Available Weekly Reports
- Volcano Info
- Search Database
- Info & Contacts
There are no activity reports for Endeavour Ridge.
Summary of eruption dates and Volcanic Explosivity Indices (VEI).
|Start Date||Stop Date||Eruption Certainty||VEI||Evidence||Activity Area or Unit|
|3490 BCE (?)||Unknown||Confirmed||0||Uranium-series|
|6930 BCE (?)||Unknown||Confirmed||0||Uranium-series|
The following references are the sources used for data regarding this volcano. References are linked directly to our volcano data file. Discussion of another volcano or eruption (sometimes far from the one that is the subject of the manuscript) may produce a citation that is not at all apparent from the title. Additional discussion of data sources can be found under Volcano Data Criteria.
Carbotte S M, Detrick R S, Harding A, Canales J P, Babcock J, Kent G, Van Ark E, Nedimovic M, Diebold J, 2006. Rift topography linked to magmatism at the intermediate spreading Juan de Fuca Ridge. Geology, 34: 299-212.
Delaney J R, Robigou V, McDuff R E, 1992. Geology of a vigorous hydrothermal system on the Endeavour segment, Juan de Fuca Ridge. J Geophys Res, 97: 19,663-19,682.
Goldstein S J, Murrell M T, Janecky D R, Delaney J R, Clague D A, 1992. Geochronology and petrogenesis of MORB from the Juan de Fuca and Gorda ridges by 238U-230Th disequilibrium. Earth Planet Sci Lett, 109: 255-272.
Karsten J L, Hammond S R, Davis E E, Currie R G, 1986. Detailed geomorphology and neotectonics of the Endeavour Segment, Juan de Fuca Ridge: new results from Seabeam swath mapping. Geol Soc Amer Bull, 97: 213-221.
Van Ark E M, Detrick R S, Canales J P, Carbotte S M, Harding A J, Kent G M, Nedimovic M R, Wilcock W S D, Diebold J B, Babock J M, 2007. Seismic structure of the Endeavour Segment, Juan de Fuca Ridge: correlations with seismicity and hydrothermal activity. J Geophys Res, 112: B02401, doi:10.1029/2005JB004210.
Volpe A M, Goldstein S J, 1993. 236Ra-230Th disequilibrium in axial and off-axis mid-oecan ridge basalts. Geochim Cosmochim Acta, 57: 1233-1241.
The Endeavour Ridge lies near the northern end of the Juan de Fuca Ridge, west of the coast of Washington and SW of Vancouver Island. The northern end of Endeavour Ridge is offset to the east with respect to the West Valley Segment, which extends north to the triple junction with the Sovanco Fracture Zone and the Nootka Fault. The 90-km-long, NNE-SSW-trending Endeavour Ridge segment lies at a depth of more than 2000 m and is the site of vigorous high-temperature hydrothermal vent systems that were first discovered by scientists in 1981. Five major vent fields that include sulfide chimneys and black smoker vents, first seen from the submersible vehicle Alvin in 1984, are spaced at about 2-km intervals in a 1-km-wide axial valley at the center of the Endeavour Ridge. Preliminary uranium-series dates of Holocene age were obtained on basaltic lava flows from Endeavour Ridge, and other younger "zero-age" flows were sampled. Seismic swarms were detected at the Endeavour Ridge in 1991 and 2005.