U-Th-Pb detrital zircon geochronology from the southern Prince Charles Mountains, East Antarctica - Defining the Archaean to Neoproterozoic Ruker Province
Laser ablation inductively coupled mass spectrometry (LA-ICPMS) dating of detrital zircon has been employed to tighten geochronological constraints from the southern Prince Charles Mountains, East Antarctica. The grains of detrital zircon are from extensive metasedimentary units that define differen...
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ftanucanberra:oai:digitalcollections.anu.edu.au:1885/19407 2023-05-15T13:56:14+02:00 U-Th-Pb detrital zircon geochronology from the southern Prince Charles Mountains, East Antarctica - Defining the Archaean to Neoproterozoic Ruker Province Phillips, G Wilson, Christopher J.L. Campbell, Ian Allen, Charlotte M 2015-12-07T22:19:35Z http://hdl.handle.net/1885/19407 unknown Elsevier 0301-9268 http://hdl.handle.net/1885/19407 Precambrian Research Keywords: Archean geochronology inductively coupled plasma method lithostratigraphy metasedimentary rock orthogneiss Proterozoic thorium uranium-lead dating zircon Antarctica East Antarctica Prince Charles Mountains Detrital zircon Laser ablation inductively coupled mass spectrometry (LA-ICPMS) Neoproterozoic Provenance Ruker Province Stratigraphy Journal article 2015 ftanucanberra 2015-12-28T23:19:06Z Laser ablation inductively coupled mass spectrometry (LA-ICPMS) dating of detrital zircon has been employed to tighten geochronological constraints from the southern Prince Charles Mountains, East Antarctica. The grains of detrital zircon are from extensive metasedimentary units that define different stratigraphic levels. Provenance information from this study has identified three lithostratigraphic units that range in age from Archaean to Neoproterozoic times. The newly defined Tingey Complex contains the oldest known strata, and consists of an Archaean felsic basement overlain by three stratigraphic layers, distinguished by ca. 3200 Ma, ca. 2800 Ma and ca. 2500 Ma detrital zircon grains. The Lambert Complex consists of a metasedimentary package, characterised by ca. 2100 Ma, ca. 1900-1800 Ma and ca. 2600 Ma detrital zircon grains that possibly overlies late Palaeoproterozoic orthogneiss. The Neoproterozoic Sodruzhestvo Group comprises the youngest exposed unit and consists of a thick, clastic-dominated sequence that is distinguished by ca. 1170-970 Ma grains. This study suggests that the isotopic differences reported from the southern Prince Charles Mountains are a result of stratigraphic stacking, rather than due to juxtaposition via collision and accretion tectonics. The discovery of ca. 2500 Ma detrital zircon grains within the Palaeoproterozoic metasedimentary rocks of the Tingey Complex strengthens correlations with Archaean fragments exposed in neighbouring regions of East Antarctica. Constraining the deposition of the Sodruzhestvo Group to the mid-Neoproterozoic period suggests a prominent period of basin development occurred within the southern Prince Charles Mountains at this time. Article in Journal/Newspaper Antarc* Antarctica East Antarctica Prince Charles Mountains Australian National University: ANU Digital Collections East Antarctica Prince Charles Mountains ENVELOPE(67.246,67.246,-71.427,-71.427) Ruker ENVELOPE(64.583,64.583,-73.583,-73.583) |
institution |
Open Polar |
collection |
Australian National University: ANU Digital Collections |
op_collection_id |
ftanucanberra |
language |
unknown |
topic |
Keywords: Archean geochronology inductively coupled plasma method lithostratigraphy metasedimentary rock orthogneiss Proterozoic thorium uranium-lead dating zircon Antarctica East Antarctica Prince Charles Mountains Detrital zircon Laser ablation inductively coupled mass spectrometry (LA-ICPMS) Neoproterozoic Provenance Ruker Province Stratigraphy |
spellingShingle |
Keywords: Archean geochronology inductively coupled plasma method lithostratigraphy metasedimentary rock orthogneiss Proterozoic thorium uranium-lead dating zircon Antarctica East Antarctica Prince Charles Mountains Detrital zircon Laser ablation inductively coupled mass spectrometry (LA-ICPMS) Neoproterozoic Provenance Ruker Province Stratigraphy Phillips, G Wilson, Christopher J.L. Campbell, Ian Allen, Charlotte M U-Th-Pb detrital zircon geochronology from the southern Prince Charles Mountains, East Antarctica - Defining the Archaean to Neoproterozoic Ruker Province |
topic_facet |
Keywords: Archean geochronology inductively coupled plasma method lithostratigraphy metasedimentary rock orthogneiss Proterozoic thorium uranium-lead dating zircon Antarctica East Antarctica Prince Charles Mountains Detrital zircon Laser ablation inductively coupled mass spectrometry (LA-ICPMS) Neoproterozoic Provenance Ruker Province Stratigraphy |
description |
Laser ablation inductively coupled mass spectrometry (LA-ICPMS) dating of detrital zircon has been employed to tighten geochronological constraints from the southern Prince Charles Mountains, East Antarctica. The grains of detrital zircon are from extensive metasedimentary units that define different stratigraphic levels. Provenance information from this study has identified three lithostratigraphic units that range in age from Archaean to Neoproterozoic times. The newly defined Tingey Complex contains the oldest known strata, and consists of an Archaean felsic basement overlain by three stratigraphic layers, distinguished by ca. 3200 Ma, ca. 2800 Ma and ca. 2500 Ma detrital zircon grains. The Lambert Complex consists of a metasedimentary package, characterised by ca. 2100 Ma, ca. 1900-1800 Ma and ca. 2600 Ma detrital zircon grains that possibly overlies late Palaeoproterozoic orthogneiss. The Neoproterozoic Sodruzhestvo Group comprises the youngest exposed unit and consists of a thick, clastic-dominated sequence that is distinguished by ca. 1170-970 Ma grains. This study suggests that the isotopic differences reported from the southern Prince Charles Mountains are a result of stratigraphic stacking, rather than due to juxtaposition via collision and accretion tectonics. The discovery of ca. 2500 Ma detrital zircon grains within the Palaeoproterozoic metasedimentary rocks of the Tingey Complex strengthens correlations with Archaean fragments exposed in neighbouring regions of East Antarctica. Constraining the deposition of the Sodruzhestvo Group to the mid-Neoproterozoic period suggests a prominent period of basin development occurred within the southern Prince Charles Mountains at this time. |
format |
Article in Journal/Newspaper |
author |
Phillips, G Wilson, Christopher J.L. Campbell, Ian Allen, Charlotte M |
author_facet |
Phillips, G Wilson, Christopher J.L. Campbell, Ian Allen, Charlotte M |
author_sort |
Phillips, G |
title |
U-Th-Pb detrital zircon geochronology from the southern Prince Charles Mountains, East Antarctica - Defining the Archaean to Neoproterozoic Ruker Province |
title_short |
U-Th-Pb detrital zircon geochronology from the southern Prince Charles Mountains, East Antarctica - Defining the Archaean to Neoproterozoic Ruker Province |
title_full |
U-Th-Pb detrital zircon geochronology from the southern Prince Charles Mountains, East Antarctica - Defining the Archaean to Neoproterozoic Ruker Province |
title_fullStr |
U-Th-Pb detrital zircon geochronology from the southern Prince Charles Mountains, East Antarctica - Defining the Archaean to Neoproterozoic Ruker Province |
title_full_unstemmed |
U-Th-Pb detrital zircon geochronology from the southern Prince Charles Mountains, East Antarctica - Defining the Archaean to Neoproterozoic Ruker Province |
title_sort |
u-th-pb detrital zircon geochronology from the southern prince charles mountains, east antarctica - defining the archaean to neoproterozoic ruker province |
publisher |
Elsevier |
publishDate |
2015 |
url |
http://hdl.handle.net/1885/19407 |
long_lat |
ENVELOPE(67.246,67.246,-71.427,-71.427) ENVELOPE(64.583,64.583,-73.583,-73.583) |
geographic |
East Antarctica Prince Charles Mountains Ruker |
geographic_facet |
East Antarctica Prince Charles Mountains Ruker |
genre |
Antarc* Antarctica East Antarctica Prince Charles Mountains |
genre_facet |
Antarc* Antarctica East Antarctica Prince Charles Mountains |
op_source |
Precambrian Research |
op_relation |
0301-9268 http://hdl.handle.net/1885/19407 |
_version_ |
1766263606580609024 |