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- W2915440475 startingPage "255" @default.
- W2915440475 abstract "Outcrop studies are essential for understanding subsurface fractures, because some key attributes such as length and height distribution cannot be measured using wellbores. Discrepancies between outcrop and subsurface fracture attributes arise because loading paths due to burial, exhumation, and thermal paths differ. Consequently, even where rock type and structural setting are close matches, differences may exist in mechanical properties and fracture growth. Here we investigate petrologic criteria and disseminated arrays of quartz-filled microfractures as tools for comparing and contrasting fractures in outcrop with those as sampled by core for tight gas sandstones. Fracture cements are key diagnostic criteria for proving correspondence between outcrop and core. We offer guidelines on selecting suitable outcrop analogs that differ markedly from current practice. Our illustration uses outcrops and core samples of Late Jurassic to Early Cretaceous Nikanassin Formation, a tight gas sandstone, but aspects of the outcrop vetting procedure can be applied to other rock types. In some core and outcrops, Nikanassin Formation fractures contain quartz and ankerite cement assemblages, crack-seal and rind textures, and aperture size distributions that show that the outcrop and subsurface localities we examined share the same fracture stratigraphy and similar diagenesis. These outcrops can thus be used to measure attributes including those that are unlikely to be captured in core, such as fracture height and length distributions, relative and absolute fracture intensity with structural position, and degree of fill by synkinematic cement. In our example, absolute fracture intensity and distribution of postkinematic carbonate cements are site specific and differ between outcrop and core, but in ways that can be quantified." @default.
- W2915440475 created "2019-03-02" @default.
- W2915440475 creator A5000534001 @default.
- W2915440475 creator A5007000576 @default.
- W2915440475 creator A5008863832 @default.
- W2915440475 date "2019-05-01" @default.
- W2915440475 modified "2023-10-14" @default.
- W2915440475 title "Outcrops as guides to subsurface natural fractures: Example from the Nikanassin Formation tight-gas sandstone, Grande Cache, Alberta foothills, Canada" @default.
- W2915440475 cites W1966710814 @default.
- W2915440475 cites W1970374306 @default.
- W2915440475 cites W1970643315 @default.
- W2915440475 cites W1970826038 @default.
- W2915440475 cites W1975490132 @default.
- W2915440475 cites W1978921187 @default.
- W2915440475 cites W1980779042 @default.
- W2915440475 cites W1984957727 @default.
- W2915440475 cites W1986335547 @default.
- W2915440475 cites W1990270818 @default.
- W2915440475 cites W1990824105 @default.
- W2915440475 cites W1992508631 @default.
- W2915440475 cites W2002319139 @default.
- W2915440475 cites W2006986646 @default.
- W2915440475 cites W2007113664 @default.
- W2915440475 cites W2014612117 @default.
- W2915440475 cites W2014733771 @default.
- W2915440475 cites W2018406138 @default.
- W2915440475 cites W2021673157 @default.
- W2915440475 cites W2022790413 @default.
- W2915440475 cites W2030255868 @default.
- W2915440475 cites W2031275794 @default.
- W2915440475 cites W2036799288 @default.
- W2915440475 cites W2041668731 @default.
- W2915440475 cites W2043252277 @default.
- W2915440475 cites W2043408739 @default.
- W2915440475 cites W2043582295 @default.
- W2915440475 cites W2050629210 @default.
- W2915440475 cites W2051527466 @default.
- W2915440475 cites W2051875053 @default.
- W2915440475 cites W2055239489 @default.
- W2915440475 cites W2055262754 @default.
- W2915440475 cites W2056765139 @default.
- W2915440475 cites W2068455286 @default.
- W2915440475 cites W2069561840 @default.
- W2915440475 cites W2075274578 @default.
- W2915440475 cites W2075309440 @default.
- W2915440475 cites W2079630035 @default.
- W2915440475 cites W2080215198 @default.
- W2915440475 cites W2084055899 @default.
- W2915440475 cites W2085032340 @default.
- W2915440475 cites W2093551220 @default.
- W2915440475 cites W2096418476 @default.
- W2915440475 cites W2099285964 @default.
- W2915440475 cites W2099347520 @default.
- W2915440475 cites W2101691304 @default.
- W2915440475 cites W2102292503 @default.
- W2915440475 cites W2102855159 @default.
- W2915440475 cites W2106313592 @default.
- W2915440475 cites W2108033217 @default.
- W2915440475 cites W2109092200 @default.
- W2915440475 cites W2122803326 @default.
- W2915440475 cites W2124372616 @default.
- W2915440475 cites W2124507453 @default.
- W2915440475 cites W2127031871 @default.
- W2915440475 cites W2127044907 @default.
- W2915440475 cites W2128361235 @default.
- W2915440475 cites W2128534721 @default.
- W2915440475 cites W2129312007 @default.
- W2915440475 cites W2129660904 @default.
- W2915440475 cites W2138669315 @default.
- W2915440475 cites W2140319746 @default.
- W2915440475 cites W2142912764 @default.
- W2915440475 cites W2143252260 @default.
- W2915440475 cites W2146953701 @default.
- W2915440475 cites W2147152564 @default.
- W2915440475 cites W2153284305 @default.
- W2915440475 cites W2159521809 @default.
- W2915440475 cites W2163038067 @default.
- W2915440475 cites W2163827613 @default.
- W2915440475 cites W2171488652 @default.
- W2915440475 cites W2275470757 @default.
- W2915440475 cites W2303248233 @default.
- W2915440475 cites W2314160598 @default.
- W2915440475 cites W2328277509 @default.
- W2915440475 cites W2329218082 @default.
- W2915440475 cites W2332606067 @default.
- W2915440475 cites W2338052861 @default.
- W2915440475 cites W2346298359 @default.
- W2915440475 cites W2443108434 @default.
- W2915440475 cites W2514904785 @default.
- W2915440475 cites W2605387680 @default.
- W2915440475 cites W2726970485 @default.
- W2915440475 cites W2728330247 @default.
- W2915440475 cites W2740623936 @default.
- W2915440475 cites W2782759891 @default.
- W2915440475 cites W2911926327 @default.
- W2915440475 cites W2946605950 @default.
- W2915440475 cites W2349032149 @default.
- W2915440475 doi "https://doi.org/10.1016/j.marpetgeo.2019.01.039" @default.