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Magnetostratigraphy of the Kavaalani section (southwestern Turkey): Consequence for the origin of the Antalya calcareous nappes (Turkey) and for the Norian (Late Triassic) magnetic polarity timescale
Author(s) -
Gallet Yves,
Besse Jean,
Krystyn Leopold,
Marcoux Jean,
Guex Jean,
Théveniaut Hervé
Publication year - 2000
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2000gl008504
Subject(s) - nappe , geology , paleontology , paleomagnetism , magnetostratigraphy , polarity (international relations) , section (typography) , southern hemisphere , calcareous , trias , magnetic declination , phanerozoic , cenozoic , structural basin , physics , tectonics , magnetic field , advertising , cell , business , earth's magnetic field , genetics , climatology , quantum mechanics , biology
A magnetostratigraphic study of the Kavaalani section of uppermost Carnian to Upper Norian age, located in the Antalya Calcareous Nappes (southwestern Turkey), reveals nineteen polarity intervals. This pattern correlates very well with two other polarity sequences obtained from the same nappe system (Bolücektasi Tepe and Kavur Tepe) if these sections were deposited in the same (northern) hemisphere. This new interpretation changes our previous conclusions regarding the southern hemisphere origin of the magnetic remanence of the Kavur Tepe section. The paleomagnetic data obtained from the Kavur Tepe and the Kavaalani sections therefore reflect large (∼180°) internal rotations within the Antalya nappes. These nappes were likely formed close to the northern tip of the Arabian promontory. We propose a revised yet still preliminary version of the Norian magnetic polarity sequence.