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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 UMAT 6283

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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
455706118251601 UMAT 6283 1 0 389 QUATERNARY ALLUVIUM Sand, Gravel, and Clay --
455706118251601 UMAT 6283 2 389 420 ICE HARBOR MEMBER OF SADDLE MOUNTAINS BASALT Basalt --
455706118251601 UMAT 6283 3 420 445 ELLENSBURG FORMATION Clay --
455706118251601 UMAT 6283 4 445 520 UMATILLA MEMBER OF SADDLE MOUNTAINS BASALT Basalt FLOW 1
455706118251601 UMAT 6283 5 520 577 UMATILLA MEMBER OF SADDLE MOUNTAINS BASALT Basalt FLOW 2
455706118251601 UMAT 6283 6 577 585 MABTON MEMBER (INFORMAL USAGE) OF ELLENSBURG FORMATION Claystone --
455706118251601 UMAT 6283 7 585 745 BASALT OF SENTINEL GAP OF FRENCHMAN SPRINGS MEMBER OF WANAPUM B Basalt --
455706118251601 UMAT 6283 8 745 840 BASALT OF SILVER FALLS OF FRENCHMAN SPRINGS MEMBER OF WANAPUM B Basalt FLOW 1
455706118251601 UMAT 6283 9 840 919 BASALT OF SILVER FALLS OF FRENCHMAN SPRINGS MEMBER OF WANAPUM B Basalt FLOW 2
455706118251601 UMAT 6283 10 919 921 ELLENSBURG FORMATION Claystone --
455706118251601 UMAT 6283 11 921 -- BASALT OF SILVER FALLS OF FRENCHMAN SPRINGS MEMBER OF WANAPUM B Basalt FLOW 3
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Page Last Modified: Wednesday, 09-Jan-2013 18:48:04 EST