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2023.2.2.8.10 · File · 2003
Part of Dr. Paul Sanborn fonds

This file contains the following photographs in both print photograph and negative format:

Slims River delta
Date: August 10, 2003
Location Coordinates: 61° 00’ 16.5” N, 138° 30’ 45.6” W, 790 m asl (± 11.0 m)
Print roll 3, #5A-6A: delta surface with salt efflorescences (Deschampsia caespitosa, Puchinella nuttalli, Aster siberica, Triglauca palustre); Juncus & Ranunculus on more active surface near river.

7A-9A: moister Deschampsia site, polygonal cracking patterns (W side of highway)

10A-12A: closeups of efflorescences

Cultus Bay / Rat Lake
Date: August 10, 2003
Location Coordinates: 61° 09’ 57.1” N, 138° 25’ 25.5” W, 806 m asl (± 6.2 m)
Slides #17-15: Rat Lake area (corresponding prints and negatives: Print roll 3, #13A-16A)
Print roll 3, #17A-19A: Collema & Psora crusts on exposed ridge on coarser substrate where loess has blown off (Corresponding slides: Slide Roll 2 #14-13)

Y03-03 (Rat Lake)
Date: August 10, 2003
Location Coordinates: 61° 10’ 3.5” N, 138° 25’ 37.2” W, 798.3 m asl (± 13.0 m)
Site Description: SW aspect, 45% slope; vegetation: Carex filifolia, A. frigida, Elymus trachycaulis
Sample Depths & Descriptions:

  • Y03-03-01 - Crust
  • Y03-03-02 - 0-9 cm - Ahk (10YR 4/2 m; weak-moderate, fine granular)
  • Y03-03-03 - 9-53 cm+ - Ck (2.5Y 6/3 m; massive)
    Print roll 3, #20A-22A (Corresponding slides: Slide Roll 2: #12-10)

Y03-04 (Rat Lake)
Date: August 10, 2003
Location Coordinates: 61° 10’ 10.5” N, 138° 26’ 3.7” W, 800.2 m asl (± 8.7 m)
Site Description: S aspect, 40% slope; vegetation: Elymus, Artemisia, flax, Penstemon, Linum lewisii
Sample Depths & Descriptions:

  • Y03-04-01 - Crust
  • Y03-04-02 - 0-6 cm - Ck (strongly effervescent)
  • Y03-04-03 - 6-16 cm - Ahkb
  • Y03-04-04 -16-75 cm+ - Ck (strongly effervescent; includes Bmk pockets)
    Print roll 3, #25A-28A (Corresponding Slides: Slide Roll 2: #9-7)

Y03-05 (SE of Rat Lake)
Date: August 10, 2003
Location Coordinates: 61° 9’ 43.2” N, 138° 25’ 34.8” W, 811.5 m asl (± 8.9 m)
Site Description: upper slope / crest; recent local sandy eolian veneer over older loess; vegetation: Carex, Elymus, Poa, Erigeron
Sample Depths & Descriptions:

  • Y03-05-01 - Crust
  • Y03-05-02 - 0-5 cm - Ahk
  • Y03-05-03 - 5-19 cm - Ck1
  • Y03-05-04 - 19-31 cm - Ahkb (siltier)
  • Y03-05-05 - 31-50 cm+ - Ck2
    Print roll 3, #34A-#E (Corresponding Slides: Slide Roll 2: Slides #6-1)
2023.2.2.8.11 · File · 2003
Part of Dr. Paul Sanborn fonds

This file contains the following photographs in both print photograph and negative format:

Y03-06
Date: August 10, 2003
Location Coordinates: 61° 4’ 1.5” N, 138° 21’ 57.4” W, 825.3 m asl (± 9.5 m)
Site Description: top of slope, E aspect
Sample Depths & Descriptions:

  • Y03-06-01 - Crust
  • Y03-06-02 - 0-6 cm - Ahk (10YR 3/2 m; strongly effervescent)
  • Y03-06-03 - 6-14 cm - Bmk (2.5Y 3/3 m; strongly effervescent)
  • Y03-06-04 - 14 cm+ - IICk (strongly effervescent)
    Print roll 4, #1-2 (Corresponding slides: Slide roll 3 #36-35)

Y03-07 (peninsula near Kluane visitor centre, Sheep Mt.)
Date: August 11, 2003
Location Coordinates: 61° 1’ 42.8” N, 138° 29’ 36.2” W, 786.7 m asl (± 5.7 m)
Site Description:

  • recent (?) landslide with loess accumulation in pockets, thinner on boulder surfaces, dominated by dark cyanobacteria crusts
  • limited loess accumulation due to exposure of site
  • crust is calcareous at surface
    Sample Depths & Descriptions:
  • Y03-07-01 - Crust
  • Y03-07-02 - 0-6 cm - Ck
  • Y03-07-03 - 6-9 cm - Ahkb
  • Y03-07-03 - 9 cm+ - Rock
    Print roll 4, #3-10 (Corresponding slides: Slide roll 3 #34-30)

Lower Slims River (lookout knoll at parking lot N of visitor centre)
Date: August 11, 2003
Location Coordinates: 60° 59’ 56.4” N, 138° 33’ 36.4” W, 844.8 m asl (± 7.3 m)
Site Description: some fire disturbance, but lower slopes have more intact crusts on loess (calcareous to surface)
Print roll 4, #11-17 (Corresponding slides: Slide roll 3 #29-26)

Lower Slims R (lowest bench below lookout knoll)
Date: August 11, 2003
Location Coordinates: 60° 59’ 51.8” N, 138° 33’ 36.2” W, 814.3 m asl (± 7.9 m)
Site Description: not burned; good intact crust; vegetation: A. frigida, Calamogrostis purpurea, Erigeron caespitosus, Linnaea, Carex filifolia (sparse cover ~ 50%)
Print roll 4, #18-20 (Corresponding slides: Slide roll 3, #25-23)

Slims Soil
(Holocene paleosol with well-developed B horizon under Neoglacial calcareous loess – location not recorded, but likely from roadcut exposure along main Slims R trail)
Print roll 4, #21 (Corresponding slides: Slides roll 3, #22)

S-facing opening above main trail
Date: August 11, 2003
Location Coordinates: 60° 59’ 53.1” N, 138° 34’ 9.0” W, 822.9 m asl (± 15.0 m)
Site Description:

  • Nostoc crust, also with Collema
  • calcareous to surface
  • site has later successional stage, with Arctostaphylos & Juniperus starting to move in
    Print roll 4, # 22-25

Lower end of Sheep Creek
Date: August 11, 2003
Misc. views of grassland vegetation and landscape (locations not recorded)
Print roll 4, #26-33 (Corresponding slides: Slides roll 3, #21-18)

Overlook at lower end of Sheep Creek canyon
Date: August 11, 2003
Location Coordinates: 60° 59’ 42.2” N, 138° 34’ 38.1” W, 878.0 m asl (± 9.5 m)
Site Description: heavy use by sheep (abundant droppings) but still has ~ 50% crust coverage
Print roll 4, #34-35 (Corresponding slides: Slides roll 3, #17-16)

Downvalley view toward Slims R delta, near Sheep Creek (?)
Date: August 11, 2003
(location not recorded)
Print roll 4, #36-E