The Collaborative International Dictionary
Interstratified
Interstratified \In`ter*strat"i*fied\, a. (Geol.) Stratified among or between other bodies; as, interstratified rocks.
Wiktionary
interstratified
a. stratified with two alternating types of strata
WordNet
interstratified
See interstratify
interstratify
v. arrange rocks in alternating strata
[also: interstratified]