Blar i Department of Earth Science på forfatter "Ballas, Gregory"
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Contractional deformation of porous sandstone: Insights from the Aztec Sandstone, SE Nevada, USA
Fossen, Haakon; Zuluaga, Luisa F.; Ballas, Gregory; Soliva, Roger; Rotevatn, Atle (Peer reviewed; Journal article, 2015-05)Contractional deformation of highly porous sandstones is poorly explored, as compared to extensional deformation of such sedimentary rocks. In this work we explore the highly porous Aztec Sandstone in the footwall to the ... -
Grain Deformation Processes in Porous Quartz Sandstones – Insight from the Clusters of Cataclastic Deformation Bands
Philit, Sven; Soliva, Roger; Ballas, Gregory; Fossen, Haakon (Peer reviewed; Journal article, 2017)Porous sandstones represent classical reservoirs for water or hydrocarbons. Deformation in such granular material is due to tectonic events and occurs through the process of cataclasis, implying the crushing of the grains ...