Significats de distinct stratification en anglès

The whole country was composed of sandstone and indurated clay, with very distinct stratification.

There is no distinct stratification; nor could I distinguish a crateriform structure in any of the hills of this series.

Many gullies came down from the range; which was composed of baked sandstone, with not very distinct stratification, and irregularly broken blocks.

There is no distinct stratification, but parts are imperfectly laminated; and the whole abounds with innumerable veins, and vein-like masses, both small and large.