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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 54800

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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
452646122092301 CLAC 54800 1 0 20 QUATERNARY ALLUVIUM Boulders --
452646122092301 CLAC 54800 2 20 59 BASALT OF GINKGO OF FRENCHMAN SPRINGS MEMBER OF WANAPUM BASALT Basalt OUTCROP
452646122092301 CLAC 54800 3 59 65 BASALT OF GINKGO OF FRENCHMAN SPRINGS MEMBER OF WANAPUM BASALT Basalt FLOW TOP
452646122092301 CLAC 54800 4 65 89 BASALT OF GINKGO OF FRENCHMAN SPRINGS MEMBER OF WANAPUM BASALT Basalt --
452646122092301 CLAC 54800 5 89 96 BASALT OF GINKGO OF FRENCHMAN SPRINGS MEMBER OF WANAPUM BASALT Basalt GINKGO PILLOWS
452646122092301 CLAC 54800 6 96 99 VANTAGE MEMBER (INFORMAL USAGE) OF ELLENSBURG FORMATION Siltstone --
452646122092301 CLAC 54800 7 99 125 SENTINEL BLUFFS UNIT OF GRANDE RONDE BASALT Basalt FLOW TOP, FLOW 1
452646122092301 CLAC 54800 8 125 151 SENTINEL BLUFFS UNIT OF GRANDE RONDE BASALT Basalt FLOW 1
452646122092301 CLAC 54800 9 151 154 ELLENSBURG FORMATION Sedimntry(undf) --
452646122092301 CLAC 54800 10 154 176 SENTINEL BLUFFS UNIT OF GRANDE RONDE BASALT Basalt FLOW TOP, FLOW 2
452646122092301 CLAC 54800 11 176 300 SENTINEL BLUFFS UNIT OF GRANDE RONDE BASALT Basalt FLOW 2
452646122092301 CLAC 54800 12 300 320 WINTER WATER UNIT OF GRANDE RONDE BASALT Basalt FLOW TOP, FLOW 1
452646122092301 CLAC 54800 13 320 347 WINTER WATER UNIT OF GRANDE RONDE BASALT Basalt FLOW 1
452646122092301 CLAC 54800 14 347 354 WINTER WATER UNIT OF GRANDE RONDE BASALT Basalt FAULT ZONE
452646122092301 CLAC 54800 15 354 496 WINTER WATER UNIT OF GRANDE RONDE BASALT Basalt FLOW 2
452646122092301 CLAC 54800 16 496 509 WINTER WATER UNIT OF GRANDE RONDE BASALT Basalt PILLOWS
452646122092301 CLAC 54800 17 509 519 ORTLEY UNIT OF GRANDE RONDE BASALT Basalt FLOW TOP, FLOW 1
452646122092301 CLAC 54800 18 519 557 ORTLEY UNIT OF GRANDE RONDE BASALT Basalt FLOW 1
452646122092301 CLAC 54800 19 557 570 ORTLEY UNIT OF GRANDE RONDE BASALT Basalt FLOW TOP, FLOW 2
452646122092301 CLAC 54800 20 570 574 ORTLEY UNIT OF GRANDE RONDE BASALT Basalt FLOW 2
452646122092301 CLAC 54800 21 574 580 ORTLEY UNIT OF GRANDE RONDE BASALT Basalt FLOW TOP, FLOW 3
452646122092301 CLAC 54800 22 580 -- ORTLEY UNIT OF GRANDE RONDE BASALT Basalt FLOW 3
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Page Last Modified: Wednesday, 09-Jan-2013 18:44:22 EST