DOI: 10.5281/zenodo.18726459
title: East Asian Prehistoric Human-Face Jade Form 20 (EANJ_FACE_20):
High-Resolution Digital Documentation of Morphology, Perforations, Surface Evolution, and Tool Traces

description: 1. Core Statement

1.1 This record contains high-resolution raw visual data of a single human-face–form jade object (Form ID: EANJ_FACE_20).

1.2 This dataset serves as a foundational research layer within an ongoing digital archiving project, providing high-fidelity visual evidence to support morphological analysis, traceology, and materials science–related research.

1.3 The digital record of this object forms part of a continuously expanding dataset intended to provide a citable basis for future cross-object comparative studies. At the present stage, no cross-sample comparative interpretation is conducted.

 

2. Access and Use Guidelines

2.1 Access Restriction

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

2.2 Application Requirements

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

2.3 Usage Limitations

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

 

3. Dataset Composition

3.1 Overview Documentation

High-resolution photographs of the front and reverse sides, documenting overall proportions and geometric structure.

3.2 Measurement Reference

Images incorporating a metric scale for quantitative reference. Measurement data are non-rigorous and provided for reference only.



Length: 5.5 cm

Width: 4.2 cm

Thickness: 2.2 cm

Weight: 72 g


3.3 Microscopic Evidence

High-magnification macro images documenting perforation morphology, micro-weathering features, and observable traces potentially related to material processing.

 

4. Object Image Inventory

The high-resolution images included in this dataset are as follows:



Front view: facial configuration and overall proportions(EANJ_FACE_20_FRONT)

Reverse view: reverse contour morphology(EANJ_FACE_20_REVERSE)

Scale reference view: metric scale included(EANJ_FACE_20_WITH_SCALE)

Reverse macro view: perforation morphology(EANJ_FACE_20_MIC_ONP)(EANJ_FACE_20_MIC_ONP_A)(EANJ_FACE_20_MIC_ONP_B)

Front macro view: lower facial region(EANJ_FACE_20_MIC_FRONT_WEAR_A)

Front macro view: upper facial region(EANJ_FACE_20_MIC_FRONT_WEAR_B)


 

5. Observed Morphological Features

5.1 Overall Form

The object presents a vertically elongated ovoid volumetric form. Both the top and bottom terminate in rounded arcs, with smooth lateral transitions, resulting in a pronounced three-dimensional mass.

5.2 Frontal Facial Features

Brow and Eye RegionThe brow arches are expressed through two smooth, raised curved ridges, with structural articulation achieved through surface undulation. The eyes appear closed and are delineated by spindle-shaped incised grooves.

Nasal FeaturesThe nasal ridge is prominently raised, approximating an olive-shaped form. The nasal wings are rendered in a relatively naturalistic manner. Beneath the nasal tip, two recessed circular nostril-like features are observable.

Midline ExtensionBelow the nose, a vertical infranasal groove extends continuously toward the chin.

MouthThe mouth is positioned at the lower edge of the object and is difficult to observe when viewed parallel to the object’s plane.

5.3 Reverse Features

Perforation StructureA vertically oriented perforation is present near the top of the reverse side, resembling a vertical “ox-nose” configuration. The perforation connects obliquely between circular openings on the top and reverse surfaces.

Internal Perforation ConditionDark deposits are visible within the perforation channel. Under magnification, faint spiral striation traces can be discerned, though not prominently. The internal condition of the perforation differs from the surface state.

Overall Surface TreatmentThe reverse surface is evenly polished and exhibits irregular black and green mineral spots. No additional artificially formed decorative surface structures are observed.

5.4 Material and Surface Condition

Color and TextureThe base material appears grey-white, with a relatively dense distribution of light brown speckles and small areas of green and black mineral inclusions.

Material CharacteristicsThe material is dense and exhibits a luster comparable to a greasy or waxy sheen.

5.5 Interpretive Boundary Statement

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

 

6. Open Questions



Whether the degree of naturalistic representation observed in this object occupies a marginal position within the distribution of comparable recorded specimens.

The functional implications of the vertically oriented perforation: in contrast to more common horizontally aligned perforations, whether this vertical configuration represents an edge case within the recorded sample set.

The formation mechanism of the material and alteration patterns: whether the semi-translucent grey-white base color and speckled surface features reflect intrinsic mineral properties or secondary alterations formed during post-depositional history.


 

7. Imaging and Processing

7.1 All images were captured using a full-frame camera equipped with a 90 mm macro lens, photographed in RAW format, and converted to JPEG files (approximately 42 megapixels per image) without any localized retouching.

7.2 Imaging 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, if any, 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 adhere to fundamental principles of academic data management.

8.2 Prior to digitization and release, the dataset underwent internal risk assessment, including evaluation of publication risks, usage boundaries, and alignment with academic standards, to ensure transparency and procedural rigor.

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