File:3 stages of geological development at Croft Quarry. - geograph.org.uk - 1136369.jpg
3_stages_of_geological_development_at_Croft_Quarry._-_geograph.org.uk_-_1136369.jpg (640 × 458 pixels, file size: 215 KB, MIME type: image/jpeg)
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Description3 stages of geological development at Croft Quarry. - geograph.org.uk - 1136369.jpg |
English: 3 stages of geological development at Croft Quarry.. The rock being quarried is granite, so the lowest levels are relatively early igneous formations. The slightly redder patch just to the right of the strong near-vertical shadow just right of centre shows tightly curved strata (not clearly visible at this scale) indicative of a rising stream of magma.
The second stage is the clear evidence of glacial erosion of the granite shown by the smoothly curved boundary between the granite and the overlying sedimentary formations. A noticeable feature of the latter is the way they have been deposited preferentially into the hollows of the underlying granite so that the successive layers show less and less curvature, ending with an essentially horizontal top layer. The sedimentary deposits are mainly red mudstone with some thin intermediate layers of lighter coloured deposits. A more detailed view of part of this formation can be seen in 1136362. |
Date | |
Source | From geograph.org.uk |
Author | Alan Murray-Rust |
Attribution (required by the license) InfoField | Alan Murray-Rust / 3 stages of geological development at Croft Quarry. / |
InfoField | Alan Murray-Rust / 3 stages of geological development at Croft Quarry. |
Camera location | 52° 33′ 57″ N, 1° 14′ 53″ W | View this and other nearby images on: OpenStreetMap | 52.565790; -1.248100 |
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Object location | 52° 33′ 59″ N, 1° 14′ 42″ W | View this and other nearby images on: OpenStreetMap | 52.566310; -1.245100 |
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Licensing edit
This image was taken from the Geograph project collection. See this photograph's page on the Geograph website for the photographer's contact details. The copyright on this image is owned by Alan Murray-Rust and is licensed for reuse under the Creative Commons Attribution-ShareAlike 2.0 license.
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current | 03:01, 25 February 2011 | 640 × 458 (215 KB) | GeographBot (talk | contribs) | == {{int:filedesc}} == {{Information |description={{en|1=3 stages of geological development at Croft Quarry. The rock being quarried is granite, so the lowest levels are relatively early igneous formations. The slightly redder patch just to the right of t |
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Camera manufacturer | Panasonic |
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Camera model | DMC-FZ7 |
Exposure time | 1/500 sec (0.002) |
F-number | f/3.6 |
ISO speed rating | 100 |
Date and time of data generation | 13:59, 23 January 2009 |
Orientation | Normal |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
File change date and time | 13:59, 23 January 2009 |
Y and C positioning | Centered |
Exif version | 2.2 |
Date and time of digitizing | 13:59, 23 January 2009 |
Meaning of each component |
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APEX shutter speed | 8.9657897949219 |
APEX aperture | 3.6959991455078 |
APEX exposure bias | 0 |
Flash | Flash did not fire, compulsory flash suppression |
Supported Flashpix version | 1 |
Color space | sRGB |
File source | Digital still camera |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Digital zoom ratio | 0 |
Scene capture type | Standard |