The outer surface of a flint concretion at the interface with the sedimentary rock. Background texture.
Keywords
concretion,
white,
geology,
background,
texture,
cracked,
pattern,
mineralogy,
stone,
eroded,
nodule,
geologic,
material,
closeup,
macro,
mineral,
rock,
scratch,
fractured,
grunge,
surface,
sedimentary,
flint,
creamy