Soapstone sinker S13262.4

S13262.4

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 small grey sinker with a lengthwise furrow. Grinding facets are visible, though the surface is damaged. The site context is secure and attributes the piece to the Mesolithic.

Date of discovery

N/A

Material source

Soapstone

From / Current location

N/A / Arkeologisk Museum, Universitetet I StavangerUniversitetet Museum Bergen

Museum №

13262

Museum № extention

Colour

bright grey

Chronological attribution

Mesolithic

Site name

Sømme

Location name

Sømme 3 lok.8

Metric parameters

3x2.5x1.8 cm

Weight

17.58 g

Volume

6355.7 m³

Density

2766.021052 kg/m³

Paradata

Data acquisition technique

Image-based 3D modeling

Data acquisition date

09.10.2024

Data acquisition equipment

Canon EOS D5s R, Zeiss Milvus, f/1.4, 50mm, extension ring 12mm, polarizing filter

Focal length

Aperture

1/16

ISO

200

Exposure

1 s

Image processing software

Adobe Photoshop

3D model creation software

Agisoft Metashape v.1.8.1

Capturing strategy

191 digital images in RAW format. 6 rounds of imaging with different object orientations: bottom-up, 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

File format / 3D model

*.obj

Number of facets

1,878,580

Length of triangle side

0.051 mm

Referencing accuracy

0.009 mm

Measuring accuracy

0.011 mm