Nature and Evolution of the Upper Mantle beneath Heard Island
This project is using ultramafic xenoliths - samples of the mantle beneath Heard Island to study the formation and evolution of the Kerguelen-Heard Plateau. Such plateaus are thought to represent an important stage in the formation of continents over the earths history. Additionally, new evidence su...
Other Authors: | , , |
---|---|
Format: | Dataset |
Language: | unknown |
Published: |
Australian Antarctic Data Centre
|
Subjects: | |
Online Access: | https://researchdata.ands.org.au/nature-evolution-upper-heard-island/699635 https://doi.org/10.4225/15/554ACADFE35E6 https://data.aad.gov.au/metadata/records/ASAC_1243 http://nla.gov.au/nla.party-617536 |
id |
ftands:oai:ands.org.au::699635 |
---|---|
record_format |
openpolar |
spelling |
ftands:oai:ands.org.au::699635 2023-05-15T16:33:50+02:00 Nature and Evolution of the Upper Mantle beneath Heard Island O'REILLY, SUZANNE (hasPrincipalInvestigator) O'REILLY, SUZANNE (processor) Australian Antarctic Data Centre (publisher) Spatial: northlimit=-52.9651; southlimit=-53.1877; westlimit=73.2979; eastLimit=73.7221; projection=WGS84 Temporal: From 2000-10-22 to 2000-11-29 https://researchdata.ands.org.au/nature-evolution-upper-heard-island/699635 https://doi.org/10.4225/15/554ACADFE35E6 https://data.aad.gov.au/metadata/records/ASAC_1243 http://nla.gov.au/nla.party-617536 unknown Australian Antarctic Data Centre https://researchdata.ands.org.au/nature-evolution-upper-heard-island/699635 c20d6042-f12d-46ad-8b85-d9a54772f6dc doi:10.4225/15/554ACADFE35E6 ASAC_1243 https://data.aad.gov.au/metadata/records/ASAC_1243 http://nla.gov.au/nla.party-617536 Australian Antarctic Data Centre geoscientificInformation LITHOSPHERIC PLATE MOTION EARTH SCIENCE SOLID EARTH TECTONICS PLATE TECTONICS DESCRIPTION GEOLOGY HEARD ISLAND LATITUDE LOCATION LONGITUDE MU NUMBER SAMPLE NUMBER FIELD SURVEYS OCEAN > SOUTHERN OCEAN > CONTINENT > AUSTRALIA/NEW ZEALAND > AUSTRALIA > GEOGRAPHIC REGION > POLAR HEARD AND MCDONALD ISLANDS dataset ftands https://doi.org/10.4225/15/554ACADFE35E6 2020-01-05T21:16:27Z This project is using ultramafic xenoliths - samples of the mantle beneath Heard Island to study the formation and evolution of the Kerguelen-Heard Plateau. Such plateaus are thought to represent an important stage in the formation of continents over the earths history. Additionally, new evidence suggests the Kerguelen Plateau may contain ancient continental fragments, which are possible remnants of Gondwana. Ultramafic xenoliths were collected from Heard Island during field season 2000 from 6 locations, 5 of which were previously unreported. Petrological and geochemical information is being used to characterise the mantle beneath Heard Island, and Re-Os isotopic dating is being used to constrain the formation age of the plateau. Initial results indicate the mantle beneath Heard Island is highly depleted in basaltic components. The presence of reaction textures containing small amounts of carbonate in some xenoliths is an indication of possible carbonatitic metasomatism, which has been observed for similar samples from Kerguelen. The fields in this dataset are: MU Number (Macquarie University Catalogue Number) Sample Number Location Latitude Longitude Description Dataset Heard Island McDonald Islands Southern Ocean Research Data Australia (Australian National Data Service - ANDS) Southern Ocean Kerguelen Heard Island New Zealand Heard Island ENVELOPE(73.510,73.510,-53.117,-53.117) Heard ENVELOPE(73.510,73.510,-53.117,-53.117) McDonald Islands ENVELOPE(72.600,72.600,-53.033,-53.033) ENVELOPE(73.2979,73.7221,-52.9651,-53.1877) |
institution |
Open Polar |
collection |
Research Data Australia (Australian National Data Service - ANDS) |
op_collection_id |
ftands |
language |
unknown |
topic |
geoscientificInformation LITHOSPHERIC PLATE MOTION EARTH SCIENCE SOLID EARTH TECTONICS PLATE TECTONICS DESCRIPTION GEOLOGY HEARD ISLAND LATITUDE LOCATION LONGITUDE MU NUMBER SAMPLE NUMBER FIELD SURVEYS OCEAN > SOUTHERN OCEAN > CONTINENT > AUSTRALIA/NEW ZEALAND > AUSTRALIA > GEOGRAPHIC REGION > POLAR HEARD AND MCDONALD ISLANDS |
spellingShingle |
geoscientificInformation LITHOSPHERIC PLATE MOTION EARTH SCIENCE SOLID EARTH TECTONICS PLATE TECTONICS DESCRIPTION GEOLOGY HEARD ISLAND LATITUDE LOCATION LONGITUDE MU NUMBER SAMPLE NUMBER FIELD SURVEYS OCEAN > SOUTHERN OCEAN > CONTINENT > AUSTRALIA/NEW ZEALAND > AUSTRALIA > GEOGRAPHIC REGION > POLAR HEARD AND MCDONALD ISLANDS Nature and Evolution of the Upper Mantle beneath Heard Island |
topic_facet |
geoscientificInformation LITHOSPHERIC PLATE MOTION EARTH SCIENCE SOLID EARTH TECTONICS PLATE TECTONICS DESCRIPTION GEOLOGY HEARD ISLAND LATITUDE LOCATION LONGITUDE MU NUMBER SAMPLE NUMBER FIELD SURVEYS OCEAN > SOUTHERN OCEAN > CONTINENT > AUSTRALIA/NEW ZEALAND > AUSTRALIA > GEOGRAPHIC REGION > POLAR HEARD AND MCDONALD ISLANDS |
description |
This project is using ultramafic xenoliths - samples of the mantle beneath Heard Island to study the formation and evolution of the Kerguelen-Heard Plateau. Such plateaus are thought to represent an important stage in the formation of continents over the earths history. Additionally, new evidence suggests the Kerguelen Plateau may contain ancient continental fragments, which are possible remnants of Gondwana. Ultramafic xenoliths were collected from Heard Island during field season 2000 from 6 locations, 5 of which were previously unreported. Petrological and geochemical information is being used to characterise the mantle beneath Heard Island, and Re-Os isotopic dating is being used to constrain the formation age of the plateau. Initial results indicate the mantle beneath Heard Island is highly depleted in basaltic components. The presence of reaction textures containing small amounts of carbonate in some xenoliths is an indication of possible carbonatitic metasomatism, which has been observed for similar samples from Kerguelen. The fields in this dataset are: MU Number (Macquarie University Catalogue Number) Sample Number Location Latitude Longitude Description |
author2 |
O'REILLY, SUZANNE (hasPrincipalInvestigator) O'REILLY, SUZANNE (processor) Australian Antarctic Data Centre (publisher) |
format |
Dataset |
title |
Nature and Evolution of the Upper Mantle beneath Heard Island |
title_short |
Nature and Evolution of the Upper Mantle beneath Heard Island |
title_full |
Nature and Evolution of the Upper Mantle beneath Heard Island |
title_fullStr |
Nature and Evolution of the Upper Mantle beneath Heard Island |
title_full_unstemmed |
Nature and Evolution of the Upper Mantle beneath Heard Island |
title_sort |
nature and evolution of the upper mantle beneath heard island |
publisher |
Australian Antarctic Data Centre |
url |
https://researchdata.ands.org.au/nature-evolution-upper-heard-island/699635 https://doi.org/10.4225/15/554ACADFE35E6 https://data.aad.gov.au/metadata/records/ASAC_1243 http://nla.gov.au/nla.party-617536 |
op_coverage |
Spatial: northlimit=-52.9651; southlimit=-53.1877; westlimit=73.2979; eastLimit=73.7221; projection=WGS84 Temporal: From 2000-10-22 to 2000-11-29 |
long_lat |
ENVELOPE(73.510,73.510,-53.117,-53.117) ENVELOPE(73.510,73.510,-53.117,-53.117) ENVELOPE(72.600,72.600,-53.033,-53.033) ENVELOPE(73.2979,73.7221,-52.9651,-53.1877) |
geographic |
Southern Ocean Kerguelen Heard Island New Zealand Heard Island Heard McDonald Islands |
geographic_facet |
Southern Ocean Kerguelen Heard Island New Zealand Heard Island Heard McDonald Islands |
genre |
Heard Island McDonald Islands Southern Ocean |
genre_facet |
Heard Island McDonald Islands Southern Ocean |
op_source |
Australian Antarctic Data Centre |
op_relation |
https://researchdata.ands.org.au/nature-evolution-upper-heard-island/699635 c20d6042-f12d-46ad-8b85-d9a54772f6dc doi:10.4225/15/554ACADFE35E6 ASAC_1243 https://data.aad.gov.au/metadata/records/ASAC_1243 http://nla.gov.au/nla.party-617536 |
op_doi |
https://doi.org/10.4225/15/554ACADFE35E6 |
_version_ |
1766023555580952576 |