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Journal Article
Published: 01 February 2012
Vadose Zone Journal (2012) 11 (1): vzj2011.0088.
... size distribution of the soil matrix. Results indicated a multimodal character of preferential flow in this soil. In the case of the Haplic Cambisol, the dye pattern studied at the microscale was mostly affected by fractures and the size and shape of mineral grains. Various dye tracers are frequently...
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Journal Article
Published: 01 November 2011
Vadose Zone Journal (2011) 10 (4): 1261–1275.
... curve (BTC) shape using a data set of 115 tracer BTCs sampled from the literature. We tested the shape measures for sensitivity to deconvolution approaches based on Gaussian, lognormal, and gamma probability density functions and the mobile–immobile model. Furthermore, we evaluated collinearities among...
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Journal Article
Published: 01 November 2005
Vadose Zone Journal (2005) 4 (4): 1183–1190.
... Cross-sectional
 area Ratio of area to
 20-cm cylinder Shape n Mean final
 infiltration SD Lower
 10% CL Upper
 10% CL Mean final
 infiltration SD mm h −1 cm 2 20 cm  306 1 56  50  63 44  87 3.16 1.36 30 cm  705 2.3 56  81 102...
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Journal Article
Published: 01 June 1984
Journal of Sedimentary Research (1984) 54 (2): 603–614.
... grain shape, this, of course, deviates considerably from their actual dimensions. The present study reexamines sieving, and reconfirms that this approach sorts the grains by shape as well as by size. The grain's intermediate axial diameter is the main controlling factor in its passage through sieve...
Journal Article
Published: 01 June 1980
Journal of Sedimentary Research (1980) 50 (2): 475–483.
...R. Ehrlich; P. J. Brown; J. M. Yarus; R. S. Przygocki Abstract Measurement of thousands of quartz particle shapes from a variety of modern and ancient settings has led to the following conclusions concerning the origin and nature of shape frequency distributions: 1) Quartz shape frequency...
Journal Article
Published: 01 December 1979
Journal of Sedimentary Research (1979) 49 (4): 1093–1100.
... analytical expressions and combined with an empirical relation between wave energy, grain size and beach slope to construct synthetic beach forms. The plan shapes predicted by theory are closely fitted by the logarithmic spiral and compare well with natural beaches. The model shows the interplay...
Journal Article
Journal: Paleobiology
Published: 01 July 1979
Paleobiology (1979) 5 (3): 296–317.
Journal Article
Published: 01 February 1979
Canadian Journal of Earth Sciences (1979) 16 (2): 290–304.
...Mel R. Stauffer; A. I. Burnett Abstract The shape of the strain ellipsoid for an aggregate of clasts with initially isotropic fabric can be estimated from measurements made while viewing the clasts along the plunges of at least two of the axes of strain, even though the outcrop faces...
Journal Article
Journal: Geophysics
Published: 01 October 1978
Geophysics (1978) 43 (6): 1250–1268.
... grains varied widely in both size and shape. All samples obeyed Archie's law, FF = n (super -m) (where FF is the formation factor and n is the porosity) including mixtures of two differently shaped particle types.The exponent m was dependent on the shape of the particles, increasing as they became less...
Journal Article
Journal: Palynology
Published: 01 October 1978
Palynology (1978) 2 (1): 93–112.
Journal Article
Published: 01 September 1978
Journal of Sedimentary Research (1978) 48 (3): 743–749.
... conditions is highly unusual. Individual heads of mushroom-shaped colonies coalesce to differing degrees, probably in response to local variations in wave energies. Individual heads are circular to oval in plan that average 0.9 m in diameter, but may be as large as 2.0 m in diameter. Three growth modes...
Journal Article
Published: 01 July 1978
Canadian Journal of Earth Sciences (1978) 15 (7): 1053–1068.
... from hydrostatic or artesian pressures on a slope, from excess pore-water pressures due to rain or thawing ice lenses, or from loading by animals or man.The shapes of mudboils are controlled principally by slope, the steeper the slope, the more elongate the boil; the nature of their borders depends...
Journal Article
Published: 01 July 1978
Journal of Paleontology (1978) 52 (4): 904–915.
Journal Article
Published: 01 June 1978
Journal of Sedimentary Research (1978) 48 (2): 611–624.
Journal Article
Published: 01 March 1978
Journal of Sedimentary Research (1978) 48 (1): 269–280.
... that is mixed owing to contributions from both ancestral deltas. Analysis of variance, correlation, and regression methods indicate that heavy-mineral variations in each sedimentary province have been significantly influenced by hydraulic fractionation by size, shape, and density, and by a selective chemical...
Journal Article
Published: 01 March 1978
Journal of Sedimentary Research (1978) 48 (1): 7–24.
...R. J. Vinopal; A. H. Coogan Abstract An average grain volume for carbonate sands composed of various shaped particles has remained undetermined owing to the unpredictable effect of different fossil particle shapes on grain volume distribution. In this study, grain volume was measured for 250 single...
Journal Article
Journal: GSA Bulletin
Published: 01 March 1978
GSA Bulletin (1978) 89 (3): 369–384.
Journal Article
Published: 01 January 1978
Journal of the Geological Society (1978) 135 (1): 137–151.
...L. M. J. U. Van Straaten Abstract Two categories of dendrites exist: those in which the shape is mainly determined by crystal structure, and those where this is not the case, the material being amorphous or ultra-finely crystalline. Only dendrites of the second category are dealt with in this paper...
Journal Article
Journal: AAPG Bulletin
Published: 01 January 1978
AAPG Bulletin (1978) 62 (1): 73–86.
... pattern of reeflike Winnipegosis carbonate mounds. Although the carbonate mounds have been known for many years as a result of widely spaced drill holes, little was known of their size, shape, or distribution. The mounds are much smaller, more irregular, and more numerous than indicated in some earlier...
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Journal Article
Journal: GSA Bulletin
Published: 01 November 1977
GSA Bulletin (1977) 88 (11): 1689–1693.