Lo stato delle proposte di perforazione nell area mediterranea
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1 Lo stato delle proposte di perforazione nell area mediterranea Scientific Drilling in the Mediterranean Sea Perforazione della Caldera dei Campi Flegrei Una proposta anfibia IODP-ICDP: La componente marina (IODP) M. Sacchi, G. De Natale, V. Spiess, L. Steinmann & Campi Flegrei IODP proposal writing group V. Acocella, A Bonneville, M. Corradino, S. De Silva, L. Fedele, L. Ferranti, N. Geshi, D. Insinga, M. Jurado, C. Kilburn, F. Matano, A. Milia F. Molisso, R. Moretti, V. Morra, S. Passaro, F. Pepe, P. Petrosino, S. Porfido, C. Scarpati, H. Schmincke, R. Somma, M. Sumita, S. Tamburrino, R. Tonielli, M. Torrente, C. Troise, M. Vallefuoco, G. Ventura Workshop IODP-Italia Lo stato delle proposte di perforazione nell area mediterranea Scientific Drilling in the Mediterranean Sea CNR, Roma, gennaio 2018 Aula Marconi
2 Campi Flegrei Caldera Main eruptive history Campania Ignimbrite (CI) (39 ka) - Plinian Neapolitan Yellow Tuff (NYT) (15 ka) Phreato-Plinian >60 post-caldera eruptions ka (Epoch I) ka (Epoch II) ka (Epoch III) Most recent: 1538 AD (M. Nuovo)
3 Site survey data package ( )
4 Campi Flegrei Caldera Caldera resurgence ( long-term ) ~80 m uplift within less than 15 kys Emersion of the La Starza terrace. Average uplift rate in the order of 9 12 mm/year (15-4 ka) Recent unrest ( short term ) Since 1950s net uplift > 4 m
5 ECORD MagellanPlus Workshop Series Program Structure and Evolution of Magmatic and Hydrothermal Volcanic Systems in offshore collapse/resurgent calderas: Development of an IODP Drilling Proposal at Campi Flegrei linking to active ICDP Drilling Initiatives MagellanPlus Workshop V. Spiess, G. De Natale, M. Sacchi, L. Steinmann Napoli, Italy (25-28 February, 2017)
6 Campi Flegrei MagellanPlus Workshop (Napoli, Italy, February 2017) proximal record median record Joint submission to IODP&ICDP of an Amphibious Drilling Droposal (ADP) by the end of 2018 IODP component: should focus on integrated stratigraphy of the caldera fill and resurgence, petrology and architecture of shallow structural levels (0-500 m depth) ICDP component should focus on rock-fluid properties, physical-chemical processes, the and the geothermal system at greater depth. ( m depth)
7 a Drilling target CF-14: distal tephrostratigraphic record CF- 14 b NYT (15 ka)-cf Soccavo 1(ca 13 ka) -CF Pomici Principali (ca 13 ka)-cf Verdoline (ca 19 ka)-sv Tufi Biancastri (Y3) (ca. 30 ka)-cf Campanian Ignimbrite (Y-5) (39 ka)-cf Mount Epomeo Green Tuff (55 ka)-i
8 Campi Flegrei (NYT) caldera: high-resolution multi-channel reflection seismics Schmincke, 2004 Sacchi et al., 2009; Steinmann, Spiess & Sacchi, 2016
9 Campi Flegrei (NYT) caldera: high-resolution multi-channel reflection seismics Drilling target CF-01: stratigraphy of the caldera fill down to top of CI (?) (39 ka) Resurgent dome CF-01 Drilling target CF-03: shallow intrusion at the top of NYT CF-03 (alternate) ~ 110 m ~ 200 m Uplift ~ 80m Average uplift rate: 9 12 CI? (39ka) mm/year (15-4 ka) Sacchiet al., 2009, 2014 ; Steinmann, Spiess & Sacchi, 2016
10 Very high-resolution single-channel reflection seismics SSW Seistec profile NNE 50 ms Drilling target CF-02 (alternate): timing and style of deformation associated with uplift of resurgent dome 100 ms CF-02 (alternate) 150 ms ~ 60 m 200 ms
11 high-resolution multi-channel reflection seismics CF-06 ~ 50 m Drilling target CF-06: age and petrology of volcanic basement older than CI (39 ka) Sacchi et al., 2009; Steinmann, Spiess & Sacchi, 2016
12 Monogenic volcanoes often associated with diffused hydrothermal venting along ring fault zone W E Low-frequency, high-amplitude, reverse-phase reflections Acoustic turbidity / blanking Migrating/trapped hydrothermal fluids Steinmann, Spiess & Sacchi, 2017
13 high-resolution multichannel reflection seismics Drilling target CF-08: nature and age of M.Dolce - Pampano intrusion (< 6 ka?) CF-08 ~ 200 m Sacchi et al., 2009
14 Soft sediment deformation and diapirism at hydrotermal vents mixing between gas, marine and volcaniclastic deposits mantle-derived fluids mixed with gases from decarbonation reactions of crustal rocks MS = Marine sediments fault fault PS = Chaotically mixed pumices ( ka ) and present sands base NYT (15 ka) Drilling target CF-09: inner structure of pagodas; cold vs. hot hydrothermal system C116 Gravity core 10 cm C116 Gravity core Top fault CF-09 fault MS Unconsolidated volcaniclastics (NYT?) PS PS Passaro et al., 2016 ~ 120 m Bottom
15 Napoli half-graben basin fill NW SE
16 Napoli half-graben basin fill NW CF-11 CF-12 CF-013 SE CF-10 ~ 200 m ~ 200 m ~ 200 m ~ 200 m Drilling targets (transect) CF-10-13: a composite section of the upper Quaternary mixed siliciclastic volcaniclastic succession of the Naples Bay.
17 Napoli half-graben basin fill Campania Ignimbrite (CI) and pre-ci ignimbrites CF-013 CF-12 ~ 200 m ~ 200 m Milia and Torrente, 2007
18 Campi Flegrei Amphibious Drilling Proposal (IODP-ICDP) ICDP proposed site IODP proposed sites Submission due by October 2018 CF- 14 CF- 01 CF- 02 CF- 03 ICDP site CF- 04 CF- 07 CF- 05 CF- 06 CF- 08 CF- 09 CF- 10 CF- 11 CF- 12 CF- 13
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