Origin of scatter in paleomagnetic directions of samples from Gorely Volcano, Kamchatka, Russia
Lava flows from sixteen sites at Gorely Volcano, Kamchatka were sampled. Initial analysis showed high within-site scatter for NRM specimen directions. Alternating field and thermal demagnetization of specimens showed single-component magnetization indicating that specimens had not moved or were not...
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ftinstvs:oai:repo.kscnet.ru:2645 2023-05-15T16:58:59+02:00 Origin of scatter in paleomagnetic directions of samples from Gorely Volcano, Kamchatka, Russia Riley Colleen 1994 text http://repo.kscnet.ru/2645/ http://repo.kscnet.ru/2645/1/ColleenRiley.pdf http://repo.kscnet.ru/2645/19/Burmester.pdf en ru eng rus рукопись http://repo.kscnet.ru/2645/1/ColleenRiley.pdf http://repo.kscnet.ru/2645/19/Burmester.pdf Riley Colleen <http://repo.kscnet.ru/view/creators/Riley=3AColleen=3A=3A.html> (1994) Origin of scatter in paleomagnetic directions of samples from Gorely Volcano, Kamchatka, Russia геол.-мин. наук. Western Washington University: Western Washington University. 70 p. 37.15.31 Постоянное геомагнитное поле и вековые вариации 38.19.27 Палеомагнетизм 38.37.15 Физические свойства горных пород 38.37.19 Магматизм и магматические горные породы _ Вулканы Курило-Камчатского региона Горелый Диссертация NonPeerReviewed 1994 ftinstvs 2022-08-09T17:05:40Z Lava flows from sixteen sites at Gorely Volcano, Kamchatka were sampled. Initial analysis showed high within-site scatter for NRM specimen directions. Alternating field and thermal demagnetization of specimens showed single-component magnetization indicating that specimens had not moved or were not exposed to changes in the magnetic field during acquisition of a magnetic direction. Scatter is thought to be either due to movement of the specimen with respect to the magnetic field or change in the magnetic field with respect to the specimen. Four factors were found that would contribute to scatter in specimen directions. These are 1) cooling rate, 2) range of unblocking temperatures, 3) relative time of emplacement, and 4) how the specimen moved or was affected by changes in the magnetic field. Only two sites showed that scatter was due to movement of the specimen. It appears that scatter in other sites resulted from changes in the magnetic field generated from a magma-induced electrical current due to lava flowing in the earth’s magnetic field. These changes in the magnetic field are shown to have more affect on material sampled at the surface than on material sampled at depth because massive interiors of flows showed less dispersion in specimen directions than levees or pull-aparts. Text Kamchatka Institute of Volcanology and Seismology, Petropavlovsk-Kamchatsky: IVS FEB RAS Repository |
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Institute of Volcanology and Seismology, Petropavlovsk-Kamchatsky: IVS FEB RAS Repository |
op_collection_id |
ftinstvs |
language |
English Russian |
topic |
37.15.31 Постоянное геомагнитное поле и вековые вариации 38.19.27 Палеомагнетизм 38.37.15 Физические свойства горных пород 38.37.19 Магматизм и магматические горные породы _ Вулканы Курило-Камчатского региона Горелый |
spellingShingle |
37.15.31 Постоянное геомагнитное поле и вековые вариации 38.19.27 Палеомагнетизм 38.37.15 Физические свойства горных пород 38.37.19 Магматизм и магматические горные породы _ Вулканы Курило-Камчатского региона Горелый Riley Colleen Origin of scatter in paleomagnetic directions of samples from Gorely Volcano, Kamchatka, Russia |
topic_facet |
37.15.31 Постоянное геомагнитное поле и вековые вариации 38.19.27 Палеомагнетизм 38.37.15 Физические свойства горных пород 38.37.19 Магматизм и магматические горные породы _ Вулканы Курило-Камчатского региона Горелый |
description |
Lava flows from sixteen sites at Gorely Volcano, Kamchatka were sampled. Initial analysis showed high within-site scatter for NRM specimen directions. Alternating field and thermal demagnetization of specimens showed single-component magnetization indicating that specimens had not moved or were not exposed to changes in the magnetic field during acquisition of a magnetic direction. Scatter is thought to be either due to movement of the specimen with respect to the magnetic field or change in the magnetic field with respect to the specimen. Four factors were found that would contribute to scatter in specimen directions. These are 1) cooling rate, 2) range of unblocking temperatures, 3) relative time of emplacement, and 4) how the specimen moved or was affected by changes in the magnetic field. Only two sites showed that scatter was due to movement of the specimen. It appears that scatter in other sites resulted from changes in the magnetic field generated from a magma-induced electrical current due to lava flowing in the earth’s magnetic field. These changes in the magnetic field are shown to have more affect on material sampled at the surface than on material sampled at depth because massive interiors of flows showed less dispersion in specimen directions than levees or pull-aparts. |
format |
Text |
author |
Riley Colleen |
author_facet |
Riley Colleen |
author_sort |
Riley Colleen |
title |
Origin of scatter in paleomagnetic directions of samples from Gorely Volcano, Kamchatka, Russia |
title_short |
Origin of scatter in paleomagnetic directions of samples from Gorely Volcano, Kamchatka, Russia |
title_full |
Origin of scatter in paleomagnetic directions of samples from Gorely Volcano, Kamchatka, Russia |
title_fullStr |
Origin of scatter in paleomagnetic directions of samples from Gorely Volcano, Kamchatka, Russia |
title_full_unstemmed |
Origin of scatter in paleomagnetic directions of samples from Gorely Volcano, Kamchatka, Russia |
title_sort |
origin of scatter in paleomagnetic directions of samples from gorely volcano, kamchatka, russia |
publisher |
рукопись |
publishDate |
1994 |
url |
http://repo.kscnet.ru/2645/ http://repo.kscnet.ru/2645/1/ColleenRiley.pdf http://repo.kscnet.ru/2645/19/Burmester.pdf |
genre |
Kamchatka |
genre_facet |
Kamchatka |
op_relation |
http://repo.kscnet.ru/2645/1/ColleenRiley.pdf http://repo.kscnet.ru/2645/19/Burmester.pdf Riley Colleen <http://repo.kscnet.ru/view/creators/Riley=3AColleen=3A=3A.html> (1994) Origin of scatter in paleomagnetic directions of samples from Gorely Volcano, Kamchatka, Russia геол.-мин. наук. Western Washington University: Western Washington University. 70 p. |
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1766051118990753792 |