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首页> 外文期刊>Journal of Volcanology and Geothermal Research >Formation of Stanley Patch volcanic cone: New insights into the evolution of Deception Island caldera (Antarctica)
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Formation of Stanley Patch volcanic cone: New insights into the evolution of Deception Island caldera (Antarctica)

机译：斯坦利补丁火山锥的形成：进入欺骗岛Caldera的演变的新见解（南极洲）

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摘要

Deception Island (South Shetland Islands) is one of the most active volcanoes in Antarctica, with more than 20 explosive eruptive events registered over the past centuries. Recent eruptions (1967, 1969, and 1970) and volcanic unrest episodes (1992, 1999, and 2014-2015) demonstrate that volcanic activity is likely occurring in the future. This is of special concern for scientists, logistic personnel, and tourists, since the South Shetland Islands are an important tourist destination and host numerous year-round and seasonal scientific stations and base camps. Significant efforts have been made to understand the complex magmatic and volcanic evolution of Deception Island with special interest on its subaerial part. However, studies on submerged volcanic cones within Port Foster, the sea-flooded part of Deception Island's caldera depression, are comparatively scarce. Here, we provide a full characterization of Stanley Patch volcano, the largest of these volcanic edifices. Estimated morphometric parameters based on new multibeam bathymetric data, supported by petrographic and chemical observations from rock samples collected on the crater rim, reveal that Stanley Patch volcano grew in a subaerial environment. This result, combined with previous findings and new sedimentological evidence from our ultra-high resolution seismic profiles, allow to further detail the island's geologic evolution since the caldera collapse. We conclude that the complete flooding of Port Foster could have only occurred after the formation of Stanley Patch volcano, i.e. during the last similar to 2000 years, and in a time period of a few days or less. (C) 2021 The Author(s). Published by Elsevier B.V.
机译：欺骗岛（南方驻地群岛）是南极洲最活跃的火山之一，在过去几个世纪里注册了20多次爆炸性的爆发事件。最近爆​​发（1967年，1969年和1970年）和火山骚扰集（1992年，1999年和2014-2015）表明，未来可能发生火山活动。这对科学家，物流人员和游客来说是特别关注的，因为南方驻地岛屿是一个重要的旅游目的地，并承担着众多全年和时令科学站和基本营地。已经提出了重大努力，了解欺骗岛的复杂岩石和火山的演变，具有特殊兴趣其子系统部分。然而，对福斯特港内淹没的火山锥体，海洋淹没的部分火山岩抑郁症的淹没部分相对稀缺。在这里，我们提供了最大的斯坦利贴片火山，这是这些火山的重叠中最大的完整表征。估计基于新的多阵线碱基数据的形态学参数，由火山口射门上收集的岩石样本的岩石类和化学观测支持，揭示了斯坦利贴片火山在山脉环境中增长。这种结果与来自我们超高分辨率地震型材的先前发现和新的沉降学证据相结合，可以进一步详细介绍自卡尔德拉崩溃以来岛上的地质演变。我们得出结论，港口福斯特的完全洪水只能在形成斯坦利补丁火山之后发生，即在上次相似，在2000年期间，在几天或更短的时间内。 （c）2021提交人。由elsevier b.v出版。

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  • 来源
    《Journal of Volcanology and Geothermal Research》 |2021年第7期|107249.1-107249.19|共19页
  • 作者

    Hopfenblatt J.; Geyer A.; Aulinas M.; Alvarez-Valero A. M.; Gisbert G.; Kereszturi G.; Ercilla G.; Gomez-Ballesteros M.; Marquez A.; Garcia-Castellanos D.; Pedrazzi D.; Sumino H.; Hoskuldsson A.; Giralt S.; Angulo-Preckler C.;

  • 作者单位

    CSIC Geosci Barcelona Geo3Bcn Lluis Sole & Sabaris S-N Barcelona 08028 Spain|Univ Barcelona Dept Mineral Petrol & Geol Aplicada Marti Franques S-N Barcelona 08028 Spain;

    CSIC Geosci Barcelona Geo3Bcn Lluis Sole & Sabaris S-N Barcelona 08028 Spain;

    Univ Barcelona Dept Mineral Petrol & Geol Aplicada Marti Franques S-N Barcelona 08028 Spain;

    Univ Salamanca Dept Geol Salamanca 37008 Spain;

    CSIC UCM Inst Geociencias Severo Ochoa 7 Madrid 28040 Spain;

    Massey Univ Sch Agr & Environm Volcan Risk Solut Palmerston North New Zealand;

    ICM CSIC Inst Ciencias Mar Continental Margin Grp Paseo Maritimo Barceloneta 37-49 Barcelona 08003 Spain;

    Inst Espanol Oceanog C Corazon Maria 8 Madrid 28002 Spain;

    Univ Rey Juan Carlos Area Geol ESCET Madrid 28933 Spain;

    CSIC Geosci Barcelona Geo3Bcn Lluis Sole & Sabaris S-N Barcelona 08028 Spain;

    CSIC Geosci Barcelona Geo3Bcn Lluis Sole & Sabaris S-N Barcelona 08028 Spain;

    Univ Tokyo Dept Gen Syst Studies Grad Sch Arts & Sci Tokyo Japan;

    Univ Iceland Inst Earth Sci Nord Volcanol Ctr Sturlugata 7 IS-101 Reykjavik Iceland;

    CSIC Geosci Barcelona Geo3Bcn Lluis Sole & Sabaris S-N Barcelona 08028 Spain;

    UiT Arctic Univ Norway Norwegian Coll Fishery Sci Tromso Norway|IRBio Res Inst Biodivers Barcelona Spain;

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  • 正文语种 eng
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  • 关键词

    Deception Island; South Shetland Islands; Antarctic volcanism; Caldera flooding; Caldera evolution; Seismic profiles;

    机译：欺骗岛;南方驻地群岛;南极火山灾害;火山口洪水;火山口进化;地震概况;

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