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首页> 外文期刊>Journal of Volcanology and Geothermal Research >Ground movement at Somma-Vesuvius from Last Glacial Maximum
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Ground movement at Somma-Vesuvius from Last Glacial Maximum

机译：从上一次冰川最大值开始索马维苏威火山的地面运动

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摘要

Detailed micropalaeontological and petrochemical analyses of rock samples from two boreholes drilled at the archaeological excavations of Herculaneum,~7 km west of the Somma-Vesuvius crater, allowed reconstruction of the Late Quaternary palaeoenvironmental evolution of the site. The data provide clear evidence for ground uplift movements involving the studied area. The Holocenic sedimentary sequence on which the archaeological remains of Herculaneum rest has risen several meters at an average rate of ~4 mm/yr. The uplift has involved the western apron of the volcano and the Sebeto-Volla Plain, a populous area including the eastern suburbs of Naples. This is consistent with earlier evidence for similar uplift for the areas of Pompeii and Sarno valley (SE of the volcano) and the Somma-Vesuvius eastern apron. An axisimmetric deep source of strain is considered responsible for the long-term uplift affecting the whole Somma-Vesuvius edifice. The deformation pattern can be modeled as a single pressure source, sited in the lower crust and surrounded by a shell of Maxwell viscoelastic medium, which experienced a pressure pulse that began at the Last Glacial Maximum.
机译：在Somma-Vesuvius火山口以西约7公里处的Herculaneum考古发掘的两个钻孔中，对岩石样品进行了详细的古古生物学和岩石化学分析，从而得以重建了该地区的第四纪晚期古环境。数据为涉及研究区域的地面隆起运动提供了明确的证据。赫库兰尼姆考古遗迹所在的全新世沉积序列以每年约4毫米的平均速率上升了几米。隆升涉及火山的西部围裙和Sebeto-Volla平原，这是一个人口稠密的地区，包括那不勒斯的东郊。这与庞贝和萨尔诺河谷（火山东南部）和索马-维苏威火山东围裙地区类似隆升的早期证据一致。轴对称的深应变源被认为是影响整个索马-维苏威火山大厦的长期隆升的原因。可以将变形模式建模为单个压力源，位于下地壳中，并被麦克斯韦粘弹性介质的壳包围，该介质经历了从上次冰期最大值开始的压力脉冲。

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  • 来源
    《Journal of Volcanology and Geothermal Research》 |2012年第15期|p.24-35|共12页
  • 作者

    Aldo Marturano; Giuseppe Aiello; Diana Barra; Lorenzo Fedele; Vincenzo Morra;

  • 作者单位

    Istituo Nazionale di Geofisica e Vulcanologia - sez. Osservatorio Vesuviano, via Diocleziano 328, 80124 Naples, Italy;

    Dipartimento di Scienze della Terra, Universita degli studi di Napoli Federico Ⅱ-Largo San Marcellino 10, 80136 Naples, Italy;

    Dipartimento di Scienze della Terra, Universita degli studi di Napoli Federico Ⅱ-Largo San Marcellino 10, 80136 Naples, Italy;

    Dipartimento di Scienze della Terra, Universita degli studi di Napoli Federico Ⅱ-Via Mezzocannone 8, 80134 Naples, Italy;

    Dipartimento di Scienze della Terra, Universita degli studi di Napoli Federico Ⅱ-Via Mezzocannone 8, 80134 Naples, Italy;

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