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Joints in limestone, weathered to produce karstic 'clints' and 'grikes'. Early Ordovician St. George Group, Port au Port Peninsula, southwest Newfoundland (© G.S. Stockmal 1998) |
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En-echelon tension gashes. Mesozoic-Cenozoic Amaliapolis Complex, Othrys, Greece |
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Fibre-filled vein. Bray Group, Southeast Ireland |