{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,28]],"date-time":"2026-02-28T08:00:37Z","timestamp":1772265637821,"version":"3.50.1"},"reference-count":69,"publisher":"MDPI AG","issue":"5","license":[{"start":{"date-parts":[[2021,5,14]],"date-time":"2021-05-14T00:00:00Z","timestamp":1620950400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100008991","name":"Universit\u00e0 degli Studi Roma Tre","doi-asserted-by":"publisher","award":["REP. 22 - PROT. 219 of the 26\/01\/ 2017"],"award-info":[{"award-number":["REP. 22 - PROT. 219 of the 26\/01\/ 2017"]}],"id":[{"id":"10.13039\/100008991","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100008991","name":"Universit\u00e0 degli Studi Roma Tre","doi-asserted-by":"publisher","award":["Grant of Excellence Departments, MIUR (ARTICOLO 1, COMMI 314\u2013337 LEGGE 232\/2016)"],"award-info":[{"award-number":["Grant of Excellence Departments, MIUR (ARTICOLO 1, COMMI 314\u2013337 LEGGE 232\/2016)"]}],"id":[{"id":"10.13039\/100008991","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Geosciences"],"abstract":"<jats:p>In this study, we propose a predictive model for maceral discrimination based on Raman spectroscopic analyses of dispersed organic matter. Raman micro-spectroscopy was coupled with optical and Rock-Eval pyrolysis analyses on a set of seven samples collected from Mesozoic and Cenozoic successions of the Outer sector of the Carpathian fold and thrust belt. Organic petrography and Rock-Eval pyrolysis evidence a type II\/III kerogen with complex organofacies composed by the coal maceral groups of the vitrinite, inertinite, and liptinite, while thermal maturity lies at the onset of the oil window spanning between 0.42 and 0.61 Ro%. Micro-Raman analyses were performed, on approximately 30\u2013100 spectra per sample but only for relatively few fragments was it possible to perform an optical classification according to their macerals group. A multivariate statistical analysis of the identified vitrinite and inertinite spectra allows to define the variability of the organofacies and develop a predictive PLS-DA model for the identification of vitrinite from Raman spectra. Following the first attempts made in the last years, this work outlines how machine learning techniques have become a useful support for classical petrography analyses in thermal maturity assessment.<\/jats:p>","DOI":"10.3390\/geosciences11050213","type":"journal-article","created":{"date-parts":[[2021,5,14]],"date-time":"2021-05-14T10:54:22Z","timestamp":1620989662000},"page":"213","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["A Predictive Model for Maceral Discrimination by Means of Raman Spectra on Dispersed Organic Matter: A Case Study from the Carpathian Fold-and-Thrust Belt (Ukraine)"],"prefix":"10.3390","volume":"11","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0760-9321","authenticated-orcid":false,"given":"Andrea","family":"Schito","sequence":"first","affiliation":[{"name":"Dipartimento di Scienze, Sezione Scienze Geologiche, Universit\u00e0 degli Studi di Roma Tre, Largo San Leonardo Murialdo, 1, 00146 Rome, Italy"},{"name":"Department of Geology and Petroleum Geology, School of Geosciences, University of Aberdeen, Aberdeen AB24 3UE, UK"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6397-3713","authenticated-orcid":false,"given":"Alexandra","family":"Guedes","sequence":"additional","affiliation":[{"name":"Insituto da Ci\u00eancias da Terra e Departamento de Geosci\u00eancias, Ambiente e Ordenamento do Territ\u00f2rio, Faculdade de Ci\u00eancias, Universidade do Porto, 4169-007 Porto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1463-9126","authenticated-orcid":false,"given":"Bruno","family":"Valentim","sequence":"additional","affiliation":[{"name":"Insituto da Ci\u00eancias da Terra e Departamento de Geosci\u00eancias, Ambiente e Ordenamento do Territ\u00f2rio, Faculdade de Ci\u00eancias, Universidade do Porto, 4169-007 Porto, Portugal"}]},{"given":"Natalia","family":"Vergara Sassarini","sequence":"additional","affiliation":[{"name":"Dipartimento di Scienze, Sezione Scienze Geologiche, Universit\u00e0 degli Studi di Roma Tre, Largo San Leonardo Murialdo, 1, 00146 Rome, Italy"}]},{"given":"Sveva","family":"Corrado","sequence":"additional","affiliation":[{"name":"Dipartimento di Scienze, Sezione Scienze Geologiche, Universit\u00e0 degli Studi di Roma Tre, Largo San Leonardo Murialdo, 1, 00146 Rome, Italy"}]}],"member":"1968","published-online":{"date-parts":[[2021,5,14]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"8","DOI":"10.1016\/j.coal.2016.06.010","article-title":"Application of organic petrography in North American shale petroleum systems: A review","volume":"163","author":"Hackley","year":"2016","journal-title":"Int. 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