File:K-T-boundary.JPG

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Summary

Description	English: The intermediate claystone layer contains 1000 times more iridium than the upper and lower layers. It is the boundary between Cretaceous and Tertiary Periods. Picture taken by the author at San Diego Natural History Museum. The rock is from Wyoming, USA.
Date	August 2009
Source	Own work
Author	Zimbres - Attribute it to Eurico Zimbres
Permission ( Reusing this file)	Free for all use

Licensing

I, the copyright holder of this work, hereby publish it under the following license:

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CC-BY-SA-3.0 truetrue

Annotations	This image is annotated: View the annotations at Commons

File usage

The following pages on Schools Wikipedia link to this image (list may be incomplete):

Metadata

This file contains additional information, probably added from the digital camera or scanner used to create or digitize it. If the file has been modified from its original state, some details may not fully reflect the modified file.

Camera manufacturer	SONY
Camera model	DSC-W5
Exposure time	1/8 sec (0.125)
F-number	f/2.8
ISO speed rating	250
Date and time of data generation	20:22, 8 February 2005
Lens focal length	7.9 mm
Width	2,274 px
Height	1,913 px
Orientation	Normal
Horizontal resolution	72 dpi
Vertical resolution	72 dpi
Software used	digiKam-0.10.0
File change date and time	20:22, 8 February 2005
Y and C positioning	Co-sited
Exposure Program	Normal program
Exif version	2.2
Date and time of digitizing	20:22, 8 February 2005
Image compression mode	8
Exposure bias	0
Maximum land aperture	3 APEX (f/2.83)
Metering mode	Pattern
Light source	Unknown
Flash	Flash did not fire, compulsory flash suppression
Colour space	sRGB
Custom image processing	Normal process
Exposure mode	Auto exposure
White balance	Auto white balance
Scene capture type	Standard
Contrast	Normal
Saturation	Normal
Sharpness	Normal

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