Seismic refraction - a tool for studying coral reef growth

Seismic refraction studies have been conducted in close proximity to shallow boreholes previously drilled at Bewick (Northern Great Barrier Reef), Hayman (Central Great Barrier Reef) and Heron Islands (Southern Great Barrier Reef). Results show a seismic discontinuity at depths similar to the unconformity separating Holocene and pre-Holocene carbonates in the boreholes. Extensive seismic refraction studies have been conducted in the Capricorn/Bunker Reefs to assess the effects of substrate on modern reef growth, and the classification of modern reefs in the area. One hundred and twenty-four profiles were completed on six reefs. A marked seismic discontinuity, detected at depths ranging from 8-23 m, is equated with the Holocene/ pre-Holocene unconformity identified in the boreholes. Results show that the pre-Holocene surface forms a central depression with a raised rim around the perimeter beneath those reefs which have lagoons. This also appears to be the case beneath those reefs which presently have small or no lagoons, the inference being that Holocene sedimentation and growth have infilled the original depressions. The geophysical evidence does not support the claim that reefs of the southern Great Barrier Reef follow a latitudinal genetic sequence, but rather that the varied growth forms of the Holocene reefs have been determined to a considerable extent by the shape of the pre-Holocene surface.

Simple

Identification info

Date (Publication)
1979-01-01T00:00:00
Citation identifier
Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/80995

Cited responsible party
Role Organisation / Individual Name Details
Publisher

Bureau of Mineral Resources, Geology and Geophysics

 Canberra
Author

Harvey, N.

 1
Author

Davies, P.J.

 2
Author

Marshall, J.F.

 3
Name

BMR Journal of Australian Geology and Geophysics

Issue identification

4:2:141-147

Point of contact
Role Organisation / Individual Name Details
Custodian

Corp
Owner

Commonwealth of Australia (Geoscience Australia)
Custodian

Commonwealth of Australia (Geoscience Australia)

 Voice
Topic category
  • Geoscientific information

Extent

N
S
E
W


Maintenance and update frequency
Unknown

Resource format

Title

Product data repository: Various Formats

Website

Data Store directory containing the digital product files

Data Store directory containing one or more files, possibly in a variety of formats, accessible to Geoscience Australia staff only for internal purposes

Keywords

  • GA Publication

  • Journal

Theme

  • marine

Keywords

  • QLD

Australian and New Zealand Standard Research Classification (ANZSRC)

  • Earth Sciences

Keywords

  • Published_External

Resource constraints

Title

Creative Commons Attribution 4.0 International Licence

Alternate title

CC-BY

Edition

4.0

Website

http://creativecommons.org/licenses/

Access constraints
License
Use constraints
License

Resource constraints

Title

Australian Government Security ClassificationSystem

Edition date
2018-11-01T00:00:00
Website

https://www.protectivesecurity.gov.au/Pages/default.aspx

Classification
Unclassified
Language
English
Character encoding
UTF8

Distribution Information

Distributor contact
Role Organisation / Individual Name Details
Distributor

Commonwealth of Australia (Geoscience Australia)

 Voice
OnLine resource

Journal article (pdf)

Journal article (pdf)

Distribution format

  • pdf

Resource lineage

Statement

Unknown

Hierarchy level
Non geographic dataset
Other

GA Publication

Description

Source data not available.

Metadata constraints

Title

Australian Government Security ClassificationSystem

Edition date
2018-11-01T00:00:00
Website

https://www.protectivesecurity.gov.au/Pages/default.aspx

Classification
Unclassified

Metadata

Metadata identifier
urn:uuid/fae9173a-6fc0-71e4-e044-00144fdd4fa6

Title

GeoNetwork UUID

Language
English
Character encoding
UTF8
Contact
Role Organisation / Individual Name Details
Point of contact

Commonwealth of Australia (Geoscience Australia)

 Voice

Type of resource

Resource scope
Document
Name

AGSO BMR Journal

Alternative metadata reference

Title

Geoscience Australia - short identifier for metadata record with

uuid

Citation identifier
eCatId/80995

Metadata linkage

https://ecat.ga.gov.au/geonetwork/srv/eng/catalog.search#/metadata/fae9173a-6fc0-71e4-e044-00144fdd4fa6

Date info (Revision)
2018-04-20T06:10:15
Date info (Creation)
2014-06-03T00:00:00

Metadata standard

Title

AU/NZS ISO 19115-1:2014

Metadata standard

Title

ISO 19115-1:2014

Metadata standard

Title

ISO 19115-3

Title

Geoscience Australia Community Metadata Profile of ISO 19115-1:2014

Edition

Version 2.0, September 2018

Citation identifier
https://pid.geoscience.gov.au/dataset/ga/122551

 
 

Spatial extent

N
S
E
W


Keywords

marine

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Access to the portal

Associated resources

Not available