{"refrec":{"BRefID":78016,"RR":"<b>Barth, G.A.; Mutter, J.C.; Madsen, J.A.</b> (1991). Upper-mantle seismic reflections beneath the East Pacific Rise. <i>Geology (Boulder Colo.) 19(10)</i>: 994-996","BEntID":73553,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>Geology (Boulder Colo.) 19(10)</i>: 994-996","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Barth, G.A.; Mutter, J.C.; Madsen, J.A.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Barth, G.A.; Mutter, J.C.; Madsen, J.A.","Englishabstract":"Multichannel seismic reflection profiles from the East Pacific Rise show distinctive patterns of reflecting events immediately below the reflection Moho in the axial region. These events begin at the reflection Moho horizon between 2 and 12 km from the ridge axis. They dip inward, in two-way traveltime, by 0.2 to 0.4 s over horizontal distances of similar to 1 to 3 km; depth conversion indicates that their dip is between 30 degree and 45 degree . The events terminate or fade away down dip and are not observed beneath the ridge crest itself. They are observed individually or in pairs about the ridge axis and have only been identified in the axial region. We favor the hypothesis that the sub-Moho events are directly related to the accumulation of melt in the upper mantle. 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