File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Desiccation of late Quaternary inner shelf sediments: Microfabric observations

TitleDesiccation of late Quaternary inner shelf sediments: Microfabric observations
Authors
Issue Date2002
PublisherElsevier Ltd. The Journal's web site is located at http://www.elsevier.com/locate/quaint
Citation
Quaternary International, 2002, v. 92, p. 73-87 How to Cite?
AbstractPalaeo-desiccated crusts often form at the top of pre-Holocene shelf sediments during low sea-level stands resulting in significant changes in the mechanical properties. To assist in understanding these changes and the implications for Quaternary geology, the microfabric of sediment samples from the inner shelf off Hong Kong has been studied using scanning electron microscope techniques incorporating the latest methods of quantitative image analysis. These studies have been supported by petrographic observations and chemical analyses of the pore fluids. Holocene marine sediments usually have a honeycomb fabric while pre-Holocene marine sediments are more compact. In regions of high clay content, the palaco-desiccated crust often possesses large planar voids filled with coarse silt-sized particles. This desiccated crust often contains relics of root traces filled with pyrite showing varying degrees of oxidation. The release of amorphous iron acts as a cementation agent and binds large silt/small sand grains giving a more compact fabric than that in neighbouring regions. Cementation in the pre-Holocene marine deposits creates strengthened open-fabric arrangements which may initially withstand moderate loads. Further evidence of desiccation comes from the presence of halite crystals in the pore fluid which has salt concentrations below that of normal sea water. © 2002 Elsevier Science Ltd and INQUA. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/182409
ISSN
2015 Impact Factor: 2.067
2015 SCImago Journal Rankings: 1.123
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorTovey, NKen_US
dc.contributor.authorYim, WWSen_US
dc.date.accessioned2013-04-29T04:00:03Z-
dc.date.available2013-04-29T04:00:03Z-
dc.date.issued2002en_US
dc.identifier.citationQuaternary International, 2002, v. 92, p. 73-87en_US
dc.identifier.issn1040-6182en_US
dc.identifier.urihttp://hdl.handle.net/10722/182409-
dc.description.abstractPalaeo-desiccated crusts often form at the top of pre-Holocene shelf sediments during low sea-level stands resulting in significant changes in the mechanical properties. To assist in understanding these changes and the implications for Quaternary geology, the microfabric of sediment samples from the inner shelf off Hong Kong has been studied using scanning electron microscope techniques incorporating the latest methods of quantitative image analysis. These studies have been supported by petrographic observations and chemical analyses of the pore fluids. Holocene marine sediments usually have a honeycomb fabric while pre-Holocene marine sediments are more compact. In regions of high clay content, the palaco-desiccated crust often possesses large planar voids filled with coarse silt-sized particles. This desiccated crust often contains relics of root traces filled with pyrite showing varying degrees of oxidation. The release of amorphous iron acts as a cementation agent and binds large silt/small sand grains giving a more compact fabric than that in neighbouring regions. Cementation in the pre-Holocene marine deposits creates strengthened open-fabric arrangements which may initially withstand moderate loads. Further evidence of desiccation comes from the presence of halite crystals in the pore fluid which has salt concentrations below that of normal sea water. © 2002 Elsevier Science Ltd and INQUA. All rights reserved.en_US
dc.languageengen_US
dc.publisherElsevier Ltd. The Journal's web site is located at http://www.elsevier.com/locate/quainten_US
dc.relation.ispartofQuaternary Internationalen_US
dc.titleDesiccation of late Quaternary inner shelf sediments: Microfabric observationsen_US
dc.typeArticleen_US
dc.identifier.emailYim, WWS: wwsyim@hku.hken_US
dc.identifier.authorityYim, WWS=rp01746en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1016/S1040-6182(01)00116-1en_US
dc.identifier.scopuseid_2-s2.0-0036272074en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0036272074&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume92en_US
dc.identifier.spage73en_US
dc.identifier.epage87en_US
dc.identifier.isiWOS:000175741800007-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridTovey, NK=7003989574en_US
dc.identifier.scopusauthoridYim, WWS=7007024728en_US

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats