Snoqualmie Batholith- Shoreline — Thumbnail History (historylink.org)
The City of Shoreline is one of Seattle’s closest suburbs. Located immediately north of Seattle’s city limits, the area was settled first by homesteaders and soon after by vacationers. Over time a community formed, and although Seattle’s boundaries have pushed farther north, Shoreline has preserved its autonomy and, in the 1990s, incorporated as a city in its own right.
- Batholith (Wikipedia)
A batholith (from Ancient Greek bathos ‘depth’ and lithos ‘rock’) is a large mass of intrusive igneous rock (also called plutonic rock), larger than 100 km2 (40 sq mi) in area, that forms from cooled magma deep in the Earth’s crust. Batholiths are almost always made mostly of felsic or intermediate rock types, such as granite, quartz monzonite, or diorite (see also granite dome).