The results show that the mineral comparative maturity of sandstones increases with the distance from the fan-delta plain to the fan-delta front;

Other variations of the plain vanilla bonds include zero coupon bonds which does not pay out interest but interest accrues and is paid in a lump sum at maturity.

Prior to the early 1980s, the bond market was comprised mainly of 'plain vanilla' bonds with simple cashflow structures, where coupon payments and maturity were fixed at the outset.