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Data set consists of lab data for sites Y04-01 to Y04-04. Original data set created in 2004; an update was provided in March 2023 but horizon designations were not updated to be consistent with the paper.

In July 2009, Dr. Paul Sanborn undertook the first soils field research at the Fort Selkirk volcanic field in central Yukon, with helicopter support and funding from the Yukon Geological Survey. This file includes the following data sets gathered from the research:

• Ft Selkirk 110114069.xls [particle size analysis data, CANTEST]
• S1090final.xlsx [chemical analysis data, Ministry of Forests & Range, Analytical Chemistry Laboratory]
• S1112final.xlsx [chemical analysis data, Ministry of Forests & Range, Analytical Chemistry Laboratory]
• Ft Selkirk 2009 soils data (updated Sept 15, 2010 and April 10, 2023).xls [consolidated lab data for all 2009 samples]

For July 1-7, 2009, Dr. Paul Sanborn did the first soils field research at the Fort Selkirk volcanic field in central Yukon, with helicopter support and funding from the Yukon Geological Survey.

Initial findings were published in the 2009 edition of Yukon Exploration and Geology, but this paper did not include most of the laboratory data:
Sanborn, P., 2010. Soil reconnaissance of the Fort Selkirk volcanic field, Yukon (115I/13 and 14). In: Yukon Exploration and Geology 2009, K.E. MacFarlane, L.H. Weston and L.R. Blackburn (eds.), Yukon Geological Survey, Whitehorse, Yukon. pp. 293-304. https://emrlibrary.gov.yk.ca/ygs/yeg/2009/2009_p293-304.pdf [Note that in Fig. 1, the labels for Camp 1 and Camp 2 on map are transposed; Camp 1 should be to the east of Camp 2.]

The Lost Chicken Mine, a placer gold mine in eastern Alaska, approximately 120 km west of Dawson City, Yukon, is an important fossil locality for the late Pliocene (approximately 2.5 – 3.0 million years ago). A comprehensive account of the stratigraphy and paleontology of this site was given by:
Matthews, J.V., Jr., J.A. Westgate, L. Ovenden, L.D. Carter, and T. Fouch. 2003. Stratigraphy, fossils, and age of sediments at the upper pit of the Lost Chicken gold mine: new information on the late Pliocene environment of east central Alaska. Quaternary Research 60: 9-18. https://doi.org/10.1016/S0033-5894(03)00087-5

Dr. Paul Sanborn visited the site on July 20, 2004, as part of a group led by Duane Froese (Professor, University of Alberta). The group concentrated on a single exposure (~ 2 m thick) straddling the Lost Chicken tephra, a volcanic ash bed (2.9 ± 0.4 myr) which is a major stratigraphic marker at the site. Sanborn described, photographed, and sampled this exposure, and obtained a basic set of characterization data. Intact samples were collected but thin sections were never produced.

In July 2009, Dr. Paul Sanborn undertook the first soils field research at the Fort Selkirk volcanic field in central Yukon, with helicopter support and funding from the Yukon Geological Survey. This document is a complete transcription of field notes, with
soil and site photographs.

The Kluane Lake area of SW Yukon was a continuing focus of Dr. Paul Sanborn's research for more than a decade, and generated several productive collaborations. Key themes included biological soil crusts in boreal grasslands, and interactions between aeolian sediment deposition, slope processes, and fire in boreal grassland and forest soils.

Research results appeared in these publications:
Marsh, J., Nouvet, S., Sanborn, P., and Coxson, D. 2006. Composition and function of biological soil crust communities along topographic gradients in grasslands of central interior British Columbia (Chilcotin) and southwestern Yukon (Kluane). Canadian Journal of Botany 84: 717-736. https://doi.org/10.1139/b06-026

Pautler, B.G., Reichart, G.-J., Sanborn, P.T., Simpson, M.J., and Weijers, J.W.H. 2014. Comparison of soil derived tetraether membrane lipid distributions and plant-wax δD compositions for reconstruction of Canadian Arctic temperatures. Palaeogeography, Palaeoclimatology, Palaeoecology 404: 78-88. https://doi.org/10.1016/j.palaeo.2014.03.038

Sanborn, P. and A.J.T. Jull. 2010. Loess, bioturbation, fire, and pedogenesis in a boreal forest – grassland mosaic, Yukon Territory, Canada. 19th World Congress of Soil Science, Soil Solutions for a Changing World 1 – 6 August 2010, Brisbane, Australia. http://www.iuss.org/19th%20WCSS/Symposium/pdf/0120.pdf

The 2003 field work with Darwyn Coxson was a pilot study to assess the types and distribution of biological soil crusts in boreal grasslands in the Kluane Lake area. Eight sites were visited at which the team sampled the crust and the uppermost A horizon immediately underneath it. Note that site numbers Y03-03, -04, -05, -06, -07, -09, -10 and -12 were indicated as sites 3, 4, 5, 6, 7, 9, 10 and 12 in Table 1 of Marsh et al. (2006). Additional crust sampling was conducted at two additional sites (“Peninsula”, “Silver City”) in 2004; details of sampling methods and site locations are in Marsh et al. (2006).

Results from 2009 field work were presented in Sanborn and Jull (2010), along with soil charcoal radiocarbon dates from 2003-2008 sampling which were used to reconstruct fire history in the Kluane Lake area. The 2003 (a single site at Silver City), 2004, and 2008 field work consisted of a reconnaissance of grassland and forest sites across a range of aspects and slope positions in order to recover buried soil charcoal.

File consists of the following data sets:

• Kluane crust Min N (2003) S671FINL.xls [mineralizable nitrogen for biological soil crusts & upper mineral soil, 2003 samples]
• Kluane Crust samples (2004) moisture contents.xls [moisture content of air-dry 2004 crust samples from Peninsula & Silver City sites; sampling procedures & locations in Marsh et al. (20060]
• Kluane Soil Crusts (2004) chemical analyses.xls [consolidated file of chemical data for 2004 crust samples from Peninsula & Silver City sites]
• Kluane 2003 soil & crust 15N data.xls [15N natural abundance, total N, organic & inorganic C for 2003 crust & upper mineral soil samples]
• Kluane 2003 soil data.xlsx [consolidated file of chemical data for 2003 crust and mineral horizon soil samples]
• Kluane Crust 2004 total C & N data.xls
• Kluane AMS dates (2003-2008 charcoal samples).xls [radiocarbon dates from the University of Arizona Accelerator Mass Spectrometry Lab]
• Kluane soil transect - texture data.xls [2009 soil particle size analysis data, with potential lithological breaks highlighted]
• Kluane surveys 2009.xls [topographic surveys for 3 soil transects cutting across eskers along Cultus Bay Rd., SE shore of Kluane L.]
• S1061_1069_Final_Rev1.xls [lab data report from Ministry of Forests Analytical Chemistry Laboratory for 2009 transect samples: total C, inorganic C, & total N]
• 100812003 (annotated) -corrected.xls [2009 transect samples: particle size analysis data report from CANTEST]
• Kluane soil transect - master data file.xls

Forest soil sulphur research was a continuing interest for Dr. Paul Sanborn for more than 30 years, beginning at UBC in the mid-1980s when he took a graduate course in Forest Soils from Dr. Tim Ballard. Among the things that he learned was that soils in much of BC were deficient in sulphur (S). Simultaneously, he became aware of the large amount of research on prescribed fire in BC forests, with broadcast burning being the main method of site preparation across much of the province at that time.

Sanborn undertook various projects in this area of research:

1. UBC Postdoctoral Project on effects of prescribed fire on sulphur in forest soils (1988-90)
2. Cluculz retrospective study (E.P. 886.10) with the BC Ministry of Forests and UNBC
3. Sulphur stable isotope tracer study (E.P. 886.15) with the BC Ministry of Forests and UNBC

Document is a research installation layout map for the Kenneth Creek site of the Sulphur stable isotope tracer study (E.P. 886.15).

Data sets for the Sulphur stable isotope tracer study (E.P. 886.15) include:

• 03-095 UNBC PS-For.xls Particle size analyses (Kenneth Creek 0-20 & 20-40 cm)
• 03-096 UNBC PS-For.xls Particle size analyses (Holy Cross 0-20 & 20-40 cm)
• 082037.xls XRF elemental analysis (Holy Cross pedon)
• 082038.xls XRF elemental analysis (Kenneth Creek pedon)
• 084996.xlsx XRF elemental analysis (HC & KC parent materials)
• EP 886 15 S isotope data (2001-2005) - foliage_completed (Feb 18).xls Pine foliage d34S (total S & total SO4-S)
• EP 886.15 2003 Foliage & Soil Chemistry Summary.xls
• EP 886.15 Foliar Analyses (selected) 2001-2006.xls Total N & S, SO4-S
• EP 886.15 Holy Cross & Kenneth Creek 2005 foliage.xls
• EP 886.15 Holy Cross & Kenneth Creek 2006 foliage.xls
• EP 886.15 Holy Cross 2001 FH (S516FINL).xls
• EP 886.15 Holy Cross 2001 Foliage (T727FINL).xls
• EP 886.15 Holy Cross 2001 Litter (S515FINL).xls
• EP 886.15 Holy Cross 2001 Mineral Soil (0-20 cm) (S507FINL).xls
• EP 886.15 Holy Cross 2002 Foliage (T785FINL).xls
• EP 886.15 Holy Cross 2003 FH (S642FINL).xls
• EP 886.15 Holy Cross 2003 Foliage (T836FINL).xls
• EP 886.15 Holy Cross 2003 Litter (S641FINL).xls
• EP 886.15 Holy Cross 2003 Mineral Soil (0-20 cm) (S643FINL).xls
• EP 886.15 Holy Cross 2004 FH (S702FINL).xls
• EP 886.15 Holy Cross 2004 Foliage (T904FINL).xls
• EP 886.15 Holy Cross 2004 Litter (S701FINL).xls
• EP 886.15 Holy Cross 2004 Mineral Soil (0-20 cm) (S703FINL).xls
• EP 886.15 Kenneth Creek 2001 FH (S521FINL).xls
• EP 886.15 Kenneth Creek 2001 Foliage (T727FINL).xls
• EP 886.15 Kenneth Creek 2001 Litter (S520FINL).xls
• EP 886.15 Kenneth Creek 2001 Mineral Soil (0-20 cm) (S508FINL).xls
• EP 886.15 Kenneth Creek 2001 Mineral Soil (20-40 cm) (S509FINL).xls
• EP 886.15 Kenneth Creek 2002 Foliage (T785FINL).xls
• EP 886.15 Kenneth Creek 2003 FH (S645FINL).xls
• EP 886.15 Kenneth Creek 2003 Foliage (T837FINL).xls
• EP 886.15 Kenneth Creek 2003 Litter (S644FINL).xls
• EP 886.15 Kenneth Creek 2003 Mineral Soil (0-20 cm) (S646FINL).xls
• EP 886.15 Kenneth Creek 2003 Mineral Soil (20-40 cm) (S647FINL).xls
• EP 886.15 Kenneth Creek 2004 FH (S705FINL).xls
• EP 886.15 Kenneth Creek 2004 Foliage (T905FINL).xls
• EP 886.15 Kenneth Creek 2004 Litter (S704FINL).xls
• EP 886.15 Kenneth Creek 2004 Mineral Soil (0-20 cm) (S706FINL).xls
• EP 886.15 Kenneth Creek 2004 Mineral Soil (20-40 cm) (S707FINL).xls
• EP 886.15 Sample Inventory.xls Listing of MoF Lab Job No.'s
• Fertilizer March 2003.xls d34S data for commercial fertilizer S sources
• hc_2002.xls Initial (2002) pine tree measurement data - Holy Cross
• kc_2002.xls Initial (2002) pine tree measurement data - Kenneth Creek

With the assistance of the Yukon Geological Survey, Dr. Paul Sanborn was able to visit the terminus of the Klutlan Glacier, a major outlet glacier which originates in the Alaska portion of the St. Elias Mountains. The stagnant terminus has a thick cover of debris, including a large component of White River tephra, providing enough soil material to support a boreal forest. Field work occurred on July 8, 2007, and results were published as:

Sanborn, P. 2010. Soil formation on supraglacial tephra deposits, Klutlan Glacier, Yukon Territory. Canadian Journal of Soil Science 90: 611-618. https://doi.org/10.4141/cjss10042

Document is a research installation layout map for the Holy Cross Creek site of the Sulphur stable isotope tracer study (E.P. 886.15).

During the 1980s, Agriculture Canada pedologists Scott Smith (retired from Summerland Research Station, formerly based in Whitehorse) and Charles Tarnocai (retired from Central Experimental Farm, Ottawa) had a large field program which addressed the trends in soil development in the central Yukon. Across this region, particularly between Whitehorse and Dawson City, the land surfaces and surficial deposits vary greatly in age due to the differing extents of glaciations over the past ~2 million years.

This work built on a pioneering study from the previous decade:
Foscolos, A.E., N.W. Rutter, and O.L. Hughes. 1977. The use of pedological studies in interpreting the Quaternary history of central Yukon Territory. Bulletin 271. Geological Survey of Canada, Ottawa. 48 p. https://doi.org/10.4095/103066

Tarnocai and Smith presented their results in two publications:
C. A. S. Smith, C. Tarnocai, and O. L. Hughes. 1986. Pedological investigations of Pleistocene glacial drift surfaces in the central Yukon. Géographie physique et Quaternaire, 40 (1): 29–37. https://doi.org/10.7202/032620ar
Tarnocai, C. and C. A. S. Smith. 1989. Micromorphology and development of some central Yukon paleosols, Canada. Geoderma 45 (2): 145-162. https://doi.org/10.1016/0016-7061(89)90047-5

Tarnocai and Smith shared the unpublished data and soil samples from this work with Dr. Paul Sanborn, and this resulted in a student project published as:
Daviel, E., P. Sanborn, C. Tarnocai, and C.A.A. Smith. 2011.Clay mineralogy and chemical properties of argillic horizons in central Yukon paleosols. Canadian Journal of Soil Science 91: 83-93. https://doi.org/10.4141/cjss10067

This data set consists of elemental analysis data for selected B horizons from Wounded Moose paleosols sampled by Tarnocai and Smith. The file includes the original ALS lab report, additional panes showing comparison of replicates, and calculation of a weathering index.

This image appears as Figure 8 in the publication:
Sanborn, P., 2010. Soil reconnaissance of the Fort Selkirk volcanic field, Yukon (115I/13 and 14).
In: Yukon Exploration and Geology 2009, K.E. MacFarlane, L.H. Weston and L.R. Blackburn
(eds.), Yukon Geological Survey, Whitehorse, Yukon. pp. 293-304. https://emrlibrary.gov.yk.ca/ygs/yeg/2009/2009_p293-304.pdf