Mountains are geological features that are formed through various processes over long periods of time. The age of mountains can vary significantly depending on their specific formation history and location. Here are a few examples:
Fold Mountains: Fold mountains, such as the Himalayas, Alps, or Andes, are formed by the tectonic collision of two continental plates. The age of these mountains can range from tens of millions to hundreds of millions of years. For example, the Himalayas began forming around 70 million years ago when the Indian subcontinent collided with the Eurasian plate.
Volcanic Mountains: Volcanic mountains, like Mount Fuji in Japan or Mount Kilimanjaro in Tanzania, are created by volcanic activity. Their age can vary depending on the volcanic activity in the region. Some volcanic mountains are relatively young, forming within the past few million years, while others can be much older.
Plateau Mountains: Plateau mountains, such as the Colorado Plateau in the United States or the Deccan Plateau in India, are formed by uplift and erosion over long periods. The age of these mountains can span from tens to hundreds of millions of years, as they are often the result of gradual geological processes.