Paleomagnetism of the Cretaceous rocks from Cape Kronotskiy, East Kamchatka and reconstruction of terrane trajectories in the NE Pacific area
<jats:p>Abstract. The Kamchatka Peninsula of northeastern Russia is located along the northwestern margin of the Bering Sea and consists of zones of complexly deformed accreted terranes. Paleomagnetic samples were collected for study from a Late Cretaceous aged locality at Cape Kronotskiy (λ=5...
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2009
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ftunivpittsburgh:oai:d-scholarship.pitt.edu:13717 2023-09-05T13:18:31+02:00 Paleomagnetism of the Cretaceous rocks from Cape Kronotskiy, East Kamchatka and reconstruction of terrane trajectories in the NE Pacific area Harbert, W Tsukanov, NV Alexeiev, DV Gaedicke, C Freitag, R Baranov, BV Skolotnev, SG Kramer, W Seifert, W 2009-09-17 application/pdf text/plain http://d-scholarship.pitt.edu/13717/ http://d-scholarship.pitt.edu/13717/3/smsps-4-313-2009.pdf http://d-scholarship.pitt.edu/13717/1/licence.txt en eng Copernicus GmbH http://d-scholarship.pitt.edu/13717/3/smsps-4-313-2009.pdf http://d-scholarship.pitt.edu/13717/1/licence.txt Harbert, W and Tsukanov, NV and Alexeiev, DV and Gaedicke, C and Freitag, R and Baranov, BV and Skolotnev, SG and Kramer, W and Seifert, W (2009) Paleomagnetism of the Cretaceous rocks from Cape Kronotskiy, East Kamchatka and reconstruction of terrane trajectories in the NE Pacific area. Stephan Mueller Special Publication Series, 4. 313 - 327. cc_by_4 Article PeerReviewed 2009 ftunivpittsburgh 2023-08-14T17:31:11Z <jats:p>Abstract. The Kamchatka Peninsula of northeastern Russia is located along the northwestern margin of the Bering Sea and consists of zones of complexly deformed accreted terranes. Paleomagnetic samples were collected for study from a Late Cretaceous aged locality at Cape Kronotskiy (λ=54°44.8´ N, φ=162°1.29´ E). Two components of magnetization were observed. During stepwise thermal demagnetization, the B-magnetic component was observed up to 600°C having a direction and associated uncertainty in stratigraphic coordinates of Ds=300.7°, Is=48.7°, α95=10.9°, k-value=11.8, n=17. The B component paleolatitude calculated from the Fisher mean in stratigraphic coordinates and associated statistics are λobs=30.4° N or S, λ95=8.9°, n=17 (sites), k-value=11. Our overall study paleolatitude result is similar to a previously reported paleomagnetic study completed within this unit. Terrane trajectories calculated using the finite rotation poles of Engebretson et al. (1985), which are corrected for either Pacific-hotspot drift or True Polar Wander hotspot-spin axis relative motion, show that the sampled unit represents a far traveled tectonostratigraphic terrane and support a model in which accretion (docking) events of this composite or superterrane with the North America plate occur at approximately 40 Ma. </jats:p> Article in Journal/Newspaper Bering Sea Kamchatka Kamchatka Peninsula University of Pittsburgh: D-Scholarship@Pitt Bering Sea Pacific Kamchatka Peninsula ENVELOPE(160.000,160.000,56.000,56.000) |
institution |
Open Polar |
collection |
University of Pittsburgh: D-Scholarship@Pitt |
op_collection_id |
ftunivpittsburgh |
language |
English |
description |
<jats:p>Abstract. The Kamchatka Peninsula of northeastern Russia is located along the northwestern margin of the Bering Sea and consists of zones of complexly deformed accreted terranes. Paleomagnetic samples were collected for study from a Late Cretaceous aged locality at Cape Kronotskiy (λ=54°44.8´ N, φ=162°1.29´ E). Two components of magnetization were observed. During stepwise thermal demagnetization, the B-magnetic component was observed up to 600°C having a direction and associated uncertainty in stratigraphic coordinates of Ds=300.7°, Is=48.7°, α95=10.9°, k-value=11.8, n=17. The B component paleolatitude calculated from the Fisher mean in stratigraphic coordinates and associated statistics are λobs=30.4° N or S, λ95=8.9°, n=17 (sites), k-value=11. Our overall study paleolatitude result is similar to a previously reported paleomagnetic study completed within this unit. Terrane trajectories calculated using the finite rotation poles of Engebretson et al. (1985), which are corrected for either Pacific-hotspot drift or True Polar Wander hotspot-spin axis relative motion, show that the sampled unit represents a far traveled tectonostratigraphic terrane and support a model in which accretion (docking) events of this composite or superterrane with the North America plate occur at approximately 40 Ma. </jats:p> |
format |
Article in Journal/Newspaper |
author |
Harbert, W Tsukanov, NV Alexeiev, DV Gaedicke, C Freitag, R Baranov, BV Skolotnev, SG Kramer, W Seifert, W |
spellingShingle |
Harbert, W Tsukanov, NV Alexeiev, DV Gaedicke, C Freitag, R Baranov, BV Skolotnev, SG Kramer, W Seifert, W Paleomagnetism of the Cretaceous rocks from Cape Kronotskiy, East Kamchatka and reconstruction of terrane trajectories in the NE Pacific area |
author_facet |
Harbert, W Tsukanov, NV Alexeiev, DV Gaedicke, C Freitag, R Baranov, BV Skolotnev, SG Kramer, W Seifert, W |
author_sort |
Harbert, W |
title |
Paleomagnetism of the Cretaceous rocks from Cape Kronotskiy, East Kamchatka and reconstruction of terrane trajectories in the NE Pacific area |
title_short |
Paleomagnetism of the Cretaceous rocks from Cape Kronotskiy, East Kamchatka and reconstruction of terrane trajectories in the NE Pacific area |
title_full |
Paleomagnetism of the Cretaceous rocks from Cape Kronotskiy, East Kamchatka and reconstruction of terrane trajectories in the NE Pacific area |
title_fullStr |
Paleomagnetism of the Cretaceous rocks from Cape Kronotskiy, East Kamchatka and reconstruction of terrane trajectories in the NE Pacific area |
title_full_unstemmed |
Paleomagnetism of the Cretaceous rocks from Cape Kronotskiy, East Kamchatka and reconstruction of terrane trajectories in the NE Pacific area |
title_sort |
paleomagnetism of the cretaceous rocks from cape kronotskiy, east kamchatka and reconstruction of terrane trajectories in the ne pacific area |
publisher |
Copernicus GmbH |
publishDate |
2009 |
url |
http://d-scholarship.pitt.edu/13717/ http://d-scholarship.pitt.edu/13717/3/smsps-4-313-2009.pdf http://d-scholarship.pitt.edu/13717/1/licence.txt |
long_lat |
ENVELOPE(160.000,160.000,56.000,56.000) |
geographic |
Bering Sea Pacific Kamchatka Peninsula |
geographic_facet |
Bering Sea Pacific Kamchatka Peninsula |
genre |
Bering Sea Kamchatka Kamchatka Peninsula |
genre_facet |
Bering Sea Kamchatka Kamchatka Peninsula |
op_relation |
http://d-scholarship.pitt.edu/13717/3/smsps-4-313-2009.pdf http://d-scholarship.pitt.edu/13717/1/licence.txt Harbert, W and Tsukanov, NV and Alexeiev, DV and Gaedicke, C and Freitag, R and Baranov, BV and Skolotnev, SG and Kramer, W and Seifert, W (2009) Paleomagnetism of the Cretaceous rocks from Cape Kronotskiy, East Kamchatka and reconstruction of terrane trajectories in the NE Pacific area. Stephan Mueller Special Publication Series, 4. 313 - 327. |
op_rights |
cc_by_4 |
_version_ |
1776199467413798912 |