Evaluation of Settlements in Sands Due to Earthquake Shaking
It is suggested that the primary factors controlling induced settlement are the cyclic stress ratio and maximum shear strain induced in saturated sands by the earthquake shaking and the cyclic strains induced in dry or partially saturated sands, together with the SPT N‐value of the sand and the magnitude of the earthquake.
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Sand and Gravel in the U.S.
Value of sand and gravel resources produced in each state. California and Texas produced the most valuable sand and gravel, exceeding production in the other states by >300 million dollars in 2018. From the USGS …
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Evaluation of the Cyclic Resistance of an Uncemented Calcareous Sand
6 th I nternational Conference on Earthquake Geotechnical Engineering 1-4 November 2015 Christchurch, New Zealand Evaluation of the Cyclic Resistance of an Uncemented Calcareous Sand Deposit from Puerto Rico Using Shear Wave Velocity A. C. Morales-Velez 1, C. D. P. Baxter 2 and M. A. Pando3 ABSTRACT This paper presents the results of a ...
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Geomorphic, Seismic, and Geotechnical Evaluation of …
Evaluation of Sand and Gravel Deposits in the Sheridan, Wyoming, Area By Jack K. Odum and Carter H. Miller Abstract Exploration and production of coal and other resources in the Powder River Basin, Wyoming and Montana, have resulted in …
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Simplified Estimation of Earthquake-Induced
ABSTRACT This study presents a simplified method for estimating earthquake-induced settlements of saturated sand deposits based on previously available studies and undrained cyclic loading tests followed by drained reconsolidation under non-zero or zero lateral strains for various sands. It has been shown that: (1) the volume change of different sands over …
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Mineral Appraisals: What is the Value of a Quarry or Mine?
This paper looks at low-value, high-volume mineral commodities, mainly crushed stone and sand and gravel (aggregate), generally sold by the ton, fob quarry. Dimension or cut stone is generally
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Use of the Income Approach in Valuing a Sand and …
This article finds that valuing sand and gravel property using the income approach is the most appropriate method of valuation, and that valuation experts should use the same valuation …
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GEOLOGICAL STUDY OF SAND DEPOSITS IN
MI DEQ GSD Geologic Study of Sand Deposits in the State of Michigan OFR 78 03.PDF page 3 of 21 areas were recommended for more detailed sampling to be done in Phase II. Purpose and Scope of Phase II The general purpose of Phase II, as stated in the contract, is to assess the suitability of four selected sand deposits
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Valuation of Aggregate Operations for Banking …
Valuation of Aggregate Operations for Banking Purposes (Sand and Gravel and Crushed Stone) Aggregate consists of sand and gravel and crushed stone. The principal consumers ... Cancellations raise the value of deposits that can be, or are, developed. In short, mine and site value is determined by:! Quantity of accessible material that meet ...
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Sand and Gravel in the U.S.
Sand and gravel resources can be mined from a variety of depositional settings such as floodplains, alluvial fans, shorelines, and sand dunes, although river channels and glacial deposits are the most important …
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PLACER DEPOSITS Sub-committee Members
minerals of mineral sands deposits are one of the main sources of titanium feedstock used by white pigment producers for paints, paper and plastics. The titanium producers define ... During the evaluation phase, a geological model should be developed identifying boundaries of mineralization and features such as overburden, water table, clay ...
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Mesoscopic mechanism of increasing liquefaction resistance …
For example, aftershocks caused recurrent liquefaction of sand deposits, and brought about more severe damages during the 1983 Nihonkai-Chuba earthquake [7], the 2010 Tohoku-Oki earthquake [8], and the 2010–2011 Canterbury earthquakes [9], despite of the overall densification of the sand deposits by mainshocks.
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Evaluating Rare Earth Element Deposits
Rare Earth Element Deposits – aspects of their evaluation, diversity, geochemistry and genesis Phillip L. Hellman There has been a significant growth in exploration activity for rare earth ...
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SAND AND GRAVEL (CONSTRUCTION)1
Events, Trends, and Issues: U.S. construction sand and gravel production was about 920 million tons in 2023, a decrease of 4% compared with that in 2022. Apparent consumption also …
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Valuation of Aggregate Operations for Banking Purposes …
A mineral deposit has virtually no value if it cannot be economically (profitably) developed. The only appropriate analysis available to estimate a deposit's (mineral properties) value is to figure out if the deposit can be economically exploited. Generally, this requires analysis of:! Potential …
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EVALUATION OF SILICA SAND DEPOSITS FROM WESTREN …
3. RESULTS AND DISCUSSION: Frac sand must be >99% (SiO2 ), therefore two sand deposits (Arduma and Kilo 180 sands) have been selected for this work due to their high silica content as shown in table (1) other required properties were tested and the results are presented and discussed here below. 1.
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SAND AND GRAVEL (CONSTRUCTION)1
SAND AND GRAVEL (CONSTRUCTION)1 (Data in million metric tons unless otherwise noted) Domestic Production and Use: In 2021, 1.0 billion tons of construction sand and gravel valued …
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Empirical Correlation of Soil Liquefaction Based on SPT N …
A critical review of field performance of sandy soil deposits during past earthquakes is conducted with special emphasis being placed on Standard Penetration Test N-values and fines content.The field relationship between adjusted dynamic shear stress ratio and normalized SPT N-values together with laboratory tests on undisturbed sands indicate that (1) sands …
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Resource Evaluation of Selected Tar-Sand Deposits in …
The cooperative program between the Oklahoma Geological Survey and the U. S. Department of Energy has permitted evaluation of specific tar-sand deposits in Carter and Murray counties, Oklahoma. The Sulphur deposit was evaluated by a combination of industry and DOE-OGS boreholes. Bitumen content of the cores varied from 0 to 13 wt %, and ...
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How much are your reserves worth?
A best case scenario involves preparing an estimate of the potential reserves using the most optimistic values for deposit thickness, quality, extent, overburden and so forth. If the …
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Evaluation of Liquefaction Resistance of Sand Improved by …
It is concluded, therefore, that the liquefaction resistance of compacted sands can be evaluated on the basis of N 1 using the relationship established for natural sand deposits.Key words consolidated undrained shear earthquake liquefaction penetration test sampling sand sand compaction pile shear strength (IGC : D7/C6/K5) REFERENCES 1) JSSMFE ...
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Evaluation of Liquefaction Potential Using Field Performance …
The evolution of a simplified procedure for evaluating the liquefaction potential of sand deposits using data obtained from standard penetration tests is reviewed. Field data for sites which are known to have liquefied or not liquefied during earthquakes in the United States, Japan, China, Guatemala, Argentina, and other countries are presented to establish a criterion for evaluating …
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Evaluation of Characteristics of Re-liquefaction Resistance in
대기의 혼염이 Many case histories of re-liquefaction phenomena seem to support the idea that sand deposits, if they once have been liquefied, could be reliquefied again by a subsequent earthquake even though the earthquake is smaller than the previous one. ... Evaluation of Characteristics of Re-liquefaction Resistance in Saturated Sand ...
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Evaluation of secondary diamond (and gemstone) …
Evaluation of secondary diamond (and gemstone) deposits according to the SAMREC Code T.R. Marshall1 Synopsis Alluvial diamond and other gemstone deposits have, typically, been exploited by small artisanal operations with little or no geological control. Over the last decade, however, alluvial deposits have
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Evaluation of Natural Radioactivity in Marine Sand Deposits …
Abstract. Natural radioactivity is very important for the assessment of the marine sand property and usability. By using gamma spectrometry, the concentration of the natural radionuclides 226 Ra, 232 Th and 40 K have been measured in marine sand deposits from Liaodong Bay (LDB), North Yellow Sea (NYS), Zhoushan area (ZS), Taiwan Shoal (TS) and Pearl River Mouth (PR), …
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Resource Estimation and Valuation of Alluvial Diamond Deposits
The valuation of diamondiferous deposits depends on: the density distribution; the size distribution of stones; and the selling price structure prevailing at a particular time.
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Evaluation of white sand deposits in southern Sinai area
The white sand deposits belong to the Naqus Formation of Early Paleozoic age. Hassan,1967, Said,1971, Omara, 1972, and Issawi&Jux, 1982 classified the Early Paleozoic section in Abu Durba of Sinai from base to top into Araba Formation and Naqus Formation (Early Paleozoic age), unconformaby overlain by
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Evaluation of liquefaction potentials based on shear wave …
This study evaluates the potentials of liquefaction caused by the 2017 moment magnitude 5.4 earthquake in Pohang City, South Korea. We obtain shear wave velocity profiles measured by suspension PS logging tests at the five sites near the epicenter. We also perform downhole tests at three of the five sites. Among the five sites, the surface manifestations (i.e., …
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Evaluation of Sand Deposits within Nchitaki Umuituru …
Sand deposits occur in strata. A repetitive of sand and clay bed can be noticed within the first 66m of VES 1. Similar situation occurs at VES 2.The thickness of the sand bed increases at deeper horizons and probably the quantity of sands. Hence the site is viable for mining of sand in commercial quantities and best at VES 2 location.
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THE PROSPECTING AND EVALUATION OF ALLUVIAL …
complete an understanding of the geology of the expected deposit as possible. Without understanding what kind of deposit one is looking for, it is very easy to either use the wrong prospecting techniques to try and locate it, or even to use the right technique and still miss the deposit. Factors to be considered are: The depositional environment 1.
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