The delineation of landslides in the Lincoln County, Oregon Coastal Zone Public Deposited

http://ir.library.oregonstate.edu/concern/defaults/x633f459t

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • A study conducted along the Lincoln County, Oregon coast delineated the exact location of 153 landslides. The landslides were found through the interpretation of aerial photographs. Each landslide was verified in the field and its class (ancient, historic, recent), type (slump, debris slide or flow, planar slide),, and status (stable, potential, active) was determined. Each slide was numbered and mapped at scales of 1:4800 and 1:62500. The study area was divided into seven homogeneous reaches based on lithologic and morphologic differences. The number of slides occurring in the differing geologic units was then analyzed. It was found that most landslides occur in conjunction with silt stone materials of Tertiary age. Areas with similar morphology but of sandstone materials are less likely to have landslides. Structurally, landslides occur in areas with steeply dipping Tertiary bedding planes or in areas with steep slopes such as river valleys. A large portion of the landslides in the study area occur at contact zones between Tertiary and Quaternary materials. Most of these slides are ancient, stable slides and are larger than other slides in the study area. The only active ancient landslides in the coastal zone take place in the Nye mudstones near Beverly Beach State Park. Those slides in the study area classed as historic and recent are predominantly active or likely to become active in the near future. Only 11 of these slides remain stable. Landslides will continue to be a geologic hazard in Lincoln County, Oregon. However, knowledge of landslide location, lithology and morphology will reduce their impacts.
Resource Type
Date Available
Date Issued
Non-Academic Affiliation
Subject
Rights Statement
Peer Reviewed
Language
File Format
File Extent
  • 572601 bytes
Digitization Specifications
  • Master files scanned at 600 ppi (256 Grayscale) using Capture Perfect 3.0 on a Canon DR-9080C in TIF format. PDF derivative scanned at 300 ppi (256 B&W), using Capture Perfect 3.0, on a Canon DR-9080C. CVista PdfCompressor 3.1 was used for pdf compression and textual OCR.
Replaces
Additional Information
  • description.provenance : Submitted by Anna Opoien (aoscanner@gmail.com) on 2007-12-20T19:14:13Z No. of bitstreams: 1 Delineation_Landslide.pdf: 572601 bytes, checksum: 950037b148e4b0d3525560fff1c0d99f (MD5)
  • description.provenance : Made available in DSpace on 2007-12-20T22:17:42Z (GMT). No. of bitstreams: 1 Delineation_Landslide.pdf: 572601 bytes, checksum: 950037b148e4b0d3525560fff1c0d99f (MD5)
  • description.provenance : Approved for entry into archive by Sue Kunda(sue.kunda@oregonstate.edu) on 2007-12-20T22:17:41Z (GMT) No. of bitstreams: 1 Delineation_Landslide.pdf: 572601 bytes, checksum: 950037b148e4b0d3525560fff1c0d99f (MD5)
  • description.provenance : Approved for entry into archive by Digital Production(digitalproduc@gmail.com) on 2007-12-20T22:16:33Z (GMT) No. of bitstreams: 1 Delineation_Landslide.pdf: 572601 bytes, checksum: 950037b148e4b0d3525560fff1c0d99f (MD5)

Relationships

In Administrative Set:
Last modified: 09/25/2017

Downloadable Content

Download PDF
Citations:

EndNote | Zotero | Mendeley

Items