Preparing and analyzing fractured archaeological fibers.

Area of Science:

• Archaeological science
• Materials science
• Analytical chemistry

Background:

• Analyzing the interior of archaeological fibers is crucial for understanding their history.
• Previous methods were limited in their ability to reveal internal fiber characteristics.
• A novel technique is needed to access detailed chemical and morphological information from ancient fibers.

Purpose of the Study:

• To develop and validate a new technique for preparing archaeological fiber cross-sections.
• To enable detailed internal analysis of single fibers using electron microscopy and X-ray analysis.
• To apply this method to ancient fibers from diverse storage conditions to understand their preservation.

Main Methods:

• Fibers were fractured under frozen conditions and then freeze-dried.
• Prepared samples underwent scanning and backscatter electron microscopy.
• Energy-dispersive spectrometry was used for elemental analysis, with image processing for mapping elemental distribution.

Main Results:

• The technique successfully prepared archaeological fiber cross-sections for microscopic and X-ray analysis.
• Chemical and morphological data were obtained from the interior of individual ancient fibers.
• Analysis of fibers from moist buried, dry buried, and museum-stored environments yielded distinct preservation profiles.

Conclusions:

• The developed technique provides unprecedented insight into the internal state of archaeological fibers.
• This method allows for the reconstruction of a fiber's growth, processing, use, and long-term storage history.
• The findings highlight the importance of internal fiber analysis for archaeological research and artifact preservation.