EAS100 Lecture Notes - Lecture 24: Continental Shelf, Photic Zone, Siliceous Ooze

• School: University of Alberta
• Department: Earth and Atmospheric Sciences
• Course: EAS100
• Professor: Korhan Ayranci

Document Summary

Surf and currents are inadequate to erode all new sediment. Size and shape reflect the balance between sedimentation and. Estuary : semi-enclosed marine embayment that is diluted with fresh water, normally entering it by one or more streams. Reefs (carbonate shorelines) and atolls carbonate-secreting organisms) level. In clear tropical seas, organisms build . Slow subsidence forces reef organisms to grow upward so that they can survive near sea. Fringing reef : attached to or borders the adjacent land. Barrier reef : separated from land by a lagoon. Atoll : roughly circular coral reef enclosing a shallow lagoon that forms when a tropical volcanic island with a fringing reef subsides. Coral reefs generate intense biologic productivity and diversity and are useful indicators of environmental change. Plants and animals living in the uppermost water of the ocean occupy the . Benthic organisms live on the bottom or within bottom sediment ( benthic zone)