing methods and quality control procedures used on this survey see the Report of Survey/Cruise Report and associated documentation where available. The information available may vary depending on the age of the survey. Data are checked and loaded to the BGS Coastal and Marine data management system following BGS marine data management procedures. Report: McQullian, R, Eden, RA, and Tully, MC. 1968. Geophysical and Geological Investigations in the Sea of the Hebrides and Minch. MGU Project 68/05. (IGS Report No 28). Positioning systems: Two Decca Mk 12 receivers one operated on Decca Chain 3B/MP and the other on Decca Chain 6C/MP. In general and particularly at night the 3B signal was more stable that the 6C signal. Niether was completely satisfactory and the positioning was suplemented by radar and visual sitings. The positions were logged manually every 10 minutes. Echo sounder system: Kelvin Hughes MS 38 Precision Depth Recorder. Sparker system: 3-candle sparker array unit with a EG&G 16-element hydrophone array type 263A. The sparker was run at 1000 Joules, a 1 second firing rate and a print sweep of 0.5 seconds. External and internal band-pass filters were applied usually in the 100-800kHz range. Pinger system: EG&G 5kHz pinger was used with a single element EG&G type 262 G hydrophone. Side-scan system: EG&G side-scan sonar. Optimum setting 500ft scan. Gravity meter: Askania Sea Grvaity Meter type Gss-2 No 11 Magnetometer: Varian proton magnetometer. Report: McQullian, R, Eden, RA, and Tully, MC. 1968. Geophysical and Geological Investigations in the Sea of the Hebrides and Minch. MGU Project 68/05. (IGS Report No 28) .

    Metadata

    File identifier
    abc9f747-546c-0f38-e044-0003ba9b0d98 XML
    Metadata language
    English
    Hierarchy level
    Dataset
    Date stamp
    2025-05-12
    Metadata standard name

    MEDIN Discovery Metadata Standard
    Metadata standard version

    Version 2.3.5
    Metadata author
    Organisation name Individual name Electronic mail address Role

    British Geological Survey (BGS)

    enquiries@bgs.ac.uk

    		Point of contact
     
     

    Overviews

    Spatial extent

    thumbnail

    Keywords



    Provided by

    Share on social sites

    Access to the catalogue