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RB 86/00066 New record and tectonic implications of a high-level Lepidocyclina-bearing limestone, Bremer Valley, eastern Mount Lofty Ranges.
Published: 01 Sep 1986 Created: 07 Nov 2024 Revised: 07 Nov 2024
Author: Lindsay, J.M.

The distinctive large, benthonic, shallow marine foraminifer Lepidocyclina howchini has been identified, with an associated benthonic microfauna, in limestone in a borrow pit located in the Bremer Valley 3 km east of Kanmantoo. The limestone is a...

The distinctive large, benthonic, shallow marine foraminifer Lepidocyclina howchini has been identified, with an associated benthonic microfauna, in limestone in a borrow pit located in the Bremer Valley 3 km east of Kanmantoo. The limestone is a marginal correlative of the Morgan Limestone of the Murray Basin. The elevation, depositional palaeodepth constraints, and the age (probably earliest Middle Miocene, about 16 Ma), when taken together would suggest a relative uplift of at least 100 metres within the last 16 Ma for this part of the Mount Lofty Ranges. This Bremer Valley fossil locality is 50 metres higher than the only other high level record of the L. howchini Zone in the Mount Lofty Ranges, sited 63 km distant to the SW within the historic Myponga [Sub-basin] coal exploration bore A which was privately drilled in 1930.

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About this record

Record No rb8600066
Topic Geoscientific Information
Type of Resource Document
Category Type
Document Type Departmental Publication - Geological Survey Geoscience Publication
Contributor Geological Survey of South Australia. Palaeontology Branch
Sponsor
Tenement
Tenement Holder
Operator
Geological Province
Mine Name
Stratigraphy
Commodity limestone
Notes 
Geographic Locality: Caloote;Myponga;Mannum;Callington;Hd Monarto, secn 2001
Doc No: RB 86/00066
Drillhole: SA Black Coal Syndicate NL Myponga coal bore A;(26416)
Drillhole Unit No: 6527 00420
Geographic Locality: Caloote;Myponga;Mannum;Callington;Hd Monarto, secn 2001
Doc No: RB 86/00066
Drillhole: SA Black Coal Syndicate NL Myponga coal bore A;(26416)
Drillhole Unit No: 6527 00420
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/rb8600066
Citation Lindsay, J.M. 1986. RB 86/00066 New record and tectonic implications of a high-level Lepidocyclina-bearing limestone, Bremer Valley, eastern Mount Lofty Ranges. Departmental Publication - Geological Survey Geoscience Publication. Government of South Australia.
https://pid.sarig.sa.gov.au/document/rb8600066

Technical information

Status
Maintenance and Update Frequency
Geographic Reference GDA2020 (EPSG:7844)
Geo bounding box {"type":"Polygon","coordinates":[[[138,-35.5],[139.5,-35.5],[139.5,-35],[138,-35],[138,-35.5]]]}
Purpose 

                    
                    

                    
                  		
                

              
                
                

                  
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