Tectonic Implications of a Remagnetization Event in the Newark Basin
The Newark basin red beds contain a secondary magnetization (the B component) acquired during the Middle Jurassic after the 5°-20° basin-wide northwesterly dip was imparted to the strata of the basin and after most, if not all, of the limb rotation in the Jacksonwald syncline. The B component magnet...
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Columbia University
1991
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ftdatacite:10.7916/d8057rfb 2023-05-15T17:32:54+02:00 Tectonic Implications of a Remagnetization Event in the Newark Basin Witte, William K. Kent, Dennis V. 1991 https://dx.doi.org/10.7916/d8057rfb https://academiccommons.columbia.edu/doi/10.7916/D8057RFB unknown Columbia University Geophysics Text Articles article-journal ScholarlyArticle 1991 ftdatacite https://doi.org/10.7916/d8057rfb 2021-11-05T12:55:41Z The Newark basin red beds contain a secondary magnetization (the B component) acquired during the Middle Jurassic after the 5°-20° basin-wide northwesterly dip was imparted to the strata of the basin and after most, if not all, of the limb rotation in the Jacksonwald syncline. The B component magnetization was most likely related to the same hydrothermal event which evidently remagnetized many of the igneous intrusions in the basin and reset their K/Ar systems at 175 Ma. The remagnetization of the red beds occurred over a few million years and was approximately coincident with the transition from continental rifting to seafloor spreading in the adjacent North Atlantic. The B component magnetization direction yields a paleomagnetic pole at 74°N, 96°E (K = 63, A_95 = 2.6°, N = 50 sites) after structural correction for 1/3 of the Jacksonwald folding and none of the regional tilt. This pole supports recent evidence for a high-latitude model of Jurassic apparent polar wander for North America. Text North Atlantic DataCite Metadata Store (German National Library of Science and Technology) |
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Geophysics |
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Geophysics Witte, William K. Kent, Dennis V. Tectonic Implications of a Remagnetization Event in the Newark Basin |
topic_facet |
Geophysics |
description |
The Newark basin red beds contain a secondary magnetization (the B component) acquired during the Middle Jurassic after the 5°-20° basin-wide northwesterly dip was imparted to the strata of the basin and after most, if not all, of the limb rotation in the Jacksonwald syncline. The B component magnetization was most likely related to the same hydrothermal event which evidently remagnetized many of the igneous intrusions in the basin and reset their K/Ar systems at 175 Ma. The remagnetization of the red beds occurred over a few million years and was approximately coincident with the transition from continental rifting to seafloor spreading in the adjacent North Atlantic. The B component magnetization direction yields a paleomagnetic pole at 74°N, 96°E (K = 63, A_95 = 2.6°, N = 50 sites) after structural correction for 1/3 of the Jacksonwald folding and none of the regional tilt. This pole supports recent evidence for a high-latitude model of Jurassic apparent polar wander for North America. |
format |
Text |
author |
Witte, William K. Kent, Dennis V. |
author_facet |
Witte, William K. Kent, Dennis V. |
author_sort |
Witte, William K. |
title |
Tectonic Implications of a Remagnetization Event in the Newark Basin |
title_short |
Tectonic Implications of a Remagnetization Event in the Newark Basin |
title_full |
Tectonic Implications of a Remagnetization Event in the Newark Basin |
title_fullStr |
Tectonic Implications of a Remagnetization Event in the Newark Basin |
title_full_unstemmed |
Tectonic Implications of a Remagnetization Event in the Newark Basin |
title_sort |
tectonic implications of a remagnetization event in the newark basin |
publisher |
Columbia University |
publishDate |
1991 |
url |
https://dx.doi.org/10.7916/d8057rfb https://academiccommons.columbia.edu/doi/10.7916/D8057RFB |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_doi |
https://doi.org/10.7916/d8057rfb |
_version_ |
1766131229350952960 |