Palaeomagnetic and rock magnetic properties of sediment cores from Chalkidiki, Greece

被引：4
作者：
Aidona, E [1 ]
Kondopoulou, D
Georgakopoulos, A
机构：
[1] Univ Thessaloniki, Sch Geol, Dept Geophys, GR-54006 Thessaloniki, Greece
[2] Univ Thessaloniki, Sch Geol, Dept Mineral Petrol Econ Geol, GR-54006 Thessaloniki, Greece
来源：
PHYSICS AND CHEMISTRY OF THE EARTH PART A-SOLID EARTH AND GEODESY | 2001年 / 26卷 / 11-12期
关键词：
D O I：
10.1016/S1464-1895(01)00136-3
中图分类号：
P3 [地球物理学]; P59 [地球化学];
学科分类号：
0708 ; 070902 ;
摘要：
A detailed palaeomagnetic investigation was performed on Eocene and Oligocene core samples from 4 deep boreholes (1-3.1 km) from the Chalkidiki peninsula. Both low field magnetic susceptibility and intensity of the natural remanent magnetization (NRM) indicate rather weakly magnetised materials. 134 samples have been subjected to either stepwise thermal or alternating field demagnetization. Both procedures indicate that the NRM is carried by magnetite. Isothermal remanent magnetization (IRM) acquisition curves suggest the dominance of magnetite. Finally, 12 thin sections were studied in order to more precisely characterise the magnetic mineralogy of the samples. This investigation reveals the presence of magnetite and pyrite. In general, the observed inclinations of characteristic remanence in these rocks are much lower than expected inclinations but converge with those obtained from formations on land. (C) 2001 Elsevier Science Ltd. All rights reserved.
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页码：879 / 884
页数：6
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