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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 MORR 1526

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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
455048119400701 MORR 1526 1 0 20 SAND AND GRAVEL OF MISSOULA FLOOD DEPOSITS Gravel, Sand, and Clay --
455048119400701 MORR 1526 2 20 60 ALKALI CANYON FORMATION OF DALLES GROUP Conglomerate --
455048119400701 MORR 1526 3 60 90 ELEPHANT MOUNTAIN MEMBER OF SADDLE MOUNTAINS BASALT Basalt --
455048119400701 MORR 1526 4 90 120 RATTLESNAKE RIDGE MEMBER (INFORMAL USAGE) OF ELLENSBURG FORMATI Sandstone --
455048119400701 MORR 1526 5 120 270 POMONA MEMBER OF SADDLE MOUNTAINS BASALT Basalt --
455048119400701 MORR 1526 6 270 345 SELAH MEMBER (INFORMAL USAGE) OF ELLENSBURG FORMATION Sandstone --
455048119400701 MORR 1526 7 345 500 UMATILLA MEMBER OF SADDLE MOUNTAINS BASALT Basalt --
455048119400701 MORR 1526 8 500 555 MABTON MEMBER (INFORMAL USAGE) OF ELLENSBURG FORMATION Claystone --
455048119400701 MORR 1526 9 555 650 BASALT OF LOLO OF PRIEST RAPIDS MEMBER OF WANAPUM BASALT Basalt --
455048119400701 MORR 1526 10 650 675 SQUAW CREEK DIATOMITE BED OF ELLENSBURG FORMATION Siltstone --
455048119400701 MORR 1526 11 675 830 BASALT OF SENTINEL GAP OF FRENCHMAN SPRINGS MEMBER OF WANAPUM B Basalt FLOW 1
455048119400701 MORR 1526 12 830 -- BASALT OF SENTINEL GAP OF FRENCHMAN SPRINGS MEMBER OF WANAPUM B Basalt FLOW 2
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Page Last Modified: Wednesday, 09-Jan-2013 18:45:52 EST