Stratigraphic Concepts

noun the general appearance or character of a rock formation

• The geologist carefully studied the different facies of rock formations in the area.
• She pointed out the different facies of the building, noting the various architectural styles.
• Check out the cool facies on that car, it's so sleek and stylish.
• The artist used a variety of colors and textures to create a facies of emotions in her painting.

noun a type of organic microfossil found in rocks dating from the Precambrian era

• The presence of acritarchs in the sedimentary rock indicates a marine environment during the time of deposition.
• I found some weird acritarch fossils while digging in my backyard.
• Those acritarchs look like tiny alien eggs!
• The acritarchs scattered throughout the painting added a mysterious and ancient feel to the artwork.