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Sasquatch Field

Name Alias(es): 
MGDS_FeatureID lowest in hierarchy: 
Vent Sites: 
Christmas Tree
Marker C
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Notes on Vent Field Description: 
Kelley et al. (2001): "The newly discovered Sasquatch field extends for >200 m in length, and venting is limited to a few isolated, small structures that reach 284 C. Active venting is confined to the northern portion of the field."; Glickson et al. (2006): "Sasquatch is located in a depression among truncated pillow ridges, and is comprised of ~10, 1-10 m high, fragile sulfide chimneys that vent fluids up to 287 C. The active field extends only ~20 x 20 m, although a linear, N-S trending ridge of nearly continuous extinct sulfide chimney debris and thick deposits of oxidized hydrothermal sediment extends 200 m south. Large extinct chimneys (up to 20 m high, 2-4 m in diameter) along the sulfide ridge indicate that Sasquatch was once far more active, though the current spatial extent and size of active chimneys are significantly smaller than the other four Endeavour vent fields. We suggest that seismic activity in 1999-2000 is responsible for renewed hydrothermal activity at Sasquatch, and that the field may have been further impacted by an earthquake swarm in 2005."; area of Canadian marine protected area. Rapid growth up to 10 m in one year.
Notes Relevant to Biology: 
Year and How Discovered (if active, visual confirmation is listed first): 
2000 submersible Alvin
Discovery References (text): 
Kelley, D. et al. (2001) Vent Field Distribution and Evolution Along the Endeavour Segment, Juan de Fuca Ridge. American Geophysical Union, Fall Meeting 2001, abstract #OS21B-0439.
Other References (text): 
Glickson et al. (2006) The Sasquatch Hydrothermal Field: Linkages Between Seismic Activity, Hydrothermal Flow, and Geology. Eos Trans. AGU, 87(52), Fall Meet. Suppl., Abstract V23B-0614.