Abstract

Subsurface Miocene sedimentary rocks have been recognized in the Whatcom basin of southwestern British Columbia and northwestern Washington in two deep exploratory wells using palynological techniques.

The flora is characteristic of a warm temperate to temperate climate and probably represents three basic assemblages: (1) warm temperate, probably growing on the basin lowland, (2) temperate, probably growing on uplands on the basin margins, and (3) a much smaller assemblage characteristic of somewhat higher elevations and, therefore, probably well back from the basin margins.

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