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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 MARI 53583

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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
450656122561701 MARI 53583 1 240 1110 TROUTDALE FORMATION Clay with some Sand --
450656122561701 MARI 53583 2 1110 1235 SENTINEL BLUFFS UNIT OF GRANDE RONDE BASALT Basalt --
450656122561701 MARI 53583 3 1235 1240 ELLENSBURG FORMATION Claystone --
450656122561701 MARI 53583 4 1240 1320 WINTER WATER UNIT OF GRANDE RONDE BASALT Basalt --
450656122561701 MARI 53583 5 1320 1490 UMTANUM UNIT OF GRANDE RONDE BASALT Basalt --
450656122561701 MARI 53583 6 1490 1491 ELLENSBURG FORMATION Claystone --
450656122561701 MARI 53583 7 1491 1585 ORTLEY UNIT OF GRANDE RONDE BASALT Basalt --
450656122561701 MARI 53583 8 1585 1600 ELLENSBURG FORMATION Claystone --
450656122561701 MARI 53583 9 1600 1670 WAPSHILLA RIDGE UNIT OF GRANDE RONDE BASALT Basalt --
450656122561701 MARI 53583 10 1670 -- MARINE ROCKS,OLDER Claystone --
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