{"id":"https://openalex.org/W1973333211","doi":"https://doi.org/10.1016/s0146-6380(98)00048-5","title":"Molecular stable carbon isotope compositions of alkylphenanthrenes in coals and marine shales related to source and maturity","display_name":"Molecular stable carbon isotope compositions of alkylphenanthrenes in coals and marine shales related to source and maturity","publication_year":1998,"publication_date":"1998-08-01","ids":{"openalex":"https://openalex.org/W1973333211","doi":"https://doi.org/10.1016/s0146-6380(98)00048-5","mag":"1973333211"},"language":"en","primary_location":{"id":"doi:10.1016/s0146-6380(98)00048-5","doi":"https://doi.org/10.1016/s0146-6380(98)00048-5","is_oa":false,"landing_page_url":"https://doi.org/10.1016/s0146-6380(98)00048-5","pdf_url":null,"source":{"id":"https://openalex.org/S196384270","display_name":"Organic Geochemistry","issn_l":"0146-6380","issn":["0146-6380","1873-5290"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","dongbi-c","jufo-2","norway-1","poland-100","russia-white-list-1"],"host_organization":"https://openalex.org/P4310320990","host_organization_name":"Elsevier BV","host_organization_lineage":["https://openalex.org/P4310320990"],"host_organization_lineage_names":["Elsevier BV"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Organic Geochemistry","raw_type":"journal-article"},"volume":null,"type":"article","is_traditional":true,"indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5109153973","display_name":"Matthias Radke","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I171892758","display_name":"Forschungszentrum J\u00fclich","ror":"https://ror.org/02nv7yv05","country_code":"DE","type":"facility","lineage":["https://openalex.org/I1305996414","https://openalex.org/I171892758"]}],"countries":["DE"],"is_corresponding":true,"raw_author_name":"Matthias Radke","raw_affiliation_strings":["Institute of Petroleum and Organic Geochemistry (ICG-4), Research Centre J\u00fclich, D-52425 J\u00fclich, Germany"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Institute of Petroleum and Organic Geochemistry (ICG-4), Research Centre J\u00fclich, D-52425 J\u00fclich, Germany","institution_ids":["https://openalex.org/I171892758"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5066504838","display_name":"Andreas W. Hilkert","orcid":"https://orcid.org/0000-0003-3571-4540","observed_orcids":["https://orcid.org/0000-0003-3571-4540"]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Andreas Hilkert","raw_affiliation_strings":["Finnigan MAT, Barkhausenstra\u00dfe 2, D-28197 Bremen, Germany"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Finnigan MAT, Barkhausenstra\u00dfe 2, D-28197 Bremen, Germany","institution_ids":[]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5015158174","display_name":"J\u00fcrgen Rullk\u00f6tter","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I129877168","display_name":"Carl von Ossietzky Universit\u00e4t Oldenburg","ror":"https://ror.org/033n9gh91","country_code":"DE","type":"education","lineage":["https://openalex.org/I129877168"]},{"id":"https://openalex.org/I4405252970","display_name":"Institute for Chemistry and Biology of the Marine Environment","ror":"https://ror.org/0060pja03","country_code":"DE","type":"education","lineage":["https://openalex.org/I129877168","https://openalex.org/I4405252970"]}],"countries":["DE"],"is_corresponding":false,"raw_author_name":"J\u00fcrgen Rullk\u00f6tter","raw_affiliation_strings":["Institute of Chemistry und Biology of the Marine Environment (ICBM), Carl von Ossietzky University Oldenburg, P.O. Box 2503, D-26111 Oldenburg, Germany"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Institute of Chemistry und Biology of the Marine Environment (ICBM), Carl von Ossietzky University Oldenburg, P.O. Box 2503, D-26111 Oldenburg, Germany","institution_ids":["https://openalex.org/I129877168","https://openalex.org/I4405252970"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":["https://openalex.org/A5109153973"],"corresponding_institution_ids":["https://openalex.org/I171892758"],"apc_list":{"value":3270,"currency":"USD","value_usd":3270},"apc_paid":null,"fwci":0.3784,"has_fulltext":false,"cited_by_count":41,"citation_normalized_percentile":{"value":0.53718001,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":88,"max":98},"biblio":{"volume":"28","issue":"12","first_page":"785","last_page":"795"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T12218","display_name":"Coal and Its By-products","score":0.7588000297546387,"subfield":{"id":"https://openalex.org/subfields/1906","display_name":"Geochemistry and Petrology"},"field":{"id":"https://openalex.org/fields/19","display_name":"Earth and Planetary Sciences"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T12218","display_name":"Coal and Its By-products","score":0.7588000297546387,"subfield":{"id":"https://openalex.org/subfields/1906","display_name":"Geochemistry and Petrology"},"field":{"id":"https://openalex.org/fields/19","display_name":"Earth and Planetary Sciences"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10399","display_name":"Hydrocarbon exploration and reservoir analysis","score":0.20080000162124634,"subfield":{"id":"https://openalex.org/subfields/1907","display_name":"Geology"},"field":{"id":"https://openalex.org/fields/19","display_name":"Earth and Planetary Sciences"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10109","display_name":"Paleontology and Stratigraphy of Fossils","score":0.025499999523162842,"subfield":{"id":"https://openalex.org/subfields/1911","display_name":"Paleontology"},"field":{"id":"https://openalex.org/fields/19","display_name":"Earth and Planetary Sciences"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/alkylphenanthrenes","display_name":"alkylphenanthrenes","score":0.9319999814033508},{"id":"https://openalex.org/keywords/phenanthrene","display_name":"phenanthrene","score":0.8100000023841858},{"id":"https://openalex.org/keywords/methylphenanthrenes","display_name":"methylphenanthrenes","score":0.996999979019165},{"id":"https://openalex.org/keywords/stable-carbon-isotopes","display_name":"stable carbon isotopes","score":0.9490000009536743},{"id":"https://openalex.org/keywords/delta13c","display_name":"\u03b413C","score":0.8379999995231628},{"id":"https://openalex.org/keywords/coal","display_name":"coal","score":0.7879999876022339},{"id":"https://openalex.org/keywords/marine-shale","display_name":"marine shale","score":0.7879999876022339},{"id":"https://openalex.org/keywords/coaly-shale","display_name":"coaly shale","score":0.718999981880188},{"id":"https://openalex.org/keywords/thermal-maturity","display_name":"thermal maturity","score":0.7379999756813049},{"id":"https://openalex.org/keywords/vitrinite-reflectance","display_name":"vitrinite reflectance","score":0.925000011920929},{"id":"https://openalex.org/keywords/organic-matter-type","display_name":"organic matter type","score":0.8019999861717224}],"concepts":[{"id":"https://openalex.org/C153127940","wikidata":"https://www.wikidata.org/wiki/Q221378","display_name":"Oil shale","level":2,"score":0.7375232577323914},{"id":"https://openalex.org/C2777101687","wikidata":"https://www.wikidata.org/wiki/Q3496596","display_name":"Vitrinite","level":3,"score":0.7123941779136658},{"id":"https://openalex.org/C101433766","wikidata":"https://www.wikidata.org/wiki/Q3543263","display_name":"Maturity (psychological)","level":2,"score":0.6898237466812134},{"id":"https://openalex.org/C48743137","wikidata":"https://www.wikidata.org/wiki/Q1783121","display_name":"Organic matter","level":2,"score":0.6764214038848877},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.5969144105911255},{"id":"https://openalex.org/C185059815","wikidata":"https://www.wikidata.org/wiki/Q471790","display_name":"Isotopes of carbon","level":3,"score":0.5898644924163818},{"id":"https://openalex.org/C156398188","wikidata":"https://www.wikidata.org/wiki/Q3278929","display_name":"\u03b413C","level":3,"score":0.5633870959281921},{"id":"https://openalex.org/C199289684","wikidata":"https://www.wikidata.org/wiki/Q83353","display_name":"Mineralogy","level":1,"score":0.5485074520111084},{"id":"https://openalex.org/C518851703","wikidata":"https://www.wikidata.org/wiki/Q24489","display_name":"Coal","level":2,"score":0.5265350937843323},{"id":"https://openalex.org/C2776891815","wikidata":"https://www.wikidata.org/wiki/Q422037","display_name":"Phenanthrene","level":2,"score":0.4842509925365448},{"id":"https://openalex.org/C126559015","wikidata":"https://www.wikidata.org/wiki/Q1988844","display_name":"Source rock","level":3,"score":0.47577348351478577},{"id":"https://openalex.org/C140205800","wikidata":"https://www.wikidata.org/wiki/Q5860","display_name":"Carbon fibers","level":3,"score":0.473422110080719},{"id":"https://openalex.org/C158787203","wikidata":"https://www.wikidata.org/wiki/Q900291","display_name":"Total organic carbon","level":2,"score":0.4592738747596741},{"id":"https://openalex.org/C107872376","wikidata":"https://www.wikidata.org/wiki/Q321355","display_name":"Environmental chemistry","level":1,"score":0.4510464370250702},{"id":"https://openalex.org/C22117777","wikidata":"https://www.wikidata.org/wiki/Q17148629","display_name":"Stable isotope ratio","level":2,"score":0.44735467433929443},{"id":"https://openalex.org/C164304813","wikidata":"https://www.wikidata.org/wiki/Q25276","display_name":"Isotope","level":2,"score":0.4468897581100464},{"id":"https://openalex.org/C17409809","wikidata":"https://www.wikidata.org/wiki/Q161764","display_name":"Geochemistry","level":1,"score":0.4353887438774109},{"id":"https://openalex.org/C2779196632","wikidata":"https://www.wikidata.org/wiki/Q938398","display_name":"Kerogen","level":4,"score":0.41790586709976196},{"id":"https://openalex.org/C185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","level":0,"score":0.28777408599853516},{"id":"https://openalex.org/C151730666","wikidata":"https://www.wikidata.org/wiki/Q7205","display_name":"Paleontology","level":1,"score":0.1984771490097046},{"id":"https://openalex.org/C6494504","wikidata":"https://www.wikidata.org/wiki/Q82480","display_name":"Sedimentary rock","level":2,"score":0.1894083023071289},{"id":"https://openalex.org/C159985019","wikidata":"https://www.wikidata.org/wiki/Q181790","display_name":"Composite material","level":1,"score":0.0},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.0},{"id":"https://openalex.org/C109007969","wikidata":"https://www.wikidata.org/wiki/Q749565","display_name":"Structural basin","level":2,"score":0.0},{"id":"https://openalex.org/C178790620","wikidata":"https://www.wikidata.org/wiki/Q11351","display_name":"Organic chemistry","level":1,"score":0.0},{"id":"https://openalex.org/C192562407","wikidata":"https://www.wikidata.org/wiki/Q228736","display_name":"Materials science","level":0,"score":0.0},{"id":"https://openalex.org/C104779481","wikidata":"https://www.wikidata.org/wiki/Q50707","display_name":"Composite number","level":2,"score":0.0},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.0},{"id":"https://openalex.org/C138496976","wikidata":"https://www.wikidata.org/wiki/Q175002","display_name":"Developmental psychology","level":1,"score":0.0},{"id":"https://openalex.org/C15744967","wikidata":"https://www.wikidata.org/wiki/Q9418","display_name":"Psychology","level":0,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1016/s0146-6380(98)00048-5","doi":"https://doi.org/10.1016/s0146-6380(98)00048-5","is_oa":false,"landing_page_url":"https://doi.org/10.1016/s0146-6380(98)00048-5","pdf_url":null,"source":{"id":"https://openalex.org/S196384270","display_name":"Organic Geochemistry","issn_l":"0146-6380","issn":["0146-6380","1873-5290"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","dongbi-c","jufo-2","norway-1","poland-100","russia-white-list-1"],"host_organization":"https://openalex.org/P4310320990","host_organization_name":"Elsevier BV","host_organization_lineage":["https://openalex.org/P4310320990"],"host_organization_lineage_names":["Elsevier BV"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Organic Geochemistry","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":53,"referenced_works":["https://openalex.org/W140802320","https://openalex.org/W1964337789","https://openalex.org/W1967895542","https://openalex.org/W1968679275","https://openalex.org/W1968824027","https://openalex.org/W1969558356","https://openalex.org/W1969592314","https://openalex.org/W1980400220","https://openalex.org/W1984109618","https://openalex.org/W1988032282","https://openalex.org/W1988670693","https://openalex.org/W1995543845","https://openalex.org/W1997140539","https://openalex.org/W1997599363","https://openalex.org/W1999689861","https://openalex.org/W2000275917","https://openalex.org/W2003639469","https://openalex.org/W2006147864","https://openalex.org/W2008270370","https://openalex.org/W2013675695","https://openalex.org/W2017618345","https://openalex.org/W2017633530","https://openalex.org/W2017939025","https://openalex.org/W2022132363","https://openalex.org/W2035571783","https://openalex.org/W2047384603","https://openalex.org/W2048850935","https://openalex.org/W2050108022","https://openalex.org/W2051648996","https://openalex.org/W2054572860","https://openalex.org/W2054961255","https://openalex.org/W2056160475","https://openalex.org/W2060229458","https://openalex.org/W2062333818","https://openalex.org/W2065816346","https://openalex.org/W2067684409","https://openalex.org/W2071465468","https://openalex.org/W2072689504","https://openalex.org/W2082507943","https://openalex.org/W2083455968","https://openalex.org/W2084728071","https://openalex.org/W2087985655","https://openalex.org/W2088603475","https://openalex.org/W2090143041","https://openalex.org/W2092169619","https://openalex.org/W2139401489","https://openalex.org/W2265339695","https://openalex.org/W2747785750","https://openalex.org/W2748378551","https://openalex.org/W3007567706","https://openalex.org/W3121316336","https://openalex.org/W4211110706","https://openalex.org/W4233167085"],"related_works":["https://openalex.org/W4229953856","https://openalex.org/W2064897232","https://openalex.org/W4230606342","https://openalex.org/W4254950890","https://openalex.org/W4410345968","https://openalex.org/W2035540455","https://openalex.org/W2048190924","https://openalex.org/W1984736988","https://openalex.org/W2381616942","https://openalex.org/W3140629600"],"abstract_inverted_index":null,"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2025,"cited_by_count":3},{"year":2024,"cited_by_count":2},{"year":2023,"cited_by_count":3},{"year":2022,"cited_by_count":4},{"year":2021,"cited_by_count":2},{"year":2020,"cited_by_count":3},{"year":2019,"cited_by_count":1},{"year":2018,"cited_by_count":1},{"year":2017,"cited_by_count":2},{"year":2016,"cited_by_count":1},{"year":2014,"cited_by_count":5}],"updated_date":"2026-09-22T06:50:58.402377","created_date":"2016-06-24T00:00:00"}
