File:Chopper (section) (FindID 540852).jpg
Original file (1,280 × 960 pixels, file size: 528 KB, MIME type: image/jpeg)
Captions
Summary
[edit]chopper (section) | |||
---|---|---|---|
Photographer |
Royal Institution of Cornwall, Anna Tyacke, 2013-04-16 12:32:10 |
||
Title |
chopper (section) |
||
Description |
English: Incomplete flint chopper, semi-circlular in plan and lozenge-shaped in profile and section. The dorsal and ventral faces are both retouched along the existing margin, at the chopping edge, but the edge is also damaged and fractured so that it has a stepped appearance. The edges of the flake scars are generally smooth and the surface appears to have been water-worn. A patch of cortex remains near the broken edge on the ventral face.
The flint is a mottled grey-buff colour with orange patches on the surface where the flint has been stained from proximity to iron, but the colour and texture of the flint suggest that it is not local to Cornwall. There is another example of a patinated, rolled and iron-stained chert flake from a larger Levallois flake or hand-axe (CORN-3B7A82) found in a neighbouring field, which dates from the Lower Palaeolithic to the Mesolithic period. Andrefsky (1998) illustrates several bifacial cores that are similar in plan and profile and could then have been used as tools, on page 147, Fig.7.8, letters a & b, but as potentially more than half of this tool is missing, it is difficult to draw conclusions. Bond (2004) illustrates similar biface hand-axes on pages 77 & 79, Figs.5.62 & 5.64, Nos.3 & 6, which are dated from the Lower Palaeolithic, and a pick on page 95, Fig.5.81, No.2, which dates from the Mesolithic period. But the size and shape, the break and the flaking technology used need not indicate a Lower Palaeolithic or Mesolithic date, but could easily fit within a later prehistoric assemblage. The flaking is not precise or detailed and the piece is snapped. The raw material appears to be a heavily patinated or corticated, rolled (red, iron stains of arrises) pebble (I think some cortex was indicated as chalk abraded) source. The 'flesh' of the flint, just showing through the patina in areas, appears to be a green-grey type indicative of flint from the southern central Downlands, but this material can also be re-deposited. The size, flaking technology (expedient), would suggest to me to be a broken knife, but of a later prehistoric date, perhaps Bronze Age, which may be associated with other flint and pottery from this period. Another comparable Later Neolithic to Early Bronze Age assemblage was found during the excavation of the Honiton Bypass by Wessex Archaeology, with some material of this date and the use of Greensand Chert (Clive Bond pers comm). |
||
Depicted place | (County of findspot) Cornwall | ||
Date | between 10000 BC and 2100 BC | ||
Accession number |
FindID: 540852 Old ref: CORN-00B3F7 Filename: Jan13finds53.JPG |
||
Credit line |
|
||
Source |
https://finds.org.uk/database/ajax/download/id/423536 Catalog: https://finds.org.uk/database/images/image/id/423536/recordtype/artefacts archive copy at the Wayback Machine Artefact: https://finds.org.uk/database/artefacts/record/id/540852 |
||
Permission (Reusing this file) |
Attribution-ShareAlike License version 4.0 (verified 27 November 2020) | ||
Other versions |
|
Licensing
[edit]- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
- share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 21:12, 24 January 2017 | 1,280 × 960 (528 KB) | Fæ (talk | contribs) | Portable Antiquities Scheme, CORN, FindID: 540852, mesolithic, page 568, batch count 2868 |
You cannot overwrite this file.
File usage on Commons
The following 9 pages use this file:
- File:Chopper (detail) (FindID 540852).jpg
- File:Chopper (dorsal) (FindID 540852).jpg
- File:Chopper (dorsal detail) (FindID 540852).jpg
- File:Chopper (drawing) (FindID 540852).jpg
- File:Chopper (edge) (FindID 540852).jpg
- File:Chopper (profile) (FindID 540852).jpg
- File:Chopper (retouch) (FindID 540852).jpg
- File:Chopper (section) (FindID 540852).jpg
- File:Chopper (ventral) (FindID 540852).jpg
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 |
---|---|
Camera model | E4500 |
Exposure time | 5/914 sec (0.0054704595185996) |
F-number | f/6.3 |
ISO speed rating | 100 |
Date and time of data generation | 15:10, 24 January 2013 |
Lens focal length | 16.2 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 | 14:48, 24 January 2013 |
Y and C positioning | Co-sited |
Exposure Program | Normal program |
Exif version | 2.2 |
Date and time of digitizing | 15:10, 24 January 2013 |
Meaning of each component |
|
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 | 78 mm |
Scene capture type | Standard |
Scene control | None |
Contrast | Normal |
Saturation | Normal |
Sharpness | Normal |
Subject distance range | Unknown |