Data

Determining the grainsize of sediment with increasing depth in core GC11, located in the Capricorn Channel

Australian Ocean Data Network
Bostock, Helen ; Opdyke, Bradley, Dr
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/7e485510-2477-11dc-95fb-00188b4c0af8&rft.title=Determining the grainsize of sediment with increasing depth in core GC11, located in the Capricorn Channel&rft.identifier=https://catalogue.aodn.org.au:443/geonetwork/srv/api/records/7e485510-2477-11dc-95fb-00188b4c0af8&rft.description=A gravity core (GC11) was collected from a depth of 502 mbsl within the Capricorn Channel, southern Great Barrier Reef (GBR). Samples were separated into different size fractions to determine the % of each grainsize at each sample depth. Although not overly accurate, the information is correlated with analyses of other parameters to impart clues to the environmental changes within the core. The smallest size fraction (Maintenance and Update Frequency: notPlannedStatement: Samples were dried in the oven at 60oC before being re-soaked in distilled water. Samples were then wet sieved through a series of four mesh sizes (400µm, 300µm, 200µm and 100µm). Once the size fractions within the sample were separated into a series of beakers, the excess water was siphoned off using a syringe before being transferred to drying trays. After drying the size fractions were weighed to determine the % of each grainsize from the overall collected dry sample.Statement: Because of the seive mesh sizes, the samples were splits in 5 groups dependent on grainsize: >400µm, 400-300µm, 300-200µm, 200-100µm and &rft.creator=Bostock, Helen &rft.creator=Opdyke, Bradley, Dr &rft.date=2007&rft.coverage=153.36627,-23.38420 153.36699,-23.38428 153.36696,-23.38481 153.36632,-23.38482 153.36627,-23.38420&rft.coverage=westlimit=151.5; southlimit=-24.5; eastlimit=153; northlimit=-23&rft.coverage=westlimit=151.5; southlimit=-24.5; eastlimit=153; northlimit=-23&rft.coverage=uplimit=502; downlimit=502&rft.coverage=uplimit=502; downlimit=502&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_subject=geoscientificInformation&rft_subject=Oceans | Marine Sediments | Sediment Grain Size&rft_subject=core_depth&rft_subject=grainsize_size_category&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).

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A gravity core (GC11) was collected from a depth of 502 mbsl within the Capricorn Channel, southern Great Barrier Reef (GBR). Samples were separated into different size fractions to determine the % of each grainsize at each sample depth. Although not overly accurate, the information is correlated with analyses of other parameters to impart clues to the environmental changes within the core. The smallest size fraction (<100µm) dominates at all depths, and is particularly pronounced during glacial periods, at 460cm (MIS 10) and at 330cm (MIS 8).

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Maintenance and Update Frequency: notPlanned
Statement: Samples were dried in the oven at 60oC before being re-soaked in distilled water. Samples were then wet sieved through a series of four mesh sizes (400µm, 300µm, 200µm and 100µm). Once the size fractions within the sample were separated into a series of beakers, the excess water was siphoned off using a syringe before being transferred to drying trays. After drying the size fractions were weighed to determine the % of each grainsize from the overall collected dry sample.
Statement: Because of the seive mesh sizes, the samples were splits in 5 groups dependent on grainsize: >400µm, 400-300µm, 300-200µm, 200-100µm and <100µm. Values are provided as a percentage of the total dry weight. Samples were analysed for 5cm, 10cm, 15cm, 20cm and then every 10cm down the core to a depth of 560cm. The percentage values for grainsize at each sample depth are not accurate. This is due to wastage during washing and sieving and occasional spills. Parameters: Depth through core (cm), grainsize (µm), percentage of total dry mass at each sample depth (%).

Notes

Credit
Funded by The Australian Research Council (ARC)
Credit
Funded by The Australian National University (ANU) Faculties Research Grant Scheme
Purpose
To determine the sedimentological variations with sea-level over the last glacial/ interglacial cycle in the Capricorn Channel. Very little previous work has been undertaken within this area.

Issued: 27 06 2007

Data time period: 1997 to 1997

This dataset is part of a larger collection

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153.36627,-23.3842 153.36699,-23.38428 153.36696,-23.38481 153.36632,-23.38482 153.36627,-23.3842

153.36663,-23.38451

153,-23 153,-24.5 151.5,-24.5 151.5,-23 153,-23

152.25,-23.75

text: westlimit=151.5; southlimit=-24.5; eastlimit=153; northlimit=-23

text: uplimit=502; downlimit=502

Subjects
Oceans | Marine Sediments | Sediment Grain Size | core_depth | geoscientificInformation | grainsize_size_category |

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Other Information
(ANU_Bostock_GC11_3_data.xls)

url : https://catalogue.aodn.org.au:443/geonetwork/srv/api/records/7e485510-2477-11dc-95fb-00188b4c0af8/attachments/ANU_Bostock_GC11_3_data.xls

Core data - Capricorn Channel (aodn: bluenet_datasets_capricorn_channel)

url : http://geoserver-123.aodn.org.au/geoserver/wms

global : 2b6c31c0-2465-11dc-95fb-00188b4c0af8

Identifiers
  • global : 7e485510-2477-11dc-95fb-00188b4c0af8