Illitizing fluids as precursors of hydrocarbon migration along transfer and boundary faults of the Jeanne d’Arc Basin offshore Newfoundland, Canada

SEM and TEM evidence of mixed-layer illite-smectite formed by dissolutioncrystallization processes in continental Paleogene sequences in northwestern Argentina

“…The connection between areas showing advanced reaction progress in I-S evolution and the activity of fluids in faulted zones has been mentioned previously for different basins (Uysal et al, 2000;Abid & Hesse, 2007;Abad et al, 2010Abad et al, , 2012Middleton et al, 2015). In several cases, the authors could not conclude with certainty whether fluids were involved directly in smectite illitization or if they only acted as heat carriers (Uysal et al, 2000).…”

“…In several cases, the authors could not conclude with certainty whether fluids were involved directly in smectite illitization or if they only acted as heat carriers (Uysal et al, 2000). On the other hand, Abid & Hesse (2007) concluded that fluids channeled by faults were involved directly in diagenetic reactions yielding anomalous areas of enhanced illitization in the offshore Jeanne d'Arc Basin of Canada. Likewise, Middleton et al (2015) described several generations of illite (R ≥ 3) precipitation from Merrimelia-Innamincka Ridge (Warburton-Cooper basins, central Australia) sediments associated with the reactivation of fracture networks that would have acted as highly permeable conduits for hydrothermal fluid flow during the Carboniferous and Late Triassic tectonothermal events.…”

Lamina Variation and Its Relationship with Sedimentary Facies in Alkaline Lacustrine, Permian Fengcheng Formation, Junggar Basin, Northwest China

“…Diagenetic change tends to be consistent with the process of petroleum generation. Organic matter is immature when smectite is abundant, and mass hydrocarbon generation occurs during the conversion of smectite to illite. , Generally, as stratigraphic depth increases and diagenesis intensifies, smectite is transformed into illite by way of mixed illite/smectite. − This transformation consumes large amounts of H + and K + . Interlayer water is converted and precipitated during diagenesis providing H + for the transformation and creating favorable conditions for hydrocarbon generation from organic matter.…”

“…Organic matter is immature when smectite is abundant, and mass hydrocarbon generation occurs during the conversion of smectite to illite. 48 , 49 Generally, as stratigraphic depth increases and diagenesis intensifies, smectite is transformed into illite by way of mixed illite/smectite. 50 − 55 This transformation consumes large amounts of H + and K + .…”

Illite authigenesis in sandstones of the Guaritas Allogroup (Early Paleozoic): Implications for the depositional age, stratigraphy and evolution of the Camaquã Basin (Southern Brazil)

“…Integrating these tools with the geodynamics of sedimentary basins allows constraining the temperature, nature and origin of pore fluids involved in the cementation processes (Longstaffe, 1989;Lundegard, 1989). Additionally, the application of 40 K-40 Ar radiometric dating on authigenic illites permits constraining the age of illitization and hydrocarbon emplacement (Lee et al, 1985;McBride et al, 1987;Ehrenberg and Nadeau, 1989;Glasmann et al, 1989;Hamilton et al, 1989;Mizusaki et al, 1990;Clauer et al, 1992;Zwingmann et al, 1998), and diagenetic fluids percolation in sandstones (Burley and Flisch, 1989;Girard et al, 1989;Gaupp et al, 1990;Cathelineau et al, 2004;Sant'Anna et al, 2006;Abid and Hesse, 2007). Radiometric dating of illite and illite-smectite mixed-layer can also be applied to tectonic events, thermal history of sedimentary basins at a regional scale (Lee et al, 1989;Barnes et al, 1992;Mossmann et al, 1992;Robinson et al, 1993;Zhao et al, 1997;Zwingmann et al, 1999;Uysal et al, 2001a), impact structures (Uysal et al, 2001b), deformation and brittle fault histories (Zwingmann and Mancktelow, 2004;Zwingmann et al, 2006) and paleomagnetic studies .…”