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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 MARI 53584

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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
451110122470301 MARI 53584 1 0 90 WILLAMETTE SILT Silt --
451110122470301 MARI 53584 2 90 1296 TROUTDALE FORMATION Claystone --
451110122470301 MARI 53584 3 1296 1351 BASALT OF GINKGO OF FRENCHMAN SPRINGS MEMBER OF WANAPUM BASALT Basalt --
451110122470301 MARI 53584 4 1351 1354 VANTAGE MEMBER (INFORMAL USAGE) OF ELLENSBURG FORMATION Clay --
451110122470301 MARI 53584 5 1354 1426 SENTINEL BLUFFS UNIT OF GRANDE RONDE BASALT Basalt FLOW 1
451110122470301 MARI 53584 6 1426 1427 ELLENSBURG FORMATION Claystone --
451110122470301 MARI 53584 7 1427 1510 WINTER WATER UNIT OF GRANDE RONDE BASALT Basalt FLOW 1
451110122470301 MARI 53584 8 1510 1590 WINTER WATER UNIT OF GRANDE RONDE BASALT Basalt FLOW 2
451110122470301 MARI 53584 9 1590 1690 ORTLEY UNIT OF GRANDE RONDE BASALT Basalt FLOW 1
451110122470301 MARI 53584 10 1690 1765 ORTLEY UNIT OF GRANDE RONDE BASALT Basalt FLOW 2
451110122470301 MARI 53584 11 1765 1780 ELLENSBURG FORMATION Siltstone --
451110122470301 MARI 53584 12 1780 1850 GROUSE CREEK UNIT OF GRANDE RONDE BASALT Basalt FLOW 1
451110122470301 MARI 53584 13 1850 1890 GROUSE CREEK UNIT OF GRANDE RONDE BASALT Basalt FLOW 2
451110122470301 MARI 53584 14 1890 1924 ELLENSBURG FORMATION Claystone --
451110122470301 MARI 53584 15 1924 1990 GROUSE CREEK UNIT OF GRANDE RONDE BASALT Basalt FLOW 3
451110122470301 MARI 53584 16 1990 2094 WAPSHILLA RIDGE UNIT OF GRANDE RONDE BASALT Basalt FLOW 1
451110122470301 MARI 53584 17 2094 2220 WAPSHILLA RIDGE UNIT OF GRANDE RONDE BASALT Basalt FLOW 2
451110122470301 MARI 53584 18 2220 -- MARINE ROCKS,OLDER Sedimntry(undf) --
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Page Last Modified: Wednesday, 09-Jan-2013 18:45:09 EST