{"id":"https://openalex.org/W1964355271","doi":"https://doi.org/10.1126/science.282.5390.927","title":"Isotopic Evidence for the Cretaceous-Tertiary Impactor and Its Type","display_name":"Isotopic Evidence for the Cretaceous-Tertiary Impactor and Its Type","publication_year":1998,"publication_date":"1998-10-30","ids":{"openalex":"https://openalex.org/W1964355271","doi":"https://doi.org/10.1126/science.282.5390.927","mag":"1964355271","pmid":"https://pubmed.ncbi.nlm.nih.gov/9794759"},"language":"en","primary_location":{"id":"doi:10.1126/science.282.5390.927","doi":"https://doi.org/10.1126/science.282.5390.927","is_oa":false,"landing_page_url":"https://doi.org/10.1126/science.282.5390.927","pdf_url":null,"source":{"id":"https://openalex.org/S3880285","display_name":"Science","issn_l":"0036-8075","issn":["0036-8075","0193-4511","1095-9203"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-class-a","anvur-scientific","cwts-core","dongbi-a","doyens","erih-plus","jufo-3","ki-jl-3","medline","norway-2","poland-200","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310315823","host_organization_name":"American Association for the Advancement of Science","host_organization_lineage":["https://openalex.org/P4310315823"],"host_organization_lineage_names":["American Association for the Advancement of Science"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Science","raw_type":"journal-article"},"volume":null,"type":"article","is_traditional":true,"indexed_in":["crossref","pubmed"],"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/A5111487833","display_name":"Alex Shukolyukov","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I150209017","display_name":"Scripps Institution of Oceanography","ror":"https://ror.org/04v7hvq31","country_code":"US","type":"facility","lineage":["https://openalex.org/I150209017","https://openalex.org/I36258959"]},{"id":"https://openalex.org/I36258959","display_name":"University of California San Diego","ror":"https://ror.org/0168r3w48","country_code":"US","type":"education","lineage":["https://openalex.org/I36258959"]},{"id":"https://openalex.org/I4210113422","display_name":"Max Planck Institute for Chemistry","ror":"https://ror.org/02f5b7n18","country_code":"DE","type":"facility","lineage":["https://openalex.org/I149899117","https://openalex.org/I4210113422"]}],"countries":["DE","US"],"is_corresponding":false,"raw_author_name":"A. Shukolyukov","raw_affiliation_strings":["A. Shukolyukov, Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA 92093\u20130212, USA. G. W. Lugmair, Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA 92093\u20130212, USA, and Max-Planck-Institute for Chemistry, Cosmochemistry, Post Office Box 3060, 55020 Mainz, Germany"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"A. Shukolyukov, Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA 92093\u20130212, USA. G. W. Lugmair, Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA 92093\u20130212, USA, and Max-Planck-Institute for Chemistry, Cosmochemistry, Post Office Box 3060, 55020 Mainz, Germany","institution_ids":["https://openalex.org/I150209017","https://openalex.org/I36258959","https://openalex.org/I4210113422"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5057619684","display_name":"Guenter W. Lugmair","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I150209017","display_name":"Scripps Institution of Oceanography","ror":"https://ror.org/04v7hvq31","country_code":"US","type":"facility","lineage":["https://openalex.org/I150209017","https://openalex.org/I36258959"]},{"id":"https://openalex.org/I36258959","display_name":"University of California San Diego","ror":"https://ror.org/0168r3w48","country_code":"US","type":"education","lineage":["https://openalex.org/I36258959"]},{"id":"https://openalex.org/I4210113422","display_name":"Max Planck Institute for Chemistry","ror":"https://ror.org/02f5b7n18","country_code":"DE","type":"facility","lineage":["https://openalex.org/I149899117","https://openalex.org/I4210113422"]}],"countries":["DE","US"],"is_corresponding":false,"raw_author_name":"G. W. Lugmair","raw_affiliation_strings":["A. Shukolyukov, Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA 92093\u20130212, USA. G. W. Lugmair, Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA 92093\u20130212, USA, and Max-Planck-Institute for Chemistry, Cosmochemistry, Post Office Box 3060, 55020 Mainz, Germany"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"A. Shukolyukov, Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA 92093\u20130212, USA. G. W. Lugmair, Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA 92093\u20130212, USA, and Max-Planck-Institute for Chemistry, Cosmochemistry, Post Office Box 3060, 55020 Mainz, Germany","institution_ids":["https://openalex.org/I150209017","https://openalex.org/I36258959","https://openalex.org/I4210113422"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":3,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":5.5587,"has_fulltext":false,"cited_by_count":211,"citation_normalized_percentile":{"value":0.9583263,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":93,"max":99},"biblio":{"volume":"282","issue":"5390","first_page":"927","last_page":"930"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10325","display_name":"Astro and Planetary Science","score":0.9746000170707703,"subfield":{"id":"https://openalex.org/subfields/1912","display_name":"Space and Planetary Science"},"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/T10325","display_name":"Astro and Planetary Science","score":0.9746000170707703,"subfield":{"id":"https://openalex.org/subfields/1912","display_name":"Space and Planetary Science"},"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":0.023000000044703484,"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/T10001","display_name":"Geological and Geochemical Analysis","score":0.0010000000474974513,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/cretaceous-paleogene-boundary","display_name":"Cretaceous-Paleogene boundary","score":0.9909999966621399},{"id":"https://openalex.org/keywords/mass-extinction","display_name":"mass extinction","score":0.6919999718666077},{"id":"https://openalex.org/keywords/impact-hypothesis","display_name":"impact hypothesis","score":0.6359999775886536},{"id":"https://openalex.org/keywords/chromium-isotopes","display_name":"chromium isotopes","score":0.8519999980926514},{"id":"https://openalex.org/keywords/carbonaceous-chondrites","display_name":"carbonaceous chondrites","score":0.9539999961853027},{"id":"https://openalex.org/keywords/meteorite-classification","display_name":"meteorite classification","score":0.6470000147819519},{"id":"https://openalex.org/keywords/stevns-klint","display_name":"Stevns Klint","score":0.9559999704360962},{"id":"https://openalex.org/keywords/caravaca","display_name":"Caravaca","score":0.9330000281333923}],"concepts":[{"id":"https://openalex.org/C130635790","wikidata":"https://www.wikidata.org/wiki/Q60186","display_name":"Meteorite","level":2,"score":0.8010715842247009},{"id":"https://openalex.org/C116862484","wikidata":"https://www.wikidata.org/wiki/Q48361","display_name":"Chondrite","level":3,"score":0.7050465941429138},{"id":"https://openalex.org/C511782168","wikidata":"https://www.wikidata.org/wiki/Q725","display_name":"Chromium","level":2,"score":0.6987678408622742},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.6073197722434998},{"id":"https://openalex.org/C12294951","wikidata":"https://www.wikidata.org/wiki/Q44626","display_name":"Cretaceous","level":2,"score":0.5924524664878845},{"id":"https://openalex.org/C2779517257","wikidata":"https://www.wikidata.org/wiki/Q1062169","display_name":"Carbonaceous chondrite","level":4,"score":0.48331308364868164},{"id":"https://openalex.org/C98536072","wikidata":"https://www.wikidata.org/wiki/Q181508","display_name":"Extraterrestrial life","level":2,"score":0.46496516466140747},{"id":"https://openalex.org/C17409809","wikidata":"https://www.wikidata.org/wiki/Q161764","display_name":"Geochemistry","level":1,"score":0.46114712953567505},{"id":"https://openalex.org/C164304813","wikidata":"https://www.wikidata.org/wiki/Q25276","display_name":"Isotope","level":2,"score":0.43898576498031616},{"id":"https://openalex.org/C35306142","wikidata":"https://www.wikidata.org/wiki/Q55814","display_name":"Extinction event","level":4,"score":0.42167508602142334},{"id":"https://openalex.org/C199289684","wikidata":"https://www.wikidata.org/wiki/Q83353","display_name":"Mineralogy","level":1,"score":0.4035613536834717},{"id":"https://openalex.org/C87355193","wikidata":"https://www.wikidata.org/wiki/Q411","display_name":"Astrobiology","level":1,"score":0.37866371870040894},{"id":"https://openalex.org/C151730666","wikidata":"https://www.wikidata.org/wiki/Q7205","display_name":"Paleontology","level":1,"score":0.27556854486465454},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.18759891390800476},{"id":"https://openalex.org/C192562407","wikidata":"https://www.wikidata.org/wiki/Q228736","display_name":"Materials science","level":0,"score":0.16769370436668396},{"id":"https://openalex.org/C185544564","wikidata":"https://www.wikidata.org/wiki/Q81197","display_name":"Nuclear physics","level":1,"score":0.10908424854278564},{"id":"https://openalex.org/C191897082","wikidata":"https://www.wikidata.org/wiki/Q11467","display_name":"Metallurgy","level":1,"score":0.09759697318077087},{"id":"https://openalex.org/C47559259","wikidata":"https://www.wikidata.org/wiki/Q778143","display_name":"Biological dispersal","level":3,"score":0.0830627977848053},{"id":"https://openalex.org/C144024400","wikidata":"https://www.wikidata.org/wiki/Q21201","display_name":"Sociology","level":0,"score":0.0},{"id":"https://openalex.org/C149923435","wikidata":"https://www.wikidata.org/wiki/Q37732","display_name":"Demography","level":1,"score":0.0},{"id":"https://openalex.org/C2908647359","wikidata":"https://www.wikidata.org/wiki/Q2625603","display_name":"Population","level":2,"score":0.0}],"mesh":[{"descriptor_ui":"D002857","descriptor_name":"Chromium","qualifier_ui":"Q000032","qualifier_name":"analysis","is_major_topic":false},{"descriptor_ui":"D002859","descriptor_name":"Chromium Isotopes","qualifier_ui":"Q000032","qualifier_name":"analysis","is_major_topic":true},{"descriptor_ui":"D003718","descriptor_name":"Denmark","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D013030","descriptor_name":"Spain","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D013058","descriptor_name":"Mass Spectrometry","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D018534","descriptor_name":"Earth, Planet","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D019015","descriptor_name":"Geologic Sediments","qualifier_ui":"Q000737","qualifier_name":"chemistry","is_major_topic":true},{"descriptor_ui":"D019110","descriptor_name":"Meteoroids","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true}],"locations_count":4,"locations":[{"id":"doi:10.1126/science.282.5390.927","doi":"https://doi.org/10.1126/science.282.5390.927","is_oa":false,"landing_page_url":"https://doi.org/10.1126/science.282.5390.927","pdf_url":null,"source":{"id":"https://openalex.org/S3880285","display_name":"Science","issn_l":"0036-8075","issn":["0036-8075","0193-4511","1095-9203"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-class-a","anvur-scientific","cwts-core","dongbi-a","doyens","erih-plus","jufo-3","ki-jl-3","medline","norway-2","poland-200","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310315823","host_organization_name":"American Association for the Advancement of Science","host_organization_lineage":["https://openalex.org/P4310315823"],"host_organization_lineage_names":["American Association for the Advancement of Science"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Science","raw_type":"journal-article"},{"id":"pmid:9794759","doi":null,"is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/9794759","pdf_url":null,"source":{"id":"https://openalex.org/S4306525036","display_name":"PubMed","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I1299303238","host_organization_name":"National Institutes of Health","host_organization_lineage":["https://openalex.org/I1299303238"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Science (New York, N.Y.)","raw_type":"Journal Article"},{"id":"pmh:oai:edoc.mpg.de:373504","doi":null,"is_oa":false,"landing_page_url":"http://edoc.mpg.de/373504","pdf_url":null,"source":{"id":"https://openalex.org/S4406922265","display_name":"Max Planck Institute for Plasma Physics","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Science, v.282, 927-929 (1998)","raw_type":"Article"},{"id":"pmh:oai:pure.mpg.de:item_1832052","doi":null,"is_oa":false,"landing_page_url":"http://hdl.handle.net/11858/00-001M-0000-0014-988A-1","pdf_url":null,"source":{"id":"https://openalex.org/S4306400654","display_name":"MPG.PuRe (Max Planck Society)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I149899117","host_organization_name":"Max Planck Society","host_organization_lineage":["https://openalex.org/I149899117"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Science","raw_type":"info:eu-repo/semantics/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":22,"referenced_works":["https://openalex.org/W630393938","https://openalex.org/W1549408724","https://openalex.org/W1976899479","https://openalex.org/W1977208665","https://openalex.org/W1977457396","https://openalex.org/W1978790548","https://openalex.org/W1982572431","https://openalex.org/W1998208870","https://openalex.org/W2007790835","https://openalex.org/W2027301735","https://openalex.org/W2034428678","https://openalex.org/W2046368575","https://openalex.org/W2047390588","https://openalex.org/W2055994216","https://openalex.org/W2061370735","https://openalex.org/W2070065211","https://openalex.org/W2072810302","https://openalex.org/W2110619496","https://openalex.org/W2126767740","https://openalex.org/W2137926799","https://openalex.org/W2976423779","https://openalex.org/W4235022163"],"related_works":["https://openalex.org/W2006149748","https://openalex.org/W2026734659","https://openalex.org/W2994831711","https://openalex.org/W1500417822","https://openalex.org/W3015696013","https://openalex.org/W1966264023","https://openalex.org/W2621702874","https://openalex.org/W1652052175","https://openalex.org/W2032373765","https://openalex.org/W2022698202"],"abstract_inverted_index":{"High-precision":[0],"mass":[1],"spectrometric":[2],"analysis":[3],"of":[4,18,27,34,51,91],"chromium":[5,35,59,74],"in":[6,36,72],"sediment":[7],"samples":[8,39],"from":[9,40,49],"the":[10,16,24,28,73,89],"Cretaceous-Tertiary":[11],"(K-T)":[12],"boundary":[13,38],"coincident":[14],"with":[15,64,96],"extinction":[17],"numerous":[19],"organisms":[20],"on":[21],"Earth":[22,52,97],"confirms":[23],"cosmic":[25],"origin":[26],"K-T":[29,37],"phenomenon.":[30],"The":[31,58,69],"isotopic":[32,60,75],"composition":[33,76],"Stevns":[41],"Klint,":[42],"Denmark,":[43],"and":[44,53],"Caravaca,":[45],"Spain,":[46],"is":[47,62],"different":[48],"that":[50,93],"indicates":[54],"its":[55,99],"extraterrestrial":[56],"source.":[57],"signature":[61],"consistent":[63],"a":[65,84],"carbonaceous":[66],"chondrite-type":[67],"impactor.":[68],"observed":[70],"differences":[71],"among":[77],"various":[78],"meteorite":[79],"classes":[80],"can":[81],"serve":[82],"as":[83],"diagnostic":[85],"tool":[86],"for":[87],"deciphering":[88],"nature":[90],"impactors":[92],"have":[94],"collided":[95],"during":[98],"history.":[100]},"counts_by_year":[{"year":2026,"cited_by_count":3},{"year":2025,"cited_by_count":3},{"year":2024,"cited_by_count":6},{"year":2023,"cited_by_count":4},{"year":2022,"cited_by_count":4},{"year":2021,"cited_by_count":9},{"year":2020,"cited_by_count":2},{"year":2019,"cited_by_count":3},{"year":2018,"cited_by_count":5},{"year":2017,"cited_by_count":4},{"year":2016,"cited_by_count":7},{"year":2015,"cited_by_count":6},{"year":2014,"cited_by_count":5},{"year":2013,"cited_by_count":13},{"year":2012,"cited_by_count":4}],"updated_date":"2026-11-07T11:25:07.637180","created_date":"2016-06-24T00:00:00"}