Paleomagnetism and paleogeography of the Northern Calcareous Alps (Austria)

Article Abstract:

Paleomagnetic and paleogeographic data from 38 sites in the Austrian Northern Calcareous Alps (NCA) indicate that the sites rotated around one another during thrusting. NCA was found to have rotated an average of 30 degrees relative to Europe. Analysis of facies of basinal sediments from the Jurassic and Lower Cretaceous indicate that NCA did not rotate relative to the Southern Alps. However, results reveal the brief existence of oceanic crust between the Northern and the Southern Alps from the Triassic to the Jurassic periods.

Austria, Paleogeography, Austrian Alps

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Jurassic-Cretaceous paleomagnetism and paleogeography of the Pontides (Turkey)

Article Abstract:

Paleolatitude data from Eastern and Western Pontides, Turkey, indicate that these regions were near the Eurasian continental margin during the Liassic and Late Cretaceous period. Fold tests of paleomagnetic data from 50 Late Cretaceous and 11 Early Jurassic sites indicate that magnetization factors predate Eocene folding. The mean declinations of the Late Cretaceous sites are northerly in the Eastern Pontides and rotated towards the west in the Western Pontides. The declinations are influenced by rotation in some regions.

Turkey, Observations, Natural history, Paleography

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Jurassic and Cretaceous paleomagnetic data from the Southern Alps (Italy)

Article Abstract:

Paleomagnetic data dating from the Jurassic and Cretaceous periods obtained from 46 sampling areas in the Southern Alps, Italy were compiled and analyzed. The sites were divided into four age groups. Positive regional fold tests on the various age groups indicate that the formation of the magnetic components predates that of deformation in three age groups. Comparison of the collected data with polar wander paths implies that from the Early Permian, Southern Alps movements have paralleled that of Africa.

Research, Italy, Geodynamics, Italian Alps

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