Szczegóły publikacji
Opis bibliograficzny
Thermal history of the Carboniferous strata in the northern part of the Intra-Sudetic Basin (SW Poland): a combined Raman spectroscopy and organic petrography study / Dariusz BOTOR, Tomasz TOBOŁA, Marta WALICZEK // Acta Geologica Polonica ; ISSN 0001-5709. — 2020 — vol. 70 no. 3, s. 363–396. — Bibliogr. s. 391–396, Abstr.
Autorzy (3)
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 130219 |
|---|---|
| Data dodania do BaDAP | 2020-09-24 |
| Tekst źródłowy | URL |
| DOI | 10.24425/agp.2019.126463 |
| Rok publikacji | 2020 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Acta Geologica Polonica |
Abstract
Raman spectroscopy and vitrinite reflectance measurements of dispersed organic matter from Carboniferous shales in boreholes in the northern part of the Intra-Sudetic Basin were used for thermal history reconstruction. Microscopic investigations have shown that the organic matter is dominated by the vitrinite maceral group. In analysed samples, organic matter shows a varied degree of thermal alteration determined by the mean random vitrinite reflectance (VRo) ranging from 0.72% to 3.80%. Mean apparent maximum vitrinite reflectance (R’max) values reached 4.98%. The full width at half maximum of D1 and G bands in Raman spectra are well-correlated with mean VRo and R’max. Thermal maturity in the boreholes shows a regular increase with depth. Geological data combined with Raman spectroscopy and mean vitrinite reflectance results indicate that the analysed Carboniferous strata reached maximum paleotemperatures from c. 110 to c. 265°C. The regional paleogeothermal gradient in the late Paleozoic was c. 80°C/km. The Variscan heating event presumably caused a major coalification process of organic matter. The Carboniferous–Permian magmatic activity must have contributed to high heat flow, adding to the effect of sedimentary burial on the thermal maturity.
