File:Brown Bluff-2016-Tabarin Peninsula–Volcanic tephra.jpg

Summary

Description	English: Block of tephra, at Brown Bluff, Tabarin Peninsula, Antarctic Peninsula. To give an idea of scale, the height at the center of the object is at least 6 ft (1.8 m). Per Skilling, I. P. (1994). Evolution of an englacial volcano: Brown Bluff, Antarctica. (not publicly available on line, and I was only able to read the first two pages), it appears to be "alkali basaltic" in composition (at least the Brown Bluff tephra in general appears to be), I think this is referring to the darker solid chunks contained in the lighter matrix material.
Date	15 January 2016, 15:11:50
Source	Own work
Author	Godot13
Attribution (required by the license) InfoField	Andrew Shiva / Wikipedia / CC BY-SA 4.0
InfoField	Andrew Shiva / Wikipedia

Object location	63° 31′ 08.22″ S, 56° 53′ 49.02″ W	View this and other nearby images on: OpenStreetMap	-63.518950; -56.896950


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Licensing

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	21:57, 3 April 2016		3,848 × 3,125 (12.99 MB)	Godot13	CA & crop
	03:56, 4 February 2016		5,688 × 3,792 (19.65 MB)	Godot13	User created page with UploadWizard

Camera manufacturer	Canon
Camera model	Canon EOS 5DS
Exposure time	1/50 sec (0.02)
F-number	f/6.3
ISO speed rating	200
Date and time of data generation	15:11, 15 January 2016
Lens focal length	70 mm
Orientation	Normal
Horizontal resolution	300 dpi
Vertical resolution	300 dpi
Software used	Adobe Photoshop CS6 (Windows)
File change date and time	17:56, 3 April 2016
Exposure Program	Aperture priority
Exif version	2.3
Date and time of digitizing	15:11, 15 January 2016
Shutter speed	5.643856
APEX aperture	5.310704
Exposure bias	0
Maximum land aperture	4 APEX (f/4)
Metering mode	Pattern
Flash	Flash did not fire, compulsory flash suppression
DateTimeOriginal subseconds	00
Color space	Uncalibrated
Focal plane X resolution	2,413.3333435059
Focal plane Y resolution	2,413.3333435059
Focal plane resolution unit	3
Custom image processing	Normal process
Exposure mode	Auto exposure
White balance	Manual white balance
Scene capture type	Standard
Serial number of camera	032021001345
Lens used	EF70-300mm f/4-5.6L IS USM
Rating (out of 5)	0
Date metadata was last modified	13:56, 3 April 2016
Unique ID of original document	128733CD36577E292F64D7C90E10D0FD

File:Brown Bluff-2016-Tabarin Peninsula–Volcanic tephra.jpg

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15 January 2016

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Canon EOS 5Ds

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63°31'8.22"S, 56°53'49.02"W

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8a6eaa32a08859ef68fbdf3e9b6c298daef4b0a0

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3,848 pixel

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