Equilibrium profile - The long-term profile which the ocean bed is 

 assumed to conform to based on a particular wave climate and sediment 

 characteristics. 



Foreset - A type of bedding thicker than lamina produced by the 

 deposition of sediment on the downcurrent face of a bed form. 



Holocene - The Epoch from approximately 10,000 years before present 

 (ybp) to the present, which follows the continental glaciations of the 

 Pleistocene Epoch. 



Horizontal bedding - Bedding characterized by parallel beds graded at 

 any angle, usually resulting from flat bed sediment migration or the 

 migration of sediment where no bed forms occur. 



Hummocky cross stratification - Laminae which are both concave up 

 (swales) and convex up (hummocks) possessing many undulating erosion 

 surfaces, and dip into the swales at angles of approximately 15 deg. 



Inner shelf (inner continental shelf) - The inner part of the continental 

 shelf, also known as the shoreface, extending from the seaward edge of 

 the surf zone to the landward edge of outer continental shelf. This zone is 

 characterized by a normal, strong agitation of the seafloor bed by waves. 

 Slopes of this zone are on the order of 1:200. 



Lamina (pi. laminae) - The thinnest recognizable layer in a sediment or 

 sedimentary rock differing from other layers in color, composition, or 

 particle size. Commonly 0.05 to 1.00 mm thick. 



Outer continental shelf - The outer continental shelf, the landward limit 

 marking the depth of closure, is only periodically agitated by waves. 

 Slopes of this zone are on the order of 1:2,000. 



Palimpsest sediments - Reworked sediments of the continental shelf. 



Planar cross-bedding - Cross-bedding in which bounding surfaces 

 form more or less planar surfaces. These units are tabular or 

 wedge-shaped. 



Pleistocene Epoch - The Epoch characterized by continental 

 glaciations at North America from approximately 2 million years to 

 10,000 ybp. 



Profile envelope (active) - The range of vertical migration of the 

 profile due to coastal processes including waves and currents. 



Quaternary Period - The Period from approximately 2 million ybp lo 

 the recent (present) inclusive of the Pleistocene and Holocene Epochs). 



A2 



Appendix A Glossary 



