Data

Holocene evolutionary history and accumulation rates for the granite based Lizard Island Fringing Reef System, Northern Great Barrier Reef

Australian Ocean Data Network
Rees, Siwan ; Opdyke, Bradley, Dr ; Wilson, Paul, Professor
Viewed: [[ro.stat.viewed]] Cited: [[ro.stat.cited]] Accessed: [[ro.stat.accessed]]
ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=https://catalogue.aodn.org.au:443/geonetwork/srv/api/records/fdbed170-cafd-11dc-82dd-00188b4c0af8&rft.title=Holocene evolutionary history and accumulation rates for the granite based Lizard Island Fringing Reef System, Northern Great Barrier Reef&rft.identifier=https://catalogue.aodn.org.au:443/geonetwork/srv/api/records/fdbed170-cafd-11dc-82dd-00188b4c0af8&rft.description=Lizard Island is located in the Northern Great Barrier Reef province, approximately 270km north of Cairns. Reef drilling was undertaken to investigate the Holocene evolution of the fringing reefs of Lizard Island. Radiocarbon dating of the cored coral material was then used to establish the chronology of the reef and to quantify the rate of development. Three drill cores were extracted, all from the windward margin because the leeward margin was too deep to access and did not form a conventional reef flat margin. The maximum depth reached was 4.5 m in core L1, with cores L2 and L3 being abandoned after encountering thick sand layers. The cores were logged and photographed, and thin sections were made and petrographically examined. Corals that were determined to be in situ (by the orientation of their corallites) and free from internal cement and detritus by microscope examination were selected for radiocarbon dating. Radiocarbon dates indicate that the fringing reef at Lizard Island started growing directly on an assumed granite basement approximately 6.7 cal kyr BP at approximately 4.5 m below the reef flat surface. The windward margin at Lizard Island approached modern day sea level approximately 4 cal kyr BP. Rates of vertical accretion ranged from 0.5 to 0.7 m/kyr at Lizard Island.Maintenance and Update Frequency: notPlannedStatement: Reef cores were obtained using a hydraulic rotary drill with diamond and tungsten drill heads (3.5 cm diameter) powered by a petrol generator. The drill string was constructed of 1 and 1.5 m long rods and the whole system was flushed with seawater to aid drilling using a petrol generated water pump. Cored material was recovered every 0.1 to 0.2m, by manually removing the entire drill stream from the core hole. Accelerator Mass Spectrometry (AMS) radiocarbon dating was performed at the Department of Nuclear Physics, Australian National University, Canberra. The dates were corrected for isotopic fractionation and the marine reservoir effect (North East Australia, delta R = 10 ± 7) and converted to calendar years using the CALIB 4.4 software programme. Errors are at 1 sigma.Statement: Parameters: Reef, core number, margin of island, latitude and longitude coordinates (decimal degrees), depth below surface (metres), conventional radiocarbon age (yrs BP), calibrated age (cal yrs BP), rate of vertical accretion (m/kyr).&rft.creator=Rees, Siwan &rft.creator=Opdyke, Bradley, Dr &rft.creator=Wilson, Paul, Professor &rft.date=2008&rft.coverage=145.458,-14.699 145.458,-14.7041 145.466,-14.7038 145.466,-14.6984 145.458,-14.699&rft.coverage=westlimit=143; southlimit=-15; eastlimit=145.5; northlimit=-11&rft.coverage=westlimit=143; southlimit=-15; eastlimit=145.5; northlimit=-11&rft.coverage=uplimit=4.5; downlimit=0&rft.coverage=uplimit=4.5; downlimit=0&rft_rights=Creative Commons Attribution 2.5 Australia License http://creativecommons.org/licenses/by/2.5/au/&rft_rights=The citation in a list of references is: citation author name/s (year metadata published), metadata title. Citation author organisation/s. File identifier and Data accessed at (add http link).&rft_rights=Please contact Dr Opdyke for access to the full dataset.&rft_subject=geoscientificInformation&rft_subject=Oceans | Ocean Chemistry | Carbonate Sediments&rft_subject=CARBONATE&rft_subject=EARTH SCIENCE&rft_subject=OCEANS&rft_subject=OCEAN CHEMISTRY&rft_subject=CORAL REEFS&rft_subject=COASTAL PROCESSES&rft_subject=latitude&rft_subject=longitude&rft_subject=depth&rft_subject=conventional_radiocarbon_age&rft_subject=calibrated_age&rft_subject=rate_of_vertical_accretion&rft.type=dataset&rft.language=English Access the data
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The citation in a list of references is: citation author name/s (year metadata published), metadata title. Citation author organisation/s. File identifier and Data accessed at (add http link).

Please contact Dr Opdyke for access to the full dataset.

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Brief description

Lizard Island is located in the Northern Great Barrier Reef province, approximately 270km north of Cairns. Reef drilling was undertaken to investigate the Holocene evolution of the fringing reefs of Lizard Island. Radiocarbon dating of the cored coral material was then used to establish the chronology of the reef and to quantify the rate of development. Three drill cores were extracted, all from the windward margin because the leeward margin was too deep to access and did not form a conventional reef flat margin. The maximum depth reached was 4.5 m in core L1, with cores L2 and L3 being abandoned after encountering thick sand layers. The cores were logged and photographed, and thin sections were made and petrographically examined. Corals that were determined to be in situ (by the orientation of their corallites) and free from internal cement and detritus by microscope examination were selected for radiocarbon dating. Radiocarbon dates indicate that the fringing reef at Lizard Island started growing directly on an assumed granite basement approximately 6.7 cal kyr BP at approximately 4.5 m below the reef flat surface. The windward margin at Lizard Island approached modern day sea level approximately 4 cal kyr BP. Rates of vertical accretion ranged from 0.5 to 0.7 m/kyr at Lizard Island.

Lineage

Maintenance and Update Frequency: notPlanned
Statement: Reef cores were obtained using a hydraulic rotary drill with diamond and tungsten drill heads (3.5 cm diameter) powered by a petrol generator. The drill string was constructed of 1 and 1.5 m long rods and the whole system was flushed with seawater to aid drilling using a petrol generated water pump. Cored material was recovered every 0.1 to 0.2m, by manually removing the entire drill stream from the core hole. Accelerator Mass Spectrometry (AMS) radiocarbon dating was performed at the Department of Nuclear Physics, Australian National University, Canberra. The dates were corrected for isotopic fractionation and the marine reservoir effect (North East Australia, delta R = 10 ± 7) and converted to calendar years using the CALIB 4.4 software programme. Errors are at 1 sigma.
Statement: Parameters: Reef, core number, margin of island, latitude and longitude coordinates (decimal degrees), depth below surface (metres), conventional radiocarbon age (yrs BP), calibrated age (cal yrs BP), rate of vertical accretion (m/kyr).

Notes

Credit
National Environment Research Council (NERC)
Credit
National Oceanography Centre (Southampton, UK)
Credit
The Australian National University (ANU)
Credit
The Royal Geographic Society
Credit
The Royal Society
Credit
Shoals of Capricorn Marine Research Program
Credit
Lizard Island Research Station and Staff (owned by Australian Museum)
Credit
Great Barrier Reef Marine Park Authority
Purpose
To examine the role of coral reefs in the oceanic carbonate budget and global carbon cycle both spatially and temporally during the Holocene.

Issued: 25 01 2008

Data time period: 2003-01 to 2003-09

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145.458,-14.699 145.458,-14.7041 145.466,-14.7038 145.466,-14.6984 145.458,-14.699

145.462,-14.70125

145.5,-11 145.5,-15 143,-15 143,-11 145.5,-11

144.25,-13

text: westlimit=143; southlimit=-15; eastlimit=145.5; northlimit=-11

text: uplimit=4.5; downlimit=0

Subjects
Carbonate | COASTAL PROCESSES | Coral Reefs | EARTH SCIENCE | OCEAN CHEMISTRY | OCEANS | Oceans | Ocean Chemistry | Carbonate Sediments | calibrated_age | conventional_radiocarbon_age | depth | geoscientificInformation | latitude | longitude | rate_of_vertical_accretion |

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  • global : fdbed170-cafd-11dc-82dd-00188b4c0af8
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