Fractal analysis of a mineralised vein deposit: Curraghinalt gold deposit, County Tyrone

Effects of diagenesis (cement precipitation) during fracture opening on fracture aperture-size scaling in carbonate rocks

“…8b) at roughly five iterations per new fracture, and the exponent slowly decreases with increasing number of increments per new fracture. This exponent range, between 0.5 and 1.0, is similar to those of natural fracture populations that we found and those found in previous studies (Wong et al 1989;Barton & Zoback 1992;Marrett 1996;McCaffrey & Johnston 1996;Marrett et al 1999;Hooker et al 2011).…”

“…Gudmundsson 1987;Barton & Zoback 1992;McCaffrey & Johnston 1996;Marrett et al 1999;Ortega et al 2006). Such scaling patterns imply scale invariance that potentially can be used to extrapolate observed fracture frequency to unobserved scales (Laubach & Gale 2006;Hooker et al 2009).…”

Self-similar fractal analysis of gold mineralization of Dayingezhuang disseminated-veinlet deposit in Jiaodong gold province, China

“…A number of fracture features commonly show fractal distributions, such as fracture aperture (Laubach and Ward, 2006), fracture intensity (Ortega et al, 2006), fault displacements and lengths (Aviles et al, 1987;Okubo and Aki, 1987;Walsh et al, 1991;Jackson and Sanderson 1992;Manning 1994;Fossen and Rørnes 1996;Knott et al, 1996;Needham et al, 1996;Nicol et al, 1996;Watterson et al, 1996;Yielding et al, 1996;Pickering et al, 1997), earthquake magnitudes (Turcotte, 1997;Dimri, 2005), particle sizes of comminuted rock and fault gouge (Sammis and Biegel 1989;Korvin, 1992). The thickness distributions of veins have also frequently been described by power-law relationships (Monecke et al, 2001;Sanderson et al, 1994;Clark et al, 1995;McCaffrey and Johnston 1996;Roberts et al, 1998;Monecke et al, 2005). Mandelbrot (1983) first suggested that mineral distribution conforms to fractal distribution.…”

Geological evidence for neotectonic activity during deglaciation of the southern Sperrin Mountains, Northern Ireland

“…Fluid flow may be driven by the geothermal heat flux acting along bedrock lineaments (Hickman et al, 1995), and in Ireland enhanced heat fluxes have been associated with igneous bodies, such as the TIC, and other structural features (Brock, 1989). Hydrothermal mineralisation is also known to have been focused along the Omagh Fault (McCaffrey and Johnston, 1996;Wilkinson and Johnson, 1996).…”