DOI: 10.5281/zenodo.18673254
title: East Asian Prehistoric Human-Face Jade Form 07 (EANJ_FACE_07):
High-Resolution Digital Documentation of Morphology, Perforations, Surface Evolution, and Tool Traces

description: 1. Core Statement

1.1 This record contains high-resolution original visual data of a jade object with a human-face form (Form ID: EANJ_FACE_07).

1.2 As a foundational research component within the digital documentation program for this object, the dataset provides high-fidelity visual evidence intended to support morphological analysis, traceological studies, and materials science–related research.

1.3 The digital documentation of this object forms part of a continuously expanding dataset designed to serve as a citable baseline for future cross-object comparative research. No cross-sample comparative interpretation is undertaken at the present stage.

 

2. Access and Use Conditions

2.1 Access Restrictions 

For reasons of data security and adherence to academic standards, the high-resolution original files in this dataset are subject to restricted access.

2.2 Application RequirementsApplicants are required to submit a clearly defined research purpose and institutional affiliation via the Zenodo platform.

2.3 Use LimitationsThis dataset is intended exclusively for academic research, visual documentation, and comparative analysis. Any commercial use, non-academic dissemination, or reproduction beyond academic comparative purposes is strictly prohibited without the explicit authorization of the dataset publisher.

 

3. Dataset Composition

3.1 Overview DocumentationHigh-resolution photographs of the front and reverse views, documenting the overall proportions and geometric structure of the object.

3.2 Measurement ReferenceImages including a metric scale for quantitative reference.



Length: 4.0 cm

Width: 4.0 cm

Thickness: 0.7 cm

Weight: 17 g


3.3 Microscopic EvidenceHigh-magnification macro images documenting perforation morphology, micro-weathering features, and observable surface modification traces.

 

4. List of Object Images

This dataset includes eight high-resolution images, as listed below:



Front view: documentation of facial morphology and overall proportionsEANJ_FACE_07_FRONT

Reverse view: documentation of rear contour morphologyEANJ_FACE_07_REVERSE

Scaled view: image including metric scale for dimensional referenceEANJ_FACE_07_WITH_SCALE

Front perforation macro view A: documentation of perforation morphologyEANJ_FACE_07_MIC_FRONT_UNIF_A

Front perforation macro view B: documentation of perforation morphologyEANJ_FACE_07_MIC_FRONT_UNIF_B

Upper perforation macro view: documentation of tool traces within the upper perforationEANJ_FACE_07_MIC_FRONT_UNIF_UP

Reverse perforation macro view: documentation of perforation-related tool traces from the reverse sideEANJ_FACE_07_MIC_REVERSE_UNIF


 

5. Observed Morphological Features

5.1 The object presents a flattened volume with a rounded-square planform. All four corners are smoothly rounded. Vertical and horizontal proportions are closely balanced, with relatively uniform thickness distribution, exhibiting a high degree of axial symmetry.

5.2 Four fully perforated openings are observable, representing facial elements including the eyes and mouth. The eye perforations are positioned symmetrically on either side of the upper central axis and consist of two large circular through-holes. The margins display clear annular recessing or surface leveling, while the internal walls show pronounced spiral striation traces.

5.3 The lower perforation (interpretable as the mouth in facial composition) is centrally positioned in the lower portion of the object and consists of a large circular through-hole. The internal walls and margins exhibit pronounced stepped textures suggestive of wear or shaping-related surface modification.

5.4 An additional perforation is located at the upper central forehead area. This perforation is vertically oriented, fully penetrative, and notably smaller in diameter.

5.5 The facial surface is generally planar, with relief primarily articulated through incised lines and extremely shallow relief modeling.

5.6 The entire surface of the object is extensively covered with fine, irregular reddish-brown alteration spots and dense network-like cracking (crazing), with some cracks extending to the edges.

5.7 The reverse surface is evenly polished. Aside from the aforementioned natural cracking and the exits of the perforations, no additional artificial morphological elements are observable.

5.8 All descriptions above are strictly based on features directly observable in the images and do not involve any interpretation related to manufacturing technique, function, chronology, or cultural attribution.

 

6. Limitations, Observational Constraints, and Open Questions

6.1 Observational Constraints



The object’s three-dimensional tapering form and the transition of eye features from incised to shallow relief modeling present challenges for planar photographic documentation.

Extensive reddish-brown alteration spots and dense network cracking significantly interfere with the identification of early surface polishing or tool-related micro-traces.

The object’s high degree of symmetry and openwork perforation structure complicate the selection of standardized measurement reference points.


6.2 Open Questions



Whether the object’s dimensions and overall morphology fall at the margins of the currently documented sample distribution.

The stratigraphic and spatial relationship between linear shallow grooves, micro-traces, and later cracking phenomena.

Comparative analysis of abstract facial representation achieved through fully perforated openings.

The physical mechanisms and environmental conditions responsible for the formation of irregular erosion pits and network cracking.


 

7. Imaging and Processing

7.1 All images were captured in RAW format using a full-frame camera equipped with a 90 mm macro lens and subsequently converted to JPEG files (approximately 42 megapixels per image), with no localized retouching.

7.2 Photography was conducted under controlled lighting conditions with a neutral background to minimize environmental interference.

7.3 No physical treatment or surface intervention was applied to the object during imaging.

7.4 Post-processing, where applied, was limited to global exposure and white balance adjustments to accurately reflect the visual condition of the material.

 

8. Compliance and Due Diligence

8.1 The compilation and release of this dataset follow fundamental principles of academic data management.

8.2 Prior to digitization and publication, the dataset underwent internal review addressing publication risk, usage boundaries, and alignment with academic standards to ensure transparency, prudence, and procedural integrity.

8.3 This dataset is released exclusively as a non-interpretive visual record and does not constitute any form of academic conclusion, cultural attribution, chronological determination, or institutional position.