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Palaeomagnetic measurements on rocks from Mt Crean to determine the continental drift of gondwanaland

Federal Geographic Data Committee (FGDC) Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: Unknown
Publication_Date: Unknown
Title: Palaeomagnetic measurements on rocks from Mt Crean to determine the continental drift of gondwanaland
Description:
Abstract:
The Beacon sediments of East Antarctica were deposited over the Devonian to Triassic geological periods, from 400 to 200 million years ago. Palaeomagnetic measurements on these rocks provide information on the continental drift of Gondwanaland and the geological history can be inferred. Past dating of Antarctic rocks finds a single pole, for a time 160 million years ago in the Jurassic period corresponding to a massive intrusion of dolerite sills into the Beacon sediments. Heat and fluid from these intrusions largely destroyed the primary magnetisation acquired by rocks older than them. Rock samples from the Victoria University of Wellington Antarctic rock collections were remeasured using newly developed techniques. Some rock samples were found to retain some primary magnetisation. Further samples were collected from promising sites to corroborate the measurements. 200 orientated cores, 25 mm in diameter and 50 to 150 mm long were obtained from Mt Crean on the edge of the polar plateau, 200km west of Scott Base, Mt Feather and Table Mountain. The sediments sampled were red siltstones from the Aztec Group, or Upper Devonian age. A reassessment of the structure of Gondwanaland and its climate at the time was reported due to these new results.
Purpose:
Not Available
Supplemental_Information:
Not Available
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 19981130
Ending_Date: 19981206
Currentness_Reference:Unknown
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Description_of_Geographic_Extent:
Bounding_Coordinates:
West_Bounding_Coordinate: 160.0
East_Bounding_Coordinate: 160.0
North_Bounding_Coordinate: -77.9667
South_Bounding_Coordinate: -77.9667
Spatial_Domain:
Description_of_Geographic_Extent:
Bounding_Coordinates:
West_Bounding_Coordinate: 160.46666
East_Bounding_Coordinate: 160.46666
North_Bounding_Coordinate: -77.933334
South_Bounding_Coordinate: -77.933334
Spatial_Domain:
Description_of_Geographic_Extent:
Bounding_Coordinates:
West_Bounding_Coordinate: 159.5
East_Bounding_Coordinate: 159.5
North_Bounding_Coordinate: -77.8833
South_Bounding_Coordinate: -77.8833
Keywords:
Theme:
Theme_Keyword_Thesaurus: GCMD SCIENCE PARAMETERS
Theme_Keyword_Thesaurus: GCMD PLATFORM
Theme_Keyword_Thesaurus: ISO TOPIC CATEGORY
Theme_Keyword_Thesaurus: DATA SET LANGUAGE
Theme_Keyword: EARTH SCIENCE > LAND SURFACE > GEOMORPHOLOGY > TECTONIC LANDFORMS/PROCESSES
Theme_Keyword: EARTH SCIENCE > PALEOCLIMATE > LAND RECORDS > PALEOMAGNETIC DATA
Theme_Keyword: EARTH SCIENCE > SOLID EARTH > GEOMAGNETISM > PALEOMAGNETISM
Theme_Keyword: FIELD SURVEYS
Theme_Keyword: LABORATORY
Theme_Keyword: FIELD INVESTIGATION
Theme_Keyword: GEOSCIENTIFIC INFORMATION
Theme_Keyword: ENGLISH
Place:
Place_Keyword_Thesaurus: GCMD
Place_Keyword: CONTINENT > ANTARCTICA
Place_Keyword: CONTINENT > ANTARCTICA > TABLE MOUNTAIN
Place_Keyword: CONTINENT > ANTARCTICA > MT CREAN
Place_Keyword: CONTINENT > ANTARCTICA > MT FEATHER
Place_Keyword: GEOGRAPHIC REGION > POLAR
Access_Constraints: Not Available
Use_Constraints:
Not Available
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: NERIDA BLEAKLEY
Contact_Position: INVESTIGATOR
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Water Management Planning, Water Resource Division
Address: Department of Primary Industries and Water
Address: PO BOX 44
City: Hobart
State_or_Province: Tasmania
Postal_Code: 7001
Country: Australia
Contact_Voice_Telephone: +61 03 6233 3645
Contact_Electronic_Mail_Address: Nerida.Bleakley@dpiw.tas.gov.au
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Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Any remaining samples are stored in the Victoria University of Wellington rock collection, online on the PETLAB database. For more information, please contact: Stephen Eager Collections Technician School of Geography, Environment and Earth Science Victoria University of Wellington Phone: +64 4 463 6192 Email: stephen.eager@vuw.ac.nz
Logical_Consistency_Report:
Not Available
Completeness_Report:
Not Available
Lineage:
Process_Step:
Process_Description:
Not Available
Process_Date: Unknown
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Spatial_Reference_Information:
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Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: NZ/NZAI/ANZ > Antarctica New Zealand, New Zealand Antarctic Institute, New Zealand
Contact_Person: SHULAMIT GORDON
Contact_Position: DATA CENTER CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Antarctica New Zealand
Address: Private Bag 4745
City: Christchurch
Country: New Zealand
Contact_Voice_Telephone: +64 3 358 0200
Contact_Facsimile_Telephone: +64 3 358 0211
Contact_Electronic_Mail_Address: s.gordon@antarcticanz.govt.nz
Resource_Description: K045_1994_1995_NZ_1
Distribution_Liability:
Not Available
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: Not Available
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://www.antarcticanz.govt.nz/
Access_Instructions:
DATA CENTER URL
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://pet.gns.cri.nz
Access_Instructions:
The PETLAB database catalogue.
Fees: Not Available
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Metadata_Reference_Information:
Metadata_Date: 20090521
Metadata_Review_Date: 20090606
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: CEISHA POIROT
Contact_Person_Primary:
Contact_Person: SHULAMIT GORDON
Contact_Position: DIF AUTHOR
Contact_Position: DIF AUTHOR
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Antarctica New Zealand
Address: Private Bag 4745
City: Christchurch
Country: New Zealand
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Antarctica New Zealand
Address: Private Bag 4745
City: Christchurch
Country: New Zealand
Contact_Voice_Telephone: +64 3 358 0200
Contact_Voice_Telephone: +64 3 358 0200
Contact_Facsimile_Telephone: +64 3 358 0211
Contact_Facsimile_Telephone: +64 3 358 0211
Contact_Electronic_Mail_Address: c.poirot@antarcticanz.govt.nz
Contact_Electronic_Mail_Address: s.gordon@antarcticanz.govt.nz
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
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