The Formation of Pangaea One theory, which explains the mass extinctions of the Permian, is the reduction of shallow continental shelves due to the formation of the super-continent Pangaea. Pangaea at the time of the Permian extinction extended from pole to pole. It was formed about 300,000 million years ago by the collision of Laurasia from the north and Gondwana from the south. The super ocean Panthalasa surrounded it. The theory of the formation of Pangaea and the mass extinction occurred over
terrestrial life forms were greatly affected. According to research the drastic climate change could have been caused by the formation of Pangaea. In 1912 Alfred Wegener while studying his theory of the continental drift, discovered Pangaea’s very existence. A combination of all of Earth’s landmasses joined together and covered 1/3 of Earth’s surface. Pangaea was f... ... middle of paper ... ...nder, C., Tsai, C., Wu, P., Speer, B. R., Rieboldt, S., & Smith, D. (1998/1999/2002). The permian period
explore Greenland. I also believe that Alfred Wegener contributed benefits to society. Alfred Wegener’s Continental Drift theory helped other scientists develop a better understanding of Earth’s geography. For example, other scientist suggested that Pangaea was separated into two pieces called Laurasia and Gondwanaland. I thought that the way Alfred Wegener died was surprising. Alfred Wegener died while doing what he loves, which was exploration. Alfred Wegener’s death was also the day after his birthday
The Jurassic period was the second segment of the Mesozoic Era. It occurred from 199.6 to 145.5 millions years ago, following the Triassic Period and preceding the Cretaceous Period. During the Jurassic Period, the supercontinent Pangaea split apart. Laurentia, the northern half, made up what would eventually form North America and Eurasia. The creation of these opened basins for the central Atlantic and the Gulf of Mexico. The southern half, Gondwana, drifted into an eastern segment that now forms
Ordovician: During this period land plants evolved. This was a huge deal. More evolved organisms developed... ... middle of paper ... ... Tertiary: Mountain building and climate changes happened often in this period, as well as the breakup of Pangaea. Mammals were very popular and they were very different and everywhere. The climate was much colder now. The animals adapted to their environment and diets; meat eaters had sharp teeth for cutting and ripping, rodents had self-sharpening front teeth
Alfred Wegener was a meteorologist and astronomer. He was the first scientist to introduce the theory of the continental drift. Wegener theorized that at one time the continents were one large landmass or Pangaea that had drifted apart. His ideas were initially rejected by other scientists. It was not until long after Wegener’s death that proof was obtained and his theory verified. The Life of Alfred Wegener Alfred was born in Germany in 1880 and led a very busy life. He received a PhD in astronomy
Alfred Wegener was the youngest of five children, and was born on November 1, 1880. His father was an evangelical minister who ran an orphanage. Wegener grew up in Berlin Germany, and as a young man always dreamed of exploring Greenland, and had an interest in meteorology at a very young age. Alfred attended Friedrich Wilhelms University where he obtained his degree, and later his Doctorates in Astronomy, but after he graduated, most of his focus was on the study of meteorology. In 1905 Alfred
ORDOVICIAN PERIOD The Ordovician Period is the second period of the Paleozoic Era and began 485.4 million years ago and ended 443.4 million years ago (when the Silurian Period began). Four continents were present and separated by three main oceans. Laurentia was composed of present-day North America, part of Scotland, and Greenland and was near the equator. Siberia-Kazakhstan was east of Laurentia, slightly north of the equator. The Iapetus Ocean separated these two masses on the south from the
INTRODUCTION Germain geophysicist and meteorologist Alfred Wegner has concocted a theory of monumental standards insisting on the existence of a continental drift. Mr. Wegner’s theory suggests that about three-hundred million years ago all of earth’s land masses were in a constant state of movement. These masses, we now know today as continents, were collided to form one supercontinent, called Pangea. This Greek word is can be translated to Pan-"all”, Gaia -"earth". In Wegner’s Pangea, Continents
Evolution is the process by which different kinds of living organisms are thought to have developed and diversified from earlier forms during the history of the earth (Google). Scientists have many evidences to prove Evolution. One of these evidences is rock layers. Rock layers are beds of sedimentary rock, consisting of one type of matter, and can usually have fossils found in them. Rock layers are an evidence of evolution because they show the development of life through fossils, show how rock
Precambrian Geologic The Precambrian era is about 90% of the earth’s geologic life. It refers to all geologic time before 600 million years ago. During the Precambrian era, the earth formed along with the oceans and atmosphere. Originally, the earth was in a molten state, but as it cooled down, it developed a hard crust and oceans that developed water vapor to form an atmosphere. About five hundred million years after the earth was formed, small continents started to form. The plate tectonics also
Alfred Lothar Wegener was born on November 1, 1880 and earned a Ph.D in astronomy in 1904. However Wegener had always been fascinated in climatology and meteorology. (According to ucmp.berkeley.edu) In the autumn of 1911, Wegener was browsing in Marburg university’s library and found a scientific paper that listed fossils of identical animals and plants found on opposite sides of the Atlantic ocean. With further searching he was able to prove that his theory of “Continental Drift” could have been
Pangaea German geophysicist Alfred Wegener had thought of a theory known as continental drift. He had believed that the continents are mobile and move over time, drifting on earth’s surface. It is thought that the continents have been one continent at some point in the world, combined. Pangaea, although highly controversial, is a legitimate moment in history. It is sought to be the countries were once one at some point. Alfred Wegener noticed that the countries seemed to fit together like a puzzle
perhaps, where they were before? It’s simple really, Pangaea, the great and almighty supercontinent. However, if Pangaea was so great, then why did it break apart? More suitably, why did it form in the first place? Well, let’s find out, why the great Pangaea formed, and how it drifted apart. In the early years, long before humans roamed the earth, there was a protocontinent it’s name was Gondwana. And of course Gondwana wasn’t as huge or mass as Pangaea was, that’s because Gondwana wasn’t alone. In fact
OCEANIC CRUST Introduction: Oceanic crust is the outermost layer of Earth above the mantle. It is the part of the Earth’s crust which makes up the Ocean Floor. It is basically the uppermost layer of the oceanic portion of a tectonic plate and lies on top of the solidified and uppermost layer of the mantle. Division: It can be partitioned into two types: • Continental crust • Oceanic crust Composition: The oceanic crust is more dense, thin and simpler in structure as compared to the continental
Mother earth has gone through a lot of changes throughout its four and a half billion-year existence. Earth has seen many different climates and many different species. Because of these changes geologists have broken earths history into different time periods. One such time period was the Pennsylvanian time period. The Pennsylvanian time period is a subdivision of the Carboniferous period. The Pennsylvanian period saw the introduction of many different species that are still present today along with
can reject hypotheses until substantial evidence is found. The continental drift hypothesis was first introduced by Alfred Wegener in 1914. He suggested that at one stage in time, all of the continents were combined together as one, which he named ‘Pangaea’, and they eventually drifted apart to be in the positions they are at today (see figure 1.0 below). This came from the observation that the coastlines of the continents could be combined together to make one, like a jigsaw puzzle, specifically the
connected in a supercontinent called Pangaea, which is a Greek word were pan “entire” + Gaia “earth”. The Pangaea started at the South Pole and the earth’s rotation eventually caused it to break up, and this was according to Wegener’s theory. Throughout his research traces of fossil evidence were found in support of his theory, in addition to that he came up with ideas that as to how continental drift worked in the building of the world’s mountain ranges. The Pangaea looks like the diagram below: Most
Crosby spans time and space in his work, Ecological Imperialism, making sense of meta-historical time frames from epoch to epoch, from Pangaea to near present, concerning everything from microbes to marinheiros. Crosby’s work stands out in the sea of global histories of European expansion, taking on a far more expansive perspective on the population collapse and role of disease in the conquest of the New World to delve deep into the ecological history of the earth as we know it now, as well as it
Pangaea or Pangea is the name given to the supercontinent that existed during the Paleozoic and Mesozoic eras, before the process of plate tectonics separated each of the component continents into their current configuration. The movement of Earth’s tectonic plates formed Pangaea and ultimately broke it apart. Physiologic density- is the number of people per unit area of arable land which