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Oregon Water Science Center

Columbia River Basalt Stratigraphy in Oregon

In Cooperation with the Oregon Water Resources Department (OWRD)

Table of Geologic Units for Site WASH 55816

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USGS Site ID: Site identification number permanently assigned to the well by the U.S. Geological Survey and recorded in National Water Information System (NWIS), a national computer database maintained by U.S. Geological Survey.

Sequence Number: Sequence number assigned to identify a record.

Depth to Top of Interval: The depth to the top of this unit, in feet below land surface.

Depth to Bottom of Interval: The depth to the bottom of this unit, in feet below land surface. This field should be specified for all units, except the last one in the hole.

Unit code: The name of aquifer or geologic unit stored by the U.S. Geological Survey in National Water Information System (NWIS), a national computer database maintained by U.S. Geological Survey.

Lithology code: The principal lithology of this unit stored by the U.S. Geological Survey in National Water Information System (NWIS), a national computer database maintained by U.S. Geological Survey.

Description of material: The adjective modifier to describe the rock type.

--, no data/unknown.

USGS Site ID Well Log ID Sequence Number Depth to Top of Interval Depth to Bottom of Interval Unit code Lithology code Description of material
452544122504201 WASH 55816 1 0 10 WILLAMETTE SILT Silt and Clay --
452544122504201 WASH 55816 2 10 48 SENTINEL BLUFFS UNIT OF GRANDE RONDE BASALT Basalt FLOW 1
452544122504201 WASH 55816 3 48 130 SENTINEL BLUFFS UNIT OF GRANDE RONDE BASALT Basalt FLOW 2
452544122504201 WASH 55816 4 130 131 ELLENSBURG FORMATION Sedimntry(undf) --
452544122504201 WASH 55816 5 131 205 WINTER WATER UNIT OF GRANDE RONDE BASALT Basalt FLOW 1
452544122504201 WASH 55816 6 205 306 WINTER WATER UNIT OF GRANDE RONDE BASALT Basalt FLOW 2
452544122504201 WASH 55816 7 306 419 ORTLEY UNIT OF GRANDE RONDE BASALT Basalt --
452544122504201 WASH 55816 8 419 420 ELLENSBURG FORMATION Sedimntry(undf) --
452544122504201 WASH 55816 9 420 455 GROUSE CREEK UNIT OF GRANDE RONDE BASALT Basalt FLOW 1
452544122504201 WASH 55816 10 455 508 GROUSE CREEK UNIT OF GRANDE RONDE BASALT Basalt FLOW 2
452544122504201 WASH 55816 11 508 516 ELLENSBURG FORMATION Claystone --
452544122504201 WASH 55816 12 516 659 WAPSHILLA RIDGE UNIT OF GRANDE RONDE BASALT Basalt FLOW 1
452544122504201 WASH 55816 13 659 818 WAPSHILLA RIDGE UNIT OF GRANDE RONDE BASALT Basalt FLOW 2
452544122504201 WASH 55816 14 818 904 WAPSHILLA RIDGE UNIT OF GRANDE RONDE BASALT Basalt FLOW 3
452544122504201 WASH 55816 15 904 905 ELLENSBURG FORMATION Sedimntry(undf) --
452544122504201 WASH 55816 16 905 973 WAPSHILLA RIDGE UNIT OF GRANDE RONDE BASALT Basalt FLOW 4
452544122504201 WASH 55816 17 973 -- GRANDE RONDE BASALT OF YAKIMA Basalt CHINA CREEK FLOW
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Page Last Modified: Wednesday, 09-Jan-2013 18:53:17 EST