Data

Tectonic, magmatic and hydrothermal evolution of ocean floor spreading at Macquarie Island

Australian Antarctic Division
Davidson, G. ; DAVIDSON, GARRY
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=info:doi10.4225/15/55D6C4A98FEE3&rft.title=Tectonic, magmatic and hydrothermal evolution of ocean floor spreading at Macquarie Island&rft.identifier=10.4225/15/55D6C4A98FEE3&rft.publisher=Australian Antarctic Data Centre&rft.description=Macquarie Island offers a rare land-based cross-section through the deep ocean floor, which covers 60% of our Earth. It formed 11 million years ago as slow spreading crust, which has had minimal study compared to more common fastspreading crust. Does the difference in spreading speed produce different crustal geometry, composition, hydrothermal fluids, and cycling of sulfur between ocean and crust? To gain insights to these and related questions, we propose to study uplifted and eroded sections through a series of fault zones, spaced along the length of Macquarie Island, which were the last magmatic, structural and hydrothermal events to occur before shifting stresses drove the seafloor up to form the Macquarie Ridge mountain chain. This dataset is a summary of samples obtained by Mr Steve Lewis for the purposes of investigating hydrothermal alteration in oceanic crust on Macquarie Island. Samples derive from the major lake, Lusitania Bay, and Caroline Cove areas. Each sample consists of rock chips up to a maximum of 1 kg.Samples were all obtained by hand with a geological hammer.The fields in this dataset are:SampleEasting NorthingDateLocationTransectDetailsProgress Code: completedStatement: The dates provided in temporal coverage are approximate only. Year and month are correct. &rft.creator=Davidson, G. &rft.creator=DAVIDSON, GARRY &rft.date=2001&rft.coverage=westlimit=158.0; southlimit=-54.0; eastlimit=159.0; northlimit=-54.0&rft.coverage=westlimit=158.0; southlimit=-54.0; eastlimit=159.0; northlimit=-54.0&rft_rights=These data are publicly available for download at the provided URL.&rft_rights=Attribution 4.0 International (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/legalcode&rft_rights=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=ASAC_1318 when using these data.&rft_rights=This metadata record is publicly available.&rft_subject=geoscientificInformation&rft_subject=oceans&rft_subject=EARTH SCIENCE > SOLID EARTH > TECTONICS > PLATE TECTONICS&rft_subject=HYDROTHERMAL ALTERATION&rft_subject=MACQUARIE ISLAND&rft_subject=OCEAN FLOOR&rft_subject=SPREADING&rft_subject=FIELD SURVEYS&rft_subject=AMD/AU&rft_subject=CEOS&rft_subject=AMD&rft_subject=OCEAN > SOUTHERN OCEAN&rft_subject=OCEAN > SOUTHERN OCEAN > MACQUARIE ISLAND&rft_subject=GEOGRAPHIC REGION > POLAR&rft.type=dataset&rft.language=English Access the data
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CC-BY

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

These data are publicly available for download at the provided URL.

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=ASAC_1318 when using these data.

This metadata record is publicly available.

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Full description

Macquarie Island offers a rare land-based cross-section through the deep ocean floor, which covers 60% of our Earth. It formed 11 million years ago as slow spreading crust, which has had minimal study compared to more common fastspreading crust. Does the difference in spreading speed produce different crustal geometry, composition, hydrothermal fluids, and cycling of sulfur between ocean and crust? To gain insights to these and related questions, we propose to study uplifted and eroded sections through a series of fault zones, spaced along the length of Macquarie Island, which were the last magmatic, structural and hydrothermal events to occur before shifting stresses drove the seafloor up to form the Macquarie Ridge mountain chain.

This dataset is a summary of samples obtained by Mr Steve Lewis for the purposes of investigating hydrothermal alteration in oceanic crust on Macquarie Island. Samples derive from the major lake, Lusitania Bay, and Caroline Cove areas. Each sample consists of rock chips up to a maximum of 1 kg.

Samples were all obtained by hand with a geological hammer.

The fields in this dataset are:

Sample
Easting Northing
Date
Location
Transect
Details

Lineage

Progress Code: completed
Statement: The dates provided in temporal coverage are approximate only. Year and month are correct.

Data time period: 2001-08-01 to 2003-03-31

This dataset is part of a larger collection

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158,-54 159,-54

158.5,-54

text: westlimit=158.0; southlimit=-54.0; eastlimit=159.0; northlimit=-54.0

Subjects
AMD | AMD/AU | CEOS | EARTH SCIENCE > SOLID EARTH > TECTONICS > PLATE TECTONICS | FIELD SURVEYS | GEOGRAPHIC REGION > POLAR | HYDROTHERMAL ALTERATION | MACQUARIE ISLAND | OCEAN > SOUTHERN OCEAN | OCEAN > SOUTHERN OCEAN > MACQUARIE ISLAND | OCEAN FLOOR | SPREADING | geoscientificInformation | oceans |

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Other Information
Download point for the data (GET DATA)

url : http://data.aad.gov.au/aadc/portal/download_file.cfm?file_id=1618

Public information for ASAC project 1318 (PROJECT HOME PAGE)

url : https://projects.aad.gov.au/search_projects_results.cfm?project_no=1318

Citation reference for this metadata record and dataset (VIEW RELATED INFORMATION)

url : http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=ASAC_1318

Identifiers
ACN 633 798 857