Dike breccia - impact breccia dikes

System of breccia dikes cutting through Liassic limestones. Azuara impact structure (Spain).

Breccia dike cutting through grit-brecciated Muschelkalk limestone. Azuara impact structure.

Breccia dike, Rochechouart impact structure (France).

Breccia dike in Jurassic limestone. Rubielos de la Cérida impact basin (Spain). Note the sharp-edged breccia clasts and the sharply fragmented host rock excluding any karstification features.

Prominent breccia dike cutting through Palaeozoic siltstones. Azuara impact structure.

Microscopic breccia dike in a quartzite clast of a strongly shocked polymictic dike breccia (breccia-dike generations). Azuara structure. Photomicrograph, plane light; the field is 5 mm wide. Note that the dikelet branching off from the principal dike cuts several quartz grains.

Impact breccia pocket in Muschelkalk limestone. Rim region of the Rubielos de la Cérida impact basin near Olalla.