Alvarez Ramis Concepción; Almendros Gonzalo: Characterization of different forms of organic matter in Upper Cretaceous levels from Cerro de La Mesa (Madrid, Spain). In: Plant cell biology and development, (6). pp. 33-43. (1995)
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In addition to the palaeobotanical study of the Cretaceous levels from Cerro de la Mesa (Madrid), the most representative types of organic matter have been analyzed by pyrolysis - gas - chromatography-mass spectrometry. Both megarests and palynomorphs suggested a warm humid forest including large diversity of Angiosperms, Araucariaceae, Taxodiaceae and Cheirolepidiaceae the latter represented mainly by well-preserved cuticles of Frenelopsis oligostomata. The main pyrolysis products from these cuticles were alkyl-substituted polycyclic aromatic molecules such are naphthalenes, anthracenes, and phenanthrenes, as well as some aliphatic hydrocarbons. This pyrolysis pattern was considered to reflect vascular plant remains altered by intense maturation processes. The lignitiferous levels showed, after pyrolysis, similar qualitative composition, but yielded greater amounts of hydroxylated derivatives (phenols, catechols, naphthalenols and biphenylols) and only traces of alkanes and fatty acids, which point to the terrestrial origin of the organic matter. The greatest amounts of the latter two products, as well as of hydroaromatic molecules (tetralins, fluorenes and indenes) and heterocyclic molecules (dibenzofurans and xanthenes) were obtained from the layers consisting of carbonaceous marls, which - in agreement with the palaeobotanic results - could correspond to heavily carbonized material with the most significant input of aliphatic molecules from microorganism and algal biomass, and/or to an early diagenesis in aquatic environment.
| Mű típusa: | Cikk, tanulmány, mű |
|---|---|
| Befoglaló folyóirat/kiadvány címe: | Plant cell biology and development |
| Dátum: | 1995 |
| Kötet: | 6 |
| ISSN: | 0866-5443 |
| Oldalak: | pp. 33-43 |
| Nyelv: | angol |
| Kiadás helye: | Szeged |
| Befoglaló mű URL: | http://acta.bibl.u-szeged.hu/46855/ |
| Kulcsszavak: | Palinológia, Paleobotanika - harmadkor - Spanyolország |
| Megjegyzések: | Bibliogr.: p. 41-43. ; ill. ; összefoglalás angol nyelven |
| Szakterület: | 01. Természettudományok 01. Természettudományok > 01.06. Biológiai tudományok |
| Feltöltés dátuma: | 2017. júl. 11. 14:06 |
| Utolsó módosítás: | 2026. jan. 20. 11:45 |
| URI: | http://acta.bibl.u-szeged.hu/id/eprint/47811 |
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