Seven dredges have been carried out along the western wall of the transform valley of the AB FZ, moving away (northward) from the RTI, i.e. with increasing age. Sampling sites are spaced about 30 km apart each corresponding to roughly 4 My in time. Only the first three dredges recovered samples (S2324, S325 and S2326); one dredge was empty and the farthermost from the RTI recovered only erratic pebbles of possible Antarctic origin. Recovered rocks are mainly granular to porphyroclastic (and less mylonitic) mantle peridotites, modally ranging from harzburgite to lherzolite. These samples show a strong variability in the opx/ol similarly to the peridotites recovered along the ridge axis. They are associated with variable shape of the granular orthopyroxene, ranging from rounded to lobate in the undeformed samples. Plagioclase appears locally scattered in the olivine matrix or along veinlet, sometimes associated with minor clinopyroxene. Several high-T gabbroic intrusions cut the mantle assemblage forming centimetric veins and patches. Gabbroic veins are also present as low-T intrusion along cracks, but they are usually strongly altered. Minor gabbroic and dunitic samples have been recovered together with oficalcitic breccias cemented by carbonate.