Geochemistry and isotopic ratios of samples from the Tiger gabbroic complex, Northern Victoria Land, Antarctica
Subduction related mafic/ultramafic complexes marking the suture between the Wilson Terrane and the Bowers Terrane in northern Victoria Land (Antarctica) are well-suited for evaluating the magmatic and structural evolu- tion at the Palaeo-Pacific continental margin of Gondwana. One of these intru- s...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.810354 2023-05-15T13:42:11+02:00 Geochemistry and isotopic ratios of samples from the Tiger gabbroic complex, Northern Victoria Land, Antarctica Henjes-Kunst, Friedhelm Koepke, Jürgen Läufer, Andreas Estrada, Solveig Phillips, Glen Piepjohn, Karsten Kosanke, Dominique MEDIAN LATITUDE: -73.493450 * MEDIAN LONGITUDE: 167.327050 * SOUTH-BOUND LATITUDE: -73.520200 * WEST-BOUND LONGITUDE: 167.216700 * NORTH-BOUND LATITUDE: -73.466700 * EAST-BOUND LONGITUDE: 167.437400 2014-01-22 application/zip, 5 datasets https://doi.pangaea.de/10.1594/PANGAEA.810354 https://doi.org/10.1594/PANGAEA.810354 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.810354 https://doi.org/10.1594/PANGAEA.810354 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Henjes-Kunst, Friedhelm; Koepke, Jürgen; Läufer, Andreas; Estrada, Solveig; Phillips, Glen; Piepjohn, Karsten; Kosanke, Dominique (2014): The Ross-orogenic Tiger Gabbro (northern Victoria Land, Antarctica): Insights into the lower crust of a Cambrian island arc? Polarforschung, 84(1), 23-38, hdl:10013/epic.44855.d001 Dataset 2014 ftpangaea https://doi.org/10.1594/PANGAEA.810354 2023-01-20T07:32:58Z Subduction related mafic/ultramafic complexes marking the suture between the Wilson Terrane and the Bowers Terrane in northern Victoria Land (Antarctica) are well-suited for evaluating the magmatic and structural evolu- tion at the Palaeo-Pacific continental margin of Gondwana. One of these intru- sions is the "Tiger Gabbro Complex" (TGC), which is located at the southern end of the island-arc type Bowers Terrane. The TGC is an early Palaeozoic island-arc related layered igneous complex characterized by extraordinarly fresh sequences of ultramafic, mafic and evolved lithologies and extensive development of high-temperature high-strain zones. The goal of the present study is to establish the kinematic, petrogenetic and temporal development of the TGC in order to evaluate the magmatic and structural evolution of the deep crustal roots of this Cambrian-aged island-arc. Fieldwork during GANOVEX X was carried out to provide insight into: (i) the spatial relations between the different igneous lithologies of the TGC, (ii) the nature of the contact between the TGC and Bowers Terrane, and (iii) the high-temperature shear zones exposed in parts of the TGC. Here, we report the results of detailed field and petrological observations combined with new geochronological data. Based on these new data, we tentatively propose a petrogenetic-kinematic model for the TGC, which involves a two-phase evolution during the Ross orogeny. These phases can be summarized as: (i) an early phase (maximum age c. 530 Ma) involving tectono-magmatic processes that were active at the deep crustal level represented by the TGC within the Bowers island arc and within a general NE-SW directed contractional regime and (ii) a late phase (maximum age c. 490 Ma) attributed to the late Ross orogenic intrusion of the TGC into the higher-crustal metasedimentary country rocks of the Bowers Terrane under NE-SW directed horizontal maximum stress and subsequent cooling. Dataset Antarc* Antarctica Polarforschung Victoria Land PANGAEA - Data Publisher for Earth & Environmental Science Victoria Land Pacific Bowers ENVELOPE(164.083,164.083,-85.000,-85.000) Bowers Island ENVELOPE(-113.786,-113.786,68.634,68.634) ENVELOPE(167.216700,167.437400,-73.466700,-73.520200) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
description |
Subduction related mafic/ultramafic complexes marking the suture between the Wilson Terrane and the Bowers Terrane in northern Victoria Land (Antarctica) are well-suited for evaluating the magmatic and structural evolu- tion at the Palaeo-Pacific continental margin of Gondwana. One of these intru- sions is the "Tiger Gabbro Complex" (TGC), which is located at the southern end of the island-arc type Bowers Terrane. The TGC is an early Palaeozoic island-arc related layered igneous complex characterized by extraordinarly fresh sequences of ultramafic, mafic and evolved lithologies and extensive development of high-temperature high-strain zones. The goal of the present study is to establish the kinematic, petrogenetic and temporal development of the TGC in order to evaluate the magmatic and structural evolution of the deep crustal roots of this Cambrian-aged island-arc. Fieldwork during GANOVEX X was carried out to provide insight into: (i) the spatial relations between the different igneous lithologies of the TGC, (ii) the nature of the contact between the TGC and Bowers Terrane, and (iii) the high-temperature shear zones exposed in parts of the TGC. Here, we report the results of detailed field and petrological observations combined with new geochronological data. Based on these new data, we tentatively propose a petrogenetic-kinematic model for the TGC, which involves a two-phase evolution during the Ross orogeny. These phases can be summarized as: (i) an early phase (maximum age c. 530 Ma) involving tectono-magmatic processes that were active at the deep crustal level represented by the TGC within the Bowers island arc and within a general NE-SW directed contractional regime and (ii) a late phase (maximum age c. 490 Ma) attributed to the late Ross orogenic intrusion of the TGC into the higher-crustal metasedimentary country rocks of the Bowers Terrane under NE-SW directed horizontal maximum stress and subsequent cooling. |
format |
Dataset |
author |
Henjes-Kunst, Friedhelm Koepke, Jürgen Läufer, Andreas Estrada, Solveig Phillips, Glen Piepjohn, Karsten Kosanke, Dominique |
spellingShingle |
Henjes-Kunst, Friedhelm Koepke, Jürgen Läufer, Andreas Estrada, Solveig Phillips, Glen Piepjohn, Karsten Kosanke, Dominique Geochemistry and isotopic ratios of samples from the Tiger gabbroic complex, Northern Victoria Land, Antarctica |
author_facet |
Henjes-Kunst, Friedhelm Koepke, Jürgen Läufer, Andreas Estrada, Solveig Phillips, Glen Piepjohn, Karsten Kosanke, Dominique |
author_sort |
Henjes-Kunst, Friedhelm |
title |
Geochemistry and isotopic ratios of samples from the Tiger gabbroic complex, Northern Victoria Land, Antarctica |
title_short |
Geochemistry and isotopic ratios of samples from the Tiger gabbroic complex, Northern Victoria Land, Antarctica |
title_full |
Geochemistry and isotopic ratios of samples from the Tiger gabbroic complex, Northern Victoria Land, Antarctica |
title_fullStr |
Geochemistry and isotopic ratios of samples from the Tiger gabbroic complex, Northern Victoria Land, Antarctica |
title_full_unstemmed |
Geochemistry and isotopic ratios of samples from the Tiger gabbroic complex, Northern Victoria Land, Antarctica |
title_sort |
geochemistry and isotopic ratios of samples from the tiger gabbroic complex, northern victoria land, antarctica |
publisher |
PANGAEA |
publishDate |
2014 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.810354 https://doi.org/10.1594/PANGAEA.810354 |
op_coverage |
MEDIAN LATITUDE: -73.493450 * MEDIAN LONGITUDE: 167.327050 * SOUTH-BOUND LATITUDE: -73.520200 * WEST-BOUND LONGITUDE: 167.216700 * NORTH-BOUND LATITUDE: -73.466700 * EAST-BOUND LONGITUDE: 167.437400 |
long_lat |
ENVELOPE(164.083,164.083,-85.000,-85.000) ENVELOPE(-113.786,-113.786,68.634,68.634) ENVELOPE(167.216700,167.437400,-73.466700,-73.520200) |
geographic |
Victoria Land Pacific Bowers Bowers Island |
geographic_facet |
Victoria Land Pacific Bowers Bowers Island |
genre |
Antarc* Antarctica Polarforschung Victoria Land |
genre_facet |
Antarc* Antarctica Polarforschung Victoria Land |
op_source |
Supplement to: Henjes-Kunst, Friedhelm; Koepke, Jürgen; Läufer, Andreas; Estrada, Solveig; Phillips, Glen; Piepjohn, Karsten; Kosanke, Dominique (2014): The Ross-orogenic Tiger Gabbro (northern Victoria Land, Antarctica): Insights into the lower crust of a Cambrian island arc? Polarforschung, 84(1), 23-38, hdl:10013/epic.44855.d001 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.810354 https://doi.org/10.1594/PANGAEA.810354 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.810354 |
_version_ |
1766164445064593408 |