Evidence from gravity data for focused magmatic accretion along the Mid-Atlantic Ridge
作者： John Lin , GM Purdy , H Schouten , J-C Sempere , C Zervas
DOI: 10.1038/344627A0
关键词: Gravity (chemistry) 、 Mid-Atlantic Ridge 、 Gravity anomaly 、 Oceanography 、 Geodynamics 、 Paleontology 、 Oceanic core complex 、 Ridge push 、 Ridge (meteorology) 、 Geology 、 Accretion (geology)
摘要: Gravity data from the Mid-Atlantic Ridge between latitudes 27°50′N and 30°40′N show that accretion of magma at ridge is focused discrete centres along spreading axis. Large positive gravity anomalies equivalent to reductions almost 50% in crustal thickness are observed over non-transform discontinuities bounding segments.
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