Title

Depositional Environment of the Astoria Formation

Date

5-30-2013 9:00 AM

Location

Health and Wellness Center (HWC) Room 105

Department

Earth Science

Session Chair

Jeff Myers

Session Title

Earth Science Senior Seminar Research: Geological Hazards Impacting US 101 at Beverly Beach, Oregon, and their Mitigation

Faculty Sponsor(s)

Jeff Myers

Presentation Type

Presentation

Abstract

The shallow marine depositional environment of the Miocene aged Astoria Formation directly influences the occurrence of modern – day hazards, such as landslides, and debris falls plaguing HWY 101 near Beverly Beach, Oregon. Elevated sea levels plus continental subsidence resulted in a low energy, marine, depositional environment, resulting in the Astoria Formation. Today these poorly lithified sediments have proven unstable resulting in hazardous conditions for developers and motorists alike along HWY 101 near Beverly Beach, Oregon. Field work will focus on physical properties related to the depositional environment which influence the occurrence of hazards associated with the Astoria Formation today.

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May 30th, 9:00 AM

Depositional Environment of the Astoria Formation

Health and Wellness Center (HWC) Room 105

The shallow marine depositional environment of the Miocene aged Astoria Formation directly influences the occurrence of modern – day hazards, such as landslides, and debris falls plaguing HWY 101 near Beverly Beach, Oregon. Elevated sea levels plus continental subsidence resulted in a low energy, marine, depositional environment, resulting in the Astoria Formation. Today these poorly lithified sediments have proven unstable resulting in hazardous conditions for developers and motorists alike along HWY 101 near Beverly Beach, Oregon. Field work will focus on physical properties related to the depositional environment which influence the occurrence of hazards associated with the Astoria Formation today.