Graham Eaton / Minor normal or extensional faults exposed in the cliffs and also on the shore wave-cut platform. Nash Point, South Glamorgan Heritage Coast, Llantwit Major, Wales, UK. September 2017. The cliffs com...

Graham Eaton / Bedding planes and joint network in Jurassic age Blue Lias limestone and shale exposed at low tide at Nash Point, South Glamorgan Heritage Coast, Wales, September 2017.

Graham Eaton / Several faults cutting through Jurassic age, Liassic Limestones (Blue Lias) near Southerndown, South Glamorgan Heritage Coast, Wales, UK. September. The faults can be seen displacing the bedding plane...

Graham Eaton / Faulted Jurassic age Liassic limestones (Blue Lias) exposed in the cliffs and on the foreshore. Southerndown, South Glamorgan Heritage Coast, Wales, UK. September

Ashley Cooper / Newly refurbished Kings Cross railway Station, London, England, UK. April.

Graham Eaton / Folded Carboniferous age sandstones, Hartland Quay, Devon, UK, May

Graham Eaton / Conjugate kink bands in Carboniferous turbidite shales, Bude, Cornwall, UK, May

Graham Eaton / Tilted beds of sandstone and thin shales of the Carboniferous, Culm Measures (Bude Formation) Sandy Mouth near Bude, Cornwall, UK, May. The bed represent cycles of deposition associated with climate c...

Graham Eaton / Tilted beds of Carboniferous age, Culm Measures (Bude Formation) sandstone and shale, Bude, Cornwall, UK, May.

Graham Eaton / A Chevron or Kink fold anticline in Carboniferous age turbidite sediments. Bude, Cornwall, UK, may.

Graham Eaton / Ductile folding in Pre-Cambrian age, metamorphic, Chlorite Schist. Llyn, Wales, UK, May

Graham Eaton / Crenulation cleavage developed in Pre-Cambrian age, metamorphic, Chlorite Schist. Llyn, Wales, UK, May

Graham Eaton / Crenulation cleavage developed in Pre-Cambrian age chlorite schist, a metamorphic rock Llyn, Wales, UK, May

Graham Eaton / Tilted beds of sandstone and thin shales of the Carboniferous, Culm Measures (Bude Formation) Sandy Mouth near Bude, Cornwall, UK, May. The bed represent cycles of deposition associated with climate c...

Graham Eaton / Small extension (normal) faults within a layer of shale between two layers of more competent sandstone. Carboniferous, turbidites, Bude, Cornwall, UK, May.

Graham Eaton / A small fault offsetting Carboniferous limestone that forms the side of a collapse arch. Penmon, Anglesey, Wales, UK, June

Graham Eaton / Recumbent folds in Carboniferous age sandstones and Shale (Bude Formation), Bude, Cornwall, UK, May. The rocks were deformed during the Hercynian Orogeny or mountain building event.

Graham Eaton / Recumbent folds in Carboniferous age sandstones and Shale (Bude Formation), Bude, Cornwall, UK, May. The rocks were deformed during the Hercynian Orogeny or mountain building event.

Graham Eaton / Tilted beds of Carboniferous age, Culm Measures (Bude Formation) Sandy Mouth, near Bude, Cornwall, UK, May

Graham Eaton / Sole marks on the underside of a bed of Carboniferous age, turbidite sandstone. Bude, Cornwall, UK, may. Sole marks are formed by flowing water or currents and can indicate the flow direction when the...

Graham Eaton / En echelon tension (or parallel) cracks in Carboniferous age turbidite sandstones, Bude, Cornwall, UK, May. The tension cracks have formed in the more competent sandstones as the rocks were folded. T...

Graham Eaton / Load casts on the underside of a sandstone bed of Carboniferous age, Culm Measures (Bude Formation), Bude, Cornwall, UK, May.

Graham Eaton / Load casts on the underside of a sandstone bed of Carboniferous age, Culm Measures (Bude Formation), Bude, Cornwall, UK, May.

Graham Eaton / A monocline fold with a minor thrust fault in Carboniferous age sandstones, Bude, Cornwall, UK, May.

Graham Eaton / Tightly folded Pre-Cambrian age, Quartz Mica Schist, a metamorphic rock. These are ductile folds generated under compression. Rhoscolyn Wales, UK, June

Graham Eaton / Monocline fold that has been faulted during the Variscan orogeny, in Carboniferous sandstone and shale. Broad Haven, Pembrokeshire, Wales, UK, May

Graham Eaton / Large anticlinal fold, caused by deformation during the Variscan orogeny, in Carboniferous, Coal Measures sandstones and shale. Braod Haven, Pembrokeshire, Wales

Graham Eaton / Small anticlinal fold in Carboniferous, Coal Measures rocks. Broad Haven, Pembrokeshire, Wales, UK, May.

Graham Eaton / Small anticlinal fold in carboniferous, Coal Measures rocks, Broad Haven, Pembrokeshire, Wales, UK, May.

Graham Eaton / Monocline fold that has been faulted during the Variscan orogeny, in Carboniferous sandstone and shale. Broad Haven, Pembrokeshire, Wales, UK, May

Graham Eaton / A monocline fold that has been faulted during the Variscan orogeny, in Carboniferous sandstone and shale. Broad Haven, Pembrokeshire, Wales, UK, May

Graham Eaton / The Ladies Cave anticline, an asymmetric chevron fold formed during the Variscan orogeny, in Carboniferous, Westphalian, Lower Coal Measures, sediments. Saundersfoot, Pembrokeshire, Wales. June 2017

Graham Eaton / The Ladies Cave anticline, an asymmetric chevron fold formed during the Variscan orogeny, in Carboniferous, Westphalian, Lower Coal Measures, sediments. Saundersfoot, Pembrokeshire, Wales. June 2017

Graham Eaton / The Ladies Cave anticline, an asymmetric chevron fold formed during the Variscan orogeny, in Carboniferous, Westphalian, Lower Coal Measures, sediments. Saundersfoot, Pembrokeshire, Wales. June 2017

Graham Eaton / Small thrust fault in Ordovician age sedimentary rocks - geological feature caused by horizontal compression of rock layers, resulting in a low angle reverse fault. Cilan Head, Abersoch, Wales, UK. De...

Graham Eaton / Angular unconformity, between the underlying Cambrian age sedimentary rocks and the overlying Ordovician sedimentary rocks. Trwyn Wylfa, Abersoch, Wales, August. An unconformity represents a time ga...

Graham Eaton / Sea cliffs, geological section through Cambrian and Ordovician sedimentary rocks with faulted monocline fold structure. Rocks include Nant-pig Musdstones, Abersoch, Gwynedd, Wales, UK

Graham Eaton / Steeply dipping beds of Silurian age turbidite sediments, Clarach Bay, Aberystwyth, Wales, UK, September 2014.

Paul D Stewart / Ammonite (Cosmoceras proniae) from Jurrasic period, 165 million years ago, from Russia. Shown ithin the shell of modern Abalone (Haliotis sp.) This illustrates the preservation in the ammonite fossil...

Solvin Zankl / Structural elements of soft corals. After the die-off of the soft coral the spicules become a fraction of the sediment and therefore of sand beaches, from Raja Ampat, Indonesia. Digital focus stackin...

Roland Seitre / Detail of Mammoth Ivory (free trade) showing structural lines, note the sharp angle crossing of the lines like a prehistoric arrow end. National Fish and Wildlife Forensics Laboratory, Ashland, Oregon...

Roland Seitre / Detail of Elephant Ivory (protected) showing structural lines, note the very flat crossing of the lines like modern house roof. National Fish and Wildlife Forensics Laboratory, Ashland, Oregon, USA

Albert Lleal / SEM close-up detail of a feather at 28x magnification showing the main shaft or rachis, barbs and interlocking barbules which provide structural strength

Chris Newbert / Soft Coral (Dendronephthya sp) outcroppings detail of spicules or sclerites which give the soft coral its structural strength when inflated, Solomon Islands

Graham Eaton / Folded Psammite with small kink bands on the fold limbs, New Harbour Group of the Ediacaran Period, Anglesey, Wales, UK. July, 2022.

Graham Eaton / Folded Psammite with small kink bands on the fold limbs, New Harbour Group of the Ediacaran Period, Anglesey, Wales, UK. July, 2022.

Graham Eaton / Folded Psammite with small kink bands on the fold limbs, New Harbour Group of the Ediacaran Period, Anglesey, Wales, UK. July, 2022.

Graham Eaton / En echelon tension cracks in limestone, forming a shear zone. The mineral crystals grow perpendicular to the crack indicating how the rock has been pulled apart, Clovelley, Devon, UK. January, 2022.

Graham Eaton / Vertically bedded, Carboniferous age, Bude sandstone and shale. There is a strong cleavage in the rock that runs diagonally from upper left to lower right, Bude, Cornwall, UK. January, 2022.

Graham Eaton / The Three Chimneys, three prominent layers of vertically bedded, Carboniferous age sandstone. The sediments were deposited horizontally, but were tilted during the Variscan Orogeny, Marloes, Pembroke...

Graham Eaton / The Three Chimneys, three prominent layers of vertically bedded, Carboniferous age sandstone. The sediments were deposited horizontally, but were tilted during the Variscan Orogeny, Marloes, Pembroke...

Graham Eaton / An en echelon band of tension gashes or cracks in rock. The cracks have become mineral infilled (quartz) with the mineral fibres growing in the direction that the cracks were opened, Abereiddy, Pembro...

Graham Eaton / An synclinal fold with minor thrusting due to flexural slip. Carboniferous, Culm Measures, deformed during the Variscan or Hercynian Orogeny, Bude, Cornwall, UK. January, 2022.

Graham Eaton / A shear zone in Pre-Cambrian graphite schists and phyllite. The rocks are highly deformed and contain faults and Riedel Shears, near Aberdaron, Wales, UK. April, 2021.

Graham Eaton / A section of Pre-Cambrian age metamorphic rocks displaying S-C deformation fabric, Holy Island, Anglesey, Wales. July, 2021.

Graham Eaton / Within the Cambrian, Gwna Group, here is an excellent example of S-C fabric within schistose metasediments. S stands for Schistosity and C means Cisaillement (meaning scissor type movement in French)....

Graham Eaton / An anticlinal fold with minor thrusting in carboniferous, Culm Measures geological strata formation, Bude, Cornwall, UK. January, 2022.

Graham Eaton / Rock formation showing vertically bedded, carboniferous, Culm Measures sandstones, on the shore, Bude, Cornwall, UK. January, 2022.

Graham Eaton / Folded Silurian age turbidite sandstone and mudstone along the shore at Clarach Bay near Aberystwyth, Wales, UK. March, 2016.

Graham Eaton / Blue Lias Jurassic limestone rock with joint pattern and thin bedding. Glamorgan Heritage Coast, near Bridgend, Wales, UK. May 2019.