Which piece of evidence suggests that Africa and South America formed Gondwanaland 200 million years ago? coal fields a shared ocean folded mountains land formations created by glaciers.
What evidence suggests that Africa and South America formed Gondwanaland 200 million years ago?
Answer: The existence of Gondwana was first hypothesized in the mid-1800s by Eduard Suess, a Viennese geologist who dubbed the theoretical continent “Gondwanaland.” Suess was tipped off by similar fern fossils found in South America, India and Africa (the same fossils would later be found in Antarctica).
What evidence shows that Africa and South America were once connected?
To him, the presence of identical fossil species along the coastal parts of Africa and South America was the most compelling evidence that the two continents were once joined.
How Gondwanaland was formed?
According to plate tectonic evidence, Gondwana was assembled by continental collisions in the Late Precambrian (about 1 billion to 542 million years ago). Gondwana then collided with North America, Europe, and Siberia to form the supercontinent of Pangea.
What caused South America and Africa to separate?
Magma from below the Earth’s crust began pushing upward, creating a fissure between what would become Africa, South America and North America. As part of this process, Pangaea cracked into a northernmost and southernmost supercontinent. … This supercontinent was Gondwana.
When were Earth’s landmasses first recognizable as the continents we know today?
Pangaea existed about 240 million years ago. By about 200 million years ago, this supercontinent began breaking up. Over millions of years, Pangaea separated into pieces that moved away from one another. These pieces slowly assumed their positions as the continent we recognize today.
How long ago do scientists believe the continents formed Pangaea?
Answer: Pangaea existed about 240 million years ago. Explanation: By about 200 million years ago, this supercontinent began breaking up.
What are 3 pieces of evidence for Pangea?
Alfred Wegener, in the first three decades of this century, and DuToit in the 1920s and 1930s gathered evidence that the continents had moved. They based their idea of continental drift on several lines of evidence: fit of the continents, paleoclimate indicators, truncated geologic features, and fossils.
Do South America and Africa fit together?
The east coast of South America and the west coast of Africa seem to fit together like pieces of a jigsaw puzzle, and Wegener discovered their rock layers “fit” just as clearly. South America and Africa were not the only continents with similar geology.
What are 5 pieces of evidence that support continental drift?
The evidence for continental drift included the fit of the continents; the distribution of ancient fossils, rocks, and mountain ranges; and the locations of ancient climatic zones.
What was before Pangaea?
But before Pangaea, Earth’s landmasses ripped apart and smashed back together to form supercontinents repeatedly. … Each supercontinent has its quirks, but one, called Rodinia, assembled from 1.3 to 0.9 billion years ago and broken up about 0.75 billion years ago, is particularly odd.
What if the world was still Pangea?
On Pangea, we might have less diversity of species. The species at the top of the food chain today would most likely remain there, but some of today’s animals would not exist in Pangea. They wouldn’t have a chance to evolve. Fewer animals might make it easier to travel.
Why Gondwanaland is so named?
The continent of Gondwana was named by the Austrian scientist Eduard Suess, after the Gondwana region of central India which is derived from Sanskrit for “forest of the Gonds”.
Why did Pangea break up?
During the Triassic Period, the immense Pangea landmass began breaking apart as a result of continental rifting. A rift zone running the width of the supercontinent began to open up an ocean that would eventually separate the landmass into two enormous continents.
Which part of Pangea broke apart first?
They all existed as a single continent called Pangea. Pangea first began to be torn apart when a three-pronged fissure grew between Africa, South America, and North America.
Why did no one believe Wegener’s theory?
The main reason that Wegener’s hypothesis was not accepted was because he suggested no mechanism for moving the continents. He thought the force of Earth’s spin was sufficient to cause continents to move, but geologists knew that rocks are too strong for this to be true.