A palaeomagnetic study of some basaltoids and ores from the Pontic Ranges, Northern Turkey: Palaeogeographic implications期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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A palaeomagnetic study of some basaltoids and ores from the Pontic Ranges, Northern Turkey: Palaeogeographic implications

Authors:	Musa Güner

Institution:	Department of Geology, University of Lund, Sölvegatan 13, S-223 62, Lund, Sweden

Abstract:	The palaeomagnetism of basic rocks and sulphide ores has been studied in the Küre area, Pontic Ranges, Turkey. Progressive alternating-field demagnetization revealed a characteristic remanent magnetization in all investigated rock types except a dacite. The following virtual geomagnetic poles were obtained: Basalt and quartz diabase (oldest): D = 59°, I = +66°, ₉₅ = 4.8, pole 49°N, 93°E. Diabase: D = 210°, I = −15°, ₉₅ = 15.0, pole 47°N, 167°E. Massive sulphide ores: D = 107°, I = +63°, ₉₅ = 8.7, pole 18°N, 80°E. Peridotite: D = 131°, I = +54°, ₉₅ = 10.9, pole 2°S, 72°E. Amphibolitized diabase (youngest): D = 293°, I = +59°, ₉₅ = 12.6, pole 40°S, 145°E. The longidutinal difference in pole positions between the oldest and the youngest rocks is interpreted as being due to a post-Permian counterclockwise rotation of the studied region in relation to the African continent. In addition, there are indications of local rotational movements within the Küre area.

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