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Bockheim, James G; Coronato, A; Rabassa, J; Ercolano, B; Ponce, J (2009): (Table 2) Properties of relict ice and sand wedges from six sites near Rio Gallegos, southern Patagonia [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.786099, Supplement to: Bockheim, JG et al. (2009): Relict sand wedges in southern Patagonia and their stratigraphic and paleo-environmental significance. Quaternary Science Reviews, 28(13-14), 1188-1199, https://doi.org/10.1016/j.quascirev.2008.12.011

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Abstract:
Relict sand wedges are ubiquitous in southern Patagonia. At six sites we conducted detailed investigations of stratigraphy, soils, and wedge frequency and characteristics. Some sections contain four or more buried horizons with casts. The cryogenic features are dominantly relict sand wedges with an average depth, maximum apparent width, minimum apparent width, and H/W of 78, 39, 3.8, and 2.9 cm, respectively. The host materials are fine-textured (silt loam, silty clay loam, clay loam) till and the infillings are aeolian sand. The soils are primarily Calciargidic Argixerolls that bear a legacy of climate change. Whereas the sand wedges formed during very cold (-4 to -8 °C or colder) and dry (ca. <=100 mm precipitation/yr) glacial periods, petrocalcic horizons from calcium carbonate contributed by dustfall formed during warmer (7 °C or warmer) and moister (>= 250 mm/yr) interglacial periods. The paleo-argillic (Bt) horizons reflect unusually moist interglacial events where the mean annual precipitation may have been 400 mm/yr. Permafrost was nearly continuous in southern Patagonia during the Illinoian glacial stage (ca. 200 ka), the early to mid-Pleistocene (ca. 800-500 ka), and on two occasions during the early Pleistocene (ca. 1.0-1.1 Ma).
Keyword(s):
ipy
Project(s):
International Polar Year (2007-2008) (IPY)
Coverage:
Latitude: -52.000000 * Longitude: -70.000000
Event(s):
Patag_RioGall * Latitude: -52.000000 * Longitude: -70.000000 * Location: Patagonia
Comment:
Data extracted in the frame of a joint ICSTI/PANGAEA IPY effort, see http://doi.pangaea.de/10.1594/PANGAEA.150150
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1 Area/localityAreaBockheim, James G
2 Surface descriptionSurf descrBockheim, James Gsurface into which wedges extend
3 Sediment typeSedimentBockheim, James Gwedge material
4 Embedding materialEmbedding matBockheim, James Ghost material
5 Sample typeSamp typeBockheim, James Gwedge type
6 DescriptionDescriptionBockheim, James Gwedge shape: W = wedge, F = funnel, V = vein, C = complex
7 FrequencyFrequency#Bockheim, James Gnumber of wedges/100 m
8 HeightHeightBockheim, James Gavg. wedge height [cm]
9 WidthwmBockheim, James Gmax. wedge width
10 WidthwmBockheim, James Gmin. wedge width
11 RatioRatioBockheim, James Gheight (avg.)/width (avg.)
12 StageStageBockheim, James GCarbonate stage: I = discontinous clast coatings; II = continuous clast coatings; II+ = continuous clast coatings and local cementation, whitened appearance; III = 50-90% K fabric; III+ = continuous cementation; IV = continuous cementation and laminated structure
13 StageStageBockheim, James GCarbonate stage: I = discontinous clast coatings; II = continuous clast coatings
14 Soil reaction/conductivitySoil reaction/conductivityBockheim, James Gwedge reaction to 10% HCl; after Soil Survey Staff (1993)
15 TextureTextureBockheim, James Gof wedge; SL = sandy loam, LS = loamy sand
16 TextureTextureBockheim, James Gof host; SL = sandy loam, LS = loamy sand
17 Color descriptionColor descBockheim, James GMunsell Color System (1994)of wedge
18 StructureStructureBockheim, James Gof wedge; pr = prismatic; vl = vertically laminated; vs = vertically oriented stones; m = massive; 0sg = structureless, single grain
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
143 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

1 
Area		2 
Surf descr
(surface into which wedges extend)		3 
Sediment
(wedge material)		4 
Embedding mat
(host material)		5 
Samp type
(wedge type)		6 
Description
(wedge shape: W = wedge, F = f...)		7 
Frequency [#]
(number of wedges/100 m)		8 
Height
(avg. wedge height [cm])		9 
w [m]
(max. wedge width)		10 
w [m]
(min. wedge width)		11 
Ratio
(height (avg.)/width (avg.))		12 
Stage
(Carbonate stage: I = disconti...)		13 
Stage
(Carbonate stage: I = disconti...)		14 
Soil reaction/conductivity
(wedge reaction to 10% HCl; af...)		15 
Texture
(of wedge; SL = sandy loam, LS...)		16 
Texture
(of host; SL = sandy loam, LS ...)		17 
Color desc
(of wedge)		18 
Structure
(of wedge; pr = prismatic; vl ...)
Monte AymontCabo VirgenesAeolian siltTillSand6 W, 2 V, 2 C,1 F31940.420.0543.800silsicl10 Y 3/3vs, m
Est. 3 de EneroSierras de los Frailes upperAeolian sandTillSand4 F, 2 C, 1 W, 1 V291240.570.0604.1II-IIstrongly effervescentslsil10 Y 5/4vl, pr
Est. 3 de EneroSierras de los Frailes lowerAeolian sandTillSand7 W, 4 F, 1 C43700.380.0232.100nrlssil2.5 Y 5/4vl
Chimen AikeSierras de los Frailes upperAeolian sandOutwashSand5 W, 1 V, 1 C32660.240.0403.400slightly effervescentlssl10 Y 5/4vl, vs, pr
Chimen AikeSierras de los Frailes lowerAeolian sandOutwashSand3 W14810.260.0272.9IV0strongly effervescentslsl10 Y 5/4vl, vs
Punta LoyolaAlluvial fanAeolian siltAlluviumSand5 W, 1 F136400.310.0201.6II+-III0nrsilsicl2.5 Y 4/4pr
Est. Bella VistaBella VistaAeolian sandTillSand5 W, 4 F, 2 C, 1 V34690.550.0412.700nrslcl2.5 Y 3/3m-0sg
Rio Gallegos cityRio ChicoAeolian sandAlluviumSand5 W, 2 F, 1 C52790.470.0221.9I-IV (II)0-Inrsl-lsscl2.5 Y 4/3pr