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dc.contributor.authorHaines, P. W.
dc.contributor.authorRawlings, D. J.
dc.date.accessioned2021-02-12T20:55:24Z
dc.date.available2021-02-12T20:55:24Z
dc.date.issued2002-01-01
dc.identifier.citationHaines, P. W., & Rawlings, D. J. (2002). The Foelsche structure, Northern Territory, Australia: an impact crater of probable Neoproterozoic age. Meteoritics & Planetary Science, 37(2), 269-280.
dc.identifier.issn1945-5100
dc.identifier.doi10.1111/j.1945-5100.2002.tb01109.x
dc.identifier.urihttp://hdl.handle.net/10150/655474
dc.description.abstractThe Foelsche structure is situated in the McArthur Basin of northern Australia (16 degrees 40' S, 136 degrees 47' E). It comprises a roughly circular outcrop of flat-lying Neoproterozoic Bukalara Sandstone, overlying and partly rimmed by tangentially striking, discontinuous outcrops of dipping, fractured and brecciated Mesoproterozoic Limmen Sandstone. The outcrop expression coincides with a prominent circular aeromagnetic anomaly, which can be explained in terms of the local disruption and removal or displacement of a regional mafic igneous layer within a circular area at depth. Samples of red, lithic, pebbly sandstone from the stratigraphically lowest exposed levels of the Bukalara Sandstone within the Foelsche structure contain detrital quartz grains displaying mosaicism, planar fractures (PFs) and planar deformation features (PDFs). PFs and PDFs occur in multiple intersecting sets with orientations consistent with a shock metamorphic origin. The abundance and angular nature of the shocked grains indicates a nearby provenance. Surface expression and geophysical data are consistent with a partly buried complex impact crater of ~6 km in diameter with an obscured central uplift ~2 km in diameter. The deformed outcrops of Limmen Sandstone are interpreted as relics of the original crater rim, but the central region of the crater, from which the shocked grains were likely derived, remains buried. From the best available age constraints the Foelsche structure is most likely of Neoproterozoic age.
dc.language.isoen
dc.publisherThe Meteoritical Society
dc.relation.urlhttps://meteoritical.org/
dc.rightsCopyright © The Meteoritical Society
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.subjectFoelsche structure
dc.subjectquartz grains
dc.subjectplanar fractures
dc.subjectplanar deformation
dc.titleThe Foelsche structure, Northern Territory, Australia: An impact crater of probable Neoproterozoic age
dc.typeArticle
dc.typetext
dc.identifier.journalMeteoritics & Planetary Science
dc.description.collectioninformationThe Meteoritics & Planetary Science archives are made available by the Meteoritical Society and the University of Arizona Libraries. Contact lbry-journals@email.arizona.edu for further information.
dc.eprint.versionFinal published version
dc.description.admin-noteMigrated from OJS platform February 2021
dc.source.volume37
dc.source.issue2
dc.source.beginpage269
dc.source.endpage280
refterms.dateFOA2021-02-12T20:55:24Z


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