Saprolites

In–situ quantification of mechanical and permeability properties on outcrop analogues of offshore fractured and weathered crystalline basement: Examples from the Rolvsnes granodiorite, Bømlo, Norway

“…In their model, progressive downward penetration of meteoric fluids from the top-basement surface led to the development of a thick weathering profile containing both saprock and more mature saprolite formed at the expense of the host granitoid (Fig. 2a-b) (Riber et al, 2015(Riber et al, , 2019bWalter et al, 2018;Zauyah et al, 2018). Weathering extends from the top-basement surface (that was exposed to a subaerial tropical-humid climate) into depth in the rock column: the progressive degradation of the host rock primary structure and the presence of a pervasive network of fractures and fault zones promoted the penetration at depth of fluids enhancing alteration (Braathen et al, 2018;Walter et al, 2018;Zauyah et al, 2018).…”

“…2a-b) (Riber et al, 2015(Riber et al, , 2019bWalter et al, 2018;Zauyah et al, 2018). Weathering extends from the top-basement surface (that was exposed to a subaerial tropical-humid climate) into depth in the rock column: the progressive degradation of the host rock primary structure and the presence of a pervasive network of fractures and fault zones promoted the penetration at depth of fluids enhancing alteration (Braathen et al, 2018;Walter et al, 2018;Zauyah et al, 2018). The weathering process induces specific textural and mineralogical modification of the host rock.…”

Loess and early land use: Geoarchaeological investigation at the early Neolithic site of Guobei, Southern Chinese Loess Plateau

“…A common trend is that the loess layers contain 231 slightly more very fine sand than the palaeosols. Besides the frequent changes in 232 direction and strength of the winds that were responsible for the deposition of 233 coarse wind--blown materials (Sun et al, 2000;Sun et al, 2002;Xin, 2005;Zhang 234 et al, 2005), this might also be related to ongoing soil formation and mineral 235 weathering processes (Stoops and Schaefer, 2010;Zauyah et al, 2010) which 236 disintegrate coarse minerals (e.g. feldspar) into finer particles.…”

Weathering and incipient pedogenesis of Technosols constructed from dolomitic limestone mine spoils

“…Differently from true pedogenetic peds, the intrapedal planar voids in pseudo-aggregates and accommodated intra-aggregates indicate they were formed mainly due mechanical stress rather than chemical weathering (Zauyah et al, 2018). A higher degree of pedoplasmation was observed in SC6 pseudo-aggregates compared to SC2, evidenced by redder matrix color and moderate to strong grade of pedality (Fig.…”