Toward more accurate quartz cement models: The importance of euhedral versus noneuhedral growth rates

Computational modeling of calcite cementation in saline limestone aquifers: a phase-field study

“…This essentially implies that finer grains attain their euhedral form faster compared to the coarser ones. This has also been observed in experiments concerning quartz cementation (Lander et al 2008) and is explained by the authors as follows: "overgrowths that nucleate on larger sites must grow farther before they reach euhedral termination. " For larger grains, a higher number of surface layers have to be appended in order to attain the final equilibrium shape.…”

“…c Polar (spherical) surface energy (γ) plot corresponding to the equilibrium shape the original sediments. Moreover, the presence of secondary authigenic minerals as well as clay inhibits the cementation giving rise to nucleation discontinuities (Bloch et al 2002;Lander et al 2008;Stricker and Jones 2016). To account for such effects, advanced computational investigations can be conducted by incorporating suitable preprocessing techniques.…”

“…Hilgers et al (2001) employed the program for studying anisotropic grain growth under different boundary conditions. Lander et al (2008) separately developed a computational algorithm known as Prism2D based on continuous value cellular automata approach in order to simulate the dynamic overgrowths in quartz under complex boundary conditions and validated them with experiments. Their numerical results (using Prism2D) as well as observations from the grain growth experiments on quartz seeds of different sizes confirmed the so-called grain size effect-surface area normalized (SAN) growth rate is smaller in fine-grained sandstones than the coarser ones.…”

Predictability of properties of a fractured geothermal reservoir: the opportunities and limitations of an outcrop analogue study

“…the area underwent a multiphase deformation history, and is characterized by sedimentary rocks that show strong facies changes at a small scale. Given, however, a less complex setting, knowledge of original rock composition, thermal history, and fracture timing should improve comparison and prediction of cementation (Lander et al 2008;Lander and Laubach 2015) and thus allow mechanical rock properties to be better determined.…”

The coupling of dynamics and permeability in the hydrocarbon accumulation period controls the oil-bearing potential of low permeability reservoirs: a case study of the low permeability turbidite reservoirs in the middle part of the third member of Shahejie Formation in Dongying Sag

“…Two phases of quartz overgrowths can be identified by cathodoluminescence microscopy. The first phase of quartz overgrowth is dark black and the second phase is brown as also described by Lander et al (2008) and Tournier et al (2010). Kaolinite is the most important kind of clay mineral (Fig.…”