Articles | Volume 33, issue 2
https://doi.org/10.5194/sd-33-219-2024
https://doi.org/10.5194/sd-33-219-2024
Science report
 | 
02 Sep 2024
Science report |  | 02 Sep 2024

Active seismic surveys for drilling target characterization in Ossola Valley: International Continental Scientific Drilling Program (ICDP) project Drilling the Ivrea–Verbano zonE (DIVE) phase I

Andrew Greenwood, György Hetényi, Ludovic Baron, Alberto Zanetti, Othmar Müntener, and the MOS field team

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Cited articles

Barberini, V., Burlini, L., and Zappone, A.: Elastic properties, fabric and seismic anisotropy of amphibolites and their contribution to the lower crust reflectivity, Tectonophysics, 445, 227–244, https://doi.org/10.1016/j.tecto.2007.08.017, 2007. 
Berckhemer, H.: Topographie des “Ivrea-Körpers“ abgeleitet aus seismischen und gravimetrischen Daten, Schweiz Mineral. Petrogr. Mitt., 48, 235–246, 1968. 
Brack, P., Ulmer, P., and Schmid, S.: A crustal magmatic system from Earth mantle to the Permian surface: Field trip to the area of lower Valsesia and val d'Ossola (massiccio dei Laghi, Southern Alps, Northern Italy), Swiss Bull. Angew. Geol., 15, 3–21, 2010. 
Brodie, K. H. and Rutter, E. H.: Deep crustal extensional faulting in the Ivrea Zone (N-Italy), Tectonophysics, 140, 193–212, https://doi.org/10.1016/0040-1951(87)90229-0, 1987. 
Burlini, L.: Parco Nazionale Val Grande: Carta geologica (1 : 25'000), ETH Zurich, Zurich, 2008. 
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Short summary
A set of seismic reflection surveys were conducted in May 2019 in the Ossola Valley, Western Italian Alps, to image the geologic structure below two proposed boreholes. The boreholes plan to penetrate the upper 2 km of the lower continental crust, a zone of much scientific interest. The seismic surveys have defined the valley structure to depths of 550 m, determined the dip of geological banding, and ruled out the possibility of major geologic drilling hazards that could be encountered.
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