Notes on Vent Field Description:
temperature anomalies and biological communities at low-temperature vents from 44 52'N to 44 54.5'N; Baker and Hammond (1992): "Smaller plumes that may also have originated during hydrothermal events were observed along the Cleft segment at 44.88N in 1987 and at 44.87N in 1989."
Notes Relevant to Biology:
Year and How Discovered (if active, visual confirmation is listed first):
1987-1989 camera/CTD tows
Discovery References (text):
Embley et al., Geology, 19, 771-775, 1991, Geology of the northern Cleft segment, Juan de Fuca Ridge: Recent lava flows, sea-floor spreading, and the formation of megaplumes.
Other References (text):
(plume only) Baker and Hammond (1992) Hydrothermal Venting and the Apparent Magmatic Budget of the Juan de Fuca Ridge. J. Geophys. Res. 97(B3): 3443-3456.