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Concretion

Cannon-ball Concretion

Circuating groundwater carries dissolved minerals such as calcium carbonate, iron carbonate and silica which may precipitate in concentric layers around a suitable nucleus in the siltstone such as a drop stone, glendonite or fossil. 

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Concretion (Cannon-ball Concretion) at Ulladulla, NSW - 8 Mar 2019 by CBrandis Concretion (Cannon-ball Concretion) at Murramarang National Park - 9 Sep 2018 by mjjefferis Concretion (Cannon-ball Concretion) at Bendalong Walking Track - 3 Aug 2018 by Stewart Concretion (Cannon-ball Concretion) at Coomee Nulunga Cultural Walking Track - 15 Jun 2018 by mjjefferis Concretion (Cannon-ball Concretion) at Murramarang National Park - 21 Jan 2018 by mjjefferis
Concretion (Cannon-ball Concretion) at Ulladulla, NSW - 8 Mar 2019 by CBrandis
Concretion (Cannon-ball Concretion) at Murramarang National Park - 9 Sep 2018 by mjjefferis
Concretion (Cannon-ball Concretion) at Bendalong Walking Track - 3 Aug 2018 by Stewart
Concretion (Cannon-ball Concretion) at Coomee Nulunga Cultural Walking Track - 15 Jun 2018 by mjjefferis
Concretion (Cannon-ball Concretion) at Murramarang National Park - 21 Jan 2018 by mjjefferis

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View distribution

The Bommie Ulladulla
Barry Tomkinson at Emily Miller Beach

Species information

  • Concretion Scientific name
  • Cannon-ball Concretion Common name
  • Not Sensitive
  • Cosmopolitan
  • Non-Invasive
  • 6.3m to 37m Recorded at altitude

Location information

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