An anomalous layer enriched with chemical elements indicating the presence of terrigenous matter was discovered in the sediment core of Zapovednoe Lake located 60 km from the epicenter of the Tunguska event (1908) using synchrotron radiation X-ray fluorescence spectroscopy (SR–XRF). Radioisotope measurements indicate that the age of the layer is consistent with the date of the catastrophe. Apparently, the anomalous layer was formed as a result of an intense terrigenous matter inflow from the water catchment area due to massive forest falls and subsequent wildfires caused by the Tunguska event. Thus, it is established that targeted searches for microparticles of extraterrestrial origin can be carried out in the discovered and dated anomalous bottom sediment layer.

中文翻译：

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基于 SR-XRF 数据的 Zapovednoe 湖沉积物中通古斯事件 (1908) 的痕迹

使用同步辐射 X 射线荧光光谱法 (SR-XRF) 在距离通古斯事件（1908 年）震中 60 公里的 Zapovednoe 湖沉积岩芯中发现了一个富含化学元素的异常层，表明存在陆源物质。放射性同位素测量表明该层的年龄与灾难发生的日期一致。显然，异常层的形成是由于通古斯事件引起的大规模森林倒塌和随后的野火导致大量陆源物质从集水区流入而形成的。因此，确定可以在已发现并确定年代的异常底部沉积层中对来自外星的微粒进行有针对性的搜索。