File:Dating Planetary Core Formation.png
From Wikimedia Commons, the free media repository
Jump to navigation
Jump to search
Size of this preview: 800 × 450 pixels. Other resolutions: 320 × 180 pixels | 640 × 360 pixels | 1,024 × 576 pixels | 1,280 × 720 pixels | 1,920 × 1,080 pixels.
Original file (1,920 × 1,080 pixels, file size: 159 KB, MIME type: image/png)
File information
Structured data
Captions
Summary[edit]
DescriptionDating Planetary Core Formation.png |
English: Hafnium-182 radioactively decays to tungsten-182 with a half-life of about 9 million years. This system can be used to date when core formation occurred for a particular planet. Hafnium is lithophilic (rock loving) and tungsten is siderophilic (iron loving). Early in a planet's history it would have been undifferentiated, meaning that it would not have been layered according to density (with the densest material being towards the interior of the planet). If differentiation (core formation) occurred relatively early in a planet's history then hafnium would not have much time to decay to tungsten. Being that hafnium is lithophilic, it would remain in the mantle (or outer layers of the planet). Then after some time, hafnium would decay to tungsten. On the other hand, if differentiation (core formation) occurred later in a planet's history, then hafnium would have decayed to tungsten. Being siderophilic, tungsten would move towards the interior of the planet along with iron. In this scenario, not much tungsten would subsequently be present in the outer layers of the planet. As such, by looking at how much tungsten is present in the outer layers of a planet, the time of differentiation (core formation) can be quantified. |
Date | |
Source | Own work |
Author | Viranga13 |
Licensing[edit]
I, the copyright holder of this work, hereby publish it under the following license:
This file is licensed under the Creative Commons Attribution-Share Alike 4.0 International license.
- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
- share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 14:45, 24 September 2019 | 1,920 × 1,080 (159 KB) | Viranga13 (talk | contribs) | User created page with UploadWizard |
You cannot overwrite this file.
File usage on Commons
There are no pages that use this file.
File usage on other wikis
The following other wikis use this file:
- Usage on en.wikipedia.org
- Usage on fr.wikipedia.org
Metadata
This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
Horizontal resolution | 56.69 dpc |
---|---|
Vertical resolution | 56.69 dpc |