Oxfordian magnetostratigraphy of Poland and its correlation to Sub-Mediterranean ammonite zones and marine magnetic anomalies |
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| Authors: | PA Przybylski E G?owniak JG Ogg P Zió?kowski M Sidorczuk J Gutowski M Lewandowski |
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| Institution: | 1. Department of Paleobiology MRC121, National Museum of Natural History, Smithsonian Institution, 10th Street and Constitution Ave. NW, Washington, DC 20560-0121, USA;2. Department of Palaeobiology, Swedish Museum of Natural History, P.O. Box 5007, Stockholm, Sweden;1. Graduate School of Science and Technology, Kumamoto University, Kumamoto 860-8555, Japan;2. The Center for Academic Resources and Archives Tohoku University Museum, Tohoku University, Aramaki Aza Aoba 6-3, Aoba-ku, Sendai 980-8578, Japan;3. Department of Geology and Paleontology, National Museum of Nature and Science, 4-1-1 Amakubo, Tsukuba 305-0005, Japan;4. Vietnam Institute of Geosciences and Mineral Resources (VIGMR), Hanoi, Viet Nam;5. Institute for Geo-Resources and Environment, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Higashi, Tsukuba 305-8567, Japan;6. Vietnam National Museum of Nature (VNMN), Hanoi, Viet Nam;7. Department of Astronomy and Earth Sciences, Tokyo Gakugei University, Koganei, Tokyo 184-8501, Japan;1. Department of Physics, Atmospheric Sciences, and Geoscience, Jackson State University, P.O. Box 17660, 1400 Lynch Street, Jackson, MS 39217, United States;2. Department of Geology, University of Payame Noor, Tehran 19395-4697, Islamic Republic of Iran;3. Department of Geology, Faculty of Science, University of Esfahan, Esfahan, Islamic Republic of Iran;4. Division of Geological and Planetary Sciences, California Institute of Technology, Mail Stop 100-23, Pasadena, CA 91125, United States |
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| Abstract: | A nearly continuous magnetostratigraphic polarity pattern was compiled from several ammonite-zoned carbonate successions of southern Poland and from a composite magnetostratigraphy from the Iberian Range of Spain. The array of sections spans the middle two-thirds of the Oxfordian within the Sub-Mediterranean Province (Cordatum through Bifurcatus ammonite zones). The average paleopole calculated from eight of these Polish sections is at 78.5°N, 184.9°E (δp = 2.6°, δm = 3.5°). The Sub-Mediterranean polarity pattern is consistent with an independent polarity pattern derived from the Boreal-realm sections of the British Isles, and improves the inter-correlation between these faunal realms. Cycle stratigraphy published for these ammonite subzones from southern France enabled temporal scaling of the polarity pattern, thereby facilitating correlation to marine magnetic anomalies M28 through M33 as modeled from deep-tow magnetometer surveys in the Western Pacific. The bases of the Middle and Upper Oxfordian substages as defined in the Sub-Mediterranean zonation in Poland correspond approximately to chrons M33 and M29 of that Pacific M-sequence model. |
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