DOI: 10.5281/zenodo.18693884
title: East Asian Prehistoric Human-Face Jade Form 11 (EANJ_FACE_11):
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 in the form of a human face (Form ID: EANJ_FACE_11).

1.2 As a foundational research component of the digital archiving project for this specimen, the dataset provides high-fidelity visual evidence 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 intended to provide citable baseline material for future cross-object comparative studies. At the present stage, no comparative or cross-sample interpretations are undertaken.

 

2. Access and Use Conditions

2.1 Access RestrictionsFor reasons of data security and academic compliance, the high-resolution original files of this dataset are subject to restricted access.

2.2 Application RequirementsApplicants must submit a clear statement of research purpose and institutional affiliation through the Zenodo platform.

2.3 Use LimitationsThis dataset is restricted to academic research, visual documentation, and comparative analysis. Any commercial use, non-academic dissemination, or reproduction beyond scholarly comparative purposes is strictly prohibited without explicit authorization from the dataset publisher.

 

3. Dataset Composition

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

3.2 Metric ReferenceImages including a metric scale for quantitative reference.



Length: 4.4 cm

Width: 2.5 cm

Thickness: 1.7 cm

Weight: 29 g


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

 

4. List of Object Images

The dataset includes the following high-resolution images:



Front view: Records facial configuration and overall proportionsEANJ_FACE_11_FRONT

Reverse view: Shows the rear contourEANJ_FACE_11_REVERSE

Scale view: Includes a metric scale for dimensional referenceEANJ_FACE_11_WITH_SCALE

Reverse macro view: Documents the morphology of the upper perforationsEANJ_FACE_11_MIC_ONP

Reverse macro view (left perforation):EANJ_FACE_11_MIC_ONP_L

Reverse macro view (right perforation):EANJ_FACE_11_MIC_ONP_R

Front macro view: Records frontal surface detailsEANJ_FACE_11_MIC

Side macro view: Documents the technological characteristics of the lateral “ear” structuresEANJ_FACE_11_MIC_WEAR


 

5. Observed Morphological Features

5.1 The object exhibits a vertically elongated, near-ovoid three-dimensional form with a tapered lower end. It has substantial thickness, indicating a transitional morphology between planar relief and full round sculpture.

5.2 Facial Features



Eyes: Almond-shaped, with outlines defined by incised lines of varying depth.

Nose: Triangular in form, emphasized through shallow incised lines.

Mouth: Represented by a single horizontal shallow incised line.


5.3 Lateral “Ear” FeaturesSymmetrically distributed raised structures resembling “ears” are present on both sides of the face. From a lateral perspective, the inner walls of the incised grooves display horizontally aligned, parallel linear traces.

5.4 Perforation FeaturesA pair of bovine-nostril–type perforations is visible on the upper central area of the reverse. The inner walls of the perforations are rough in texture and bear adherent reddish-brown deposits.

5.5 Surface ConditionThe base material appears white, with dense, fine network-like cracking (crazing) distributed across the entire surface. Irregular reddish-brown to dark brown staining is present both on the surface and within incised lines, with apparent penetration along crack pathways.

5.6 Reverse FeaturesThe reverse surface is relatively flat. Aside from the paired perforations described above, no additional decorative elements are observed. The degree of surface weathering appears broadly consistent with that of the front.

5.7 All descriptions above are strictly limited to morphological and structural features directly observable in the images and do not involve any interpretations regarding manufacturing technique, function, chronology, or cultural attribution.

 

6. Limitations, Observational Constraints, and Open Questions

6.1 Observational Constraints



Overlap of cracking and staining:The interweaving of dense network cracking and dark deposits makes it particularly difficult to distinguish between potential anthropogenic surface modification traces and natural stress-related fractures.


6.2 Open Questions



Formation logic of incised groove traces:Whether the horizontally parallel traces observed within incised grooves on the lateral “ear” structures and frontal features represent remnants of a specific manufacturing process or intentional secondary surface treatment.

Symmetry in three-dimensional modeling:Examination of the degree of symmetry between facial features and lateral “ear” structures in three-dimensional space, and its implications for original positioning and shaping methods.

Chemical composition of surface deposits:The origin of the reddish-brown materials within perforations and cracks, and their potential implications for understanding the object’s preservation environment.


 

7. Imaging and Processing

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

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

7.3 No physical handling or surface intervention was performed on the object during image acquisition.

7.4 Post-processing, if applied, was limited to global exposure and white balance adjustments to ensure accurate visual representation of the material condition.

 

8. Compliance and Due Diligence

8.1 The compilation and release of this dataset adhere to 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 norms, ensuring a transparent, cautious, and procedurally sound process.

8.3 This dataset is published solely as a non-interpretive record of original visual data and does not constitute any academic conclusions, cultural attributions, chronological determinations, or institutional positions.