File:Bronze Age chert debitage (FindID 841902).jpg
Original file (3,218 × 2,824 pixels, file size: 3.3 MB, MIME type: image/jpeg)
Captions
Summary
[edit]Bronze Age chert debitage | |||
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Photographer |
Somerset County Council, Laura Burnett, 2017-09-16 11:30:48 |
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Title |
Bronze Age chert debitage |
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Description |
English: A collection of two pieces of Bronze Age chert debtage (c. 2350- 800BC) Both pieces are tertiary flakes, as there is no cortex remaining and both show signs of multi-platform working.
Flake A has been strongly repatinated by fire, to a creamy white colour , with a crackled appearance. The dorsal face retains evidence of three negative flake scars struck in apposing directions. While the ventral face, retains evidence of at least two if not possibly three striking platforms; due to the extent of re-patination it is impossible to indicate whether this flake has been hard or soft hammer struck. It is 53.86mm in length, with a maximum width of 28.09mm and a minimum width of 30.07mm. It is 11.60mm thick with a weight of 24.88g Flake B, has a broadly triangular cross section, flat ventral face, and is in the form of a blade. The dorsal surface, has five negative flake scars,struck at varying angles, suggestive of the multi-platform working more common in the Bronze Age. The ventral surface has a single, high bulb of percussion with closely spaced conchoidal ripple marks indicative of the use of a hard (Stone) hammer. The chert is black in colour, with white and buff speckled inclusions. It is 41.38mm in length, with a maximum width of 20.70mm, and a minimum width of 17.75mm. It is 14.23mm thick with a weight of 12.46g |
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Depicted place | (County of findspot) Somerset | ||
Date | between 2350 BC and 800 BC | ||
Accession number |
FindID: 841902 Old ref: SOM-B795E9 Filename: SOMB795E9.JPG |
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Credit line |
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Source |
https://finds.org.uk/database/ajax/download/id/630019 Catalog: https://finds.org.uk/database/images/image/id/630019/recordtype/artefacts archive copy at the Wayback Machine Artefact: https://finds.org.uk/database/artefacts/record/id/841902 |
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Permission (Reusing this file) |
Attribution License version 2.0 (verified 28 November 2020) |
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File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 22:57, 11 December 2018 | 3,218 × 2,824 (3.3 MB) | Fæ (talk | contribs) | Portable Antiquities Scheme, SOM, FindID: 841902, bronze age, page 967, batch count 271 |
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Metadata
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Camera manufacturer | Canon |
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Camera model | Canon EOS 1200D |
Exposure time | 2/1 sec (2) |
F-number | f/32 |
ISO speed rating | 100 |
Date and time of data generation | 12:34, 27 July 2017 |
Lens focal length | 60 mm |
Orientation | Normal |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Software used | Adobe Photoshop CS4 Windows |
File change date and time | 16:20, 27 July 2017 |
Y and C positioning | Co-sited |
Exposure Program | Manual |
Exif version | 2.3 |
Date and time of digitizing | 12:34, 27 July 2017 |
Meaning of each component |
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APEX shutter speed | −1 |
APEX aperture | 10 |
APEX exposure bias | 0 |
Metering mode | Pattern |
Flash | Flash did not fire, compulsory flash suppression |
DateTime subseconds | 68 |
DateTimeOriginal subseconds | 68 |
DateTimeDigitized subseconds | 68 |
Supported Flashpix version | 1 |
Color space | sRGB |
Focal plane X resolution | 5,728.1767955801 |
Focal plane Y resolution | 5,808.4033613445 |
Focal plane resolution unit | inches |
Custom image processing | Normal process |
Exposure mode | Manual exposure |
White balance | Manual white balance |
Scene capture type | Standard |
GPS tag version | 0.0.3.2 |
Supported Flashpix version | 1 |
Image width | 3,218 px |
Image height | 2,824 px |
Rating (out of 5) | 0 |
Date metadata was last modified | 17:20, 27 July 2017 |
Unique ID of original document | xmp.did:8C2B7CC0DE72E711B0A6A7860C6C7C85 |