- Intrusive rock is formed when magma penetrates existing rock, crystallizes, and solidifies underground to form intrusions, such as batholiths, dikes, sills, laccoliths, and volcanic necks.
- Extrusive rock (Wikipedia)
Extrusive rock refers to the mode of igneous volcanic rock formation in which hot magma from inside the Earth flows out (extrudes) onto the surface as lava or explodes violently into the atmosphere to fall back as pyroclastics or tuff. In contrast, intrusive rock refers to rocks formed by magma which cools below the surface.
- Salmon Bay (Wikipedia)
Salmon Bay (Lushootseed: šilšul) is a portion of the Lake Washington Ship Canal, which passes through the city of Seattle, linking Lake Washington to Puget Sound, lying west of the Fremont Cut. It is the westernmost section of the canal and empties into Puget Sound’s Shilshole Bay. Because of the Hiram M. Chittenden Locks, the smaller, western half of the bay is salt water, and the eastern half is fresh water (though not without saline contamination: see Lake Union).