Georgrapy Patterns

In 1596- Abraham Ortelius took note that the coastlines of the continents seemed to be too fitting together. He initiated a theory that stated that the continents were probably joined at one point in time and were torn apart between Europe and Africa. In the year of 1912, Alfred Wegener stated that the continents were once joined in a supercontinent called Pangea.

There is evidence that the shape of the continents coastlines were once connected. In Figure one I see that some continents coastlines look like they would fit together perfectly. It is almost like they are puzzle pieces. A good example of this would be the eastern coastline of South America and the western coastline of Africa. I can imagine these pieces of land sliding together perfectly. Another example is, Australia’s southern coastline rotated to Africa’s southeast coastline is. The shape of the continents coastlines is evidence that all of the continents were connected at some point because the coastlines could fit together.

Geologists believe that over 200 million ago, continental drift carried the Old World and New Worlds apart, splitting North and South America from Eurasia and Africa, eventually creating two separate biological worlds (Crosby, 2009). In 1491, the Atlantic and Pacific Oceans were nearly impassable barriers, and America might as well have been on another planet from Europe and Asia (Morris, 2011). However, when Christopher Columbus and his fellow voyagers made land in the Bahamas in 1492, the plant, animal, and bacterial life of these two worlds began to mix, and the world as we knew it would be forever changed (McNeil, 2008).

Between 280 million and 225 million years ago, the earth’s previously separated land areas became welded into a landmass called Pangaea. About 120 million years ago, due to the continental drift, this landmass began to separate. It split the old world and the new world apart, which dividing North and South America from Eurasia and Africa. The separation lasted for million years that it fostered divergent evolution. The new world and the old world’s biological evolution followed individual paths, becoming two separate biological worlds. However, after 1492, human voyagers reversed this tendency. In October 1492, Christopher Columbus and his crew landed in Bahamas. After Columbus arrived in

According to the theory of “Pangaea,” the world was once a single mega-continent that contained all the dry land about 225 million years ago. North America was shaped by the majestic Canadian Shield about 10 million years ago.

Millions of years ago according to scientist the whole world was one large mass called Pangea. When this mass began to split, it divided the Americas from the Eastern World along with the people on it. This resulted in tens of thousands years apart from one another which led to different developments on each continent. After all these years though a man named Columbus’s discovers the Americas in 1492. As soon as he took

About 200 million years ago there was one big continent called Pangaea. They believed that, this landmass began to separate. They believed that the Atlantic Ocean formed, dividing Africa and Eurasia from the Americas. Over the next several million years plants and animals changed and made to separate biological worlds. It wasn’t until Christopher Columbus and his crew sailed to the Americas in October 1492, they started interacting with each other.

About 225 million years, all of the world’s land was contained in one supercontinent, named Pangea. This supercontinent would eventually separate itself into the continents that are known today, due to continuous movement of the earth’s tectonic plates, which led to major shifting and folding of the earth’s crust. This shifting formed many of the mountain ranges that exist today, such as the Appalachians and the Rocky Mountains. However, the time of Pangea’s separation into multiple continents and the time of the formation of the mountain ranges aren’t synonymous; for instance, the Appalachians were most likely formed before Pangea’s separation. About some 2 million years ago, a Great Ice Age befell the earth, which caused a

Old worlds and new worlds was carried by the drift that was the continental, splitting from Eurasia and Africa is

Geologists believe that between 280 million and 225 million years ago, the earth’s previously separate land areas became welded into a landmass called Pangaea. About 120 million years ago, they believe, this landmass began to separate. As this happened, the Atlantic Ocean formed, dividing the Americas from Africa and Eurasia. Over the course of the next several million years in both the Americas and in Afro-Eurasia, biological evolution followed individual paths, creating two primarily separate biological worlds. However, when Christopher Columbus and his crew made land in the Bahamas in October 1492, these two long-separated worlds were reunited. Columbus’ voyage, along with the many voyages that followed, disrupted much of the biological segregation brought about by continental drift.

Plate tectonics is the scientific theory that attempts to explain the movements of the Earth's lithosphere that have formed the landscape features we see across the globe today” (Briney). Geology defines “plate” as a large slab of solid rock, and “tectonics” is part of the Greek root word for “to build.” Together the words define how the Earth’s surface is built up of moving plates. The theory of plate tectonics dictates that individual plates, broken down into large and small sections of rock, form Earth’s lithosphere. These fragmented bodies of rock move along each other atop the Earth’s liquid lower mantle to create the plate boundaries that have shaped Earth’s landscape. Plate tectonics originated from meteorologist Alfred Wegener’s theory, developed in the early 20th century. In 1912, he realized that the east coast of South America and the west coast of Africa appeared to piece together like a jigsaw puzzle. He further examined the globe and deduced that all of Earth’s continents could somehow be assembled together and proposed the idea that the continents had once been linked in a single supercontinent called Pangaea. To explain today’s position of the continents, Wegener theorized that they began to drift apart approximately 300 million years ago. This theory

. originally Earth had only one super continent, this continent split into several smaller ones, one of which would later be called North America

The Earth began several billion years ago, but just six thousand years ago history began to be recorded by people, and only 500 hundred years ago, European conquerors set off into the world, forever changing the balance of the entire planet. 225 million years ago the supercontinent began to drift apart and formed Eurasia Africa Australia and the Americas. It opened up the Atlantic and Indian Ocean as well as narrowing the Pacific Ocean. However land masses and coastal ranges developed at separate times . Basic geography of North America was formed 10 million years ago. The modern geography of the earth however was created by the great ice age 2 million years ago.

Plate tectonics move land masses around, and occasionally, interactions between different plates causes new land to form, and can even join two separate continents together, changing ocean currents and causing climate change. This is evident in the collision of the North and South American continents, which created the Isthmus of Panama, and separated the Pacific and Atlantic Ocean. Approximately 15 million years ago, the North and South American continent was cut off from each other by a seaway about 200 km wide. Over time, the South American plate collided with the Caribbean and Cocos plate, and gradually closed the exchange of the Caribbean and Pacific waters 3-4 million years ago. This resulted in several consequences.

Another thing that interests me is that people figured that out a long time ago when it was really hard to navigate.I don't get how by looking at a map and seeing that southamerica could probably fit together with Africa could change everything that people