{{courseNav.course.mDynamicIntFields.lessonCount}} lessons With this mechanism, water from great depth can be degassed to the surface. Where did the oceans come from according to evolutionists? This, according to Hess, proves the fact that sea- floor spreads along the mid-oceanic ridges and the expand­ing crusts (plates) are destroyed along the oceanic trenches. For decades many planetary scientists believed that the ocean's water may have come from a rain of comets (so to speak) laden with water. As time progressed and the planetary interior continued to warm, the composition of the gases escaping from within Earth gradually changed the properties of its atmosphere, producing a gaseous mixture rich in carbon dioxide (CO2), carbon monoxide (CO), and molecular nitrogen (N2). 6. 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But Earth itself is much older than our oceans. Mckenzie and Parker discussed in detail the mechanism of pate motions on the basis of Euler’s geometrical theorem in 1967. There are several theories about the origin of the seas, but no single theory explains all aspects of this puzzle. In this article we will discuss about the origin of ocean basins based on the plate tectonic theory. These elements are naturally attracted to iron and so the vast majority of them were pulled into the planet’s iron core early in its history. Dr.Antony Joseph, in Investigating Seafloors and Oceans, 2017. What we do know is that the average level of the sea surface relative to the continental land has remained relatively constant across nearly four billion years. Nature has plenty of time. This means there is a balance between the water in the oceans and that stored up in the mantle. Accordingly, how creatures get and use food matches how Scripture describes our world. One of the Suns in our system exploded at the point when most of the material had been converted to oxygen. The Atlantic and Indian Oceans are spread­ing (expanding) very sluggishly i.e. Because Earth is 'just right' in so many ways, it's often called the 'Goldilocks Planet'. So far as anyone can tell, it may merely have rained as it rains today. Thus, the detailed study of plate margins is not only desirable but is also necessary. Numerous theories have been put forth from time to time to explain the origin of ocean tides. His concept was based on the research findings of numerous marine geologists, geochemists and geophysicists. (iii) The Indian Ocean is expanding at the rate of 1.5 to 3 cm per year (total expansion being 3 to 6 cm/year). Why is it impossible? Isacks and Sykes confirmed the ‘paving stone hypothesis’ in 1967. The more the material  - the greater the pressure and temperature - and faster the fusion reaction. Leviathan: Legend, Croc, or Something Else? There is little information on the early history of Earth’s waters. - Definition, Process & Examples, CSET Science Subtest I - General Science (215): Practice & Study Guide, Introduction to Environmental Science: Help and Review, Ohio Assessments for Educators - Middle Grades Science (029): Practice & Study Guide, Human Anatomy & Physiology: Help and Review, DSST Health & Human Development: Study Guide & Test Prep, Middle School Life Science: Help and Review, UExcel Anatomy & Physiology: Study Guide & Test Prep, UExcel Earth Science: Study Guide & Test Prep, Prentice Hall Biology: Online Textbook Help, Middle School Life Science: Homework Help Resource, Middle School Life Science: Tutoring Solution, Introduction to Physical Geology: Help and Review. As this differentiation, or geological separation of layers by density was occurring, there was also much releasing of gases onto Earth's surface through volcanic activity, a process called outgassing. Content Guidelines 2. just create an account. We can only speculate how much water might still be locked up at these great depths. But given how many barren rocks there are in the galaxy, Earth’s abundant oceans raise the question of where all that water came from. Earth’s water isn’t heavy enough to have come from comets. Finally, unlike planetary scientists, geochemists have long argued that the Earth’s oceans don’t come from captured icy comets because they contain different amounts of “heavy” hydrogen. Here two plates pass or slide past one another along transform faults and thus crust is neither created nor destroyed. In fact, oceanic plates split apart along the mid-oceanic ridges and move in opposite directions (fig. It’s clear this was a real creature, but what was it? The age of magnetic stripes, the rate of sea floor spreading and the time of drifting of different conti­nents are calculated on the basis of above facts. Decisions Revisited: Why Did You Choose a Public or Private College? Earn Transferable Credit & Get your Degree, Ocean Basins: Definition, Formation, Features & Types, Major Plates of the Lithosphere: Earth's Tectonic Plates, Earth's Internal Layers: Crust, Mantle & Core, Plate Boundaries: Convergent, Divergent, and Transform Boundaries, What is Chemical Weathering? The right size, the right composition, the right place… There's certainly nowhere else I'd rather be! For this lesson, we'll discuss the formation of the oceans using both theories so you can see how each method could have contributed to the process. The early atmosphere is thought to have been highly reducing and rich in gases, notably in hydrogen, and to include water vapour. Content © 2020 Institute for Creation Research, Secular Science Struggles to Explain Origin of Earth’s Water. There are several theories about the origin of the seas, but no single theory explains all aspects of this puzzle. In fact, scientists now believe that the Earth may have lost mass rather than gained it during early violent asteroid impacts, a process known as collisional or impact erosion. H. Hess postulated the concept of ‘plate tec­tonics’ in 1960 in support of continental drift. According to this theory, the ocean had its origin from the prolonged escape of water vapor and other gases from the molten igneous rocks of the Earth to the clouds surrounding the cooling Earth. The above data was taken from:  http://csep10.phys.utk.edu/astr162/lect/sun/composition.html. It's also a good size. They postulated ‘a paving stone’ hypothesis wherein the oceanic crust was consid­ered to be newly formed at mid-oceanic ridges and destroyed at the trenches. This article was originally published on The Conversation. 247 lessons Cite this article: Frank Sherwin, M.A. Lithosphere is internally made of rigid plates (fig. Theory of Plate Tectonics and continuing dynamics of ocean basins. Alternate stripes of positive and negative magnetic anomalies are found on either side of the mid-oceanic ridges. The rigid lithospheric slabs or rigid and solid crustal layers are technically called ‘plates’. One suggests that Earth’s water might have been captured from asteroids and comets that collided with the planet. Tides are, in fact, the most important of all the oceanic movements because tidal currents affect the whole water mass from the sea surface to the bottom. Morgan and Le Pichon elaborated the various aspects of plate tecton­ics in 1968. Before uploading and sharing your knowledge on this site, please read the following pages: 1. First, Earth is in a 'sweet spot' in the solar system. In some places the ocean is deeper than Mount Everest is high; for example, the Mariana Trench and the Tonga Trench in the western part of the Pacific, The seas cover more than two-thirds of Earth’s surface, yet only 210,000 of the 1,500,000 species that have been described are marine animal, algal, and plant species.

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