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100 _aWang, Feng
_952184
245 _aRefining the late-Holocene coastline and delta development of the northern Yangtze River delta: Combining historical archives and OSL dating/
260 _bSage,
_c2019.
300 _aVol 29, issue 9, 2019 : (1439-1449 p.)
520 _aHistorical documents provide a general chronological overview of the environmental evolution of the Yangtze River delta (YRD) during the last ca. 2000 years; however, absolute dating of the region’s late Holocene sediment is relatively rare. Optically stimulated luminescence (OSL) dating has been increasingly applied to the age determination of Holocene deposits in deltaic environments. In this study, three 23–27 m long drill cores running from south to north were collected from the Qihai plain of the northern YRD in order to reconstruct the history of this region’s formation since the late Holocene. A total of 24 samples from the three cores were subjected to OSL dating using coarse silt-sized (45–63 μm) quartz. The OSL ages range from approximately 190–3490 a revealing that the age of the delta front and delta plain facies in the coring sites are younger than 500 a while the sediments in the underlying prodelta facies are older than 2000 a. On the basis of the large age gap between the two set of deposits, we suspect that the coring sites remained submerged from 2000 to 500 years ago. As the central core has older and coarser sandy deposits than the neighbouring cores, we infer that the central core was located on a sandy mouth bar, while other cores sat within distributary channels within the estuary. The OSL ages are consistent with both the chronology implied by historical documents and other stratigraphic records in the area. This study enhances the chronological framework of land formation and delta evolution in the Qihai plain area of the YRD and thereby consolidates the conclusions derived from the application of a single technique alone
650 _adelta evolution,
_952185
650 _ahistorical archives,
_952186
650 _a late Holocene,
_951310
650 _a optically stimulated luminescence (OSL),
_952187
650 _a particle size analysis,
_952188
650 _aYangtze River (Changjiang) delta
_952189
700 _aZhang, Weiguo
_952190
700 _aNian, Xiaomei
_952191
700 _aCan Ge,
_952192
700 _aZhao, Xuanqi
_952193
700 _a Qinzi Cheng,
_952194
700 _aChen, Jin
_952195
700 _a Hutchinson, Simon M
_952196
773 0 _012756
_916504
_dLondon: Sage Publication Ltd, 2019.
_tHolocene/
_x09596836
856 _uhttps://doi.org/10.1177/0959683619854522
942 _2ddc
_cART
999 _c12857
_d12857