Preliminary map of offshore geology in the Protection Island-Point Partridge area, northern Puget Sound, Washington

Wagner, Holly Clyde; Wiley, Mark

doi:10.3133/ofr80548

Cited by 4 publications

(8 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The Whidbey #1 well and the Birch Bay #1 well in the Canadian border region indicate a generally NNE-directed Snmax* consistent with mapped geologic structures (Wagner and Wiley, 1980;Gower and others, 1985;Easterbrook, 1976). However, two wells directly south of the Whidbey #1 well give contrasting results.…”

Section: Puget Sound Basinsupporting

confidence: 63%

“…This well is located on the northern, down-dropped side of the inferred WNW-trending southern Whidbey Island fault. Although the actual fault trace and sense of slip are poorly constrained, possible offset Holocene marine sediments have been interpreted from seismic reflection profiles near its northwestern termination (Wagner and Wiley, 1980;Gower and others, 1985). Drilled to a total depth of 2.04 km, a large portion of the well is washed out.…”

Section: Puget Sound Basinmentioning

confidence: 99%

See 1 more Smart Citation

Wellbore breakout analysis for determining tectonic stress orientations in Washington State

Magee¹,

Zoback²

1992

Open-File Report

View full text Add to dashboard Cite

This report presents the results from a detailed analysis of wellbore breakouts from petroleum exploration well logs in the state of Washington. Principal horizontal stress directions are inferred from the measured azimuths of borehole breakouts and are used to place constraints on the style of faulting and regional deformation within the state. Our results indicate mean maximum horizontal stress directions (Snmax) of about N20°E near the south-central Washington coast, N5°-10°E within the Puget Sound, and approximately NW on the Olympic peninsula. These stress data are consistent with horizontal stress directions inferred from earthquake focal mechanisms in the Puget Sound basin (Ma and others, 1991) and with directions inferred from mapped cinder cone alignments in the Cascade Range of Washington and Oregon (Magee, in prep.), but are inconsistent with geodetic data in the Puget Sound basin and the Olympic Peninsula which indicate ENE maximum horizontal strain accumulation (Savage and others, 1991). Enigmatically, the breakout orientations observed in several wells appear to be dominated by local stresses in the vicinity of actively deforming folds or faults.

show abstract

Section: Puget Sound Basinsupporting

confidence: 63%

Section: Puget Sound Basinmentioning

confidence: 99%

Wellbore breakout analysis for determining tectonic stress orientations in Washington State

Magee¹,

Zoback²

1992

Open-File Report

View full text Add to dashboard Cite

show abstract

“…Although numerous single-channel marine seismic-reflection surveys have been conducted in Puget Sound with good near-surface results (Sylwester, 1971;Wagner and Wiley, 1980), the depth of penetration below water bottom has been limited due to high-frequency attenuation and low-power sources. Therefore, a multichannel system was used for deeper penetration in an effort to augment previous single-channel surveys.…”

Section: Preliminary Evidence Of Possible Quaternary Faulting Inmentioning

confidence: 99%

“…The Admiralty Inlet fault as mapped by Gower and others (1985) shows a fault extending northwest but not extending into Admiralty Inlet. However, Wagner andWiley (1980, 1983) do extend this fault northwest through the inlet. Lines 10B and 11 (shown on fig.…”

Section: Admiralty Inlet Faultmentioning

confidence: 99%

“…Although a fault may exist here, its sense of motion is different than indicated by Gower and others (1985). Wagner andWiley (1980, 1983) show the extension of the fault to be down-to-the-west at the north end and down-tothe-east at the south end of the extension of this fault (Gower and others, 1985). Other faults are present in the Strait of Juan de Fuca and have been mapped by Macleod and others (1977).…”

Section: Admiralty Inlet Faultmentioning

confidence: 99%

See 1 more Smart Citation

Proceedings of Conference XLII; a workshop on Evaluation of earthquake hazards and risk in the Puget Sound and Portland areas

Kitzmiller¹

1988

Open-File Report

View full text Add to dashboard Cite

This report is preliminary and has not been edited or reviewed for conformity with U.S. Geological Survey publication standards and stratigraphic nomenclature. The views and conclusions contained in this document are those of the authors and should not be interpreted as necessarily representing the official policies, either expressed or implied, of the United States Government. Any use of trade names and trademarks in this publication is for descriptive purposes only and does not constitute endorsement by the U.S. Geological Survey.

show abstract

Bedrock geologic and Quaternary tectonic map of the Port Townsend area, Washington

Gower¹

1980

Open-File Report

View full text Add to dashboard Cite

Preliminary map of offshore geology in the Protection Island-Point Partridge area, northern Puget Sound, Washington

Cited by 4 publications

References 4 publications

Wellbore breakout analysis for determining tectonic stress orientations in Washington State

Wellbore breakout analysis for determining tectonic stress orientations in Washington State

Proceedings of Conference XLII; a workshop on Evaluation of earthquake hazards and risk in the Puget Sound and Portland areas

Bedrock geologic and Quaternary tectonic map of the Port Townsend area, Washington

Contact Info

Product

Resources

About