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Further Geophysical Studies of the Haughton Impact StructureThe approximately 23 Ma Haughton impact structure, located at 75 deg 23 min N, 89 deg 39 min W in the Canadian Arctic, on Devon Island, Nunavut, Canada is a well-preserved impact structure with an original rim diameter estimated at about 23 - 24 km. Past studies, in the 1980s, did an initial survey of the Haughton structure, looking at its surface units, exposures, map surface geology, topographic and initial surveys of gravity and magnetic fields in profiles across the impact structure. A topological outer ring and the lack of a well-defined central peak was cited as evidence that Haughton was a multi-ring structure. However other authors consider it more likely that the Haughton structure is a central-peak basin with simply a limited extent, and/or full peak features having been removed through glaciations and subsequent years. The impact structure is located in approximately 2 km thickness of carbonate material on top of a gneissic basement. The impact structure itself can be described in terms of uplifted and moved blocks of altered gneissic and carbonate material with areas in the center of the crater covered with impact carbonate melts and/or reworked impact breccias. Additional information is included in the original extended abstract.
Document ID
20050169531
Acquisition Source
Headquarters
Document Type
Conference Paper
Authors
Glass, B. J.
(NASA Ames Research Center Moffett Field, CA, United States)
Domville, S.
(NASA Ames Research Center Moffett Field, CA, United States)
Lee, P.
(Search for Extraterrestrial Intelligence Inst. Mountain View, CA, United States)
Date Acquired
September 7, 2013
Publication Date
January 1, 2005
Publication Information
Publication: Lunar and Planetary Science XXXVI, Part 7
Subject Category
Geophysics
Distribution Limits
Public
Copyright
Public Use Permitted.
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