Final answer:
The volcano that formed in a Mexican cornfield in 1943 is Paricutin. It provided an exceptional case for studying the development of a volcano from its birth to its extinction.
Step-by-step explanation:
The famous volcano that formed in a Mexican cornfield in 1943 is Paricutin. Paricutin is known to be a cinder cone volcano in Mexico that emerged suddenly from a cornfield.
This event provides a rare opportunity for scientists to study the birth, life, and death of a volcano.
Mexico's unique geological setting, with the presence of three tectonic plates, creates a highly seismically active region, making it the site of numerous volcanoes such as PopocatĂ©petl and IxtaccĂhuatl.
The rapid formation of Paricutin offered valuable insights into volcanism and the geological processes that underlie the formation of volcanic features.