Soapstone sinker S12386

S12386

ID2

LocationNorway

Approximate number of models30

Approximate size282 GB

Soapstone artifacts originate from Late Mesolithic or Early Neolithic sites in Western Norway (there are also several stray finds). Only those in the Late Mesolithic layers can be securely attributed stratigraphically. Chronologically they are attributed to 6400-3300 BCE and represent a material culture of the fishing oriented Stone Age societies of the region.

Dataset includes 30 sinkers for line fishing. They are various in size and shape. All are engraved with one or several lines that are the subject of further technological study. Usually, such sinkers are featured with furrow — a wider engraving supposedly used to tighten the line. There are also finer ones, often read as ornamentation. The origin of soapstone is suspected to be local, but is generally unclear.

Metadata

Description

A large black-green sinker with an ellipsoid shape. It has a flattened bottom part and a deep and wide lengthwise furrow. The top part is covered with shallow incisions that form two images of fish, supposedly halibut. The bottom part is featured with geometric ornamentation, including double zigzag. Stray find.

Date of discovery

N/A

Material source

Soapstone

From / Current location

N/A / Arkeologisk Museum, Universitetet I Stavanger

Museum №

12386

Museum № extention

N/A

Colour

black-green

Chronological attribution

Mesolithic / Neolithic

Site name

Njærheim

Location name

N/A

Metric parameters

12.8x9.6x6.5 cm

Weight

1,096.00 g

Volume

0.000373 m³

Density

2938.3378 kg/m³

Paradata

Data acquisition technique

Image-based 3D modeling

Data acquisition date

18.09.2024

Data acquisition equipment

Canon EOS D5s R, Zeiss Milvus, f/1.4, 50mm, polarizing filter

Focal length

Aperture

1/16

ISO

200

Exposure

4 s

Image processing software

Capture One 1.6.3

3D model creation software

Reality Capture 1.5.1

Capturing strategy

282 digital images in RAW format. 7 rounds of imaging with different object orientations: 2 bottom-ups, up-bottom, front side, back side, left side, right side. Sharp edges were acquired with additional precision. SfM photogrammetry, static camera within scenes, an artifact on the turntable, black background; scaled from calibrated metric scale bars. Remote shutter release.

Format of supplementary files

*.mtl
*.jpg
*.rcinfo

File format / 3D model

*.obj

Number of facets

47,651,088

Length of triangle side

0.04 mm

Referencing accuracy

Measuring accuracy

0.32 mm

Calculated accuracy (RMSE)