File:Blade (profile) (FindID 435354).jpg
Original file (1,280 × 960 pixels, file size: 459 KB, MIME type: image/jpeg)
Captions
Summary
[edit]blade (profile) | |||
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Photographer |
Royal Institution of Cornwall, Anna Tyacke, 2011-03-24 22:58:39 |
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Title |
blade (profile) |
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Description |
English: Chert struck flake, sub-rectangular and lozenge-shaped in profile and section, with a an abraded area of cortex running from the proximal end towards the distal end, and from the medial ridge to the right margin on the dorsal face. The left margin has been worked into a blade and the distal end has been a dull point, with a curved, recessed edge on the right margin, that could have been used as a graver. The ventral face is battered, but unworked, and the bulb of percussion survives at the proximal end.
The flake is an orange-brown colour and has been derived from Upper Greensand chert, probably from Devon (Dr Roger Taylor pers comm). Bond (2004) illustrates as similar example of a broad chert flake with an awl-like point, perhaps derived from the Cretaceous Greensand chert beds in North-east Devon, on page 24, Fig.2.26, and a knife with one blunted edge on page 135, Fig.5.121, No.F54, and two blade flakes on page 137, Fig.5.124, Nos, F24-25, which are all dated to the earlier Neolithic. |
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Depicted place | (County of findspot) Cornwall | ||
Date | between 4500 BC and 2500 BC | ||
Accession number |
FindID: 435354 Old ref: CORN-BCC016 Filename: Polcoverackfinds 028.jpg |
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Credit line |
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Source |
https://finds.org.uk/database/ajax/download/id/321960 Catalog: https://finds.org.uk/database/images/image/id/321960/recordtype/artefacts archive copy at the Wayback Machine Artefact: https://finds.org.uk/database/artefacts/record/id/435354 |
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Permission (Reusing this file) |
Attribution-ShareAlike License version 4.0 (verified 29 November 2020) | ||
Other versions |
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Licensing
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File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 06:33, 23 January 2017 | 1,280 × 960 (459 KB) | Fæ (talk | contribs) | Portable Antiquities Scheme, CORN, FindID: 435354, neolithic, page 247, batch count 4391 |
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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 | NIKON |
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Camera model | E4500 |
Exposure time | 5/69 sec (0.072463768115942) |
F-number | f/3.4 |
ISO speed rating | 100 |
Date and time of data generation | 12:20, 23 June 2009 |
Lens focal length | 15.8 mm |
Horizontal resolution | 300 dpi |
Vertical resolution | 300 dpi |
Software used | E4500v1.2 |
File change date and time | 12:20, 23 June 2009 |
Y and C positioning | Co-sited |
Exposure Program | Normal program |
Exif version | 2.2 |
Date and time of digitizing | 12:20, 23 June 2009 |
Meaning of each component |
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Image compression mode | 4 |
APEX exposure bias | 0 |
Maximum land aperture | 2.8 APEX (f/2.64) |
Metering mode | Center weighted average |
Light source | Tungsten (incandescent light) |
Flash | Flash did not fire, compulsory flash suppression |
Supported Flashpix version | 1 |
Color space | sRGB |
File source | Digital still camera |
Scene type | A directly photographed image |