Soapstone sinker B14574.9.17644

B14574.9.17644

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 larger orange-grey soapstone sinker with a lengthwise furrow. Half of the back side is damaged, the other one is covered with geometric ornamentation. The front side is also covered with geometric ornamentation. 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 №

14574

Museum № extention

9.17644

Colour

orange-grey

Chronological attribution

Mesolithic / Neolithic

Site name

Bjorøy Nordre

Location name

Nilsvikdalen lok.7

Metric parameters

5.8x5.1x2.5 cm

Weight

102.81 g

Volume

37248.2 m³

Density

2760.133376 kg/m³

Paradata

Data acquisition technique

Image-based 3D modeling

Data acquisition date

26.09.2024

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

1/4 s

Image processing software

Adobe Photoshop

3D model creation software

Agisoft Metashape v.1.8.1

Capturing strategy

197 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

3,678,908

Length of triangle side

0.103 mm

Referencing accuracy

0.021 mm

Measuring accuracy

0.021 mm