allothogenic
adjective
al·loth·o·gen·ic
ə¦läthə¦jenik
variants or less commonly allothogenous
¦alə¦thäjənəs
: formed elsewhere : derived from preexisting rocks
clastic rocks or their mineral particles formed elsewhere and transported to their present position are allothogenic
: allogenic —opposed to authigenic 
Word History
Etymology
irregular (influenced by English -o-) from German allothigen allothogenic (from Greek allothi elsewhere—from allos other— + -genēs born) + English -ic or -ous
First Known Use
1888, in the meaning defined above