Rockmagnetism and palaeomagnetism of an Early Cretaceous/Late Jurassic dike swarm in Rio Grande do Norte, Brazil
Item
Title (Dublin Core)
en-US
Rockmagnetism and palaeomagnetism of an Early Cretaceous/Late Jurassic dike swarm in Rio Grande do Norte, Brazil
Description (Dublin Core)
en-US
Ten sites from a dike swarm of early Cretaceous/Late Jurassic age in northeast Brazil (5.7°S, 36.6°W) yielded a pole at 80.6°N, 95°E with A95 = 9.5°, K = 26.7 after AF cleaning. Rock-magnetic investigations and chemical analyses revealed titanomagnetites and maghemites, both with low titanium content showing ilmenite exsolution lamellae (oxidation class III). These are due to an internal high-temperature oxidation during cooling of the large dikes, follwed by low-temperature oxidation and/or hydrothermal alterations. There is evidence that with low-temperature oxidation the Ti-to-Fe ratio increases, a finding that is consistent with previous studies. Hysteresis parameters and susceptibility versus temperature curves can be interpreted in terms of pseudosingle-domain behavior with a trend toward multidomain behavior in accordance with moderate-to-weak stability of the remanence.
ARK: https://n2t.net/ark:/88439/y008126
Permalink: https://geophysicsjournal.com/article/126
ARK: https://n2t.net/ark:/88439/y008126
Permalink: https://geophysicsjournal.com/article/126
Creator (Dublin Core)
Bucker, C.
Schult, A.
Bloch, W.
Guerreiro, S.D.C.
Subject (Dublin Core)
en-US
Rock magnetism
en-US
Palaeomagnetism
en-US
Basaltic dikes
en-US
South America
en-US
Data
Publisher (Dublin Core)
en-US
Journal of Geophysics
Date (Dublin Core)
1986-10-30
Type (Dublin Core)
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
en-US
Peer-reviewed Article
Format (Dublin Core)
application/pdf
Identifier (Dublin Core)
https://journal.geophysicsjournal.com/JofG/article/view/126
Source (Dublin Core)
en-US
Journal of Geophysics; Vol 60 No 1 (1986): Journal of Geophysics; 129-135
2643-2986
2643-9271
Language (Dublin Core)
eng
Relation (Dublin Core)
https://journal.geophysicsjournal.com/JofG/article/view/126/88