Arock inclusion in a basalt lava flow is dated at 56 ma. this means the lava flow must have occurred 56 ma.

After

Explanation:

Usually, the inclusion rocks are old when compared to the stones that are within the surrounding environment. Therefore inclusion basalt means that as the lava flow moves in a given area to acquire an inclusion rock. Ultimately when lava is flowing in the water, a lot of sediments are generated while some pieces of lava are falling. The pillow lava formed are essential to the underwater effusion and eruptions of the fluid basalt lava. This is because the ability of water helps them in developing a thicker skin.