CEAMARC marine sediment samples - collected on voyage 3 of the Aurora Australis, 2007-2008

Marine sediment samples were obtained from box corer, Smith-MacIntyre and Van Veen grabs.


Samples were named by:

1. CEAMARC site (e.g. 16)

2. Instrument (e.g. box corer = BC; Smith-MacIntyre = GRSM; Van Veen = GRVV) 3. Sequence of sample at each site (e.g. first sample = 01; second sample = 02) So 16BC02 is the second sample at CEAMARC site 16, using the box corer.


From each successful sample, a sub-sample was obtained:

1. 200 g surface scrape (labelled A)

2. short (20 cm) push core (labelled B)

3. bulk (labelled Bulk)

4. rocks-only (labelled Rocks)

e.g. 16BC02A is a 200 g surface scrape subsample from 16BC02.

16BC02B is a push core subsample from 16BC02

16BC02Bulk is a bulk sediment subsample from 16BC02.

16BC02Rocks is a rocks-only subsample from 16BC02.


Post-cruise analyses:

1. Grain size

2. Total organic carbon

3. Total organic nitrogen

4. Carbon and nitrogen isotopes

5. Biogenic silica and carbonate

6. Physical properties of cores

7. Zircon dating

8. X-rays for infauna and sedimentary structures


Added by Alix Post - March 2010:


Seabed samples were collected from 52 sites across the George V Shelf. Most samples were collected with a box corer (BC), though more gravelly sediments required a Smith-McIntyre (GRSM) or Van-Veen grab (GRVV) as indicated by the station name in the spreadsheet. A small volume of sediment was frozen following collection and later analysed for organic carbon and nitrogen content, in addition to carbon and nitrogen isotopes. Organic carbon and nitrogen values are express as percent of the total sediment, and have been corrected back to the total sediment volume. Isotopic values are expressed as values per mil.


Where sufficient volume of sediment was collected, a mini-core was pushed into the sediment to provide a depth profile of the sample, and a bulk surface sample was also taken. Surface sediment samples analysed for sieve grainsize, calcium carbonate and biogenic silica content. All values are expressed as percentage values. The naming convention of the samples describes the type of gear used and the nature of the sediment analysed: e.g. 01BC01Bulk is a bulk sediment sample collected with a box core; 38GRVV02B/0-1 is a slice taken from 0 to 1 cm at the top of a van veen grab.

Simple

Identification info

Alternate title
CEAMARC marine sediment samples - collected on voyage 3 of the Aurora Australis, 2007-2008
Date (Publication)
2010-03-11
Edition
1
Citation identifier
Dataset DOI

Title
Information and documentation - Digital object identifier system
Date (Publication)
2012-04-23
Citation identifier
ISO 26324:2012

Citation identifier
doi:10.4225/15/5a2898a685945

Originator

O'Brien, P.E., Beaman, R.J., Post, A., Chen, J. and Thun, C.

Publisher

Australian Antarctic Data Centre

Principal investigator

O'BRIEN, PHILIP EDWARD

Principal investigator

BEAMAN, ROBIN JORDAN
James Cook University PO Box 6811
Cairns
QLD
4870
Australia

Principal investigator

POST, ALIX
Geoscience Australia
Corner of Jerrabomberra Av. and Hindmarsh Drv.,
GPO Box 378
Symonston
Australian Capital Territory
2609
Australia

Collaborator

O'BRIEN, PHILIP EDWARD

Collaborator

BEAMAN, ROBIN JORDAN
James Cook University PO Box 6811
Cairns
QLD
4870
Australia

Collaborator

POST, ALIX
Geoscience Australia
Corner of Jerrabomberra Av. and Hindmarsh Drv.,
GPO Box 378
Symonston
Australian Capital Territory
2609
Australia

Collaborator

CHEN, JUNHONG
Geoscience Australia
Corner of Jerrabomberra Av. and Hindmarsh Drv.,
GPO Box 378
Symonston
Australian Capital Territory
2609
Australia

Collaborator

THUN, CHRISTIAN
Geoscience Australia
Corner of Jerrabomberra Av. and Hindmarsh Drv.,
GPO Box 378
Symonston
Australian Capital Territory
2609
Australia
Name
CAASM Metadata
Website
https://data.aad.gov.au/metadata/records/CEAMARC-200708_V3_MARINE_SEDIMENT_SAMPLES

Status
Completed

Custodian

AU/AADC > Australian Antarctic Data Centre, Australia - AADC, DATA OFFICER (DATA CENTER CONTACT)
Australian Antarctic Division
203 Channel Highway
Kingston
Tasmania
7050
Australia

Spatial resolution

Vertical sampling distance
5

Spatial resolution

Spatial resolution
1
Temporal resolution
PT1M
Topic category
  • Geoscientific information
  • Oceans

Extent

N
S
E
W


Extent

Description
Temporal Coverage

Temporal extent

TimePeriod
2007-12-23 2008-01-17
NASA/GCMD Earth Science Keywords
  • EARTH SCIENCE > OCEANS > MARINE SEDIMENTS > GEOTECHNICAL PROPERTIES
  • EARTH SCIENCE > OCEANS > MARINE SEDIMENTS > SEDIMENT COMPOSITION
  • EARTH SCIENCE > OCEANS > MARINE SEDIMENTS
  • EARTH SCIENCE > OCEANS > MARINE SEDIMENTS > SEDIMENT CHEMISTRY
  • EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > MARINE ECOSYSTEMS > BENTHIC
Keywords
  • sediment samples
  • calcium carbonate
  • surface sediment
  • grainsize
  • biogenic silica
  • grab sample
  • box core sample
  • box core
  • sieves
  • laser particle sizer
  • smith-mcintyre grab
  • van veen grab
  • carbon isotopes
  • nitrogen
  • organic carbon
  • nitrogen isotopes
  • high-temperature oxidation column
NASA/GCMD Earth Science Keywords
  • GRAB SAMPLERS
  • SEDIMENT CORERS
  • GAS CHROMATOGRAPHS
  • MASS SPECTROMETERS
NASA/GCMD Earth Science Keywords
  • SHIPS
  • R/V AA > R/V Aurora Australis
NASA/GCMD Earth Science Keywords
  • AMD/AU
  • CEOS
  • OBIS/SCAR-MARBIN
  • AMD
  • ANTABIF
  • AMD/SCAR-MARBIN
NASA/GCMD Earth Science Keywords
  • OCEAN > SOUTHERN OCEAN
  • GEOGRAPHIC REGION > POLAR

Resource constraints

Use limitation
This metadata record is publicly available.

Resource constraints

Access constraints
licence
Other constraints
These data are publicly available for download from the provided URLs. The dataset contains two excel spreadsheets detailing the sediment isotopes and the grainsize compositions, plus a pdf which provides further information about the laser grainsize data. Furthermore a link to Geoscience Australia's Marine Sediments Database is included. Data can also be found here.

Resource constraints

File type
Portable Network Graphic
Linkage
Creative Commons by Attribution logo

Title
Attribution 4.0 International (CC BY 4.0)
Website
https://creativecommons.org/licenses/by/4.0/legalcode

Legal code for Creative Commons by Attribution 4.0 International license

Use constraints
licence
Other constraints
This data set conforms to the CCBY Attribution License (http://creativecommons.org/licenses/by/4.0/). Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=CEAMARC-200708_V3_MARINE_SEDIMENT_SAMPLES when using these data.
Language
English
Character encoding
UTF8

Distribution Information

Distributor

Distributor

AU/AADC > Australian Antarctic Data Centre, Australia - AADC, DATA OFFICER (DATA CENTER CONTACT)
Australian Antarctic Division
203 Channel Highway
Kingston
Tasmania
7050
Australia

Distributor

Fees
Free
Planned available datetime
2010-03-11T00:00:00
Units of distribution
kb
Transfer size
677
Distribution format
  • excel, pdf

OnLine resource
GET DATA

Download point for the data at the Australian Antarctic Data Centre

OnLine resource
GET DATA

Access point for Geoscience Australia's Marine Sediments Database

OnLine resource
PROJECT HOME PAGE

Public information for ASAC project 2201

OnLine resource
VIEW RELATED INFORMATION

Citation reference for this metadata record and dataset.

Resource lineage

Statement
Data quality is good for all sediment records. Tin-wrapped samples are loaded into carousels with 49 samples in each tray and 3 trays making up a full run of 147 samples. The carousels are placed on an AS200 autosampler that drops a sample in response to a pulse of compressed air. Gases are swept through the columns and GC by an approximately 100 ml min-1 flow of high purity helium. The sample dropper uses a sliding port that maintains the approximately 1 atmosphere pressure of the helium required to force the gases through the columns and GC. The autosampler sits on top of a Carlo Erba CE1110 CHN-S analyser containing the two furnaces, the scrubber and the GC (Gas Chromatograph). After the GC in the gas stream sits a TCD (Thermal Conductivity Detector) which is used to measure peak area when the machine is used as an elemental analyser. The samples are dropped into the left-hand furnace which is the oxidising furnace and is maintained at 1050 degrees C. It consists of a silica glass tube filled with chromium oxide to the midpoint, with cobaltous silver oxide under it. A tube takes the carrier gas from the bottom of this reactor to the second, reducing furnace tube which the mixed gases flow up through. The second silica glass tube is filled with metallic copper pellets and is kept at 660 degrees C. The gases flow out of the top of this tube and through a scrubber filled with magnesium perchlorate to absorb all water vapour. The dried gases then pass through a packed GC consisting of a 1/4" stainless steel tube with Porapak QS 50-80 mesh. This is held at about 25 degrees C. Nitrogen gas exits from the GC, followed by carbon dioxide after about one minute. These flow to an open split where they are sucked into the mass spectrometer through a 75 micro silica capillary. The gas pulses, still mixed with the helium carrier, flow into the Fisons Isochrom CF-IRMS (Continuous-flow Isotope Ratio Mass Spectrometer) where their isotopic compositions are determined. Surface sediment samples were analysed to determine the gravel, sand and mud content by washing through 2 mm and 63 micron sieves. The less than 2 mm fraction was also analysed for laser particle size. Carbonate content was determined on the bulk material as well as the mud and sand fractions using the carbonate bomb method (Muller and Gastner, 1971). The carbonate content of the gravel fraction was determined by visual analysis. The biogenic silica content of the bulk sediment was measured based on the method of Mortlock and Froelich (1989). Muller, G., Gastner, M., 1971. The "Karbonat-Bombe," a simple device for the determination of the carbonate content in sediments, soils and other materials. Neues Jahrbuch fur Mineralogie, Monatshefte 10, 466-469. Mortlock, R.A., Froelich, P.N., 1989. A simple method for the rapid determination of biogenic opal in pelagic marine sediments. Deep Sea Research 36, 1415-1426.
Hierarchy level
Dataset
Maintenance and update frequency
As needed
Maintenance note
Preliminary metadata record created by Alicja Mosbauer 2008-25-02. 2010-03-11 - record updated by Dave Connell after metadata updates were sent in by Alix Post. 2011-11-04 - record updated by Dave Connell to link it to the 2201 parent record. 2017-12-07 - record updated by Dave Connell - basic updates. 2019-04-05 - record updated by Dave Connell for ISO compliance.

Metadata

Metadata identifier
string/CEAMARC-200708_V3_MARINE_SEDIMENT_SAMPLES

Language
English
Character encoding
UTF8

Author

CONNELL, DAVE J.
Australian Antarctic Division
203 Channel Highway
Kingston
Tasmania
7050
Australia

Sponsor

Australian Antarctic Division

Owner

AADC
Title
Parent Metadata Record
Citation identifier
ASAC_2201

Type of resource

Resource scope
Dataset

Alternative metadata reference

Title
gov.nasa.gsfc.gcmd
Citation identifier
f8ceae21-0684-4c77-bc84-45c49164ed38

Alternative metadata reference

Title
gov.nasa.gsfc.gcmd
Date (Last Revision)
2019-04-05T12:15:10

Identifier

Description
metadata.extraction_date

Alternative metadata reference

Title
gov.nasa.gsfc.gcmd
Citation identifier
8.6

Metadata linkage
http://data.aad.gov.au/metadata/records/CEAMARC-200708_V3_MARINE_SEDIMENT_SAMPLES

Point of truth for the metadata record

Date info (Creation)
2008-02-24T00:00:00
Date info (Last Update)
2019-04-05

Metadata standard

Title
ISO 19115-3
Edition
2014
Other citation details
Version 1
Title
DIF to ISO 19115-1 Profile
 
 

Overviews

Spatial extent

N
S
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W


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