Soapstone sinker B14574.10.16813

B14574.10.16813

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 soapstone sinker with flat front and back sides. Lengthwise furrow is straight and shallow. The side notches are located on the left, write, top, and bottom sides of the sinker. The engravings are reddish. The archaeological context is unknown.

Date of discovery

N/A

Material source

Soapstone

From / Current location

N/A / Universitetet Museum Bergen

Museum №

14574

Museum № extention

10.16813

Colour

grey

Chronological attribution

Mesolithic / Neolithic

Site name

Bjorøy Nordre

Location name

Nilsvikdalen lok.7

Metric parameters

2x1.5x1.2 cm

Weight

1.87 g

Volume

668.417 m³

Density

2797.654757 kg/m³

Paradata

Data acquisition technique

Image-based 3D modeling

Data acquisition date

24.09.2024

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

1/3 s

Image processing software

Adobe Photoshop

3D model creation software

Agisoft Metashape v.1.8.1

Capturing strategy

283 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

2,196,766

Length of triangle side

0.032 mm

Referencing accuracy

0.003 mm

Measuring accuracy

0.021 mm