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Journal Article
Journal: PALAIOS
Published: 01 December 2002
PALAIOS (2002) 17 (6): 556-570.
... is nonexistent in Archimedes , but does occur in Helicopora ulrichi . The convergently evolved similarity in form, an ecomorphologic phenomenon, between A. laxus and H. ulrichi suggests that the ecology of the two species may have been similar as well. Chapman's (1999) suggestion that theoretical...
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Journal Article
Journal: Paleobiology
Published: 01 January 2000
Paleobiology (2000) 26 (4): 556-577.
... in the morphospace (see Appendix 1 ). Almost two decades ago, McKinney and Raup (1982) created a theoretical morphospace of erect helical colony form in the Bryozoa, a morphospace capable of demonstrating the spectrum of both existent and nonexistent colony morphologies. Although created, that morphospace...
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Journal Article
Published: 01 November 2007
Vadose Zone Journal (2007) 6 (4): 725-734.
...Elena Moreno-Barbero; Yongcheol Kim; Satawat Saenton; Tissa H. Illangasekare Abstract Partitioning interwell tracer tests (PITTs) have been proposed as a tool to characterize source zones of waste sites with chemicals entrapped in the form of nonaqueous-phase liquids (NAPLs). This technique has...
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Journal Article
Published: 01 May 2010
Vadose Zone Journal (2010) 9 (2): 307-316.
... precisely the process that leads to water loss from the macropore walls. It may be a combination of drainage (right after a rainfall event), evaporation, and redistribution of water from the macropore walls toward the inner matrix. As water is removed, menisci form at the opening of each pore...
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Journal Article
Published: 01 August 2007
Vadose Zone Journal (2007) 6 (3): 581-590.
..., and Atlantic oceans. Many, formed as sand cays, coral atolls, or elevated limestone islands, are very small islands, with land areas less than 100 km 2 or with maximum widths less than 3 km. In these islands, surface water resources are usually nonexistent because of the large hydraulic conductivities...
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Journal Article
Published: 01 August 2011
Vadose Zone Journal (2011) 10 (3): 928-942.
... dissolves, but most importantly, chlorite and illite dissolve to form sequentially vermiculite and hydroxy-interlayered vermiculite, and, eventually, kaolinite ( Jin et al., 2010 ). The clay transformation is accompanied by significant losses of major elements (K, Fe, Mg, Al, and Si), as both solutes...
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Journal Article
Published: 01 August 2010
Vadose Zone Journal (2010) 9 (3): 517-527.
... coarse fraction (>2 mm) and classify as gravelly sand, loamy sand, and sandy loam. The soils vary in thickness from a few centimeters to about 1 m and are formed from weathering of the underlying granitic intrusion, called the Idaho Batholith. A network of fractures in the bedrock enables deep...
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Journal Article
Published: 01 February 2010
Vadose Zone Journal (2010) 9 (1): 61-72.
...; and January–March and August–December 2003). Flow and water quality data were not collected in these months because tile flows were generally low to nonexistent as a result of either frozen soils or limited rainfall. As a result, measures of model performance are a comparison of the months in which observed...
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Journal Article
Published: 01 November 2007
Vadose Zone Journal (2007) 6 (4): 890-898.
...} \pagestyle{empty} \begin{document} \[\frac{\mathrm{d}}{\mathrm{d}z}\left[{-}K\frac{\mathrm{d}h}{\mathrm{d}z}{+}K\right]{+}r_{\mathrm{w}}(z){=}0d\] \end{document} where h is the pressure head (L) and K is the hydraulic conductivity (L T −1 ). The hydraulic conductivity is assumed to be of the form...
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Journal Article
Journal: Paleobiology
Published: 01 March 2006
Paleobiology (2006) 32 (2): 316-337.
... and/or the limitations of architectural constraints rather than portions of gastropod phylogeny. We can use the phylogenetic relationships inferred from the specific shell characters as models to estimate both the frequencies of changes in gross shell form and the expected effects of phylogenetic autocorrelation (see...
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Journal Article
Published: 01 November 2009
Vadose Zone Journal (2009) 8 (4): 926-941.
... of a capacitor having two cylindrical electrodes that share the same axis but are separated by a short axial distance. As described by Dean et al. (1987) , the two electrodes, and associated electronic oscillator and support structure, form a sensor that may be moved up and down within an access tube placed...
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Journal Article
Published: 01 August 2007
Vadose Zone Journal (2007) 6 (3): 496-510.
... production, most for many years, before irrigation. Nitrogen fertilizer applications had been minor or nonexistent before irrigation, but increased dramatically with its advent. All of the irrigated sites have experienced significant declines in water table elevation since the advent of irrigation, as listed...
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Journal Article
Journal: Clay Minerals
Published: 01 June 2002
Clay Minerals (2002) 37 (2): 389-393.
..., ‘crystalline’ and ‘amorphous’ are complex concepts. Many forms of order and disorder occur in phyllosilicates, including order-disorder in stacking sequences, isomorphous substitutional order-disorder where various ions or vacancies occur in certain coordination sites, and order-disorder in the arrangement...
Journal Article
Published: 01 March 1988
Journal of Sedimentary Research (1988) 58 (2): 291-303.
... as a hypobasal layer. The hypobasal layer develops outside the tissue as an encrustation of small aragonite botryoids attached to the lower surface between rhyzoids, and on living plants it may exceed the thickness of the thallus. Calcification ranges from nonexistent in some cold-water forms, to thallus...
Journal Article
Published: 01 March 1987
Canadian Journal of Earth Sciences (1987) 24 (3): 565-571.
... the orientation distribution function display spurious symmetry indicating nonexistent differences in equivalent specimen directions and in the orientation patterns of positive and negative crystallographic forms. It is demonstrated that the analysis and comparison of pole figures require that the number of faces...
Series: SEPM Special Publication
Published: 01 January 1987
DOI: 10.2110/pec.87.41.0241
EISBN: 9781565760950
... short interruptions in sedimentation. Most diastems in shallow marine and coastal settings are associated with transgressions and may be loosely grouped as “transgressive surfaces.” Diastems include the ravinement diastem, which is formed by transgressive shoreface retreat, channel-base diastems...
... or nonexistent. Tying shelf sequences to basin sequences is often impossible because of long distances, gaps in seismic data and complex structures. The concept of aggradation cycles within sequence architectures offers new criteria for exploration and new ways to interpret the seismic data on 2D and 3D datasets...
FIGURES
Series: GSA Memoirs
Published: 01 January 1983
DOI: 10.1130/MEM161-p133
... granite magmatism occurred form 1.34 to 1.41 and from 1.03 to 1.08 b.y. ago in lesser proportions. Although anorthositic and mangeritic rocks are abundant in some provinces (e.g., Labrador), rapakivi granite (in the broad usage of the term) represents by far the most abundant magma-type generated during...
Series: AAPG Memoir
Published: 01 January 1964
DOI: 10.1306/M3359C3
EISBN: 9781629812342
... on the mainland. Two types of elevations occur in the Gulf, (1) those forming islands and banks along the western margin and consisting largely of “granite,” and (2) central highs, most of which do not reach the surface and contain basic volcanics. The continental shelves are very narrow or nonexistent...
Journal Article
Journal: GSA Bulletin
Published: 23 June 2017
GSA Bulletin (2017) 129 (9-10): 1280-1299.
... new carbon and oxygen isotope measurements of Cryogenian and Ediacaran carbonate in the northern Amadeus Basin that, in combination with previous data from Tonian strata of the Bitter Springs Formation, form a composite Amadeus Basin Neoproterozoic δ 13 C carb record. Key features of the Cryogenian...
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