File:NASA SP-56 Microfossils from Precambrian chert 2.jpg
Jump to navigation
Jump to search
![File:NASA SP-56 Microfossils from Precambrian chert 2.jpg](http://upload.wikimedia.org/wikipedia/commons/thumb/3/3a/NASA_SP-56_Microfossils_from_Precambrian_chert_2.jpg/506px-NASA_SP-56_Microfossils_from_Precambrian_chert_2.jpg)
Size of this preview: 506 × 600 pixels. Other resolutions: 202 × 240 pixels | 405 × 480 pixels | 648 × 768 pixels | 864 × 1,024 pixels | 1,730 × 2,050 pixels.
Original file (1,730 × 2,050 pixels, file size: 1.44 MB, MIME type: image/jpeg)
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 01:36, 11 January 2024 | ![]() | 1,730 × 2,050 (1.44 MB) | EncycloPetey | == {{int:filedesc}} == {{Artwork |Description={{en|1=Representative microfossils, preserved in chert from the Gunflint iron-formation of the north shore of Lake Superior. This formation is of middle Precambrian age and has been dated by K40 -Ar40 as approximately 2 × 106 years. All figures are from thin sections of the chart photographed in transmitted light. Published here for the first time (from Dr. E. S. Barghoorn); NASA Special Publications 56; Fig 1 (right half), page 3.}} |Source={{ext... |
File usage
The following 2 pages use this file: