microtopography
/ˈmʌɪkrə(ʊ)təˈpɒɡrəfi/ /ˌmʌɪkrə(ʊ)tɒˈpɒɡrəfi/noun
The surface features of an area, material, etc., on a small or microscopic scale; the study of such features.
Origin
1940s; earliest use found in Journal of Ecology. From micro- + topography.