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Van Geel and Roy model

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Journal Article
Published: 01 February 2005
Vadose Zone Journal (2005) 4 (1): 163–174.
... and van der Zee (WVDZ) model; the Van Geel and Roy (VGR) model; and the Lenhard, Oostrom, and Dane (LOD) model—have been proposed for describing residual NAPL formation. The WVDZ model assumes a critical total liquid saturation below which all NAPL becomes residual. The VGR and LOD models are extensions...
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Journal Article
Journal: Palynology
Published: 01 January 2006
Palynology (2006) 30 (1): 121–132.
... Trust, for funding the research under project no. F/476/Z; Bas van Geel, Roy Watling and others for advice regarding fungal spore identification, and Jack Rogers for advice regarding fungal ecology. We are also grateful to H.J.B. Birks, K.J. Edwards, T. Mighall and J. B. Riding who made insightful...
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Journal Article
Published: 11 March 2021
Bulletin de la Société Géologique de France (2021) 192 (1): 6.
... and stony soils, such as Arenaria serpylifolia and Linaria supina , together with the recorded fungal species Cenococcum geophilum , indicative of short environmental stress ( Kroll, 1988 ; van Geel et al. , 1989 ; Walker et al. , 2003 ; Eide et al. , 2006 ), suggest most certainly an erosion...
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Journal Article
Published: 09 March 2021
Bulletin de la Société Géologique de France (2021) 192 (1): 4.
... were defined by the CONISS cluster analysis ( Grimm, 1987 ). In addition to pollen analysis, coprophilous fungi ( Cercophora -type, Sordaria -type, Podospora -type, Sporormiella -type) were identified according to the classification devised by Van Geel and Cugny ( Van Geel, 2001 , Van Geel...
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Journal Article
Published: 20 January 2022
Journal of Foraminiferal Research (2022) 52 (1): 40–56.
... of the Khasi Hills , South Shillong Plateau, India : Palaeobotanist , v. 49 , p. 461 – 484 . Geel, T., 2000 , Recognition of stratigraphic sequences in carbonate platform and slope deposits: Empirical models...
Journal Article
Published: 01 December 2009
Bulletin of Canadian Petroleum Geology (2009) 57 (4): 409–429.
... numbers, and freshwater algae, is suggestive of sediment derivation from local point sources off the adjacent paleohighlands (Table 2 ; Van Geel and Grenfell, 1996 ). Facies association 1 is interpreted to be a mixed-energy brackish water embayment or back-barrier deposit (cf., Howard and Frey, 1985...
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Journal Article
Published: 01 August 2007
Vadose Zone Journal (2007) 6 (3): 610–637.
... . 30 : 2873 – 2882 . Van Geel , P.J. , and S.D. Roy . 2002 . A proposed model to include a residual NAPL saturation in hysteretic capillary–pressure–saturation relationships . J. Contam. Hydrol . 58 : 79 – 110 . Van Geel , P.J. , and J.F. Sykes . 1994 . Laboratory...
Journal Article
Published: 01 February 2003
Vadose Zone Journal (2003) 2 (1): 25–33.
..., it is clear that there will be an important role for these models in the future. Recently, some contributions have appeared in the literature that start to address the residual saturation formation issues in a more focused manner ( Wipfler and van der Zee, 2001 ; Van Geel and Roy; 2002). A problem affecting...
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Journal Article
Published: 01 August 2007
Vadose Zone Journal (2007) 6 (3): 471–482.
... constitutive relations, a model by Land (1968) has commonly been used to predict entrapped NAPL saturations (e.g., Parker and Lenhard, 1987 ; Lenhard, 1992 ; Van Geel and Roy, 2002 ; Gerhard and Kueper, 2003 ; Lenhard et al., 2004 ). While Land (1968) based his entrapment model on entrapped gas...
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Journal Article
Published: 01 January 2002
Reviews in Mineralogy and Geochemistry (2002) 48 (1): 673–699.
... of aqueous metal cations at pH 2–7 . Chem Geol 151 : 215 – 233 . Van Emden B , Thornber MR , Graham J , Lincoln FJ ( 1997 ) The incorporation of actinides in monazite and xenotime from placer deposits in Western Australia . Can Mineral 35 : 95 – 104 Van Geel J...
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Journal Article
Published: 01 March 2002
Journal of Sedimentary Research (2002) 72 (2): 226–239.
...Joep E.A. Storms; G.J. Weltje; J.J. van Dijke; C.R. Geel; S.B. Kroonenberg Abstract Numerical modeling on a geological timescale is a rapidly expanding tool to investigate controls on formation of the stratigraphic record. Modeling enables us to test existing ideas, but verification of model...
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Journal Article
Journal: Interpretation
Published: 03 March 2022
Interpretation (2022) 10 (2): T279–T290.
... by an experienced interpreter, which makes this process subjective, laborious, and time-consuming. Several machine-learning models have been proposed to automate multiclass facies segmentation, but significant practical challenges (e.g., limited scope of labels for training purposes, skewed data distribution...
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Journal Article
Journal: Palynology
Published: 25 January 2022
Palynology (2022) 46 (1): 1–18.
...; but Glomus sp., indicate soil erosion, whereas Sporormiella sp. and Sordaria sp. are coprophilous fungal spores and indicate herbivory and grazing activities around the area of investigation (Van Geel and Aptroot 2006 ; Limaye et al. 2007 ; Raper and Bush 2009 ; Quamar and Stivrins 2021...
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Journal Article
Journal: Palynology
Published: 14 October 2024
Palynology (2024) 48 (4): 2365735.
..., thermally mature plant material (by-products of burnt or heated materials), fungal spores/filaments and vascular mycorrhiza fungi (VAM) were also identified and counted (Van Geel 1978 ; Jacobson and Anderson 1993 ; Alves-de-Souza et al. 2008 ; Ribeiro et al. 2010 ; Hunt and Premathilake 2012 ; Seears...
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Journal Article
Published: 26 March 2021
Journal of Sedimentary Research (2021) 91 (3): 262–295.
...., Weltje, G.J., Van Dijke, J.J., Geel, C.R., and Kroonenberg S.B., 2002 , Process–response modeling of wave-dominated coastal systems: simulating evolution...
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Journal Article
Journal: SEG Discovery
Published: 01 July 1993
SEG Discovery (1993) (14): 1–36.
... Multidisciplinary Team Approach to +40 5F -1-OPERATING REVENUE Successful Mineral Exploration Roy Woodall ;o +20 70 Director of Exploration, ljili LL ,c Western Mining Corporation Limited P.O. Box 409, Unley, Adelaide South Australia 5061 (c0 I '!his keynote address was presented by Mr. Woodall at the Society...
Journal Article
Published: 01 March 2018
The Journal of Geology (2018) 126 (2): 185–205.
... of YDB Layer, and Selected References Sites (35) Location Continent Modeled ages (cal BP) Uncertainty (68% CI) Latitude Longitude References Well-dated YDB sites with biomass-burning proxies:  Aalsterhut Netherlands Europe 12,780 35 ∼51.4272 5.5853 van Hoesel et al. 2012...
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Journal Article
Published: 28 February 2024
Bulletin of the Seismological Society of America (2024) 114 (3): 1365–1391.
... and upper mantle phases (e.g., Gaherty and Jordan, 1995 ; Hansen et al. , 2008 ; Chang, van der Lee, Matzel, and Bedle, 2010 ). Doody et al. (2023a) showed that a conservative multiscale inversion approach can result in models that are robust to the choice of starting model. We followed...
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Journal Article
Published: 25 March 2014
Bulletin of the Seismological Society of America (2014) 104 (2): 875–884.
.../1998JB900025 . Ritsema J. Deuss A. van Heijst H. J. Woodhouse J. H. ( 2011 ). S40RTS: A degree‐40 shear‐velocity model for the mantle from new Rayleigh wave dispersion, teleseismic traveltime and normal‐mode splitting function measurements , Geophys. J. Int. 184 , 1223 – 1236...
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Journal Article
Published: 01 January 1988
Jour. Geol. Soc. India (1988) 31 (1): 1–165.
...-composition models are available. Geothermobarometric studies (4) indicate that the entire KKB was metamorphosed at relatively uniform conditions of 5.5 kb and 750 Therefore, all calculations were made at this pressure and temperature. The posltion of the Mg-end-member reactions were calculated using...