Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6442726 | Quaternary Geochronology | 2008 | 30 Pages |
Abstract
Over 90% of the sampled eolianite deposits comprise Aminozones A, C, E (125Â ka), F?, G, and H, and correlate with interglacials from <10Â ka (Holocene) to ca. 500Â ka. In contrast, at the type locality of the Tamala Limestone along the Zuytdorp Cliffs, the upper eolianite-paleosol units are characterized by advanced stages of cavernous weathering, pedogenesis, and recrystallization. In the same units, sediment and snail samples generally yield very low or non-detectable levels of amino acids. These factors along with the stratigraphic complexity of the deposits reflect an age much greater than a large majority of sites along the WA coastline. These findings encourage a revision of the existing classification and nomenclature of Quaternary carbonate deposits in WA, as well as a reexamination of the underlying mechanisms related to the formation and emplacement of both carbonate and quartz dunes.
Keywords
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Geochemistry and Petrology
Authors
Paul J. Hearty, Michael J. O'Leary,