Paleomagnetism of the Upper Silurian and Lower Devonian carbonates of New York State: evidence for secondary magnetizations residing in magnetite
dc.contributor.author | Scotese, Christopher R. | en_US |
dc.contributor.author | Van der Voo, Rob | en_US |
dc.contributor.author | McCabe, Chad | en_US |
dc.date.accessioned | 2006-04-07T17:45:52Z | |
dc.date.available | 2006-04-07T17:45:52Z | |
dc.date.issued | 1982-12 | en_US |
dc.identifier.citation | Scotese, Christopher R., Voo, Rob Van der, McCabe, Chad (1982/12)."Paleomagnetism of the Upper Silurian and Lower Devonian carbonates of New York State: evidence for secondary magnetizations residing in magnetite." Physics of The Earth and Planetary Interiors 30(4): 385-395. <http://hdl.handle.net/2027.42/23790> | en_US |
dc.identifier.uri | http://www.sciencedirect.com/science/article/B6V6S-472SHV2-3S/2/2a0bbd4b86023640ea2d2d000dae95d8 | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/23790 | |
dc.description.abstract | Paleomagnetic directions for the Upper Silurian and Lower Devonian carbonates of the Helderberg escarpment (New York State) differ from expected Late Silurian and Early Devonian directions for cratonic North America. The mean direction (D = 165[deg], I = -10[deg]; paleopole at 50[deg]N 129[deg]E) is similar to Late Carboniferous and Early Permian results. Negative fold tests, and a lack of reversals, suggest that the magnetization is secondary. However, low coercivities, low blocking temperatures, the thermomagnetic curves (TC near 570[deg]C) and the acquisition of isothermal remanent magnetizations all suggest that the remanence is carried by magnetite. If a detrital origin of these magnetites is assumed, the secondary nature of the remanence would argue for thermal resetting as a result of deep burial of the rocks. However, no evidence for such thermal resetting is seen in the alteration of conodonts. More likely perhaps is a chemical or thermochemical origin of the remanence; this would require the magnetites to be authigenic. | en_US |
dc.format.extent | 835603 bytes | |
dc.format.extent | 3118 bytes | |
dc.format.mimetype | application/pdf | |
dc.format.mimetype | text/plain | |
dc.language.iso | en_US | |
dc.publisher | Elsevier | en_US |
dc.title | Paleomagnetism of the Upper Silurian and Lower Devonian carbonates of New York State: evidence for secondary magnetizations residing in magnetite | en_US |
dc.type | Article | en_US |
dc.rights.robots | IndexNoFollow | en_US |
dc.subject.hlbsecondlevel | Physics | en_US |
dc.subject.hlbsecondlevel | Atmospheric, Oceanic and Space Sciences | en_US |
dc.subject.hlbtoplevel | Science | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.contributor.affiliationum | Department of Geological Sciences, University of Michigan, Ann Arbor, MI 48109, U.S.A. | en_US |
dc.contributor.affiliationum | Department of Geological Sciences, University of Michigan, Ann Arbor, MI 48109, U.S.A. | en_US |
dc.contributor.affiliationother | Department of Geophysical Sciences, University of Chicago, Chicago, IL 60637, U.S.A. | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/23790/1/0000028.pdf | en_US |
dc.identifier.doi | http://dx.doi.org/10.1016/0031-9201(82)90048-6 | en_US |
dc.identifier.source | Physics of The Earth and Planetary Interiors | en_US |
dc.owningcollname | Interdisciplinary and Peer-Reviewed |
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