Palaeomagnetic studies of Icelandic lava flows,Geophys
This paper describes a palaeomagnetic investigation of 107 igneous bodies, mostly basaltic lavas, of Pliocene and Pleistocene age in Iceland. A variety of conclusions has resulted from the study. Palaeomagnetic directions in lavas erupted in 1729, 1783 and 1875 do not support the postulated ' c...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.1029.6073 2023-05-15T15:44:13+02:00 Palaeomagnetic studies of Icelandic lava flows,Geophys Richard R. Doell The Pennsylvania State University CiteSeerX Archives 1972 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1029.6073 http://gji.oxfordjournals.org/content/26/5/459.full.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1029.6073 http://gji.oxfordjournals.org/content/26/5/459.full.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://gji.oxfordjournals.org/content/26/5/459.full.pdf text 1972 ftciteseerx 2016-10-30T00:08:28Z This paper describes a palaeomagnetic investigation of 107 igneous bodies, mostly basaltic lavas, of Pliocene and Pleistocene age in Iceland. A variety of conclusions has resulted from the study. Palaeomagnetic directions in lavas erupted in 1729, 1783 and 1875 do not support the postulated ' cycloid ' path for the Icelandic geomagnetic pole. Data are given for an application of geomagnetic reversal stratigraphy showing that Bering Strait opened more than 3 My ago, allowing Pacific boreal mollusks to enter Icelandic waters; these data also suggest that there were at least nine extensive glaciations since a time over 2 My ago. Lava flows erupted on Snaefellsnes Peninsula, western Iceland, contain large amounts of viscous remanent magnetization; partial demagnetization studies reveal a pre-dominant reversed polarity for most of these lavas with one pronounced ' excursion ' of virtual geomagnetic poles to very low latitudes. Detailed studies of a dike cutting a lava flow show that the lava's remanence is unaffected beyond one dike width from the dike contacts. Brunhes epoch paleosecular variation is consistent with a model combining a changing nondipole field like the present one with a dipole wobble of about 11". 1. Text Bering Strait Geomagnetic Pole Iceland Unknown Bering Strait Pacific |
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ftciteseerx |
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English |
description |
This paper describes a palaeomagnetic investigation of 107 igneous bodies, mostly basaltic lavas, of Pliocene and Pleistocene age in Iceland. A variety of conclusions has resulted from the study. Palaeomagnetic directions in lavas erupted in 1729, 1783 and 1875 do not support the postulated ' cycloid ' path for the Icelandic geomagnetic pole. Data are given for an application of geomagnetic reversal stratigraphy showing that Bering Strait opened more than 3 My ago, allowing Pacific boreal mollusks to enter Icelandic waters; these data also suggest that there were at least nine extensive glaciations since a time over 2 My ago. Lava flows erupted on Snaefellsnes Peninsula, western Iceland, contain large amounts of viscous remanent magnetization; partial demagnetization studies reveal a pre-dominant reversed polarity for most of these lavas with one pronounced ' excursion ' of virtual geomagnetic poles to very low latitudes. Detailed studies of a dike cutting a lava flow show that the lava's remanence is unaffected beyond one dike width from the dike contacts. Brunhes epoch paleosecular variation is consistent with a model combining a changing nondipole field like the present one with a dipole wobble of about 11". 1. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Richard R. Doell |
spellingShingle |
Richard R. Doell Palaeomagnetic studies of Icelandic lava flows,Geophys |
author_facet |
Richard R. Doell |
author_sort |
Richard R. Doell |
title |
Palaeomagnetic studies of Icelandic lava flows,Geophys |
title_short |
Palaeomagnetic studies of Icelandic lava flows,Geophys |
title_full |
Palaeomagnetic studies of Icelandic lava flows,Geophys |
title_fullStr |
Palaeomagnetic studies of Icelandic lava flows,Geophys |
title_full_unstemmed |
Palaeomagnetic studies of Icelandic lava flows,Geophys |
title_sort |
palaeomagnetic studies of icelandic lava flows,geophys |
publishDate |
1972 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1029.6073 http://gji.oxfordjournals.org/content/26/5/459.full.pdf |
geographic |
Bering Strait Pacific |
geographic_facet |
Bering Strait Pacific |
genre |
Bering Strait Geomagnetic Pole Iceland |
genre_facet |
Bering Strait Geomagnetic Pole Iceland |
op_source |
http://gji.oxfordjournals.org/content/26/5/459.full.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1029.6073 http://gji.oxfordjournals.org/content/26/5/459.full.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766378519625990144 |