Analysis reveals local deformations in the Earth's crust at the Mid-Atlantic Ridge, suggesting interactions among lithosphere blocks cause these changes.
Based on analysis of bathymetric maps at a scale of 1:250,000 in the sector 2°N–16°N and physical simulation, a model is proposed to describe local deformations of the Earth’s crust in the MAR crest zone. Local deformations associated with general extension of the fragmented lithosphere are due to inhomogeneous mechanical interaction of lithosphere blocks at various depths. Inhomogeneous depth distributions of “structural discrepancy” leads to protruding deep-seated rocks along block boundaries toward the surface of the sea bottom. There are no essential horizontal displacements, but the block boundaries are deformed considerably. Near the surface the resulting morphostructures are complicated by collapses in the flanks of troughs and rift valleys.
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Vn et al. (1993) studied this question.
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