RIVER TERRACES OF THE MARIBYRNONG RIVER, VICTORIA 67 
forms, which may ultimately be correlated with the Maribyrnong 
River Valley cycles. The only localized warping that seems to 
have assisted erosion is the Footscray Warp, which occurred 
during the Maribyrnong Cycle, and therefore late in the physio- 
graphical sequence; its effect has been insignificant. No fracture 
lines are known to have occurred on the lava field. 
Tabular View of CoRRELATioisr 
Age 
Recent 
Maribyrnong Valley Flood Plains and 
Terraces 
' Vertical erosion due to latest fall of sea 
level at present in progress above tide 
limit in Maribyrnong valley. 
Glacial & Inter- 
glacial Stages 
Postglacial 
Rise of sea level. Raised beaches, sub- 
^ marine banks, wave platforms. 
Upper 
Pleistocene 
' Eu-static fall of sea level and Footscray 
Warp. Entrenchment of Maribyrnong 
Flood Plain and formation of Maribyrnong 
Terrace 
Eustatic rise of sea level. Formation of 
Maribyrnong Flood Plain 
Eustatic fall of sea level. Entrenchment 
J of Braybrook Flood Plain and formation 
of Braybrook Terrace • • 
Eustatic rise of sea level. Formation of 
Braybrook Flood Plain 
Eustatic fall of sea level. Entrenchment 
of Keilor Flood Plain and formation of 
Keilor Terrace 
^ Formation of Keilor Flood Plain. 
Wurm 3 
W2/3 
Interglacial 
Wurm 2 
Wl/2 
Interglacial 
Wurm 1 
Middle 
Pleistocene 
Vertical erosion of Keilor Cycle. 
Keilor Plains Basalt (Newer Basalt). 
I Riss-Wurm 
) Interglacial 
Acknowledgments 
We desire to acknowledge our indebtedness to Mr. J ohn Knight, 
B.Sc., of the State Coal Mine, Wonthaggi, and Mrs. S. Whincup, 
M.Sc.; they both entered wholeheartedly into the task of levelling 
and correlating the terraces in the Maribyrnong valley. 
To Mr. I. W. Scott, of the Ways and Works Branch of the 
Victorian Railwavs, we also express our thanks for checking our 
Dry Creek datum* by an accurate traverse from a Country Roads 
Board datum. , . , r. ^ x • 
The plans were drawn by the Geological Survey of Victoria. 
