Abstract
| Originalsprog | Engelsk |
|---|---|
| Tidsskrift | International Journal of Coal Geology |
| Vol/bind | 45 |
| Udgave nummer | 1 |
| Sider (fra-til) | 1-19 |
| Antal sider | 20 |
| ISSN | 0166-5162 |
| Status | Udgivet - 2000 |
| Udgivet eksternt | Ja |
Citationsformater
- APA
- Standard
- Harvard
- Vancouver
- Author
- BIBTEX
- RIS
Functional groups and elemental analyses of cuticular morphotypes of Cordaites principalis (Germer) Geinitz, Carboniferous Maritimes Basin, Canada. / Zodrow, Erwin L; Mastalerz, Maria; Orem, William H; Šimunek, Zbynek; Bashforth, Arden Roy.
I: International Journal of Coal Geology, Bind 45, Nr. 1, 2000, s. 1-19.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › peer review
}
TY - JOUR
T1 - Functional groups and elemental analyses of cuticular morphotypes of Cordaites principalis (Germer) Geinitz, Carboniferous Maritimes Basin, Canada
AU - Zodrow, Erwin L
AU - Mastalerz, Maria
AU - Orem, William H
AU - Šimunek, Zbynek
AU - Bashforth, Arden Roy
PY - 2000
Y1 - 2000
N2 - Well-preserved cuticles were isolated from Cordaites principalis (Germar) Geinitz leaf compressions, i.e., foliage fromextinct gymnosperm trees Coniferophyta: Order Cordaitales. The specimens were collected from the Sydney, Stellarton and Bay St. George subbasins of the once extensive Carboniferous Maritimes Basin of Atlantic Canada. Fourier transformation of infrared spectra (FTIR) and elemental analyses indicate that the ca. 300–306-million-year-old fossil cuticles share many of the functional groups observed in modern cuticles. The similarities of the functional groups in each of the three cuticular morphotypes studied support the inclusion into a single cordaite-leaf taxon, i.e., C. principalis (Germar), confirming previous morphological investigations. Vitrinite reflectance measurements on coal seams in close proximity to the fossil-bearing sediments reveal that the Bay St. George sample site has the lowest thermal maturity, whereas the sites in Sydney and Stellarton are more mature. IR absorption and elemental analyses of the cordaite compressions corroborate this trend, which suggests that the coalified mesophyll in the leaves follows a maturation path similar to that of vitrinite.Comparison of functional groups of the cordaite cuticles with those from certain pteridosperms previously studied from the Sydney Subbasin shows that in the cordaite cuticles highly conjugated C–O (1632 cm-1) bands dominate over carbonyl stretch that characterizes the pteridosperm cuticles. The differences demonstrate the potential of chemotaxonomy as a valuable tool to assist distinguishing between Carboniferous plant–fossil groups.
AB - Well-preserved cuticles were isolated from Cordaites principalis (Germar) Geinitz leaf compressions, i.e., foliage fromextinct gymnosperm trees Coniferophyta: Order Cordaitales. The specimens were collected from the Sydney, Stellarton and Bay St. George subbasins of the once extensive Carboniferous Maritimes Basin of Atlantic Canada. Fourier transformation of infrared spectra (FTIR) and elemental analyses indicate that the ca. 300–306-million-year-old fossil cuticles share many of the functional groups observed in modern cuticles. The similarities of the functional groups in each of the three cuticular morphotypes studied support the inclusion into a single cordaite-leaf taxon, i.e., C. principalis (Germar), confirming previous morphological investigations. Vitrinite reflectance measurements on coal seams in close proximity to the fossil-bearing sediments reveal that the Bay St. George sample site has the lowest thermal maturity, whereas the sites in Sydney and Stellarton are more mature. IR absorption and elemental analyses of the cordaite compressions corroborate this trend, which suggests that the coalified mesophyll in the leaves follows a maturation path similar to that of vitrinite.Comparison of functional groups of the cordaite cuticles with those from certain pteridosperms previously studied from the Sydney Subbasin shows that in the cordaite cuticles highly conjugated C–O (1632 cm-1) bands dominate over carbonyl stretch that characterizes the pteridosperm cuticles. The differences demonstrate the potential of chemotaxonomy as a valuable tool to assist distinguishing between Carboniferous plant–fossil groups.
M3 - Journal article
VL - 45
SP - 1
EP - 19
JO - International Journal of Coal Geology
JF - International Journal of Coal Geology
SN - 0166-5162
IS - 1
ER -