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<p>The interaction between magmatic systems and ice sheet dynamics in polar ocean basins is a critical, yet poorly known Earth system process with implications for cryosphere evolution and planetary analogs. The submarine segment of the Terror Rift in the Ross Sea, Antarctica, represents a unique seafloor environment where volcanic activity occurs beneath and adjacent to multiple advances of major ice sheets. Here we present observational data acquired during the most recent U.S. research vessel Nathaniel B. Palmer expedition NBP25-01 (February-April 2025), including high-resolution seafloor bathymetry, rock dredging and seafloor imagery in the discovery of widespread explosive basaltic volcanism erupted along rift structures that occurred both synchronously with and following seafloor groundings of ice sheets, including during the Holocene. Our results support advanced concepts of mantle dynamics, magma-ice interactions and the evolution of rifted polar regions and establish the Terror Rift as an analog for cryovolcanic environments on icy-planets and moons.</p>

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Subglacial explosive volcanism in the Ross Sea of Antarctica

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年11月18日

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  • Masako Tominaga,
  • Kurt Panter,
  • Carole Berthod,
  • Maurice Tivey,
  • Jyun-Nai Wu,
  • Jonas Preine,
  • Mathilde Cannat,
  • Florian Neumann,
  • Katherine Shanks,
  • Jacquelyn Kalemba,
  • Eric Hayden,
  • Marissa Small,
  • Dan Wildrick,
  • Hannah Gray,
  • Andrew Micks,
  • Chet Balding,
  • Christian Kopka,
  • Emma Hayward,
  • Hila Shooter,
  • Issac Treaster,
  • Ken Block,
  • Lily Petersen,
  • Thea Rae

摘要

The interaction between magmatic systems and ice sheet dynamics in polar ocean basins is a critical, yet poorly known Earth system process with implications for cryosphere evolution and planetary analogs. The submarine segment of the Terror Rift in the Ross Sea, Antarctica, represents a unique seafloor environment where volcanic activity occurs beneath and adjacent to multiple advances of major ice sheets. Here we present observational data acquired during the most recent U.S. research vessel Nathaniel B. Palmer expedition NBP25-01 (February-April 2025), including high-resolution seafloor bathymetry, rock dredging and seafloor imagery in the discovery of widespread explosive basaltic volcanism erupted along rift structures that occurred both synchronously with and following seafloor groundings of ice sheets, including during the Holocene. Our results support advanced concepts of mantle dynamics, magma-ice interactions and the evolution of rifted polar regions and establish the Terror Rift as an analog for cryovolcanic environments on icy-planets and moons.