microstratigraphy
/ˌmʌɪkrəʊstrəˈtɪɡrəfi/Geology
noun
1The study of strata on a small or very detailed scale.
2The detailed stratigraphical features of a site, geological deposit, etc.
Origin
1930s; earliest use found in The Geographical Review. From micro- + stratigraphy, after German mikrostratigraphisch, adjective.