Geodynamic, depositional and environmental history of the region off the Amery Ice Shelf (IPY 2007-2008 Project)
In February-March 2007 PMGE, VNIIOkeangeologia and AWI conducted a joint geophysical survey in the area between the Prydz Bay and the southern Kerguelen Plateau (SKP) using two research vessels. Totally 5 000 km of MCS, gravity and magnetic profiles, 37 OBS records (along two N-S oriented MCS lines)...
Main Authors: | , , , , |
---|---|
Format: | Conference Object |
Language: | unknown |
Published: |
2008
|
Subjects: | |
Online Access: | https://epic.awi.de/id/eprint/18670/ https://hdl.handle.net/10013/epic.30313 |
id |
ftawi:oai:epic.awi.de:18670 |
---|---|
record_format |
openpolar |
spelling |
ftawi:oai:epic.awi.de:18670 2024-09-15T17:38:43+00:00 Geodynamic, depositional and environmental history of the region off the Amery Ice Shelf (IPY 2007-2008 Project) Leitchenkov, G. Gandykhin, V. Gohl, Karsten Guseva, Y. Damaske, Detlef 2008 https://epic.awi.de/id/eprint/18670/ https://hdl.handle.net/10013/epic.30313 unknown Leitchenkov, G. , Gandykhin, V. , Gohl, K. orcid:0000-0002-9558-2116 , Guseva, Y. and Damaske, D. (2008) Geodynamic, depositional and environmental history of the region off the Amery Ice Shelf (IPY 2007-2008 Project) , SCAR/IASC Open Science Conference, 8-11 July 2008, St. Petersburg. . hdl:10013/epic.30313 EPIC3SCAR/IASC Open Science Conference, 8-11 July 2008, St. Petersburg. Conference notRev 2008 ftawi 2024-06-24T04:00:42Z In February-March 2007 PMGE, VNIIOkeangeologia and AWI conducted a joint geophysical survey in the area between the Prydz Bay and the southern Kerguelen Plateau (SKP) using two research vessels. Totally 5 000 km of MCS, gravity and magnetic profiles, 37 OBS records (along two N-S oriented MCS lines) and about 8000 km of detailed helicopter magnetic lines (in two local corridors centered on MCS-OBS profiles) have been acquired. Additionally two-ship (long-aperture) seismic experiment has been carried out along the 72.7E MCS-OBS line. Conducted investigations enabled definition crustal characteristics of this region, mapping principal tectonic provinces and features and development a seismic stratigraphy model. Major preliminary outcomes of the study are following: 1) the COB off Prydz Bay is marked by emplacements of mantle rocks into the lower crust (incomplete mantle unroofing) and is located 20-70 km southward of the prominent linear magnetic anomaly (Mac. Robertson Coast Anomaly); this anomaly might reflect a more active melt production during initial emplacement of the Kerguelen Plume into the oceanic lithosphere; 2) oceanic crust between 68E and 76E shows symmetric consequences of M-series magnetic anomalies with proposed extinct spreading centers implying paleoridge jumps; the SKP was probably isolated from India margin during this event and is underlain by extended continental crust; 3) flat-lying terrace with thickened (10-11 km) magmatic crust was recognized around the major morphological elevation of the SKP. Conference Object Amery Ice Shelf Ice Shelf IPY Prydz Bay Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
institution |
Open Polar |
collection |
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
In February-March 2007 PMGE, VNIIOkeangeologia and AWI conducted a joint geophysical survey in the area between the Prydz Bay and the southern Kerguelen Plateau (SKP) using two research vessels. Totally 5 000 km of MCS, gravity and magnetic profiles, 37 OBS records (along two N-S oriented MCS lines) and about 8000 km of detailed helicopter magnetic lines (in two local corridors centered on MCS-OBS profiles) have been acquired. Additionally two-ship (long-aperture) seismic experiment has been carried out along the 72.7E MCS-OBS line. Conducted investigations enabled definition crustal characteristics of this region, mapping principal tectonic provinces and features and development a seismic stratigraphy model. Major preliminary outcomes of the study are following: 1) the COB off Prydz Bay is marked by emplacements of mantle rocks into the lower crust (incomplete mantle unroofing) and is located 20-70 km southward of the prominent linear magnetic anomaly (Mac. Robertson Coast Anomaly); this anomaly might reflect a more active melt production during initial emplacement of the Kerguelen Plume into the oceanic lithosphere; 2) oceanic crust between 68E and 76E shows symmetric consequences of M-series magnetic anomalies with proposed extinct spreading centers implying paleoridge jumps; the SKP was probably isolated from India margin during this event and is underlain by extended continental crust; 3) flat-lying terrace with thickened (10-11 km) magmatic crust was recognized around the major morphological elevation of the SKP. |
format |
Conference Object |
author |
Leitchenkov, G. Gandykhin, V. Gohl, Karsten Guseva, Y. Damaske, Detlef |
spellingShingle |
Leitchenkov, G. Gandykhin, V. Gohl, Karsten Guseva, Y. Damaske, Detlef Geodynamic, depositional and environmental history of the region off the Amery Ice Shelf (IPY 2007-2008 Project) |
author_facet |
Leitchenkov, G. Gandykhin, V. Gohl, Karsten Guseva, Y. Damaske, Detlef |
author_sort |
Leitchenkov, G. |
title |
Geodynamic, depositional and environmental history of the region off the Amery Ice Shelf (IPY 2007-2008 Project) |
title_short |
Geodynamic, depositional and environmental history of the region off the Amery Ice Shelf (IPY 2007-2008 Project) |
title_full |
Geodynamic, depositional and environmental history of the region off the Amery Ice Shelf (IPY 2007-2008 Project) |
title_fullStr |
Geodynamic, depositional and environmental history of the region off the Amery Ice Shelf (IPY 2007-2008 Project) |
title_full_unstemmed |
Geodynamic, depositional and environmental history of the region off the Amery Ice Shelf (IPY 2007-2008 Project) |
title_sort |
geodynamic, depositional and environmental history of the region off the amery ice shelf (ipy 2007-2008 project) |
publishDate |
2008 |
url |
https://epic.awi.de/id/eprint/18670/ https://hdl.handle.net/10013/epic.30313 |
genre |
Amery Ice Shelf Ice Shelf IPY Prydz Bay |
genre_facet |
Amery Ice Shelf Ice Shelf IPY Prydz Bay |
op_source |
EPIC3SCAR/IASC Open Science Conference, 8-11 July 2008, St. Petersburg. |
op_relation |
Leitchenkov, G. , Gandykhin, V. , Gohl, K. orcid:0000-0002-9558-2116 , Guseva, Y. and Damaske, D. (2008) Geodynamic, depositional and environmental history of the region off the Amery Ice Shelf (IPY 2007-2008 Project) , SCAR/IASC Open Science Conference, 8-11 July 2008, St. Petersburg. . hdl:10013/epic.30313 |
_version_ |
1810474983319666688 |