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MEF burnholes

Computed crustal magnetization of Main Endeavour hydrothermal vent field, Juan de Fuca Ridge, NE Pacific, Left panel shows observed magnetic field anomalies along track lines shown in red. Red areas are published locations of Main Endeavour Field sulfide chimney edifices (after Delaney et al., 1992, 1997). Middle panel shows seafloor bathymetry (Johnson et al., 2002). Vent chimney locations are only approximate; errors in location are ~10 m and have not been adjusted to more detailed bathymetric map. Right panel shows crustal magnetization; note correlation of circular magnetization lows with active and inactive vent areas. Reference: Tivey and Johnson, 2002

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