Rezultati pretraživanja
  1. 29. kol 2017.

    Faulted shales and sandstones at Capital Hill unconformity, Canberra, Australia.

  2. 9. lis 2018.

    Long overdue offering for is the massively bedded calcareous Scala dei Murchi marls in Southern Sicily. For scale spot the people!

  3. 29. svi 2018.

    The spectacular Variscan folds in Carboniferous limestone at Loughshinny Beach, North Co. Dublin. (Don't overlook the neat unconformity to the Quaternary overburden!)

  4. 1. stu 2017.
  5. 7. stu 2017.

    I thought an early overfold might be useful this week @kingoscarfjord

  6. 25. srp 2017.

    Folded Silurian sediments found near Woburn House, Millisle, Co. Down

  7. 27. lip 2017.

    from Bergen (Norway): sigmoidal ductile deformation followed by brittle deformation in schist roadside outcrop.

  8. Locals call this spectacular sea stack ‘the chimney'. It’s a resistant mafic igneous dyke that cuts across the sedimentary rocks. You can find it in a rocky bay near Spillar’s Cove, part of the Spillars Cove-English Harbour fault zone Photo credit:

  9. 14. svi 2018.

    Chemical reactions between rocks & fluid drastically change how rocks deform! This serpentine (dark) has metasomatised to tremolite (light), a harder and tougher mineral, resulting in discrete cataclastic slip surfaces in a rock that otherwise deforms ductilely!!

  10. 20. ožu 2018.

    High-temperature deformation during emplacement of a pluton in the Vedrette di Ries tonalite (eastern Alps, Italy). The boudinaged tonalite apophysis is wrapped by highly foliated biotite paragneisses containing syntectonic sillimanite.

  11. 10. tra 2018.

    Recently had the opportunity to revisit the North coastline - the surf was choppy, but the was fantastic as ever! Large-scale chevron in deepwater sandstones & shales, with some very interesting small-scale too...

  12. 1. svi 2018.

    - some lovely offset (micro-faulted?) polysynthetic twinning in plagioclase feldspar from a pegmatite in the Loch Maree Group, north-west Highlands of Scotland.

  13. 12. ožu 2019.

    Happy , it's time for ! You will have until Wed ~10p ET. Patterns do not represent rock type or textural information. Wobbles = my unsteady hand, not intrinsic structure. Vote in the tweet below & have fun!

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  14. 2. kol 2018.

    I know this pocket size flexural-slip duplexes within Bude Formation is a bit late for . Or maybe just put it in

  15. 7. stu 2017.

    Death Valley truly is an amazing geologists playground and for me the Low Angle Normal Faults (LANFS) are the highlight

  16. 26. srp 2016.

    Kink bands in Kearney Siltstone Formation (Hawick Group) at Kearney Point, Co. Down

  17. 1. kol 2017.

    Faulted Palaeogene basalt lava flows at Cornamucklagh Quarry just outside Portadown, Co. Armagh.

  18. 31. srp 2018.

    Margin of a rodingite pod embedded in a serpentinite mélange. The rodignite (grey=hydrogarnet, green=diopside) is shattered w/ multiple generations of fractures and veins, indicating that brittle fracture occurred despite the surrounding serp. deforming ductiley!

  19. 18. srp 2017.

    : Composite layer crosscut by younger pegmatites and displaced by ductile shear zones. Credit: Giorgio Pennacchioni.

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