Particle quantification from image analysis: application to a quartz-rich sand injection sample at the basal shear zone of the Esla Nappe (Cantabrian Zone, Variscan orogen)
DOI:
https://doi.org/10.55407/geogaceta102345Keywords:
image optical analysis, fault rock, shape parametersAbstract
Image analysis of rock samples in thin sections or polished surfaces allows for the characterization of sizes and shapes of the particles that make up a rock. To assess the efficacy of various parameters in distinguishing grains and particles of different origins and evolutions within the same rock, we utilized a sample from a quartz grain-rich injection at the base of the Esla Nappe (Cantabrian Zone, Variscan Orogen). We characterized the particles using parameters such as area (A), perimeter (P), sphericity (Es), solidity (So), normalized perimeter-area (PAn), and fractal dimension (DF). This analysis enables differentiation between rounded sand grains of detrital sedimentary origin and grains that have undergone partial or complete fracturing. However, the analysis could not adequately distinguish grains that were partially exposed to the corrosive action of fluids during injection, perhaps due to potential post-injection cementation.
References
Alonso, J.L., Marcos, A. y Suárez, A. (2009). Geologica Acta 7, 451-473.
Arboleya, M.L., Julivert, M., Zamarreño, I. (1999). Trabajos de Geología, 21, 47-61.
Asmussen, P., Conrad, O., Günter, A., Kirsch, M. y Riller, U. (2015). Computers and Geosciences 83, 89-99. https://doi.org/10.1016/j.cageo.2015.05.001
Berrezueta, E., Cuervas-Mons, J., Rodríguez-Rey, A. y Ordóñez-Casado, B. (2019). Minerals 9(12), Art. 768. https://doi.org/10.3390/min9120768
Catalina, J.C. y Castroviejo, R. (2017). Revista de Metalurgia 53(4), 20 p. https://doi.org/10.3989/revmetalm.107
de Paz-Álvarez, M.I., Llana-Fúnez, S., Alonso, J.L. (2021) Journal of Structural Geology 142, Art. 104230. https://doi.org/10.1016/j.jsg.2020.104230
Ehrlich, R., Crabtree, S.J., Kennedy, S.K. y Cannon, R.L. (1984). Journal Sedimentary Petrology 54, 1365-1378.
Fernández, F.J., Menéndez-Duarte, R., Aller, J. y Bastida, F. (2005). Geological Society London Special Publications 245(1), 409-420. https://doi.org/10.1144/GSL.SP.2005.245.01.20
López-Sánchez, M.A. (2020). Journal of Structural Geology 135, Art. 104042. https://doi.org/10.1016/j.jsg.2020.104042
Martínez-Martínez, J., Benavente, D. y García del Cura, M.A. (2007). Engineering Geology 90, 41-54. https://doi.org/10.1016/j.enggeo.2006.12.002
Pirard, E., Lebrun, V. y Nivart, J.F. (1999). European Microscopy and Analysis 60, 9-11.
Roussillon, T., Piégay, H., Sivignon, I., Tougne, L. y Lavigne, F. (2009). Computers and Geosciences 35, 1992-2000. https://doi.org/10.1016/j.cageo.2009.01.013
Sukumaran, B. y Ashmawy, A.K. (2001). Geotechnique 51, 619-627. https://doi.org/10.1680/geot.2001.51.7.619
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