Formations adjectives are listed in this post. Each word below can often be found in front of the noun formations in the same sentence. This reference page can help answer the question what are some adjectives commonly used for describing FORMATIONS.
alluvial, ancient, bearing, beautiful, calcareous, certain, close, complex, coral, cretaceous, crystal, crystalline
cultural, curious, defensive, different, discursive, distinct, earlier, economic, fossiliferous, geologic, geological, great
higher, historical, ideological, institutional, large, larger, later, like, many, marine, mental, military
modern, national, natural, new, newer, older, other, particular, peculiar, political, primary, primitive
racial, recent, regular, religious, rock, rocky, same, secondary, sedimentary, separate, several, shaped
similar, social, strange, successive, such, tactical, tertiary, tight, various, volcanic, wonderful
Hope this word list had the adjective used with formations you were looking for. Additional describing words / adjectives that describe / adjectives of various nouns can be found in the other pages on this website.