...Roberto Tinterri Abstract The studies carried out on tectonically confined turbidite systems in Mediterranean-type foreland basins have shown that these deposits can be dominated by supercritical flows and by their transformation into subcritical and/or transitional (mud–sand) flows...

... ( a ), 1–2 m ( b ), > 2 m ( c ). 8 – Structure contours along the bottom of the sedimentary cover, km. 9 – Paleovalleys of rivers. 10 – Seismic profile 90800. b : 1 – Conglomerates; 2 – sands, 3 – aleurite, loam; 4 – siltstone; 5 – clay; 6 – mudstone; 7 – coal; 8 – limestone; 9...

... to a broader range of grain sizes, shapes, and solid densities of skeletal grains. These variations also underlie hydrodynamic differences between carbonate and siliciclastic turbidity currents. The experiments used coarse, noncohesive skeletal tropical carbonate sand obtained from the back-reef of Moorea...

...Jiaxin Yu; Per Avseth; Kenneth Duffaut ABSTRACT In seismic rock physics, models typically assume rocks are normally consolidated, often neglecting the effects of overconsolidation. Recent studies reveal that overconsolidated sands, resulting from stress release, show different physical property...

... % % Sand Silt Clay Red soil 1.38 5.49 0.97 4.86 7.28 37.91 65.91 24.82 63.79 11.39 Silt loam Sandy soil 1.26 3.78 0.75 5.35 1.85 29.78 48.23 50.53 44.34 5.33 Sandy loam Detritus 1.22 3.66 0.75 5.30 1.02 25.17 44.17 57.91 37.15 4.94 Sandy loam Note: BD...

... during the mining process. A plane-strain model was constructed for this experiment based on coal seam conditions. The geometric similarity ratio of the model was 1:120, from which the other similarity constants were derived. The similar materials selected for the model were sand and coal ash...

... included 4C, 4D, 6C, 6D, 8C, 8D, 10C, 10D, 12C, 12D, 19, 20, 21, and 22. Across the site, the surface material (0–0.6 m) is dark organic-rich topsoil, which is underlain by a clay loam (0.6–1.5 m). Between 1.5 and 2 m, the clay loam coarsens with an increasing sand and gravel percentage. The coarse...

... by an accumulation of sand, gravel, shells, and small amounts of organic material due to the action of waves, tides, and winds. This definition has the advantage that it includes strandplains and therefore, when applied to ancient deposits, does not require evidence of backbarrier lagoons or marshes, which may...

...Zhongmei Wang; Honglin He; Feng Shi; Qitian Zhuang This study provides a comprehensive analysis combining multi-element (Sr, Y, Th, U and REE) geochemistry and U–Pb geochronology of single-grain apatite with zircon U–Pb ages from channel sand deposits of the palaeo Fen River, collected...

... of synthetic mortar specimens Parameter Specification Weight ratio of cement, sand and water 1:2:0.5 Grade of cement Grade 32.5 Density (kg m −3 ) 1800 Uniaxial compressive strength (MPa) 20.3 C (MPa)* 0 φ (°)* 37.1 Note: *indicates equivalent strength...

...Chuanqin Yao; Huaqiao Zhong; Zhehao Zhu Abstract This article highlights the development of a large shaking table test for sand liquefaction analysis. Two soil containers of different sizes were fabricated. The first one was small (0.87 m × 0.87 m × 1.20 m) in which the reconstitution...

... of quartzites in Tertiary sand formations in the Paris Basin to demonstrate how cold climates could have influenced hydrologic regimes and promoted silicification. The coeval precipitation of calcite and silica in gypseous formations at the edges of plateaux-bordering valleys, along with the dissolution...

...K.A. Eriksson; W.S. McClung Abstract Holocene quartz-rich sands such as in the Orinoco River of Venezuela and Columbia, develop under a unique set of conditions including tectonic stability, intense weathering and long-term storage of sediment prior to burial. This review paper proposes...

... mat is overcome by currents or waves of high strengths, cm-size mat fragments (mat chips and roll-ups) are ripped off and redeposited. Intrasedimenary gases, trapped beneath mat layers, may cause a high secondary porosity (sponge pore sand) in the sandy substrates. The internal build-up (microfabrics...

.... 2a ). It consists of medium to coarse grained sandstones, mudstone, shale and gritty sandstone. The bottom sequence is characterized by gritty bed and many sand lenses and pinch out of sandstone beds are well observed ( Fig. 2b ). Sandstones are friable and medium to coarse grained ( Fig. 2c...

.... In this study, thermal conductivity, λ , volumetric heat capacity, C , and thermal diffusivity, α , of two soils from Chile, namely Bío Bío sand and Maicillo residual soil, were analysed. Bío Bío sand is a uniform and clean sand that mainly consists of basaltic particles, whereas Maicillo soil is a silty...

...Aditi Gogoi; Pradip Borgohain Abstract Sand production is a crucial concern of the Lakwa oilfield of the Upper Assam (India) basin as it develops numerous issues related to oil and gas production. Sand production from oil wells has a negative impact on the economy of oil production since it can...

...Rasikh Barkat; Partha Pratim Chakraborty Abstract Process-based facies and facies association analysis from the Neoproterozoic Owk Shale Formation, Kurnool Group allowed identification of seven facies types, grouped under four facies associations viz. (i) Greenish grey shale without sand interbed...

...Nidhi Murali; Jing Li; Anvi Agarwal; Patrick Berthault; Pijush Ghosh Abstract The interface performance between clay–sand mixtures and concrete structures is governed by the mixture's composition and its physical properties. Moisture content and particle-size distribution play important roles...

... provenance and global dust. The succession is capped by a cumulic gleysol that was truncated by recent plowing. Proximal loess deposits in lakes Smith and Ben are composed primarily of very fine sand, coarse silt, and medium silt (125–16 µm) compared to the distal facies (fine silt and finer sediment: <16...