weatherable การใช้

Inceptisols soils have developed in relatively young material that have an Ochric epipedon is rich in weatherable minerals.
Two layers of PVC are laid down in a continuous extrusion process; the top layer is weatherable and durable material, which comprises up to 25 % of the siding thickness.
In USDA soil taxonomy, "'orthents "'are defined as entisols that lack horizon development due to either steep slopes or parent materials that contain no permanent weatherable minerals ( such as ironstone ).
During the Mesozoic the paleopedological record tends to be poor, probably because the absence of mountain-building and glaciation meant that most surface soils were very old and were constantly being weathered of what weatherable materials remained.
In Australia and a few regions of Africa, orthents occur in flat terrain because the parent rock contains " absolutely no weatherable minerals except short-lived additions from rainfall ", so that there is no breaking down of the minerals ( chiefly iron oxides ) in the rock.