New constraints on the Upper Permian and Lower Triassic geomagnetic polarity timescale from the Abadeh section (central Iran)
- Author(s)
- Yves Gallet, Leopold Krystyn, Jean Besse, Abdolah Saidi, Luc Emmanuel Ricou
- Abstract
We present the magnetostratigraphy of the Abadeh section (central Iran). Thermal demagnetization shows two magnetic components: one at low unblocking temperatures, which corresponds to a present day-field direction, and another at high temperatures. This second component, which contains both polarities, is interpreted as a primary magnetization acquired during sediment deposition at a paleolatitude of about 7.7° S. A sequence of 14 magnetic polarity zones is obtained in the intervals during the Upper Dzhulfian-Lower Changhsingian (Upper Permian) and during the Griesbachian (Lower Triassic). Combining data from south China, Canada, Pakistan, and Iran, we propose a composite (but still uncomplete) Upper Permian and Lower Triassic geomagnetic polarity timescale. Copyright 2000 by the American Geophysical Union.
- Organisation(s)
- Department of Palaeontology
- External organisation(s)
- Université de Paris, Université Paris VII - Paris-Diderot, Geological Survey of Iran
- Journal
- Journal of Geophysical Research - Solid Earth
- Volume
- 105
- Pages
- 2805-2815
- No. of pages
- 11
- ISSN
- 2169-9313
- DOI
- https://doi.org/10.1029/1999JB900218
- Publication date
- 2000
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 105118 Palaeontology
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/c847cf77-120a-4c92-859a-75d1cacc3116