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首页> 外文期刊>NRIAG Journal of Astronomy and Geophysics >1st paleomagnetic investigation of Nubia Sandstone at Kalabsha, south Western Desert of Egypt
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1st paleomagnetic investigation of Nubia Sandstone at Kalabsha, south Western Desert of Egypt

机译：埃及西南沙漠Kalabsha努比亚砂岩的第一次古地磁研究

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Two profiles have been sampled from the Nubia Sandstone at Aswan, south Western Desert: the 1st profile has been taken from Abu Aggag Formation and the 2nd one was from Sabaya Formation (23.25 °N, 32.75 °E). 136 oriented cores (from 9 sites) have been sampled. Abu Aggag Formation is of Late Cretaceous (Turonian) and Sabaya Formation is of early Cretaceous (Albian–Cenomanian). The studied rocks are subjected to rock magnetic measurements as well as demagnetization treatment. It has been found that hematite is the main magnetic mineral in both formations. Four profile sections from Abu Aggag Formation, yielded a magnetic component with D = 352.7°, I = 36.6° with α 95 = 5.2° and the corresponding pole lies at Lat. = 82.8 °N and Long. = 283.1 °E. Five profile sections from Sabaya Formation, yielded a magnetic component with D = 348.6°, I = 33.3° with α 95 = 5.8° and the corresponding pole lies at Lat. = 78.3 °N and Long. = 280.4 °E. The obtained paleopole for the two formations lies at Lat. = 80.5 °N and Long. = 281.7 °E. The obtaind magnetic components are considered primary and the corresponding paleopole reflects the age of Nubia Sandstone when compared with the previously obtained Cretaceous poles for Egypt.
机译：从西部沙漠南部阿斯旺的努比亚砂岩采样了两个剖面：第一个剖面来自阿布·阿加格组，第二个剖面来自萨巴亚组（北纬23.25°，东经32.75°）。已对136个定向岩心（来自9个地点）进行了采样。阿布·阿加格组属于白垩纪晚期（突尼斯），萨巴亚组则属于白垩纪早期（阿尔拜－西诺曼尼亚）。所研究的岩石要进行岩石磁测量以及去磁处理。已经发现赤铁矿是两种地层中的主要磁性矿物。 Abu Aggag地层的四个剖面剖面产生的磁分量D = 352.7°，I = 36.6°，α95 = 5.2°，对应的磁极位于Lat。 = 82.8°N和长。 = 283.1°E。 Sabaya地层的五个剖面剖面产生了D = 348.6°，I = 33.3°和α95 = 5.8°的磁性分量，相应的磁极位于Lat。 = 78.3°N和长。 = 280.4°E。获得的两个地层的古极位于拉特。 = 80.5°N和长。 = 281.7°E。与埃及先前获得的白垩纪磁极相比，所获得的磁性成分被认为是主要的，相应的古极反映了努比亚砂岩的年龄。

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