  Using the warped extra dimension geometry of the many-brane extension of the
Randall-Sundrum solution, we find a natural explanation for the observed quark
masses of the three Standard Model (SM) generations. Localizing massless SM
matter generations on neighboring 3-branes in an extra dimensional world leads
to phenomenologically acceptable effective four dimensional masses arising from
the coupling of the fermion field with the background metric. Thus this
geometry can simultaneously address the gauge and quark mass hierarchy
problems.
