Soapstone sinker B17881.1.30922

B17881.1.30922

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 greyish and slaty piece of soapstone with a lengthwise furrow. The furrow is curved, wide and deep. The front side is slightly concave and covered with several wide horizontal notches. Furthermore, both front and back sides are covered with shallow and narrow incisions, arranged in cross-hatchets. Left and right sides are featured with side notches. The surface is slightly damaged, and the archaeological context is unknown.

Date of discovery

N/A

Material source

Soapstone

From / Current location

N/A / Universitetet Museum Bergen

Museum №

17881

Museum № extention

1.30922

Colour

bright grey

Chronological attribution

Mesolithic / Neolithic

Site name

Bildøy

Location name

Lokalitet 11

Metric parameters

2.4x1.3x1 cm

Weight

18.4 g

Volume

6064.6 m³

Density

3034.000594 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

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

3,951,516

Length of triangle side

0.059 mm

Referencing accuracy

0.028 mm

Measuring accuracy

0.039 mm