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Palynology of Crayfish 1A.
Created: 13 Nov 2024 Revised: 13 Nov 2024
Author: Morgan, R.

The base of the Otway Group, considered on seismic evidence to be the oldest in the region, is basal Cretaceous (early Neocomian age), and definitely not Late Jurassic. The Otway Group is thick, but has some marine influence intermittently...

The base of the Otway Group, considered on seismic evidence to be the oldest in the region, is basal Cretaceous (early Neocomian age), and definitely not Late Jurassic. The Otway Group is thick, but has some marine influence intermittently throughout. The influence, however, is never more than very marginal marine, but estuarine and beach environments are entirely possible. The top Pretty Hill angular unconformity seen on seismic is interpreted to lie at 5340 in the well section at the base of the Aptian. The Sherbrook Group is extremely thin and may be incomplete. Overlying a probable unconformity, the basal Tertiary Dilwyn Formation is present.

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About this record

Record No mesac35656
Topic Geoscientific Information
Type of Resource Document
Category Type
Document Type Energy Company Report - Annual licence or technical report
Contributor
Sponsor
Tenement EPP 18
Tenement Holder Ultramar Australia Ltd
Operator Ultramar Australia Ltd
Geological Province Otway Basin
Mine Name
Stratigraphy
Commodity
    Notes 
    Doc No: Env 06758 R 3 p: 52-65
Drillhole: Crayfish-A 1
    Doc No: Env 06758 R 3 p: 52-65
Drillhole: Crayfish-A 1
    Language English
    Metadata Standard ISO 19115-3

    Citations

    Use constraints License
    License Creative Commons Attribution 4.0
    Persistent identifier https://pid.sarig.sa.gov.au/document/mesac35656
    Citation Morgan, R. Palynology of Crayfish 1A. Energy Company Report - Annual licence or technical report
    https://pid.sarig.sa.gov.au/document/mesac35656

    Technical information

    Status
    Maintenance and Update Frequency
    Geographic Reference GDA2020 (EPSG:7844)
    Geo bounding box {"type":"Polygon","coordinates":[[[139.5,-37.5],[140,-37.5],[140,-37],[139.5,-37],[139.5,-37.5]]]}
    Purpose 
    
                    
                    
    
                    
                      		
                
    
              
                
                
    
                  
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