Data report : Electrical properties of gabbroic and troctolitic rocks from IODP Hole U1309D, Atlantis Massif : In Blackman, D.K., Ildefonse, B., John, B.E., Ohara, Y., Miller, D.J., MacLeod, C.J., and the Expedition 304/305 Scientists

Benoit Ildefonse (1) , Marion Drouin (1) , Marie Violay (1) , Philippe Pezard (1)

1 Géosciences Montpellier

In this report we present the results of laboratory measurements carried out to explore the electrical properties of gabbroic and troctolitic samples from Integrated Ocean Drilling Program (IODP) Hole U1309D in the Atlantis Massif, an oceanic core complex located at 30°N on the Mid-Atlantic Ridge. Oceanic core complexes are presumably localized in portions of heterogeneous oceanic crust that are relatively rich in igneous rocks and are the locus of significant hydrothermal activity. Electrical properties of igneous rocks are used to discuss the rocks' porosity structure as a function of mineralogy, alteration processes, and deformation. Electrical properties of the gabbroic suites sampled during IODP Expedition 304/305 can contribute to the understanding of these processes in the Atlantis Massif. We present the full suite of electrical data together with density and porosity measurements on the same suite of samples.

Mots clés: IODP; Expedition 304/305

Domaines: Géophysique [physics.geo-ph]; Géophysique [physics.geo-ph]; Milieux et Changements globaux

Benoit Ildefonse, Marion Drouin, Marie Violay, Philippe Pezard. Data report : Electrical properties of gabbroic and troctolitic rocks from IODP Hole U1309D, Atlantis Massif : In Blackman, D.K., Ildefonse, B., John, B.E., Ohara, Y., Miller, D.J., MacLeod, C.J., and the Expedition 304/305 Scientists. Proceedings of the Integrated Ocean Drilling Program, 2009, 304/305, pp.College Station, TX (Integrated Ocean Drilling Program Management International, Inc.). ⟨10.2204/iodp.proc.304305.204.2009⟩. ⟨hal-00464179⟩