Soapstone sinker S10358z

S10358z

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 orange-grey sinker with a lengthwise furrow and several shallow traces on other parts. Clear facets result from surface grinding. The archaeological context and chronological attribution are secure.

Date of discovery

N/A

Material source

Soapstone

From / Current location

N/A / Arkeologisk Museum, Universitetet I Stavanger

Museum №

10358

Museum № extention

Colour

orange-grey

Chronological attribution

Mesolithic

Site name

Hommersåk

Location name

N/A

Metric parameters

3x2.2x1 cm

Weight

9.75 g

Volume

3609.5 m³

Density

2701.205153 kg/m³

Paradata

Data acquisition technique

Image-based 3D modeling

Data acquisition date

27.11.2024

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

324 digital images in RAW format. 7 rounds of imaging with different object orientations: bottom-up, up-bottom, close-up on bottom-up, close-up on the up-bottom, close-up on the left-right, front side, back side. 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

2,765,594

Length of triangle side

0.072 mm

Referencing accuracy

0.002 mm

Measuring accuracy

0.012 mm