Skip to main content Accessibility help

We use cookies to distinguish you from other users and to provide you with a better experience on our websites. Close this message to accept cookies or find out how to manage your cookie settings.

Close cookie message
×
  1. Home
  2. Search

Refine search

Refine search

Access:
Content type:
Publication date:
Apply   From and To filters
Subject: Show more
Journals Show more
Publishers: Show more
Societies Show more
Series: Show more
Collections: Show more

Actions for selected content:

Select all | Deselect all
  • View selected items
  • Export citations
  • Download PDF (zip)
  • Save to Kindle
  • Save to Dropbox
  • Save to Google Drive

Save Search

You can save your searches here and later view and run them again in "My saved searches".

Please provide a title, maximum of 40 characters.
Cancel
×

1 results

  • 15 - Formation of Earth, Early Tectonics, and Continental Growth

  • Haakon Fossen, Universitetet i Bergen, Norway, Christian Teyssier, University of Minnesota
  • Book:
    Plate Tectonics
    Published online:
    24 January 2025
    Print publication:
    05 December 2024, pp 371-392

  • Summary

    Chapter 15 deals with the exciting first part of our planet, the time from which we have no actual rocks preserved. it summarizes our current understanding of how the planet first formed after formation of the solar system, how dust, stones, and gases collected into planetesimals that rapidly clustered to form planets. The importance of a molten planet Earth being hit by a Mars-size object is underscored, causing the formation of the Moon. In the following, Earth rapidly differentiated into a metallic core and a silicate mantle (magma ocean) that solidified from the bottom up in only a few million years. During solidification the magma ocean concentrated water into the shallow mantle, which set the stage for making the Earth’s oceans and generating a dynamic planet from its core to its surface. Emphasis is put on the information contained in Hadean zircon grains preserved in younger rocks, which has led some geologists to propose that the Hadean landscape resembled present-day Earth, with the presence of continents and oceans, and even the existence of some form of plate tectonics.