File:Whetstone (profile) (FindID 434169).jpg
Original file (1,280 × 960 pixels, file size: 478 KB, MIME type: image/jpeg)
Captions
Summary
[edit]whetstone (profile) | |||
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Photographer |
Royal Institution of Cornwall, Anna Tyacke, 2011-03-20 18:38:46 |
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Title |
whetstone (profile) |
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Description |
English: Incomplete whetstone worked from a bladed beach pebble of silty sandstone that has a trimmed and faceted end (Dr Roger Taylor pers comm) and flat vertical sides. The whetstone is rectangular in plan, with straight sides and one broken end. There are percussion marks at the faceted end and a large flake missing from the opposite end. Both sides and one face are flat and worn where they were used for sharpening and polishing metal. There are Devonian (Portscatho Formation) sandstones, potentially suitable for whetstones, on the coast between Loe Pool and Polurrian Cove in the northwest of the Lizard Peninsula. These extend along the Helford River to Mawnan and Rosemullion to the north of the findspot (Roger Taylor pers comm).
Christie (CAJ 27, 1988) illustrates similar worked pebble tools on pages 46 & 128, Figs.14 & 77, Nos.L19 & L74, excavated from a Bronze Age barrow cemetery on Davidstow Moor, Cornwall, which date from the Early to the Middle Bronze Age, c.2100-1500 BC. Jones & Taylor (2010) illustrate similar whetstones on page 129, Fig.66, Nos.505 & 703, excavated from Late Bronze Age contexts at Scarcewater, Cornwall, radio-carbon dated to c.1000-830 BC. |
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Depicted place | (County of findspot) Cornwall | ||
Date | between 2150 BC and 800 BC | ||
Accession number |
FindID: 434169 Old ref: CORN-138FA4 Filename: Polcoverackfinds 029.jpg |
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Credit line |
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Source |
https://finds.org.uk/database/ajax/download/id/321299 Catalog: https://finds.org.uk/database/images/image/id/321299/recordtype/artefacts Artefact: https://finds.org.uk/database/artefacts/record/id/434169 |
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Permission (Reusing this file) |
Attribution-ShareAlike License version 4.0 (verified 21 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 | 06:27, 23 January 2017 | 1,280 × 960 (478 KB) | Fæ (talk | contribs) | Portable Antiquities Scheme, CORN, FindID: 434169, bronze age, page 246, batch count 4374 |
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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 | 10/143 sec (0.06993006993007) |
F-number | f/2.9 |
ISO speed rating | 100 |
Date and time of data generation | 12:10, 23 June 2009 |
Lens focal length | 11.1 mm |
Horizontal resolution | 300 dpi |
Vertical resolution | 300 dpi |
Software used | E4500v1.2 |
File change date and time | 12:10, 23 June 2009 |
Y and C positioning | Co-sited |
Exposure Program | Normal program |
Exif version | 2.2 |
Date and time of digitizing | 12:10, 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 |