{"id":"https://openalex.org/W257189233","doi":null,"title":"Biological markers in the sedimentary record","display_name":"Biological markers in the sedimentary record","publication_year":1986,"publication_date":"1986-01-01","ids":{"openalex":"https://openalex.org/W257189233","mag":"257189233"},"language":"en","primary_location":{"id":"mag:257189233","doi":null,"is_oa":false,"landing_page_url":"http://ci.nii.ac.jp/ncid/BA04269205","pdf_url":null,"source":{"id":"https://openalex.org/S4306463230","display_name":"Elsevier eBooks","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"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":"ebook platform"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":"Elsevier eBooks","raw_type":null},"volume":null,"type":"book","is_traditional":true,"indexed_in":[],"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/A5110435772","display_name":"R.B. Johns","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":true,"raw_author_name":"R.B. Johns","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":0,"corresponding_author_ids":["https://openalex.org/A5110435772"],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":5.5177,"has_fulltext":false,"cited_by_count":407,"citation_normalized_percentile":{"value":0.9483871,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":88,"max":99},"biblio":{"volume":null,"issue":null,"first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10399","display_name":"Hydrocarbon exploration and reservoir analysis","score":0.5273000001907349,"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"}},"topics":[{"id":"https://openalex.org/T10399","display_name":"Hydrocarbon exploration and reservoir analysis","score":0.5273000001907349,"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":0.42969998717308044,"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"}},{"id":"https://openalex.org/T11630","display_name":"Petroleum Processing and Analysis","score":0.010900000110268593,"subfield":{"id":"https://openalex.org/subfields/1602","display_name":"Analytical Chemistry"},"field":{"id":"https://openalex.org/fields/16","display_name":"Chemistry"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/biomarkers","display_name":"biomarkers","score":0.9179999828338623},{"id":"https://openalex.org/keywords/sedimentary-record","display_name":"sedimentary record","score":0.7799999713897705},{"id":"https://openalex.org/keywords/acyclic-isoprenoids","display_name":"acyclic isoprenoids","score":0.9789999723434448},{"id":"https://openalex.org/keywords/steroids","display_name":"steroids","score":0.7260000109672546},{"id":"https://openalex.org/keywords/porphyrins","display_name":"porphyrins","score":0.9990000128746033},{"id":"https://openalex.org/keywords/petroleum-exploration","display_name":"petroleum exploration","score":0.9769999980926514},{"id":"https://openalex.org/keywords/marine-bacteria","display_name":"marine bacteria","score":0.7770000100135803},{"id":"https://openalex.org/keywords/fatty-acids","display_name":"fatty acids","score":0.7760000228881836},{"id":"https://openalex.org/keywords/bacterial-pigments","display_name":"bacterial pigments","score":0.7799999713897705},{"id":"https://openalex.org/keywords/coal","display_name":"coal","score":0.7670000195503235},{"id":"https://openalex.org/keywords/carbon-isotopes","display_name":"carbon isotopes","score":0.6669999957084656},{"id":"https://openalex.org/keywords/biogenicity","display_name":"biogenicity","score":0.8569999933242798}],"concepts":[{"id":"https://openalex.org/C130452526","wikidata":"https://www.wikidata.org/wiki/Q180621","display_name":"Diagenesis","level":2,"score":0.6648774147033691},{"id":"https://openalex.org/C206103511","wikidata":"https://www.wikidata.org/wiki/Q426694","display_name":"Terpenoid","level":2,"score":0.5968453288078308},{"id":"https://openalex.org/C185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","level":0,"score":0.4745814800262451},{"id":"https://openalex.org/C162356407","wikidata":"https://www.wikidata.org/wiki/Q180809","display_name":"Mass spectrometry","level":2,"score":0.4727407693862915},{"id":"https://openalex.org/C167195282","wikidata":"https://www.wikidata.org/wiki/Q108573225","display_name":"Hopanoids","level":4,"score":0.4610997140407562},{"id":"https://openalex.org/C123460561","wikidata":"https://www.wikidata.org/wiki/Q677065","display_name":"Gas chromatography","level":2,"score":0.46079546213150024},{"id":"https://openalex.org/C44937612","wikidata":"https://www.wikidata.org/wiki/Q212364","display_name":"Terpene","level":2,"score":0.41777315735816956},{"id":"https://openalex.org/C71240020","wikidata":"https://www.wikidata.org/wiki/Q186011","display_name":"Stereochemistry","level":1,"score":0.3911213278770447},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.31585878133773804},{"id":"https://openalex.org/C199289684","wikidata":"https://www.wikidata.org/wiki/Q83353","display_name":"Mineralogy","level":1,"score":0.23363295197486877},{"id":"https://openalex.org/C43617362","wikidata":"https://www.wikidata.org/wiki/Q170050","display_name":"Chromatography","level":1,"score":0.22785097360610962},{"id":"https://openalex.org/C151730666","wikidata":"https://www.wikidata.org/wiki/Q7205","display_name":"Paleontology","level":1,"score":0.14979243278503418},{"id":"https://openalex.org/C126559015","wikidata":"https://www.wikidata.org/wiki/Q1988844","display_name":"Source rock","level":3,"score":0.14016592502593994},{"id":"https://openalex.org/C109007969","wikidata":"https://www.wikidata.org/wiki/Q749565","display_name":"Structural basin","level":2,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"mag:257189233","doi":null,"is_oa":false,"landing_page_url":"http://ci.nii.ac.jp/ncid/BA04269205","pdf_url":null,"source":{"id":"https://openalex.org/S4306463230","display_name":"Elsevier eBooks","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"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":"ebook platform"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":"Elsevier eBooks","raw_type":null}],"best_oa_location":null,"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":0,"referenced_works":[],"related_works":["https://openalex.org/W572481560","https://openalex.org/W590408106","https://openalex.org/W2104071891","https://openalex.org/W1980400220","https://openalex.org/W1980867189","https://openalex.org/W2473152502","https://openalex.org/W2491646257","https://openalex.org/W4252348160","https://openalex.org/W2780421850","https://openalex.org/W2464699815"],"abstract_inverted_index":{"1.":[0],"Acyclic":[1],"Isoprenoids":[2],"as":[3,104],"Biological":[4,44,65,89],"Markers":[5,45,58,66,76,90],"(J.K.":[6],"Volkman":[7],"J.R.":[8],"Maxwell).":[9],"2.":[10],"Cyclic":[11],"Terpenoids":[12],"of":[13,21,43,64,106],"the":[14,31],"Geosphere":[15],"(B.R.T.":[16],"Simoneit).":[17],"3.":[18],"Early-Stage":[19],"Diagenesis":[20],"Steroids":[22],"(J.W.":[23,59],"de":[24,60],"Leeuw,":[25],"M.":[26],"Baas).":[27],"4.":[28],"Porphyrins":[29],"in":[30,67],"Geological":[32],"Record":[33],"(E.W.":[34],"Baker,":[35],"J.W.":[36],"Louda).":[37],"5.":[38],"The":[39],"Detection":[40],"and":[41,82],"Identification":[42],"by":[46],"Computerized":[47],"Gas":[48],"Chromatography":[49],"Mass":[50],"Spectrometry":[51],"(R.P.":[52],"Philp,":[53],"T.D.":[54],"Gilbert).":[55],"6.":[56],"Higher-Molecular-Weight":[57],"Leeuw).":[61],"7.":[62],"Use":[63],"Petroleum":[68],"Exploration":[69],"(W.K.":[70],"Seifert,":[71],"J.M.":[72],"Moldowan).":[73],"8.":[74],"Chemical":[75],"for":[77],"Marine":[78],"Bacteria:":[79],"Fatty":[80],"Acids":[81],"Pigments":[83],"(F.T.":[84],"Gillan,":[85],"R.B.":[86],"Johns).":[87],"9.":[88],"Extractable":[91],"from":[92],"Coal":[93],"(A.L.":[94],"Chaffee":[95],"et":[96],"al.).":[97],"10.":[98],"13":[99],"C/":[100],"12":[101],"C":[102],"Ratios":[103],"Indicators":[105],"Biogenicity":[107],"(M.":[108],"Schidlowski).":[109],"Index.":[110]},"counts_by_year":[{"year":2023,"cited_by_count":1},{"year":2021,"cited_by_count":4},{"year":2019,"cited_by_count":1},{"year":2018,"cited_by_count":2},{"year":2017,"cited_by_count":5},{"year":2016,"cited_by_count":3},{"year":2015,"cited_by_count":5},{"year":2014,"cited_by_count":7},{"year":2013,"cited_by_count":9},{"year":2012,"cited_by_count":5}],"updated_date":"2026-11-03T10:50:19.383937","created_date":"2016-06-24T00:00:00"}
