The Ocean FloorThe Ocean Floor

The Ocean FloorThe Ocean Floor

Divided into two parts:Divided into two parts: Continental marginContinental margin Deep Ocean BasinDeep Ocean Basin

Continental crust comprises Continental crust comprises continental margincontinental margin

Deep ocean basin is comprised of Deep ocean basin is comprised of oceanic crustoceanic crust

Continental MarginContinental Margin Continental ShelfContinental Shelf

Begins at shoreline and ends at Begins at shoreline and ends at the slopethe slope

Depth can reach up to 200 MDepth can reach up to 200 M Continental SlopeContinental Slope

Begins at shelf and extends to Begins at shelf and extends to ocean floorocean floor

Ranges from 200 to 4,000 MRanges from 200 to 4,000 M

Deep-ocean BasinDeep-ocean Basin Abyssal PlainAbyssal Plain

Broad flat portion of the ocean floorBroad flat portion of the ocean floor Average depth is 4,000Average depth is 4,000 Deepest point in the ocean is the Deepest point in the ocean is the

Mariana Trench located in the Pacific Mariana Trench located in the Pacific ocean: 11,033 metersocean: 11,033 meters

Ridges and rift valleys formed at Ridges and rift valleys formed at divergent boundariesdivergent boundaries

Trenches formed at convergent Trenches formed at convergent boundariesboundaries

Features of the Ocean Features of the Ocean FloorFloor

Features of the Ocean Features of the Ocean FloorFloor

A= Continental SlopeA= Continental Slope B= SeamountsB= Seamounts C= Abyssal PlainC= Abyssal Plain D= Mid-Ocean Ridge (Divergent)D= Mid-Ocean Ridge (Divergent) E= Volcanic IslandE= Volcanic Island F= Continental ShelfF= Continental Shelf G= Deep Ocean trench (Convergent)G= Deep Ocean trench (Convergent)

Mapping the ocean floorMapping the ocean floor

Mapping ocean floor