File:Konradfels Vulkanschlot Schwaebischer-Vulkan Schwaebische-Alb.jpg
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DescriptionKonradfels Vulkanschlot Schwaebischer-Vulkan Schwaebische-Alb.jpg |
Deutsch: Der Konradfels ragt aus dem fluvial erodierten Steilhang des Plateaus der Schwäbischen Alb zur Lenninger Lauter zwischen Grabenstetten und Oberlenningen. Es ist eine Felsnadel, ein Rest eines Vulkanschlotes des miozänen „Schwäbischen Vulkans“ mit helleren Einsprengseln. Das harte, weil kompaktierte und verbackene, Gestein widerstand der Erosion länger als der ohnehin harte Weißjura. Die schnell abgekühlten, geringviskosen Schmelzen (Basalttuffe) – überwiegend in der Größe von Lapilli - enthalten Mineralien aus großen Vulkantiefen, aber auch mitgerissene Brekzien der Erdmantelschichten und aus helleren, oberflächennahen Sedimenten bestehende Xenolithe der anstehenden Juraschichten. Einige Mineralien haben ausgeprägte magnetische Eigenschaften, die zu Anomalien gegenüber dem allseits vorhandenen Erdmagnetismus führen. In den Gipfelbereichen des Konradfels und des Calver Bühl (bei Dettingen an der Erms) wurden besonders starke Magnetisierungen vorgefunden, die als Blitzmagnetisierung interpretiert werden. Hier werden Magnetkompasse stark abgelenkt. Nur in sehr wenigen Fällen sind Vulkanite von Schloten heute noch an Oberflächen sichtbar. Nur mit hochsensiblen geophysikalischen Messmethoden, die magnetische Anomalien ermittelten, konnten die Schlotfunde bis heute auf 356 (Stand: 2016) mehr als verdoppelt werden. English: Top of Konradfels, Middle Swabian Alb. volcanic rock, lithified rest of a volcanic pipe of a phreatomagmatic volcano of the “Urach-Kirchheimer Vulkangebiet” (Swabian Volcanoes). The not dark gray fragments within the mass of tuff are Xenolithes (non volcanic material), mostly White Jurassic of the Swabian Alb. The pipe’s volcanic rock contains magnetized minerals, which produce magnetic anomalies in relation to the earth’s magnetic field. Here and next to the top of Calver Bühl (at Dettingen an der Erms) compass data are therefore extremely false. Only in very few cases volcanic rock is visible on the bare surface. Only due to sensitive geophysical methods, which traced anomalies, was it possible to double the findings of volcanic pipes to contemporary 356 (2016). |
Date | |
Source | Own work |
Author | Reiner Enkelmann |
Permission (Reusing this file) |
explicit permission for the uploader by Email, 14th December 2015 |
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Camera manufacturer | NIKON CORPORATION |
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Camera model | NIKON D200 |
Author | Reiner Enkelmann |
Exposure time | 1/125 sec (0.008) |
F-number | f/11 |
ISO speed rating | 200 |
Date and time of data generation | 09:26, 25 April 2011 |
Lens focal length | 16 mm |
Online copyright statement | https://commons.wikimedia.org/wiki/File:Konradfels_Vulkanschlot_Schwaebischer-Vulkan_Schwaebische-Alb.jpg |
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City shown | Filderstadt |
Width | 1,800 px |
Height | 1,200 px |
Compression scheme | LZW |
Pixel composition | RGB |
Orientation | Normal |
Number of components | 8 |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Data arrangement | chunky format |
Software used | Adobe Photoshop CS5 Windows |
File change date and time | 00:57, 18 December 2015 |
Exposure Program | Normal program |
Exif version | 2.21 |
Date and time of digitizing | 09:26, 25 April 2011 |
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APEX shutter speed | 6.965784 |
APEX aperture | 6.918863 |
APEX exposure bias | 0 |
Maximum land aperture | 4 APEX (f/4) |
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Light source | Unknown |
Flash | Flash did not fire |
DateTime subseconds | 16 |
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DateTimeDigitized subseconds | 16 |
Supported Flashpix version | 1 |
Color space | Uncalibrated |
Sensing method | One-chip color area sensor |
File source | Digital still camera |
Scene type | A directly photographed image |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Digital zoom ratio | 1 |
Focal length in 35 mm film | 24 mm |
Scene capture type | Standard |
Scene control | None |
Contrast | Normal |
Saturation | Normal |
Sharpness | Normal |
Subject distance range | Unknown |
Lens used | 12.0-24.0 mm f/4.0 |
Date metadata was last modified | 01:57, 18 December 2015 |
Unique ID of original document | E4E44A0BC725BCE8719D279C5E13AE4B |
Copyright status | Copyright status not set |
IIM version | 19,433 |