
While marble is dissolved by the chemicals in the atmosphere and in rainwater, sandstone is not. It is, however, vulnerable to abrasion by running water or by particles in the wind. Once water found a soft spot in the stone, it would eat it away more and more as it ran through.
Wow....
Date: 2003-01-21 06:10 am (UTC)From:Re: Wow....
Date: 2003-01-21 01:19 pm (UTC)From:erosion
Date: 2003-01-21 01:13 pm (UTC)From:Re: erosion
Date: 2003-01-21 02:58 pm (UTC)From: