ancient volcanic edifice

buried volcanic edifice

“shallow water” delta facies

Abukuma type facies series

abysmal facies

abyssal facies

actinolitic greenschist facies

adenoid facies

advantageous facies tract

aeolian facies

albite-epidote hornfels facies

albite-epidote-amphibolite facies

Aldan facies

algal facies

algal mat facies

algalmat facies

alimentation facies

alluvial fan facies

Alluvial-fluvial Facies