Talk:Seafloor depth versus age

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This new article is based in part on an existing entry on the Seafloor spreading page. It concerns the observations of the correlation between the age of the seafloor and its depth. Two theoretical treatments can explain this. One is that the entire mantle of the Earth is cooling after creation of seafloor at a spreading center; the Cooling Mantle model. The other is the cooling of a lithospheric plate of finite thickness with an almost constant base temperature; the Cooling Plate model. Alone, the current treatment on the Seafloor spreading is too detailed and too mathematical. It actually would fit better on the Mid-ocean ridge page. But because these models are mathematical treatments I think it’s best they have their own page and not appear in detail in either of the other pages. My plan then is to have this separate page for the cooling models that explain age-depth, and referring text and Wiki links on both the Seafloor spreading and Mid-ocean ridge pages. My next step will be to remove the math from Seafloor spreading that appears on the new page, add explanatory text and link to that page, then do something similar on the Mid-ocean ridge page. BrucePL (talk) 20:46, 29 January 2020 (UTC)[reply]

Feedback from New Page Review process

I left the following feedback for the creator/future reviewers while reviewing this article: Nice work!.

North8000 (talk) 13:32, 8 April 2020 (UTC)[reply]

Social science

I wAnna know more about tectonic plates 41.113.173.204 (talk) 13:51, 14 May 2022 (UTC)[reply]

Impacts of Impacts

Under the Title " Impacts " A statement is made related to the Earth not expanding. However, equations for growth and expansion of planets, and the Earth lead to an equilibrium condition at around 74.5 Ma where the surface area of the Continents is equal to the surface area of the ocean Basin floors. Both are around 148,000,000 Km^2. A total of 296,000,000 Km^2. This is equal surface areas, but it is not equal downward pressure because the material under continents had a lower density than the material under Ocean floor. Equal Downward pressure occurred at 83 Ma when the Area X Density of the Ocean floors equaled the Area x Density of the Continents. When the Area X Densities were Equal, the System was in Vertical equilibrium so neither was falling or rising. By 82 Ma, the Ratio of the Oceanic Area X Density divided by the Continental Area X Density has climbed to 1.014 527 774 to 1.0. A modest increase, but it caused the Oceans covering continents to reach a maximum depth, and start falling. By 70 Ma, the slow rate of increase in the Area X Density of the Oceans divided by the Continental Area had increased to 1.210 500 363 to 1.0. At 70 Ma, The Waters of Interior Seaways no longer covered Continents because the Ocean floors had moved down, and continents moved up. The Ocean floor Surface area had increased to around 158,252,747 km^2 while the Continental Surface area had remained around 148,000,000 km^2. The Total Had increased from 296,000,000 km^2 at 83 Ma, to 306,252,747 Km^2 in only 12 million years. The Increase was a mere 10,252,747 km^2, but it was enough to drop the Water level of all the Inland seas, and the Oceans enough to remove Inland seas from Continents. Note here that new water is continuously coming up out of the Earth, but at 82 Ma, a prior condition where water came up out of the Earth dominated Earth Growth, was reversed. This side of 82 Ma, the Volume of the Ocean Basin increase exceeded the rate that New water was coming up out of the Earth. There are many times more water inside the Earth than is atop the Earth. For a very good look at this process, view Videos by C. R. Scotese. He has at least one video showing the peak water at 82 Ma, and being gone at 70 Ma for the Western Interior Seaway which covered much of North America. Michael W. Clark, Golden CO, USA 165.127.60.132 (talk) 21:49, 29 February 2024 (UTC)[reply]

I forgot to add the current value of the Ratio of the Ocean Floor Area X Density divided by the Continental Area X Density has gradually increased to around 2.769 5055 to 1.0 from a condition of 1.0 to 1.0. This occurred in only the last 83 million years. This to me is an astounding increase, and Continents should be way up in the air, but are only a few kilometers up on average. I got to thinking about this, and came to the conclusion that there is a long time delay between when- the Earth grows larger, and when plastic rock flows out from under continents to supply the increasing surface area of the Earth.

I do not know if you would call this Iso-Dynamic Equilibrium, or call it Iso-Dynamic Dis-Equilibrium. In either case it is not Iso-static. Michael W. Clark, Golden, CO, USA 165.127.60.132 (talk) 22:07, 29 February 2024 (UTC)[reply]