Predicting porosity reduction due to silica diagenesis using seismic reflection data

Silica diagenesis in Cenozoic mudstones of the North Viking Graben: physical properties and basin modelling

“…By changing the input parameters, these porosity‐depth functions can be adapted to describe the diagenetic porosity reductions offshore Norway (e.g. Meadows & Davies, ), Japan (e.g. Tada & Iijima, ) and California (e.g.…”

Syn-thrusting polygonal normal faults exposed in the hinge of the Cingoli anticline, northern Apennines, Italy

“…Polygonal faults are thought to form during early burial and diagenesis as a consequence of heterogeneous lateral volume changes caused by or associated to laterally-heterogeneous mechanisms and parameters such as sediment compaction, fluid flow and pressure, gravitational loading, and chemically driven volumetric contraction or syneresis (Cartwright, 1994a(Cartwright, , 2011Cartwright and Lonergan, 1996;Cosgrove, 1998;Dewhurst et al, 1999;Watterson et al, 2000;Goulty, 2001Goulty, , 2008Gay et al, 2004;Dehandschutter et al, 2005;Goulty and Swarbrick, 2005;Victor and Moretti, 2006;Gay and Berndt, 2007;Davies et al, 2009;Meadows and Davies, 2009;Alves, 2010;Ireland et al, 2010;Davies and Ireland, 2011). Despite numerous studies, the origin of these faults remains still largely controversial.…”

High-resolution architecture of a polygonal fault interval inferred from geomodel applied to 3D seismic data from the Gjallar Ridge, Vøring Basin, Offshore Norway

“…2, 5a & 6a) (Berndt et al, 2004;Hansen et al, 2005;Davies et al, 2009;Neagu et al, 2010;Ireland et al, 2011). This conversion induced a porosity reduction of 25% (Meadows and Davies, 2009) by dissolution-precipitation processes and resulted in an increase of bulk density from 1.3 to 1.55 g/cm3 (well data from Fig. 2), thus representing a change in mechanical properties of the hosting sediments (Nobes et al, 1992;Guerin and Goldberg, 1996).…”