DOI: 10.1016/j.gloplacha.2013.08.014
论文题名: Mid to late Holocene sea-level reconstruction of Southeast Vietnam using beachrock and beach-ridge deposits
作者: Stattegger K. ; Tjallingii R. ; Saito Y. ; Michelli M. ; Trung Thanh N. ; Wetzel A.
刊名: Global and Planetary Change
ISSN: 0921-8218
出版年: 2013
卷: 110 起始页码: 214
结束页码: 222
语种: 英语
英文关键词: Holocene
; Mid-Holocene sea-level highstand
; Sea level
; Southeast-Vietnam coast
Scopus关键词: Geophysical modeling
; Holocene sea-level change
; Holocenes
; Mid to late Holocene
; Mid-Holocene sea-level highstand
; Relative sea-level changes
; Sea-level fluctuations
; Sea-level reconstruction
; Beaches
; Computer simulation
; Deposits
; Floods
; Sea level
; continental margin
; depositional environment
; flooding
; Holocene
; ice sheet
; isostasy
; numerical model
; reconstruction
; sea level change
; Mekong Valley
; Viet Nam
英文摘要: Beachrocks, beach ridge, washover and backshore deposits along the tectonically stable south-eastern Vietnamese coast document Holocene sea level changes. In combination with data from the final marine flooding phase of the incised Mekong River valley, the sea-level history of South Vietnam could be reconstructed for the last 8000. years. Connecting saltmarsh, mangrove and beachrock deposits the record covers the last phase of deglacial sea-level rise from 5 to + 1.4 m between 8.1 to 6.4 ka. The rates of sea-level rise decreased sharply after the rapid early Holocene rise and stabilized at a rate of 4.5. mm/year between 8.0 and 6.9. ka. Southeast Vietnam beachrocks reveal that the mid-Holocene sea-level highstand slightly above +. 1.4. m was reached between 6.7 and 5.0. ka, with a peak value close to +. 1.5. m around 6.0. ka. This highstand is further limited by a backshore and beachridge deposit that marks the maximum springtide sea-level just below the base of the overlying beach ridge. After 5.0. ka sea level dropped below +. 1.4. m and fell almost linearly at a rate of 0.24. mm/year until 0.63. ka and +. 0.2. m as evidenced by the youngest beachrocks.The Holocene sea-level fluctuations observed in Southeast Vietnam resulted from eustatic and isostatic processes. The sea-level rise up to the mid-Holocene highstand was provoked by the last melting phase of glacial polar ice-sheets. The sea-level drop after the mid-Holocene highstand was induced by the isostatic processes of continental levering with an uplift of continents in low latitudes and depression of adjacent flooded continental shelf areas and Equatorial Ocean Siphoning transferring oceanic waters from low latitudes to the increasing volume of oceanic basins in higher latitudes. The regional expression in terms of magnitude and timing of relative sea-level change might contribute to validation of geophysical model simulations. © 2013 Elsevier B.V. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84888288710&doi=10.1016%2fj.gloplacha.2013.08.014&partnerID=40&md5=bb7aa78135ec2a3882590a18620ccca0
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/11124
Appears in Collections: 全球变化的国际研究计划
There are no files associated with this item.
作者单位: Institute of Geosciences, University of Kiel, Otto-Hahn-Platz 1, D-24118, Kiel, Germany
Recommended Citation:
Stattegger K.,Tjallingii R.,Saito Y.,et al. Mid to late Holocene sea-level reconstruction of Southeast Vietnam using beachrock and beach-ridge deposits[J]. Global and Planetary Change,2013-01-01,110.