sandstone impact

Experimental study of the dynamic characteristics of ...

2021-11-26 · Impact tolerance of sandstone under different creep conditions. The impact number can be selected as an index to reflect the impact tolerance of sandstone (Fu et al. 2008). To analyze the sensitivity of impact number to the preexisting creep damage, the relationship between the impact number and the creep stress and creep duration of sandstone ...

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Journal of Sedimentary Research | GeoScienceWorld

Journal of Sedimentary Research. 3300 Penrose Place. Boulder, CO 80301. [email protected] . Associate Editors List. Most Read. Most Cited. 107 Systematic organization of thin-bedded turbidites in ancient deep-marine levees: Possible evidence of rhythmic pulsing in turbidity currents. 94 Effects of sea level and upwelling on development of a ...

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Profile distribution of soil moisture response to ...

2020-6-4 · The Pisha sandstone area in China is located on the upper and middle reaches of the Yellow River, which is a region with some of the most severe soil erosion in both the Loess Plateau and in the ...

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2019-9-4 · ,,197910,,,、:2210096E-mail:fengqia

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Effects of Acid Sulfate and Chloride Ion on the Pore ...

2021-8-17 · When the impact velocity is 1.78 m/s, a post-peak rebound appears in the stress–strain curve of sandstone before and after acid corrosion, however, the rebound effect of acid-corroded sandstone is weaker than that of the original sandstone specimens; when the impact velocity is 4.38 m/s, that rebound for acid-corroded sandstone is further ...

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Compactional deformation bands in Wingate Sandstone ...

2007-4-15 · The large magnitudes of impact-induced P are expected to extend into the overlying strata that were present at the time of the impact event . The Jurassic-aged Wingate Sandstone predates proposed impact ages for Upheaval Dome and thus may contain additional evidence of this impact event.

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Analysis of Energy Dissipation Characteristics of Damaged ...

2021-7-22 · Analysis of Energy Dissipation Characteristics of Damaged Sandstone under Impact Shock and Vibration ( IF 1.543) Pub Date : 2021-07-22, DOI: 10.1155/2021/4200452 Feng Wang, Haibo Wang, Ying Xu, Bing Cheng, Qianqian Wang

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Experimental investigation on the erosion behaviors of ...

2022-1-1 · The erosion craters in untreated sandstone at all tested standoff distances and in frozen-thawed sandstone at s/d ≥ 6 are nearly conical, while at small standoff distances (s/d = 2 and 4), a regular deep hole is generated in the center of sandstone at N C = 15 under jet impact and large pieces of rock peeled off around the hole due to jet ...

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Geology | GeoScienceWorld

Geology has been the Web of Science''s #1 ranked "geology" journal for 12 years in a row. The journal Geology publishes timely, innovative, and provocative articles relevant to its international audience, representing research from all fields of the …

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Porosity and Bulk Density of Sedimentary Rocks

2012-7-25 · Sorby (1908) gave the porosity of sandstone, shale, and slate obtained by imbibition of water for several days under a partial vacuum re­ sulting from the condensation of steam. Sorby used almond oil or benzol to saturate specimens of clay. Hirschwald (1912) determined the porosity of many sandstone, limestone, and slate specimens of

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Lichen Impact on Sandstone Hardness is Species‐Specific ...

2021-12-22 · In this study, the impact of lichen colonization patterns on Cortemilia sandstone was examined beneath thalli of three lichen species. Rock hardness, a proxy for rock durability, was measured at different depths from the surface using an Equotip hardness tester and compared to that of freshly cut surfaces and exposed surfaces uncolonized by ...

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Mechanical behavior and permeability evolution of ...

2021-7-17 · Variation of permeability of sandstone specimens before and after impact with incident energy (a), confining pressure (b) and impact times (c) Full size image Figure 11 a shows that the sandstone permeability with σ 3 of 5 MPa increases by 2770.25% from 3.16 × 10 −18 to 9.07 × 10 −17 m 2 as the incident energy jumps from 0 to 283 J.

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Evaluation of the multi-doublet performance in sandstone ...

1. Introduction. Geothermal resource is a promising renewable and stable clean energy, which has become a significant energy source for heating/cooling of buildings and power generation (Huang, 2012; Lund and Toth, 2020).Hydrothermal resources, the most widely utilized type of geothermal resources, are abundant in sandstone reservoirs in many large sedimentary …

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2019-7-23 · 15,80,CE,,,,,,,,,,,,10.,, ...

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Shock-Metamorphic Effects in Rocks and Minerals

2000-4-19 · cal importance of meteorite impact events, and the large number of impact structures still preserved on Earth, is largely the result of two related discoveries: (1) The extreme physi-cal conditions that are imposed by intense shock waves on the rocks through which they pass produce unique, recog-nizable, and durable shock-metamorphic effects ...

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Numerical modeling and 3D-gravity inversion of the …

2021-6-3 · Numerical modeling and 3D-gravity inversion of the Vargeão impact structure formed in a mixed basalt/sandstone target, Paraná Basin, Brazil Journal of South American Earth Sciences ( IF 2.093) Pub Date : 2021-05-28, DOI: 10.1016/j.jsames.2021.103396

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Dynamic Variation of Water Saturation and Its Effect on ...

2021-3-2 · Dynamic variation of water saturation near a wellbore may cause serious aqueous phase trapping (APT) damage in gas well production, especially in partly water-saturated tight sandstone gas reservoirs. In this paper, a prognosis model was deduced ...

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Reservoir characterization of fluvio-deltaic sandstone ...

The distributions of these sandstone specifications are in turn subjected to the sedimentary basin conditions that prevail post deposition, as they directly impact the type and severity of the diagenetic overprints. Clay mineral formation, part of the diagenetic process, typically results in a deterioration of sandstone reservoir quality.

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(PDF) Fracture Morphology Analysis of Frozen Red …

T able 2: Grade of screening and fractal dimension for red sandstone under dynamic impact. Number d (mm) 0.075 0.15 0.3 0.6 1.18 2.36 4.75 9.5 13.2 16 19 26.5 31.5 37.5 53 D

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Damage Analysis of Chemically Corroded Sandstone …

2021-5-28 · To explore the influence of cyclic impact and axial pressure on the damage of chemically corroded sandstone, a series of cyclic impact tests were carried out on white sandstone by using Split Hopkinson Pressure Bar. The longitudinal sections and fractures of samples were observed with the scanning electron microscope.

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Stress–strain relationship of sandstone under confining ...

2021-4-27 · Abstract A series of triaxial repetitive impact tests were conducted on a 50-mm-diameter split Hopkinson pressure bar testing device to reveal the characteristics of dynamic stress–strain of sandstone under confining pressure, …

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The effect of chemical erosion on mechanical properties ...

2019-12-27 · Furthermore, We analyzed the macroscopic impact of corrosive effects of the chemical solutions on the shear-resistant properties of sandstone using statistical methods and use a scanning electron ...

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Sedimentary Rocks and the Rock Cycle

2020-8-26 · Sandstone Sandstone rocks are composed almost entirely of sand-sized quartz grains (0.063 –2 mm) cemented together through lithification. Sandstone rocks are generally classified as quartz sandstone, arkose (quartz with feldspars), or graywacke (quartz with feldspar, clay, and other coarse-grained mineral fragments).

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2019-12-19 · The impact of environmental temperature change on the interior temperature of quasi-sandstone in cold region: experiment and numerical simulation[J]. Engineering Geology, 2018, 239: 241-253. (SCI) [11] Shen Yanjun, Xu Guangli, Yi Jiangnan.

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Sandstones Classification

The hardness of this sandstone can be determined by breaking the core as well as by examining the broken core''s edges. The edge of this kind of sandstone core is relatively weak & crumbles with minor impact. Cores of other types of sandstone fracture with sharp edges and shatter into small as well as sharp fragments.

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Geology | GeoScienceWorld

Geology has been the Web of Science''s #1 ranked "geology" journal for 12 years in a row. The journal Geology publishes timely, innovative, and provocative articles relevant to its international audience, representing research from all fields of the geosciences. Full-text available for …

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Experimental investigation on the erosion behaviors of ...

2021-8-2 · Characterization of the microcracks distribution. As shown in Fig. 4, in the sandstone sample without repetitive impact, there are already some initial microcracks, which should be attributed to the action of fault or blasting activity (Liu et al. 2020; Souley et al. 2001).Both the number and length of the microcracks increase with increasing of the number of repetitive …

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Capillary heterogeneity trapping of CO2 in a sandstone ...

2011-8-13 · We report the results of CO 2 core flooding experiments at high pressure and temperature performed to investigate the impact of natural capillary heterogeneity in a sandstone rock on CO 2 saturation buildup and trapping. CO 2 and water were injected through a Mt. Simon sandstone core at 9 MPa pore pressure and 50°C. The core had two regions of ...

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