Mountains And Volcanos On Stamps

Kyrgyzstan
The Seven-Thousanders of Kyrgyzstan
February 21, 2020
This minisheet features mountains with elevations greater than 7000 meters.

Ecuador
Bicentenary of the City of Riobamba
April 13, 2000
The stamp shows Chimborazo, a currently inactive stratovolcano in the Cordillera Occidental range of the Andes. With a peak elevation of 6263 m, it is the highest mountain in Ecuador.

The claim on the stamp is that Chimborazo is the highest mountain in the world. The explanation for this claim can be found on this site:

https://geology.com/records/highest...-world.shtml

"Chimborazo:
Highest Above Earth's Center

Chimborazo in Ecuador has an altitude of 6,310 meters (20,703 feet). Mount Everest has a higher altitude, and Mauna Kea is "taller." However, Chimborazo has the distinction of being the "highest mountain above Earth's center."

This is because Earth is not a sphere - it is an oblate spheroid. As an oblate spheroid, Earth is widest at its equator. Chimborazo is just one degree south of the equator. At that location, it is 6,384 kilometers (3,967 miles) above Earth's center, or about 2 kilometers (about 1.2 miles) farther from Earth's center than Mount Everest."

Peru
International Year of the Mountains
February 23, 2004
Huascarán is a mountain in the Peruvian province of Yungay, situated in the Cordillera Blanca range of the western Andes. The southern summit of Huascarán (elevation 6768 m) is the highest point in Peru.

Canada
International Year of Mountains
October 1, 2002
A booklet of 8 self-adhesive stamps, one stamp depicts Mount Logan in southwestern Yukon, close to the Yukon–Alaska border. At an elevation of 5959 m, Mount Logan is the highest mountain in Canada and the second-highest peak in North America.

This 1956, 50c airmail stamp of Mexico commemorates the 20th International Geological Congress. Depicted is the erupting Paricutin volcano.

From Wikipedia, "Paricutin is a cinder volcano located in the Mexican state of Michoacan, near the city of Uruapan and about 322 km (200 mi) west of Mexico City. The volcano surged suddenly from the cornfield of local farmer Dionisio Pulido in 1943, attracting both popular and scientific attention."