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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 CLAC 14454

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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
451922122493101 CLAC 14454 1 0 10 COLUMBIA BASALT GROUP Clay --
451922122493101 CLAC 14454 2 10 19 COLUMBIA BASALT GROUP Silt and Clay --
451922122493101 CLAC 14454 3 19 36 COLUMBIA BASALT GROUP Claystone --
451922122493101 CLAC 14454 4 36 78 SENTINEL BLUFFS UNIT OF GRANDE RONDE BASALT Basalt --
451922122493101 CLAC 14454 5 78 119 WINTER WATER UNIT OF GRANDE RONDE BASALT Basalt FLOW 1
451922122493101 CLAC 14454 6 119 171 WINTER WATER UNIT OF GRANDE RONDE BASALT Basalt FLOW 2
451922122493101 CLAC 14454 7 171 300 WINTER WATER UNIT OF GRANDE RONDE BASALT Basalt FLOW 3
451922122493101 CLAC 14454 8 300 385 ORTLEY UNIT OF GRANDE RONDE BASALT Basalt --
451922122493101 CLAC 14454 9 385 440 ORTLEY UNIT OF GRANDE RONDE BASALT Basalt OR GROUSE CREEK
451922122493101 CLAC 14454 10 440 -- UMTANUM UNIT OF GRANDE RONDE BASALT Basalt OR GROUSE CREEK
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Page Last Modified: Wednesday, 09-Jan-2013 18:43:58 EST