CRISPINI L.

Paleostress state reconstructions using fault-slip data yield the orientation of principal stress axes (σ1 > σ2 > σ3) and the ratio of the difference between principal stress magnitudes, i.e. the reduced stress tensors. To reconstruct the complete stress tensor (defined by six independent variables), we need to determine the two remaining...

Estimating the paleo-depth of a fossil fault usually requires the application of complex and highly specialized techniques. We propose a new method, that is based mainly on field data and simplifies the process: - calculation of the reduced stress tensor (with four variables) through inversion of fault-slip data; - calculation of the complete...

We present the digital geological map of an area located in the Regional Natural Park of "Capanne di Marcarolo" (http://www.areeprotetteappenninopiemontese.it/, Alessandria, Italy), that has a great number of standing features both for its geodiversity and biodiversity. The aim of this work is to illustrate the geodiversity of an area that is...

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The Rennick Geodynamic Belt (RGB) is a regionally-sized deformation corridor separating the tectonic units of the Northern Victoria Land (NVL) and of the East Antarctic craton (EAC). It develops along the onland propagation of the Tasman Fracture Zone of the Southern Ocean between Australia and East Antarctica. The RGB is characterized by a...

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This new map at 1:25,000 scale covers an area in the Western Alps (Italy), where the HP metamorphic basement is covered by a (predominantly clastic) late- and post-orogenic upper Eocene-lower Miocene cover. This provides unequivocal evidence that exhumation of the metamorphic units was accomplished by the lower Oligocene. The basement is made...

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The Australia-New Zealand-Antarctica plate fragments (ANZAPF) evolved as consequence of break-up and fragmentation of Gondwana since the late Early Jurassic. Antarctica occupied the centre of Gondwana, and it thus holds a key position for any plate tectonic reconstruction. Northern Victoria Land (NVL) is located at the Pacific end of the...

Faults generally act as preferential pathways for fluids; the high fracture density within their damage zones can increase the host-rock permeability, enhancing the rock reactive surfaces and speeding-up fluid-rock interactions. Accordingly, fault zones, in the presence of an aqueous CO2-rich fluid, could drive and enhance the natural...