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Influence of strain history on the mechanical and micro-fabric evolution of calcite rocks: insights from torsion experiments

Delle Piane, Claudio ; Burlini, Luigi

In: Swiss Journal of Geosciences, 2008, vol. 101, no. 2, p. 361-375

Seismic properties of the upper mantle beneath Lanzarote (Canary Islands): Model predictions based on texture measurements by EBSD

Vonlanthen, Pierre ; Kunze, Karsten ; Burlini, Luigi ; Grobéty, Bernard

In: Tectonophysics, 2006, vol. 428, no. 1-4, p. 65-85

We present a petrophysical analysis of upper mantle xenoliths, collected in the Quaternary alkali basalt fields (Series III and IV) from the island of Lanzarote. The samples consist of eight harzburgite and four dunite nodules, 5 to 15 cm in size, and exhibit a typical protogranular to porphyroclastic texture. An anomalous foliation resulting from strong recovery processes is observed in half of...

Reaction-induced strain localization: torsion experiments on dolomite

Pianea, Claudio Delle ; Burlini, Luigi ; Grobéty, Bernard

In: Earth and Planetary Science Letters, 2007, vol. 256, no. 1-2, p. 36-46

We investigated the mechanical behaviour and microstructural evolution of a dolomite marble from Mt. Frerone (Adamello, N-Italy) during decarbonation to calcite and periclase in torsion experiments. Tests were performed in a Paterson gas-medium apparatus on cylindrical samples of 10 mm diameter and 10 mm length. Experiments were conducted at 800 °C, 300 MPa confining pressure under both vented...