Archeomagnetic data from the Levant revealed periods within the Holocene with fast and extreme changes in the geomagnetic field. Yet, the availability of the archeomagnetic data is sporadic and the correlation with the available sedimentary records from the region is rather poor. To further explore decadal variations in the directions of the field, we investigate three outcrops of the late Holocene Dead Sea that are exposed along the western retreating shores of the modern lake. The sediments were deposited under spatially varying limnological‐environmental conditions, influencing their magnetic properties. The southern section, located near Ein‐Gedi Spa (EG section) is dominated by detrital titanomagnetite whereas the northern sections, Nahal Og (Og section) and Ein‐Feshkha (EF section), are dominated by authigenic greigite. The chronology of the sections was established by radiocarbon dating of short lived organic debris. The magnetic data were obtained in a 2 cm resolution. The EF section, spanning the time interval from ca. 2,500 cal yr BP to ca. 1,000 cal yr BP, is dominated by greigite and thus providing the most robust geomagnetic record with precise paleomagnetic directions. Greigite forms very early in the sediment and the effects of smoothing and the inclination shallowing are negligible. The new data reveal a maximal deviation of 20° from the geocentric axial dipole field between 2,400 to 2,200 cal yr BP accompanied with a fast swing in inclination from 60° to 35° over about a century. This suggests high geomagnetic field activity associated with the Levantine Iron Age geomagnetic anomaly.

中文翻译：

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含晚辉岩死海沉积物的年代际地磁长期变化

来自黎凡特的地磁数据揭示了全新世时期，地磁场发生了快速而极端的变化。但是，地磁数据的可用性是零星的，并且与该地区可用的沉积记录的相关性很差。为了进一步探索沿田间方向的年代际变化，我们研究了晚全新世死海的三个露头，这些露头在现代湖西撤退沿岸露出。沉积物是在空间变化的岩性环境条件下沉积的，从而影响了它们的磁性。位于Ein-Gedi Spa附近的南部部分（EG部分）以碎屑钛磁铁矿为主，而北部Nahal Og（Og部分）和Ein-Feshkha（EF部分）则以自生的钙铁矿为主。断面的年代是通过对短寿命有机碎片进行放射性碳测年确定的。磁数据以2 cm的分辨率获得。EF部分，跨度从ca开始的时间间隔。2500 cal BP到大约 1,000 cal yr BP以钙铁矿为主，因此提供了最精确的古磁方向的最可靠的地磁记录。钙铁矿在沉积物中很早就形成，而平滑作用和倾角变浅的影响可以忽略不计。新的数据显示，距地心轴向偶极子场在2,400至2,200 cal yr BP之间有最大20°的偏差，并且在大约一个世纪内，从60°到35°的快速倾斜也发生了变化。这表明与黎凡特铁器时代的地磁异常有关的高地磁场活动。