An obsolete term found in older geological writings.
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Ebey’s Landing National Historical Reserve (Whidbey Island) (historylink.org)Ebey’s Landing National Historical Reserve is unique – the first, and as of 2023 only, national historical reserve in the United States. Established in 1978 by the National Parks and Recreation Act (NPRA), the Reserve’s mission is to preserve, protect, manage, and interpret much of Central Whidbey Island, from the historic town of Coupeville in the east to pioneers Isaac and Rebecca Ebey’s 1850 donation claim to the west. The Reserve initially encompassed only the 8,000-acre Central Whidbey Historical District, which had been placed on the National Register of Historic Places (NHRP) in December 1973. The historical district and the Reserve were later enlarged to 17,572 acres – 13,617 acres of land and 3,955 surface acres of the waters of Penn Cove. The Reserve includes woodlands, open prairies, wetlands, shorelines, sloping uplands, dozens of historic structures, and the entire town of Coupeville. It is administered by a Trust Board of nine individuals – three representing the town of Coupeville, four representing Island County, and one each from the Washington State Parks and Recreation Commission and the National Park Service (NPS). Eighty-five percent of the land within the Reserve is privately owned, and a process of consultation, cooperation, and compromise to harmonize often-competing interests has been key to its success.
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Geologic Map of the East Half of the Bellevue South 7.5’ x 15’ Quadrangle, Issaquah Area, King County, WashingtonThe Issaquah area includes several of the most outstanding geologic features of the eastern Puget Lowland region. Folds have warped thousands of meters of Tertiary sedimentary and volcanic rocks. Several hundred meters of both glacial and postglacial sediment have accumulated in a deep glacial trough, which is now partly occupied by Lake Sammamish but which was previously the conduit for massive volumes of meltwater during ice-sheet occupation and retreat. The eastern projection of an east-west-oriented crustal structure, which reflects Tertiary through Holocene fault displacement, extends across the eastern part of the map area.
Preliminary Report on the Geology of Southern Snohomish County (PDF)The map area includes eighty-five square miles in South Snohomish County southeast of Everett, bounded on the west by Interstate 5, on the south by Highway 405 and the Snohomish-King County boundary, on the east and north by the Snohomish River floodplain.
Tertiary (Wikipedia)Tertiary (/ˈtɜːr.ʃə.ri, ˈtɜːr.ʃiˌɛr.i/ TUR-shə-ree, TUR-shee-err-ee) is an obsolete term for the geologic period from 66 million to 2.6 million years ago. The period began with the demise of the non-avian dinosaurs in the Cretaceous–Paleogene extinction event, at the start of the Cenozoic Era, and extended to the beginning of the Quaternary glaciation at the end of the Pliocene Epoch. The time span covered by the Tertiary has no exact equivalent in the current geologic time system, but it is essentially the merged Paleogene and Neogene periods, which are informally called the Early Tertiary and the Late Tertiary, respectively.