I propose to work in layers; make ceramics to bisque stage that incorporate the physical samples collected on site. Then take the work and put it back out onsite and use the environment to shape, weather, erode and transform the work before collecting and taking it back into the studio for further refinement and firing.
While looking for ceramic artists who explore the idea of erosion, I found Tamsin Van Essen, who has used sandblasting on porcelain in her Erosion project. Her ideas relate to biological erosion, but the technique is interesting and relevant.
http://www.tamsinvanessen.com/#/erosion/. Accessed 26/12/17