In this paper, we report on a biostratigraphic, magnetostratigraphic, and stable isotope (δ13C and 3He) analysis across three pelagic limestone sections of the Campanian Scaglia Rossa Formation exposed in the classic Bottaccione Gorge at Gubbio (Umbria region), near the village of Furlo, and near the town of Apiro (both in the Marche region), all located in the Umbria-Marche basin of the northeastern Apennines of central Italy. These sections record the coincidental occurrence of an extraterrestrial 3He (3HeET) anomaly known as K1 and a negative shift in the δ13C record known as the early Campanian event. Cyclostratigraphic spectral analysis of the Furlo section based on a high-resolution magnetic susceptibility record in these pelagic limestones revealed that the regular orbitally forced Milankovitch cycles are somewhat disturbed or blurred through the interval of the coincident 3HeET K1 anomaly and the early Campanian event isotopic anomaly, suggesting a causal effect resulting from the enhanced influx of extraterrestrial material (i.e., interplanetary dust particles and a myriad of small meteorite impacts). This would have altered the transparency of the atmosphere, causing a short-lived climate change event.

中文翻译：

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宇宙成因 3He 异常 K1 与翁布里亚-马尔凯系列中上层石灰岩中记录的早期坎帕尼亚同位素事件 (ECE)（意大利）

在本文中，我们报告了对暴露在古比奥（翁布里亚地区）经典 Bottaccione 峡谷（靠近 Furlo 村）的坎帕尼亚 Scaglia Rossa 组的三个远洋石灰岩部分进行的生物地层、磁性地层和稳定同位素（δ13C 和 3He）分析，以及阿皮罗镇附近（均位于马尔凯大区），均位于意大利中部亚平宁山脉东北部的翁布里亚-马尔凯盆地。这些剖面记录了被称为 K1 的地外 3He (3HeET) 异常的巧合，以及被称为早期坎帕尼亚事件的 δ13C 记录负移。基于这些远洋灰岩中的高分辨率磁化率记录对 Furlo 剖面进行的旋回地层光谱分析表明，在同时出现的 3HeET K1 异常和早期坎帕尼亚事件同位素异常的间隔期间，规则的轨道强迫米兰科维奇循环受到一定程度的干扰或模糊，这表明因果效应是由于外星物质（即行星际尘埃颗粒和无数小型陨石撞击）流入量的增加而产生的。这会改变大气的透明度，导致短暂的气候变化事件。