File:Avon-les-Roches (Indre-et-Loire) (14402523178).jpg
Original file (4,928 × 3,264 pixels, file size: 11.63 MB, MIME type: image/jpeg)
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Summary
[edit]DescriptionAvon-les-Roches (Indre-et-Loire) (14402523178).jpg |
Ancienne carrière de tuffeau. Le tuffeau blanc, encore appelé tuffeau de Touraine, de Saumur ou de Bourré, a été abondamment employé, pour les constructions tourangelles et angevines. Dès l'époque gallo-romaine, des carrières de tuffeau on été exploitées en Anjou et en Touraine pour l'édification de bâtiments. L'extraction du tuffeau en galeries souterraines a été la technique d'extraction la plus fréquemment utilisée. Le carrier attaquait le front de taille à l'aide d'un pic. Les dalles qu'il abattait avoisinaient les 3 mètres de haut par 2,5 mètres de large sur 0,4 mètres de profondeur. Ces blocs étaient ensuite débités manuellement sur place en pierres de dimensions diverses. Le tuffeau "prétaillé" était ensuite sorti des galeries.
White limestone, still called tufa Touraine, Saumur or Bourre, has been extensively employed for the Touraine and Anjou constructions. Since Gallo-Roman times, limestone quarries have been exploited in Anjou and Touraine for the erection of buildings. The extraction of limestone underground galleries was the extraction technique used most frequently. The quarryman attacked the coalface using a peak. Slabs that felled were around 3 meters high by 2.5 meters wide and 0.4 meters deep. These blocks were then sawn by hand at stones of various sizes. Blocks of stone, roughly carved, was then removed from the gallery. |
Date | Taken on 3 July 2014, 10:53 |
Source | Avon-les-Roches (Indre-et-Loire) |
Author | Daniel Jolivet |
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This image was originally posted to Flickr by sybarite48 at https://flickr.com/photos/26082117@N07/14402523178. It was reviewed on 16 November 2017 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
16 November 2017
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current | 10:38, 16 November 2017 | 4,928 × 3,264 (11.63 MB) | Thesupermat2 (talk | contribs) | Transferred from Flickr via Flickr2Commons |
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Metadata
This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
Camera manufacturer | PENTAX |
---|---|
Camera model | PENTAX K-5 II |
Author | JOLIVET Daniel |
Copyright holder |
|
Exposure time | 1/125 sec (0.008) |
F-number | f/7.1 |
ISO speed rating | 200 |
Date and time of data generation | 10:53, 3 July 2014 |
Lens focal length | 15 mm |
Image title |
|
Orientation | Normal |
Horizontal resolution | 300 dpi |
Vertical resolution | 300 dpi |
Software used | Elements Organizer 9.0 |
File change date and time | 20:02, 6 July 2014 |
Y and C positioning | Co-sited |
Exposure Program | Shutter priority |
Exif version | 2.3 |
Date and time of digitizing | 10:53, 3 July 2014 |
Meaning of each component |
|
APEX exposure bias | 0 |
Metering mode | Pattern |
Flash | Flash did not fire, compulsory flash suppression |
Supported Flashpix version | 1 |
Color space | sRGB |
Sensing method | One-chip color area sensor |
File source | Digital still camera |
Scene type | A directly photographed image |
Custom image processing | Custom process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Focal length in 35 mm film | 22 mm |
Scene capture type | Standard |
Contrast | Hard |
Saturation | Normal |
Sharpness | Hard |
Subject distance range | Distant view |
GPS tag version | 2.3.0.0 |
Supported Flashpix version | 1 |
Image width | 4,928 px |
Image height | 3,264 px |
Date metadata was last modified | 22:02, 6 July 2014 |
Unique ID of original document | xmp.did:F77F1174072068118A6D941E84F3E088 |