Ann: Koba Expands its Yarramba Uranium Project in South Australia, page-7

Union Corporation geologists during the 1970s recognised paleochannel stratigraphy in the drill holes of ELs 5-6 but the four-mile grid spacing of drilling prevented mapping of the possible channels (Randell, 1973). Their preferred model invoked a deltaic environment with westward paleo-flow towards a larger ancestral Lake Frome (in which the Namba carbonates and dolomitic ooze in the south-western corner of the tenements were deposited).

Union Corporation interpreted a north-south trending paleo-shoreline of a Cenozoic lake in this area, comprising a string of deltas. Alternatively the sinuous zone of reduced sediments may represent a paleochannel system within the Namba Formation. If so, this could represent a younger and northerly extension of the Yarramba Paleochannel system in the underlying Eyre Formation that hosts the Honeymoon and Oban uranium deposits.

[Extracts from pages 45, 56 and 107 of the Geoscience Australia report]



Note: a number of companies in the above table, from the above Geoscience Australia report, are also mentioned in Table 1 (page 6) of yesterday's Koba ASX announcement.

Cheers

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