Show Us Geology On Stamps. Geologic Formations, Etc

Colombia 2020 Malpelo Fauna and Flora Sanctuary
Malpelo Island is located in the eastern Pacific Ocean, about 500 km off the Colombian mainland. It is the subaerial portion of the Malpelo Ridge, an elevated and isolated piece of Miocene oceanic crust near the northern edge of the Nazca Plate.

Chile 2008 Torres del Paine National Park
Cordillera Paine is a mountain group in Torres del Paine National Park in Chilean Patagonia (51 degree South). It is formed by intrusion from a shallow magma chamber during Miocene time. The steep cliff faces of the peaks are eroded from the vertically jointed granitic rocks.

Chile 2007 All Ways Surprising
Valle de la Luna is located in the Atacama Desert, a plateau (elevation 2550 m) in the Cordillera de la Sal in northern Chile. It is a small depression constituted by Miocene sedimentary rocks with intercalations of salt, gypsum, chlorate, borate and clay, that have been carved into moon-like landscape.

Ecuador 2002 Tourism - Chimborazo Province
Cerro Cubillin (elevation 4711 m) is a peak in the Cordillera Oriental (also known as the Cordillera Real), a part of Ecuadorian Andes. It comprises Paleozoic metamorphic rocks which were thrusted and uplifted due to plate collision during Mesozoic time.

Panama 2008 Tourism
Sarigua National Park is located on the Pacific Coast of Panama north of the River Parita. The desolate landscape is caused by extensive erosion of the salty ground with very limited vegetation.

Costa Rica 2009 Natural Wonders
Cerro Chirripó (elevation 3820 m) is the highest peak in Cordillera de Talamanca, a mountain range uplifted due to emplacement of the Cocos Ridge underneath the Caribbean Plate. This gabbro outcrop of Late Miocene age is flanked by diorite intrusion.
Poás Volcano (elevation 2697 m) is an active stratovolcano in the Central American Volcanic Arc, a chain of volcanoes formed by subduction of the Cocos Plate underneath the Caribbean Plate. The basaltic-andesitic volcano has erupted 40 times since 1828 and has two crater lakes near the summit.

Costa Rica 2019 Chirripó National Park
Los Crestones (elevation 3715 m) are located on the southern flank of Cerro Chirripó (see the post above). They are glacier-carved gabbro peaks standing above the older tholeiite lava units.

Trinidad and Tobago 2021 Landscapes
Gasparee Caves is a natural system of caverns, pools, and sinkholes on the island of Gaspar Grande, off the northwestern coast of Trinidad. This and many other cave systems on the island are formed by karstification of Tertiary limestone formations.
The Pitch Lake in La Brea in southwest Trinidad is the largest natural deposit of asphalt in the world, estimated to contain 10 million tons. It contains biodegraded crude oil migrated from its Upper Cretaceous marine source rocks deeply buried in the basin.

Barbados 2014 The Seven Wonders of Barbados
The Music Rocks is a group of sea stacks off the coast at Bathsheba. Wave erosion reduced a Miocene sea cliff to these coralline limestone outcrops of various sizes and odd shapes.

Saint Lucia 1983 Commonwealth Day
The Pitons are two Pleistocene andesitic volcanic plugs located on the southwestern coast of Saint Lucia. They stand on the western flank of Qualibou, one of the main volcanic centers of the Lesser Antilles Volcanic Arc which stretches from Grenada to Saint Kitts.

Montserrat 2005 10th Anniversary of Soufriere Hills Volcano
Soufriere Hills is an active, andesitic stratovolcano in the Lesser Antilles Volcanic Arc, created by subduction of the South American Plate underneath the Caribbean Plate. Phreatic eruption in 1995 followed by the collapse of lava dome resulted in pyroclastic flow, ash venting, and mudflow that formed Tar River Delta.

Dominican Republic 2015 National Parks
Loma Nalga de Maco is located in the Central Cordillera on the island of Hispaniola. The core of this mountain range is composed of Jurassic oceanic crustal fragments which were obducted along the northern edge of the Caribbean Plate during Late Cretaceous.

Cuba 2006 España 06 World Philatelic Exposition
Sierra Maestra runs across the southeastern coast of Cuba. It is composed mainly of Paleogene volcanic arc sequence of breccias and tuffs. Deformation and igneous intrusion occurred during the final stages of subduction and collision of the Caribbean Plate with the North American Plate.

Bahamas 1995 Tourism
Eleuthera Cliffs is located on the northeastern edge of the Great Bahamas Bank, a Cretaceous carbonate platform that makes up much of the Bahama Archipelago. The outcrops expose Quaternary aeolianite formation and a small portion of their underlying limestone strata.

Mexico 2009 Preservation of the Polar Regions and Glaciers
El Popocatépetl (5426 m, active) and El Iztaccíhuatl (5230 m, dormant) are located on the southeastern outskirts of Mexico City. These Quaternary volcanoes are composed of andesite and decite and are formed as a result of subduction of the Cocos Plate underneath the North America Plate.