English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Peak metamorphic temperature estimates by illite (i.e. Kübler index), chlorite “crystallinity” and vitrinite reflectance exhibit a high degree of uncertainty in case of deep diagenetic to low-grade metamorphic rocks. During the last decade, Raman spectroscopy of carbonaceous materials (RSCM) has become a widespread method for obtaining more precise temperature estimates. The aim of this study is to introduce the theoretical background and applicability of one of the most promising RSCM methods in Hungarian literature. The presented method is based on a calibration curve of a reference series; this series provides an estimation of peak metamorphic temperatures of unknown samples. The application of this reference series enables a comparison to be made of the temperature results with data from other laboratories using the same reference series. In this work, we present the results of the reference series measured at the ELTE TTK KKIC Raman laboratory, along with the computed calibration curve. The applicability of the method is demonstrated using the example of the Telekesoldal Formation of the Aggtelek–Rudabánya Hills. The estimated peak metamorphic temperature of the complex is 273 ± 10 °C, which considerably refines the estimations of previous methods: e.g. illite (Kübler index), chlorite “crystallinity” and vitrinite reflectance values. The method described here can either expand, or partially replace the vitrinite reflectance measurements, with respect to hydrocarbon and coal exploration and research.

földtani közlöny

Szenes anyagok maximális átalakulási hőmérsékletének meghatározása Raman-spektroszkópiai mérésekkel: standardizálás és esettanulmány az Aggtelek–Rudabányai-hegységből