As opposed to discontinuous seafloor dredging and coring, ophiolites and downhole geophysical measurementsp rovide continuouss ectionsa long which high frequency accretion processes at mid-ocean ridges may be studied. A multidisciplinary study carried out on a volcanic section of the Semail ophiolite with MORB-like chemical composition reveals two main petrological and geochemical members. The boundary between the two is marked by the presence of a massive flow equating to the most primitive lava sampled, and across which significant changes are obtained.P etrophysicapl rofiles are correlatedt o geochemical variations and provide thus a description of the magmatic activity through time. These temporal variations may be compared to those derived from crustal drilling and continuous logging measurements.
As opposed to discontinuous seafloor dredging and coring, ophiolites and downhole geophysical measurementsp rovide continuouss ectionsa long which high frequency accretion processes at mid-ocean ridges may be studied. A multidisciplinary study carried out on a volcanic section of the Semail oph...
مادة فرعية
Geophysical Research Letters