Calcareous oozes of the open ocean are associated with midocean ridge and rise systems rather than the deep-ocean basin floor.

Question

Quizplus · Accepted Answer

Calcareous oozes are formed from the accumulation of calcium carbonate shells of microscopic marine organisms such as foraminifera and coccolithophores. These organisms thrive in warm, shallow waters that are well-lit for their photosynthetic needs. Mid-ocean ridge and rise systems are associated with hydrothermal vent systems where warm fluids with high mineral content support the growth of these organisms. Thus, calcareous oozes tend to be more abundant in these regions compared to the deep-ocean basin floor, which is a more nutrient-poor environment.

Calcareous Oozes of the Open Ocean Are Associated with Midocean