MSirmon Posted May 24, 2019 Share Posted May 24, 2019 Kicking rocks near Spanish Point Ireland and ran across this item. I believe the area is Carboniferous but not sure where some of these rocks rolled in from. What is this barrel looking item hiding inside the large rock? Geological with some odd features? Link to comment Share on other sites More sharing options...
Ludwigia Posted May 24, 2019 Share Posted May 24, 2019 Could be some kind of vertebra? 1 Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
westcoast Posted May 24, 2019 Share Posted May 24, 2019 Looks like one of the many siderite concretions from that area, which you are correct is entirely carboniferous, however I've no idea what the thing inside it is... Link to comment Share on other sites More sharing options...
Mark Kmiecik Posted May 25, 2019 Share Posted May 25, 2019 Looks a lot like leaf scars. Plants common there? Mark. Fossil hunting is easy -- they don't run away when you shoot at them! Link to comment Share on other sites More sharing options...
westcoast Posted May 25, 2019 Share Posted May 25, 2019 2 hours ago, Mark Kmiecik said: Looks a lot like leaf scars. Plants common there? Yep. Lepidodendron is found there Link to comment Share on other sites More sharing options...
Rockwood Posted May 25, 2019 Share Posted May 25, 2019 It looks just as identifiable as the concretions I usually pick to break open. Link to comment Share on other sites More sharing options...
Oxytropidoceras Posted May 25, 2019 Share Posted May 25, 2019 The Spanish Point headland consists of Carboniferous strata of Doonlicky Cyclothem. At the Spanish Point headland, it consists of "spectacularly‐deformed" siltstones and sandstones that are both slumped and faulted. East of the deformed sedimentary strata, the uppermost beds of the Doonlicky Cyclothem consist of a series of sandstone beds. They are capped by a layer of distinctive, meter-thick, well-cemented, white sandstone. The sandstone, which contains fossil rootlets, has an irregular top surface, and displays polygonal patterns, represents a mature, well-drained paleosol. This paleosol is overlain by several beds of well‐cemented, fine, dark sandstone that represent a major marine transgression and sea level rise. Four meters above the white sandstone, the Reticuloceras bilingue Marine Band outcrops in the intertidal platform as a 1.5 meter thick black shale that contains abundant goniatites and the bivalve Dunbarella (Wignall and Best, 2016). Spanish Point exposures of the Doonlicky Formation Clastic Cycles http://www.sepmstrata.org/page.aspx?pageid=476 Banner Rocks: The Geological Heritage of County Clare http://www.clarelibrary.ie/eolas/coclare/heritage/pdfs/banner_rocks.pdf References Wignall, P.B. and Best, J., 2016. The Younger Namurian Cyclothems around Spanish Point. In A Field Guide to the Carboniferous Sediments of the Shannon Basin, Western Ireland, First Edition. Edited by James L. Best and Paul B. Wignall. International Association of Sedimentologists, John Wiley & Sons, Ltd. pp.350-360. Yours, Paul H. Link to comment Share on other sites More sharing options...
Rockwood Posted May 25, 2019 Share Posted May 25, 2019 The ones I referred to do have a polygonal pattern and were associated with stigmaria. Glad I kept them now. Link to comment Share on other sites More sharing options...
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