Link to USGS home page.
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 WASC 50312

Skip to data

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
453208121054901 WASC 50312 1 0 91 DALLES GROUP Sandstone --
453208121054901 WASC 50312 2 91 160 BASALT OF ROSALIA OF PRIEST RAPIDS MEMBER OF WANAPUM BASALT Basalt --
453208121054901 WASC 50312 3 160 243 BASALT OF SENTINEL GAP OF FRENCHMAN SPRINGS MEMBER OF WANAPUM B Basalt --
453208121054901 WASC 50312 4 243 276 BASALT OF SAND HOLLOW OF FRENCHMAN SPRINGS MEMBER OF WANAPUM BA Basalt FLOW 1
453208121054901 WASC 50312 5 276 330 BASALT OF SAND HOLLOW OF FRENCHMAN SPRINGS MEMBER OF WANAPUM BA Basalt FLOW 2
453208121054901 WASC 50312 6 330 530 BASALT OF SAND HOLLOW OF FRENCHMAN SPRINGS MEMBER OF WANAPUM BA Basalt FLOW 3 W/ PILLOWS
453208121054901 WASC 50312 7 530 669 BASALT OF GINKGO OF FRENCHMAN SPRINGS MEMBER OF WANAPUM BASALT Basalt WITH PILLOW BASALT
453208121054901 WASC 50312 8 669 671 ELLENSBURG FORMATION Sedimntry(undf) --
453208121054901 WASC 50312 9 671 829 SENTINEL BLUFFS UNIT OF GRANDE RONDE BASALT Basalt FLOW 1
453208121054901 WASC 50312 10 829 1066 SENTINEL BLUFFS UNIT OF GRANDE RONDE BASALT Basalt FLOW 2
453208121054901 WASC 50312 11 1066 1138 SENTINEL BLUFFS UNIT OF GRANDE RONDE BASALT Basalt FLOW 3 WITH PILLOW BASALT
453208121054901 WASC 50312 12 1138 -- ELLENSBURG FORMATION Clay --
Columbia River Basalt Group Stratigraphy Home Page
Oregon Water Science Center Studies Page
Oregon Water Science Center Home Page

Accessibility FOIA Privacy Policies and Notices

USA.gov logo U.S. Department of the Interior | U.S. Geological Survey
URL: https://or.water.usgs.gov/projs_dir/crbg/data/wells/wasc_50312/wasc_50312_geol.html
Page Contact Information: Oregon Webteam
Page Last Modified: Wednesday, 09-Jan-2013 18:51:08 EST