Coral limestones.
Poorly dated but probably Mio-Pliocene.
11 species described from Kabasian locality (ref. 2043). Genera:
Porites, Goniopora, Cycloseris, Fungia, Trochoseris, Cyathoseris, Siderastraea, Prionastraea, Acanthastaea, Hydnophora, Stylophora
Sekoerau locality is probably identical and has 15 coral species according to ref. 2418.