allomember

plural allomembers

1. geographyA subdivision of an alloformation that is distinguishable by characteristics such as lithology or fossil content.

   Lateral shifts in the location of flexural depocenters also take place on the scale of allomembers.

   2011, Cathy Busby, Antonio Azor Pérez, Tectonics of Sedimentary Basins: Recent Advances

   2 more examples

   An alloformation may be completely or only partly divided into allomembers, if some useful purpose is served, or it many have no allomembers.

   1990, Roy R. Lemon, Principles of Stratigraphy, page 520

   Within these allomembers Porebski ( 1995 ) recognized a total of eight transgressive-regressive ( T-R ) cycles.

   2006, Jane E. Francis, Duncan Pirrie, J. Alistair Crame, Cretaceous-Tertiary High-latitude Palaeoenvironments, page 129