File:Microcore (profile) (FindID 839416).jpg
![File:Microcore (profile) (FindID 839416).jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/a/a2/Microcore_%28profile%29_%28FindID_839416%29.jpg/800px-Microcore_%28profile%29_%28FindID_839416%29.jpg?20181217041528)
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Captions
Captions
Summary
[edit]microcore (profile) | |||
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Photographer |
Royal Institution of Cornwall, Anna Tyacke, 2017-03-29 17:22:40 |
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Title |
microcore (profile) |
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Description |
English: A flint single-platform micro-core, oval in plan, plano-convex in profile and in section. The cortex has been removed from the proximal end by the removal of three large flakes to produce a triangular point. Subsequently six shallow flakes to make bladelets have been removed, probably by pressure flaking at the proximal margin of the largest of the three original flake scars. The distal half, or butt, of the pebble retains its cortex and could have been held comfortably in the hand when in use. The point of the artefact is damaged through use as a chopping or crushing tool. The surface of the fine-grained flint is a creamy-grey colour with slightly darker grey patches towards the edge of the cortex which suggests that it was probably derived from a local beach pebble.
Bond (2004) illustrates a similar microblade core on page 113, fig.5.97, no.L24, which is dated from the later Mesolithic period. Butler (2005) illustrates a similar single-platform bladelet core and a chopping tool on pages 85 & 115, figs.30 & 46, nos.5 & 8, which date from the Mesolithic period. |
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Depicted place | (County of findspot) Cornwall | ||
Date | between 7000 BC and 4500 BC | ||
Accession number |
FindID: 839416 Old ref: CORN-98659E Filename: DSCN4770.JPG |
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Credit line |
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Source |
https://finds.org.uk/database/ajax/download/id/608982 Catalog: https://finds.org.uk/database/images/image/id/608982/recordtype/artefacts archive copy at the Wayback Machine Artefact: https://finds.org.uk/database/artefacts/record/id/839416 |
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Permission (Reusing this file) |
Attribution License |
Object location | 50° 11′ 17.52″ N, 5° 24′ 18.72″ W ![]() | View this and other nearby images on: OpenStreetMap | ![]() |
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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 | 04:15, 17 December 2018 | ![]() | 1,600 × 1,200 (698 KB) | Fæ (talk | contribs) | Portable Antiquities Scheme, CORN, FindID: 839416, mesolithic, page 1979, batch count 13837 |
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Metadata
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Camera manufacturer | NIKON |
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Camera model | E4500 |
Exposure time | 1/330 sec (0.003030303030303) |
F-number | f/4.6 |
ISO speed rating | 100 |
Date and time of data generation | 16:25, 29 March 2017 |
Lens focal length | 17.3 mm |
Orientation | Normal |
Horizontal resolution | 300 dpi |
Vertical resolution | 300 dpi |
Software used | Microsoft Windows Photo Viewer 6.1.7600.16385 |
File change date and time | 16:58, 29 March 2017 |
Y and C positioning | Co-sited |
Exposure Program | Normal program |
Exif version | 2.2 |
Date and time of digitizing | 16:25, 29 March 2017 |
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 |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Manual white balance |
Digital zoom ratio | 0 |
Focal length in 35 mm film | 83 mm |
Scene capture type | Standard |
Scene control | None |
Contrast | Normal |
Saturation | Normal |
Sharpness | Normal |
Subject distance range | Unknown |