US EPA

9417994 

Journal Article 

Holocene stratigraphic and morphological evolution of the Wandandian Creek delta, St Georges Basin, New South Wales 

Hopley, CA; Jones, BG 

2006 

Yes 

Australian Journal of Earth Sciences
ISSN: 0812-0099
EISSN: 1440-0952 

53 

6 

991-1000 

10.1080/08120090600880909 

WOS:000244180700006 

Subaerial exposure beside the Wandandian Creek channel during the last glacial maximum led to the development of red and orange mottling and, in some areas, produced a palaeosol over the Pleistocene land surface. Incision of the palaeo-Wandandian Creek, during the Late Pleistocene, formed a relatively deep steep-sided channel partially infilled with medium-grained fluvial sand. This palaeovalley became drowned as the post-glacial marine transgression impounded the western portion of St Georges Basin and the basal prodelta/lagoonal mud facies was deposited from ca 7 ka. The Wandandian Creek delta prograded down the palaeovalley and reached the study area similar to 3500-4000 years ago with the deposition of delta-front sandy silt and the overlying prograded sand facies. The subaerial portion of the delta is characterised by well-developed floodplains, levees, mouth bars and backswamps. Dredging in Wandandian Creek and land clearing for rural and urban development have had little long-term effect on the growth and morphology of Wandandian Creek delta. 

amino acid racemisation; delta; estuarine lagoon; Holocene; marine transgression; palaeovalley