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Columbia River Basalt Stratigraphy in Oregon

In Cooperation with the Oregon Water Resources Department (OWRD)

Table of Geologic Units for Site MULT 72561

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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
452649122092501 MULT 72561 1 0 5 QUATERNARY ALLUVIUM Boulders --
452649122092501 MULT 72561 2 5 10 VOLCANIC PYROCLASTIC AND SEDIMENTARY ROCKS Gravel VOLCANIC DEBRIS
452649122092501 MULT 72561 3 10 31 VOLCANIC PYROCLASTIC AND SEDIMENTARY ROCKS Gravel, Silt, and Clay FLUVIAL CLASTS & VOLCANIC DEBRIS
452649122092501 MULT 72561 4 31 38 BASALT OF SAND HOLLOW OF FRENCHMAN SPRINGS MEMBER OF WANAPUM BA Boulders --
452649122092501 MULT 72561 5 38 65 BASALT OF GINKGO OF FRENCHMAN SPRINGS MEMBER OF WANAPUM BASALT Basalt OR SAND HOLLOW
452649122092501 MULT 72561 6 65 110 BASALT OF GINKGO OF FRENCHMAN SPRINGS MEMBER OF WANAPUM BASALT Basalt --
452649122092501 MULT 72561 7 110 113 VANTAGE MEMBER (INFORMAL USAGE) OF ELLENSBURG FORMATION Sedimntry(undf) --
452649122092501 MULT 72561 8 113 160 SENTINEL BLUFFS UNIT OF GRANDE RONDE BASALT Basalt FLOW 1
452649122092501 MULT 72561 9 160 308 SENTINEL BLUFFS UNIT OF GRANDE RONDE BASALT Basalt FLOW 2
452649122092501 MULT 72561 10 308 310 ELLENSBURG FORMATION Sedimntry(undf) --
452649122092501 MULT 72561 11 310 525 WINTER WATER UNIT OF GRANDE RONDE BASALT Basalt --
452649122092501 MULT 72561 12 525 528 ELLENSBURG FORMATION Claystone --
452649122092501 MULT 72561 13 528 578 ORTLEY UNIT OF GRANDE RONDE BASALT Basalt FLOW 1
452649122092501 MULT 72561 14 578 582 ELLENSBURG FORMATION Silt --
452649122092501 MULT 72561 15 582 642 ORTLEY UNIT OF GRANDE RONDE BASALT Basalt FLOW 2
452649122092501 MULT 72561 16 642 -- ORTLEY UNIT OF GRANDE RONDE BASALT Basalt FLOW 3
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Page Last Modified: Wednesday, 09-Jan-2013 18:46:44 EST