Diffuser Oil Refill

chalk is a naturally porous sedimentary rock which forms from the slow build up of cal- cite plates (coccoliths) which are shed from tiny organisms called coccolithophores. these tiny coccolithophores have been producing coccoliths for millennia and are still present today, creating a sediment base that will one day be compressed into becoming more chalk. chalk cliffs, reefs and formations are found all around the Kent coast line, local to the Haeckels lab, and are commonly found in the form of cliffs due to having greater resistance to weathering and erosion than surrounding clay deposits; therefore chalk can be commonly found as cliffs or rising hills known as downlands.