Multivectorial magnetization in late Palaeozoic volcanics from North Sardinia; partial remagnetization and rotation
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چکیده
منابع مشابه
A paleomagnetic reinvestigation of the Upper Devonian Perry Formation: evidence for Late Paleozoic remagnetization
In view of the recent recognition of widespread Late Paleozoic remagnetization of Devonian formations across North America, we undertook a reinvestigation of the Upper Devonian Perry Formation of coastal Maine and adjacent New Brunswick. Thermal demagnetization of samples from the redbeds yielded a characteristic direction (D = 166 ° l = 4 ° ) that fails a fold test. Comparison of the correspon...
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A variety of igneous, sedimentary and metamorphic Palaeozoic rocks from Tasmania have similar directions of NRM-steeply upward. Although the mean direction is not significantly difIerent at the 95% confidence level from the present field, its inclination is slightly steeper. Moreover, the palaeomagnetic pole calculated from these directions is closer to Tertiary poles from Australia than to the...
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Today, cycads are a small group of gymnospermous plants with a limited distribution in the (sub)tropics, but they were major constituents of Mesozoic floras. Fossil leaves sporadically found in latest Carboniferous and Permian floras have putatively been ascribed to cycads. However, their true affinity remains unclear due to the lack of anatomical evidence. Virtually all modern cycads have pinn...
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BACKGROUND The aim of this study was to analyze and describe the epidemiological characteristics and trends of lung cancer in North Sardinia, Italy, in the period 1992-2010. METHODS Data were obtained from the tumor registry of Sassari province which is a part of a wider registry web, coordinated today by the Italian Association for Tumor Registries. RESULTS The overall number of lung cance...
متن کاملInterpreting magnetization from Faraday rotation in birefringent magnetic media
The Faraday effect is an extremely useful probe of magnetization dynamics on an ultrafast scale. However, the measured Faraday rotation is difficult to interpret in birefringent media. We investigate the link between magnetization and Faraday rotation by solving Maxwell’s equations in a magnetically ordered, birefringent material. We find that the Faraday rotation can depend nonlinearly on the ...
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ژورنال
عنوان ژورنال: Geophysical Journal International
سال: 1978
ISSN: 0956-540X,1365-246X
DOI: 10.1111/j.1365-246x.1978.tb03741.x