Abstract
Comprehensive high‐resolution sidescan sonar imagery, swath bathymetry, and photographic data from the TAG rift valley (Mid‐Atlantic Ridge, 26°N) suggest significant asymmetry in crustal accretion. Discontinuities and asymmetry in structural and volcanic morphology and age distribution about the spreading axis suggest a recent episode of preferential accretion of crust to the east throughout the central 10 km of this spreading segment. Such episodes may contribute to the long‐term spreading asymmetry in the area.
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