In summary, Pangaea was the supercontinent that contained all of Earth's landmass . The word Pangaea comes from the Greek words pan- , meaning "all ," and -gea , meaning "earth . "
Here we tell you a little about its origin, and about Alfred Wegener , who advocated for its existence; he theorized about its formation and separation in 1912.
Pangea and its characteristics
Pangea is the name of Earth's first supercontinent. Pronounced phangea in Greek, it translates as "all" and "land." Its name was coined by Alfred Wegener in 1912, who was the main proponent of the theory of continental drift.
It is believed that the original shape of Pangaea was a U- or C-shaped landmass located at the equator. Due to Pangaea's enormous size, it was assumed that the Earth's interior regions were arid due to a lack of moisture. Animals living on the supercontinent could travel freely between its extremes without barriers.
Pangaea had a concave portion, called the Tethys Sea , which contained a smaller sea. Besides Panthalassa , the only sea surrounding Pangaea, the enormous landmass was surrounded by desert due to a lack of moisture. This was because most of Pangaea's interior did not have easy access to moisture from the ocean.
How was Pangea formed? And how was it divided?
It was formed by the combined movement of tectonic plates 335 million years ago during the Paleozoic Era . At that time, most of the planet's landmass was contained within Pangaea. It subsequently broke apart 175 million years later, with parts separating and forming new continents. This process continued until many of today's major landmasses were formed, a process that is still ongoing.
According to geological, biological, and physical records, the Earth's crust solidified 4 million years ago. Since then, many significant geological changes have occurred, providing a broad perspective on the events that took place until Pangaea formed. Approximately 700 million years ago , at the end of the Precambrian period, two paleocontinents called Baikalia and Panafrica existed on the planet . Eventually, they merged to form the single supercontinent Pangaea around 500 BC. Around 400 BC, Europe and North America were connected as a single landmass.
The landmass known as Gondwana formed nearly 230 million years ago and included most of Asia, Africa, Australia, South America, and India . It also contained Europe and North America at that time. All these continents joined together in a nearly identical fashion. Some minor changes have occurred since then due to subsequent orogenic processes. Pangaea, the supercontinent of the Mesozoic Era, broke apart in four stages 65 million years ago , according to various sources.
What happened to the division of Pangea?
The Atlantic Ocean formed between Africa and North America when the landmass between Laurasia and Gondwana broke apart . Subsequent divisions between North and South America resulted in further ocean expansion. The separation of Africa, Antarctica, Australia, and South America from India occurred when the supercontinent of Gondwana split. At the same time, northern India was separating from southern India. This was caused by various breakups and movements within the continents of Gondwana.
When Africa drifted north, the Mediterranean Sea formed. This also led to the closure of the eastern end of the Tethys Sea. At the same time, South America and Africa separated, reducing the size of the Tethys Sea. By the end of the era, Greenland had separated from Europe and become a separate landmass. Africa and South America had drifted apart, as had Australia and Antarctica. India was almost halfway to the equator; it had separated from South America. North America had also separated from Europe.
Who proved its existence?
Alfred Wegener was a German meteorologist who compiled data from various scientific fields to support his theory of continental drift. He published his findings in a book in 1915 , which caused an earthquake-like upheaval in the foundations of Earth science. Many people considered his theory highly controversial at the time.
Looking at an atlas in 1910, Wegener considered the possibility that the shapes of the continents fit together by coincidence. He later concluded that they did fit together to form a single primordial supercontinent known as Pangaea , which is the Greek word for 'all the Earth'. The solid landmass of Pangaea supposedly broke apart into the present-day continents approximately 250 to 200 million years ago.
The idea behind the thesis is related to the three fields of science: biology, paleontology and geology. Explained the relationship between species on continents separated by oceans; it also matched mesosaur fossils found in South Africa and Brazil. The thesis also substantiated similar geological formations found on different continents, suggesting that the Cape Fold Belt of the Western Cape of South Africa had previously been connected to the Sierra de la Ventana in Argentina.
Leading scientists strongly opposed Wegener's theory because it did not suggest what specific force caused the continents to drift.. Wegener admitted that these criticisms were fair; he wrote in 1929 that 'Newton's theory of continental drift' had not yet been born. It took another 30 years after Wegener's death, at age 50, for his theory to become official. This is the year that the geophysical community confirmed the drift of the continents through plate tectonics.
What was life like on Pangea?
The climate was warm, and life was completely different from what we know today. Reptiles like Shringasaurus indicus , better known as the Allokotosaurus , lived in what is now India and was characterized by having two frontal horns and a body length of between 3 and 4 meters. The first beetles and cicadas also appeared, and many reptiles flourished in the Early Triassic. Dinosaurs are also believed to have existed on Pangaea, and they may have been the first to walk on land.
I hope this information about Pangea has been useful to you.