File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Postglacial sea-level changes in the northern South China Sea continental shelf: Evidence for a post-8200 calendar yr BP meltwater pulse

TitlePostglacial sea-level changes in the northern South China Sea continental shelf: Evidence for a post-8200 calendar yr BP meltwater pulse
Authors
Issue Date2006
PublisherElsevier Ltd. The Journal's web site is located at http://www.elsevier.com/locate/quaint
Citation
Quaternary International, 2006, v. 145-146, p. 55-67 How to Cite?
AbstractA postglacial sea-level record reconstructed through the study of 25 cores and 10 grab samples obtained from the siliciclastic-dominated northern South China Sea continental shelf between Hong Kong and Dongsha is presented. The seven sedimentary facies recognized are: (1) Pleistocene overconsolidated mud facies affected by palaeosol development due to sub-aerial exposure during the Last Glacial Maximum (LGM), (2) bioclastic sandy gravel facies occurring at a present-day se abed depth exceeding 120 m, (3) LGM bioclastic beach-dune sand facies at a present-day seabed depth between 110 and 120 m, (4) postglacial siliciclastic beach-dune sand facies formed during at least two episodes of sea-level stillstands at present-day seabed depths between 80 and 90 m, and 30 and 50 m, respectively, (5) postglacial transgressive sand facies of Late Pleistocene to Early Holocene age: radiocarbon dating shows that this facies was deposited in two stages before and after the 8200 calendar yr BP cold event, (6) pos tglacial sand and gravel-dominated facies with acoustic turbidity at a present-day seabed depth of about 50 m, (7) postglacial mud facies. Based on the radiocarbon ages obtained from samples located above and below the Holocene-Pleistocene hiatus in the two innermost shelf cores, and large variations of atmospheric radiocarbon concentration found during the last glacial period in a submerged stalagmite from the Bahamas (Beck et al., 2001. Science 292, 2453-2458), ages exceeding 8200 calendar yr BP are likely to represent minimum values. Ages postdating this limit, which are less affected by variations of atmospheric radiocarbon concentration, indicate the presence of a post-8200 calendar yr BP cold event meltwater pulse caused by eustatic sea-level rise from approximately 40 m below present to the present level by about 6000 calendar yr BP. Inaccuracies of the pre-8200 calendar yr BP radiocarbon ages may be attributed to large variations of atmospheric Δ14C during the postglacial period with greenhouse gases released from the sub-aerially exposed continental shelf probably accounting for a significant proportion. © 2005 Elsevier Ltd and INQUA. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/182412
ISSN
2015 Impact Factor: 2.067
2015 SCImago Journal Rankings: 1.123
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorYim, WWSen_US
dc.contributor.authorHuang, Gen_US
dc.contributor.authorFontugne, MRen_US
dc.contributor.authorHale, REen_US
dc.contributor.authorPaterne, Men_US
dc.contributor.authorPirazzoli, PAen_US
dc.contributor.authorRidley Thomas, WNen_US
dc.date.accessioned2013-04-29T04:00:05Z-
dc.date.available2013-04-29T04:00:05Z-
dc.date.issued2006en_US
dc.identifier.citationQuaternary International, 2006, v. 145-146, p. 55-67en_US
dc.identifier.issn1040-6182en_US
dc.identifier.urihttp://hdl.handle.net/10722/182412-
dc.description.abstractA postglacial sea-level record reconstructed through the study of 25 cores and 10 grab samples obtained from the siliciclastic-dominated northern South China Sea continental shelf between Hong Kong and Dongsha is presented. The seven sedimentary facies recognized are: (1) Pleistocene overconsolidated mud facies affected by palaeosol development due to sub-aerial exposure during the Last Glacial Maximum (LGM), (2) bioclastic sandy gravel facies occurring at a present-day se abed depth exceeding 120 m, (3) LGM bioclastic beach-dune sand facies at a present-day seabed depth between 110 and 120 m, (4) postglacial siliciclastic beach-dune sand facies formed during at least two episodes of sea-level stillstands at present-day seabed depths between 80 and 90 m, and 30 and 50 m, respectively, (5) postglacial transgressive sand facies of Late Pleistocene to Early Holocene age: radiocarbon dating shows that this facies was deposited in two stages before and after the 8200 calendar yr BP cold event, (6) pos tglacial sand and gravel-dominated facies with acoustic turbidity at a present-day seabed depth of about 50 m, (7) postglacial mud facies. Based on the radiocarbon ages obtained from samples located above and below the Holocene-Pleistocene hiatus in the two innermost shelf cores, and large variations of atmospheric radiocarbon concentration found during the last glacial period in a submerged stalagmite from the Bahamas (Beck et al., 2001. Science 292, 2453-2458), ages exceeding 8200 calendar yr BP are likely to represent minimum values. Ages postdating this limit, which are less affected by variations of atmospheric radiocarbon concentration, indicate the presence of a post-8200 calendar yr BP cold event meltwater pulse caused by eustatic sea-level rise from approximately 40 m below present to the present level by about 6000 calendar yr BP. Inaccuracies of the pre-8200 calendar yr BP radiocarbon ages may be attributed to large variations of atmospheric Δ14C during the postglacial period with greenhouse gases released from the sub-aerially exposed continental shelf probably accounting for a significant proportion. © 2005 Elsevier 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.titlePostglacial sea-level changes in the northern South China Sea continental shelf: Evidence for a post-8200 calendar yr BP meltwater pulseen_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/j.quaint.2005.07.005en_US
dc.identifier.scopuseid_2-s2.0-30344439556en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-30344439556&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume145-146en_US
dc.identifier.spage55en_US
dc.identifier.epage67en_US
dc.identifier.isiWOS:000234847600005-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridYim, WWS=7007024728en_US
dc.identifier.scopusauthoridHuang, G=7403425099en_US
dc.identifier.scopusauthoridFontugne, MR=7006220612en_US
dc.identifier.scopusauthoridHale, RE=11140800800en_US
dc.identifier.scopusauthoridPaterne, M=7004691218en_US
dc.identifier.scopusauthoridPirazzoli, PA=7005967586en_US
dc.identifier.scopusauthoridRidley Thomas, WN=6507028548en_US

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats