Calcareous describes something composed primarily of, or containing a significant amount of calcium carbonate, especially as found in chalk, limestone, or shells. This typically results in a hard, brittle, and often white or light-colored material. The presence of calcium carbonate is often due to biological processes, such as the secretion of shells by marine organisms, or geological processes, such as the accumulation of skeletal remains. Materials described as calcareous are frequently susceptible to dissolution by acids. This means they might react with acidic substances, producing carbon dioxide and releasing calcium ions.
Calcareous meaning with examples
- The paleontologist carefully examined the calcareous fossils, meticulously noting their intricate details. He marveled at the preservation of the ancient shells, each a testament to life in the prehistoric ocean. The calcareous nature of the fossilized remains offered insights into the prevailing environmental conditions during their formation. The fossil's composition helped the paleontologist understand the ancient ecosystems, and provide clues to their history.
- The coastal cliffs were composed of a significant layer of calcareous rock, slowly eroding due to the constant impact of the ocean. This erosion contributed to the formation of a unique coastal landscape. The calcareous composition meant that rain and waves, with their slightly acidic contents, slowly weathered the cliffs, creating caves. The distinctive texture and color of the rock helped to highlight the geological history of the region.
- The farmer tested the soil and determined it was highly calcareous, which was ideal for certain types of crops, like grapes, and some fruits. The presence of calcium carbonate in the soil affected its pH level. The farmer knew the high calcium content was beneficial, as it made the soil drain well. The farmer also knew to avoid using fertilizers containing acid because of how the soil would react.
- The intricate coral reefs, teeming with marine life, were a stunning spectacle of calcareous structures. The coral polyps secreted a calcareous skeleton that formed the framework of the reef. The color variations in the coral demonstrated the health of the surrounding environment. The delicate ecosystems of the reefs were increasingly threatened by ocean acidification that impacts calcareous organisms.
Calcareous Synonyms
calcareous calcitic chalky limyCalcareous Antonyms
acidic non-calcareous siliceousCalcareous Crossword Answers
6 Letters
CHALKY