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This is a Non-Federal dataset covered by different Terms of Use than Data.gov.

Tectonic controls on marine terrace origin and character in the Lituya Bay area, eastern Gulf of Alaska

Metadata Updated: July 5, 2023

Tectonic controls on marine terrace origin and character in the Lituya Bay area, eastern Gulf of Alaska, Report of Investigation 2022-4, presents radiocarbon data collected from deformed terraces along 65 km of the coast between Fairweather Glacier and Icy Point in the Lituya Bay area of the eastern Gulf of Alaska. From Fairweather Glacier to Lituya Bay one prominent terrace flanks the coastal mountain front, and isolated remnants of a lower, younger terrace occur landward of a wide prograded coastal plain. From Lituya Bay to Crillon River a sequence of five well-developed terraces bevel the coastal foothills. From Finger Glacier to Icy Point four terraces and the possible remnants of a fifth occur. The terraces form an arch with an axis of maximum uplift near La Perouse Glacier. The deformation is progressively greater in the older terraces and shoreline angle relief on the highest terrace is 100 m or more. The terraces are of Pleistocene and Holocene age. The oldest terrace studied is not well dated but the next oldest may have formed during the post-Wisconsin sea level rise. The three Holocene terraces probably formed about 3,500 (3,990-2,960 cal yr BP), 1,000, and 500 years ago. Ongoing uplift and arching of the coastal zone may mark renewal of mid-Pleistocene folding, but Holocene uplift has taken place as discrete events that were probably accompanied by earthquakes. At least five uplift events have taken place between Lituya Bay and Icy Point in the past 3,000 to 4,000 years, which imply an average recurrence interval of ~500 years. Because recurrence of events that uplifted the terraces is distinctly longer than the average earthquake recurrence interval for the nearby Fairweather fault, coastal uplift may occur independently. The Finger Glacier fault displaces the Holocene terraces and may be a developing link between the onshore and offshore segments of the Fairweather fault. Sample descriptions, locations, and types are included in the analytical data table. The data are available from the DGGS website: http://doi.org/10.14509/30903.

Access & Use Information

Non-Federal: This dataset is covered by different Terms of Use than Data.gov. License: No license information was provided.

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Dates

Metadata Date October 20, 2022
Metadata Created Date July 5, 2023
Metadata Updated Date July 5, 2023
Reference Date(s) January 1, 2022 (publication)
Frequency Of Update notPlanned

Metadata Source

Harvested from Alaska Division of Geological and Geophysical Surveys

Additional Metadata

Resource Type Dataset
Metadata Date October 20, 2022
Metadata Created Date July 5, 2023
Metadata Updated Date July 5, 2023
Reference Date(s) January 1, 2022 (publication)
Responsible Party Alaska Division of Geological & Geophysical Surveys (Point of Contact)
Contact Email
Guid 9909130d-7c03-4003-b0fd-ca57341a724b_source
Access Constraints Use Constraints: Any hard copies or published datasets utilizing these datasets shall clearly indicate their source. If the user has modified the data in any way, the user is obligated to describe the types of modifications the user has made. The user specifically agrees not to misrepresent these datasets, nor to imply that changes made by the user were approved by the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys. The State of Alaska makes no express or implied warranties (including warranties for merchantability and fitness) with respect to the character, functions, or capabilities of the electronic data or products or their appropriateness for any user's purposes. In no event will the State of Alaska be liable for any incidental, indirect, special, consequential, or other damages suffered by the user or any other person or entity whether from the use of the electronic services or products or any failure thereof or otherwise. In no event will the State of Alaska's liability to the Requestor or anyone else exceed the fee paid for the electronic service or product., Access Constraints: This report, map, and/or dataset is available directly from the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys (see contact information below).
Bbox East Long -137.450000
Bbox North Lat 58.747780
Bbox South Lat 58.547500
Bbox West Long -137.810000
Coupled Resource
Frequency Of Update notPlanned
Harvest Object Id 9909130d-7c03-4003-b0fd-ca57341a724b
Harvest Source Id 8f77b6d5-f630-4995-bdf3-0aee7158a7f3
Harvest Source Title Alaska Division of Geological and Geophysical Surveys
Licence The State of Alaska makes no expressed or implied warranties (including warranties for merchantability and fitness) with respect to the character, functions, or capabilities of the electronic data or products or their appropriateness for any user's purposes. In no event will the State of Alaska be liable for any incidental, indirect, special, consequential, or other damages suffered by the user or any other person or entity whether from the use of the electronic services or products or any failure thereof or otherwise. In no event will the State of Alaska's liability to the Requestor or anyone else exceed the fee paid for the electronic service or product.
Lineage This lineage was generated by the FGDC CSDGM to 19139 transformation
Metadata Language eng; USA
Metadata Type geospatial
Old Spatial {"type": "Polygon", "coordinates": [[[-137.81, 58.5475], [-137.45, 58.5475], [-137.45, 58.74778], [-137.81, 58.74778], [-137.81, 58.5475]]]}
Progress completed
Spatial Data Service Type
Spatial Reference System
Spatial Harvester True
Temporal Extent Begin 1970-01-01
Temporal Extent End 2022-01-01

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