Hydrothermal systems, mud volcanoes, hybrid environments such as sediment-hosted hydrothermal systems and piercement structures in general are among the most spectacular geological phenomena on Earth. Several studies demonstrated that these structures play a key role in the evolution of our planet and the cycles of life during several geological eras. Active piercements are usually characterized by deep-rooted plumbing systems and complex geochemical reactions where life can adapt to thrive in extremely harsh environments making them ideal targets for deep biosphere exploration. The geophysical signals associated to such environments are often ambiguous and difficult to interpret. The elevated pore pressures often encountered at depth and the high flow rates make these structures ideal natural laboratories to capture precursors of seismic events and dynamically triggered geological processes. Piercement structures have often been reported to respond to earthquakes and external forcing.

This session welcomes contributions from geophysical, geochemical, microbial, geological, numerical and laboratory studies to promote a better understanding of modern and palaeo piercement phenomena. In particular we call for studies related to 1) investigations controlling pre-existing geological structures; 2) the geochemical reactions occurring at depth and at the surface including microbiological studies; 3) the investigation of such systems with geophysical methods; 4) experimental and numerical studies; 5) the survey and the monitoring of these settings and environments to learn the dynamics of the extinct systems from the active ones; 6) the study of palaeo piercements as well as their effects on palaeo climate.

Co-organized as BG4.6
Convener: Matteo Lupi | Co-convener: Adriano Mazzini
| Fri, 12 Apr, 08:30–10:15
Room -2.91
| Attendance Fri, 12 Apr, 10:45–12:30
Hall X2

Attendance time: Friday, 12 April 2019, 10:45–12:30 | Hall X2

Chairperson: Adriano Mazzini
X2.344 |
Lena Ray, Bettina Scheu, Cristian Montanaro, Shane Cronin, and Candice Bardsley
X2.345 |
Natalia Kharitonova, Anna Korzun, Ivan Bragin, Vasily Lavrushin, George Chelnokov, and Anna Demonova
X2.346 |
Maren Walter, Andreas Türke, René Neuholz, Bernhard Schnetger, Jürgen Sültenfuß, and Sharon Walker
X2.347 |
Guillaume Mauri, Matteo Lupi, Alesssandra Sciarra, Karyono Karyono, Stephen A. Miller, Riccardo Minetto, and Adriano Mazzini
X2.348 |
| Highlight
Adriano Mazzini, Alessandra Sciarra, Giuseppe Etiope, Alwi Husein, and Henrik Svensen
X2.349 |
Alessandra Sciarra, Livio Ruggiero, Adriano Mazzini, Stefano Graziani, Giovanni Romeo, Giuseppe Di Stefano, Sabina Bigi, and Alwi Hussein
X2.350 |
Walter Menapace, Deborah Tangunan, Michael Maas, Christoph Vogt, and Achim Kopf
X2.352 |
High-resolution and small-scale marine sparker multichannel seismic imaging of mud volcano
Di Luo, Feng Cai, Qing Li, Yunbao Sun, and Ang Li
X2.353 |
Alexey L. Sobisevich, Irina N. Puzich, and Zalim I. Dudarov