The bedrock topography and origin of Broken Bay, N.S.W.
- 1 June 1974
- journal article
- research article
- Published by Taylor & Francis in Journal of the Geological Society of Australia
- Vol. 21 (2), 209-214
- https://doi.org/10.1080/00167617408728846
Abstract
The bedrock topography of Broken Bay on the eastern coast of Australia has been investigated by means of a low‐power marine sparker system. It has been possible to reconstruct the upper Pleistocene drainage pattern, which differs somewhat from the present configuration of the estuary. Two distinct bedrock channels have been identified: the first along the present Hawkesbury River and the second along the present position of Pitt Water. They are separated by a rock bar across the entrance of Pitt Water. The Pitt Water channel has been identified as reaching the sea through the Palm Beach tombolo. Bedrock depths in the entrance of Broken Bay reach 125 m below sea level, which is consistent with the rise of sea level due to post‐glacial melting.Keywords
This publication has 1 reference indexed in Scilit:
- The origin and development of the Umina—woy Woy Beach ridge system, broken bay, N.S.W.Australian Geographer, 1969