Continental drift
alfrid wegner
If by major landmasses is meaning continents, then there are 7 major continents.
Mountain chains are formed when continents collide.
Pangea (or Pangaea) was a "supercontinent" that scientists believe incorporated almost all of the earth's landmasses. It began to break apart about 200 million years ago, and eventually the modern continents and Atlantic and Indian Oceans were formed.
Alfred thought that mountain were formed by two continents smashing together with such force that the land was forced up.
alfrid wegner
If by major landmasses is meaning continents, then there are 7 major continents.
The Archean and Proterozoic continents formed through a process called accretion, where smaller landmasses collided and merged over time. This resulted in the gradual assembly of larger continental blocks through volcanic activity, mountain-building processes, and the accumulation of sediments. This formation eventually led to the development of the Earth's early supercontinents, such as Kenorland and Rodinia.
Midocean ridges are areas where continents broke apart. Midocean ridges are closest to the landmasses in younger oceans. One example where a midocean ridge intersected a landmass is the Arabian sea, which was formed by the pulling apart of the Arabian Peninsula and Africa.
The ancient continent that contained all of the landmasses is called Pangaea. It existed during the Late Paleozoic and early Mesozoic eras, approximately 300 to 175 million years ago. Over time, the landmasses drifted apart and formed the continents we have today.
The Himalayas were formed through the collision of the Indian Plate and the Eurasian Plate. This collision began around 50 million years ago and is ongoing, resulting in the uplift of the Himalayan mountain range. The immense pressure and forces created by the two plates pushing against each other caused the land to rise and form the highest mountain range in the world.
continents where formed by under water y=volcanos
his Mother convinced him to form a hypothesis about this.
nebular hypothesis
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Annapurna, like all other mountains in the Himalayas, were formed by tectonic forces pushing landmasses upwards.
Pangaea is the supercontinent that once formed from all the continents.