View of Cape Town from Robben Island

Towering the city, the Lower Paleozoic sandstone layers of Table Mountain rise over the metamorphic formations of the Malmesbury group (Neoproterozoic), intruded by Peninsula granites (630 Ma) (Photo P. Rossi)

Marquesas Archipelago, French Polynesia

Ua Pou phonolitic peaks (Ph. Rossi)

Argentine

Acongagua mountain seen from the Mendoza Plain (Ph. Bouysse)

Argentina

Baño del Inca, Central Andes (Ph. Bouysse)

Greece

Conglomeratic formations of The Meteora, Thessaly (Ph. Bouysse)

China

Hua Shan Mountains, Jurassic granite (Ph. Rossi)

Greece

Partial view of the caldera of Santorini, Cyclades (Ph. Bouysse)

Argentina

Espinazo del Diablo, Jujuy province, Central Andes (Ph. Bouysse)

Australia

Uluru / Ayers Rock, arkoses and conglomerates (Ph. Rossi)

Argentina

Salinas Grandes (Ph. Bouysse)

Chile / Bolivia

Parinacota volcano (Ph. Bouysse)

New Zealand

Wai-o-Tapu (Rotorua), geothermal springs (Ph. Rossi)

Colombia

Nevado del Ruiz, Central Cordillera (J. Gomez T.)

Iran

South side of the Sheikh Syncline, Kopet Dagh (Alexandra Robert)

Malta

Gozo Island (Ph. Bouysse)

Iran

Damavand volcano (Ph. Rossi)

Colombia

Mavecure Hills, Amazon rainforest, proterozoic granites, (J. Gomez T.)

Argentina

Cerro de 7 colores, Purmamarca, Andes (Ph. Bouysse)

Turkey

Cappadocia, Fairy Chimneys ignimbritic formations (Ph. Bouysse)

Canada

Canmore surroundings (Alexandra Robert)

South Africa

Proterozoic Quartzites (Ph. Rossi)