geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Secondary magnetizations from the Clinton-type iron ores of the Silurian Red Mountain Formation, Alabama


, : Secondary magnetizations from the Clinton-type iron ores of the Silurian Red Mountain Formation, Alabama. Earth and Planetary Science Letters 67(3): 391-399

From 27 (out of a total of 29) sites a characteristic pre-folding magnetization has been obtained with D = 150 degrees , I = + 20 degrees , alpha (sub 95) = 3.5 degrees , and paleopole at 38 degrees N, 132 degrees E. However, we conclude from a bedding-error test and a conglomerate test, as well as from descriptions of the hematite as a replacement mineral, that the magnetization is a (late) post-depositional chemical remanent magnetization. The age constraints on the magnetization, between Middle Silurian and Early Permian, can be refined by a comparison with the apparent polar wander path for cratonic North America; this comparison suggests a Late Carboniferous age for the magnetization and the hematite. Similar late Paleozoic remagnetizations have been noted in other Appalachian and mid-continent formations and suggest a widespread, but as yet ill-defined mechanism for the remagnetization.--Modified journal abstract.

US$19.90

DOI: 10.1016/0012-821x(84)90177-8


Other references

Cerqueira Falcao, E.De, 1959: Professor Piraja da Silva, incontestable discoverer of Schistosoma mansoni. Falcao, again reiterates arguments previously presented by him in two volumes, privately printed and circulated in 1953 and 1957, and in various lectures and broadcasts in Brazil during the past nine years, in support of his belief that the credit...

Liebeke, M.; Pöther, D-Christoph.; van Duy, N.; Albrecht, D.; Becher, Dörte.; Hochgräfe, F.; Lalk, M.; Hecker, M.; Antelmann, H., 2008: Depletion of thiol-containing proteins in response to quinones in Bacillus subtilis. Molecular Microbiology 69(6): 1513-1529

Thomsen, J.L., 1980: An investigation of some of the factors influencing the results of Y-chromosome detection in blood stains. The possible significance of some factors with regard to their effect on Y-chromosome detection in blood stains was investigated. (1) It was found that when using centrifugal force instead of a pipette for the extraction of stains on cotton cloth...

Katz, D.; Berrodin, T.J.; Lazar, M.A., 1992: The unique C-termini of the thyroid hormone receptor variant, c-erbA alpha 2, and thyroid hormone receptor alpha 1 mediate different DNA-binding and heterodimerization properties. Thyroid hormone receptors (TRs) mediate the regulation of gene transcription by thyroid hormone (T3) by binding to T3-responsive elements (TREs) in target genes. c-erbA alpha 2 is a C-terminal TR variant which does not bind T3 and is a dominant in...

Wu, J.Q. et al., 1991: The habit and control of kenaf root-knot nematode. The root-knot nematode species on kenaf [Hibiscus cannabinus] are Meloidogyne incognita race 1, Meloidogyne javanica and Meloidogyne arenaria. 29 species of plants were identified for their resistance to the nematodes including, rice, cotton, pean...

Rochdi, A.; Taourirte, M.; Redwane, N.; Sebti, S.; Engels, J.W.; Lazrek, H.B., 2003: Doped natural phosphate: a new and environmentally friendly catalyst in nucleoside synthesis. Doped natural phosphate is used as acidic or basic catalyst in nucleoside and acyclonucleoside synthesis. Some examples are given.

Morgan, E.R.; Clare, E.L.; Jefferies, R.; Stevens, J.R., 2013: Parasite epidemiology in a changing world: can molecular phylogeography help us tell the wood from the trees?. SUMMARY Molecular phylogeography has revolutionised our ability to infer past biogeographic events from cross-sectional data on current parasite populations. In ecological parasitology, this approach has been used to address fundamental questions...

Zelenkevich A.A.; Papernov I.M., 1972: Physical-geographic and geologic conditions. Pages 28-58 1972

Hamm, C.W.; Bleifeld, W., 1988: Unstable angina: current concepts of medical management. Unstable angina describes a clinical syndrome bridging the gap between stable angina and acute myocardial infarction. By definition, patients with angina of new onset, of a crescendo pattern, and with angina at rest are included in this high-risk...

Díaz Beveridge, R.; Aparicio Urtasun, J., 2003: Therapy-related acute leukaemia and myelodysplastic syndrome. Secondary hematological malignancies represent a severe complication of cancer treatment. Their real incidence is unknown because of the heterogeneity of primary tumors, their therapies, and their prognosis. The usual presentation is an acute leuk...