C 6.2. Glass-like layers
Areas of the parchment with an altered appearance resulting from localised degradation.
The physical condition of the parchment is directly impacted by the degradation of the collagen fibres (total or partial gelatinisation). The existence of glass-like areas is an indication of degradation. These are areas where structural and chemical changes also cause the visible transformation of the surface, by changing its relief and tonality. The transparency of the parchment also changes, by both decreasing or increasing. The presence of glass-like areas is, in turn, one of the main causes of document deformation. The presence of glass-like areas is a direct indication of a decrease in the physical strength and hydrothermal stability of the parchment. Glass-like areas are often the combined result of several causes.
Ürik AM.104.5.14, 18. saj.
Klaasjas ala
Üle pinna klaasja alaga, degradeerunud pärgament.
Klaasjad alad koos väljasadenenud kaltsiidi või kipsi valge sademega on muutnud pärgamendi jäigaks.
Degraded parchment with glazed area over surface.
Vitreous areas with a white precipitate of precipitated calcite or gypsum have made the parchment rigid.
Ürik EAA.854.7.657, 1745. a.
Klaasjas ala.
Üle pinna klaasja alaga, degradeerunud pärgament on dokumenteeritud läbivas valguses.
Klaasjad alad murdejoonte piirkonnas on muutnud pärgamendi läbipaistvaks.
With a glassy area over the surface, the degraded parchment is documented in transmitted light.
Glassy areas in the area of the fold lines have made the parchment transparent.
Klaasjas ala.
Üle pinna klaasja alaga, degradeerunud pärgament.
Degraded parchment with glazed area over surface.
Ürik TLA.230.1-ii.170, 1525. a.
Klaasjas ala.
Lokaalse klaasja alaga, degradeerunud pärgament on dokumenteeritud kaldvalguses.
With a local glassy area, the degraded parchment is documented in oblique light.
Ürik TLA.230.1-ii.170, 1525.
Klaasjas ala.
Üle pinna klaasja alaga, degradeerunud pärgament on dokumenteeritud läbivas valguses.
Klaasjad alad murdejoonte piirkonnas on muutnud pärgamendi läbipaistvamaks ülejäänud pärgamendist..
With a glassy area over the surface, the degraded parchment is documented in transmitted light.
The glassy areas in the area of the fold lines have made the parchment more transparent than the rest of the parchment.
Ürik TLA.230.1.BB_24/ii, 1381. a.
Klaasjas ala.
Üle pinna klaasjate aladega, degradeerunud pärgament on dokumenteeritud läbivas valguses.
Klaasjad alad pärgamendi murdejoonte piirkonnas on muutnud pärgamendi läbipaistvamaks ülejäänud pärgamendist.
Over the surface with vitreous areas, the degraded parchment is documented in transmitted light.
The glassy areas in the area of the fold lines of the parchment have made the parchment more transparent than the rest of the parchment.
Klaasjas ala.
Lokaalselt tugevalt degradeerunud, klaasja alaga pärgament.
Locally heavily degraded parchment with a glassy area.
Klaasjas ala. Üle pinna klaasja alaga, degradeerunud pärgament. Heledam osa pärgamentdokumendi pealmisel poolel on ala, mis ei ole veel lõpuni degradeerunud.
Degraded parchment with glazed area over surface. The lighter part on the top side of the parchment document is the area that has not yet fully degraded.
Klaasjas ala.
Üle pinna klaasja alaga, degradeerunud pärgament. Heledam osa pärgamentdokumendi tagumisel poolel on ala, mis ei ole veel lõpuni degradeerunud.
Degraded parchment with glazed area over surface. The lighter part on the reverse side of the parchment document is the area that has not yet fully degraded.
Klaasjas ala.
Muutunud välisilmega ala, mis on tekkinud pärgamendi lokaalse degradeerumise tulemusena.
An area with a changed appearance resulting from local degradation of the parchment
Klaasjas ala.
Muutunud välisilmega pärgament. Üle kogu pinna klaasja alaga tugevalt degradeerunud pärgament.
Parchment with an altered appearance. Heavily degraded parchment with a glassy area over the entire surface.
Ürik TLA.230.1-i.966, 1523. a.
Klaasjas ala.
Muutunud välisilmega alad, mis on tekkinud pärgamendi lokaalse degradeerumise tulemusena
Üriku verso poolel olev degradeerunud pindmine kiht on põhjustanud kogu pärgamenti läbiva klaasja ala tekke.
Areas of altered appearance resulting from local degradation of the parchment
The degraded surface layer on the verso side of the document has resulted in the formation of a glassy area running through the entire parchment.