Field study of the basalt rocks indicate in Jaubet-AL Dilbe that casts basalt in the field consist of tuffit, pyroclastic Sometimes consist of porphyric coarsebasalt with lava structure and brescia of tufa ,which contain a lot of surrounding rocks as lime stone and dolomite. The basalt mass noting the presence of dykes in search area incisor squad pyroclastic. The basalt color is light gray to dark gray. It is form the following petrographical kinds: olivine basalt, olivine augite basalt, olivine plagioclase basalt, plagioclase basalt. As for the lapilli consist of basalt (olivine basalt olivine vascular basalt and plagioclase basalt)