Soapstone sinker B17882.5.15922

B17882.5.15922

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

An irregular elongated soapstone piece with a damaged surface. Has a vague and shallow lengthwise furrow and several parallel horizontal engravings perpendicular to it. The furrow is clearly made to avoid more irregular parts of the surface. The archaeological context of the artifact is unknown.

Date of discovery

N/A

Material source

Soapstone

From / Current location

N/A / Universitetet Museum Bergen

Museum №

17882

Museum № extention

5.15922

Colour

bright grey

Chronological attribution

Mesolithic / Neolithic

Site name

Bildøy

Location name

Lokalitet 13

Metric parameters

4.1x1.9x1.4 cm

Weight

15.6 g

Volume

6187.3 m³

Density

2521.293618 kg/m³

Paradata

Data acquisition technique

Image-based 3D modeling

Data acquisition date

25.09.2024

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

1/2 s

Image processing software

Adobe Photoshop

3D model creation software

Agisoft Metashape v.1.8.1

Capturing strategy

201 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

4,125,524

Length of triangle side

0.057 mm

Referencing accuracy

0.022 mm

Measuring accuracy

0.029 mm