{"id":"https://openalex.org/W2057091716","doi":"https://doi.org/10.1126/science.200.4345.1003","title":"Sm-Nd and Rb-Sr Chronology of Continental Crust Formation","display_name":"Sm-Nd and Rb-Sr Chronology of Continental Crust Formation","publication_year":1978,"publication_date":"1978-06-02","ids":{"openalex":"https://openalex.org/W2057091716","doi":"https://doi.org/10.1126/science.200.4345.1003","mag":"2057091716","pmid":"https://pubmed.ncbi.nlm.nih.gov/17740673"},"language":"en","primary_location":{"id":"doi:10.1126/science.200.4345.1003","doi":"https://doi.org/10.1126/science.200.4345.1003","is_oa":false,"landing_page_url":"https://doi.org/10.1126/science.200.4345.1003","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/A5006431613","display_name":"Malcolm T. McCulloch","orcid":"https://orcid.org/0000-0003-1538-1558","observed_orcids":["https://orcid.org/0000-0003-1538-1558"]},"institutions":[{"id":"https://openalex.org/I122411786","display_name":"California Institute of Technology","ror":"https://ror.org/05dxps055","country_code":"US","type":"education","lineage":["https://openalex.org/I122411786"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"M. T. McCulloch","raw_affiliation_strings":["Inmates of the Lunatic Asylum, Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena 91125"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Inmates of the Lunatic Asylum, Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena 91125","institution_ids":["https://openalex.org/I122411786"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5087692200","display_name":"Gerald J. Wasserburg","orcid":"https://orcid.org/0000-0002-7957-8029","observed_orcids":["https://orcid.org/0000-0002-7957-8029"]},"institutions":[{"id":"https://openalex.org/I122411786","display_name":"California Institute of Technology","ror":"https://ror.org/05dxps055","country_code":"US","type":"education","lineage":["https://openalex.org/I122411786"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"G. J. Wasserburg","raw_affiliation_strings":["Inmates of the Lunatic Asylum, Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena 91125"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Inmates of the Lunatic Asylum, Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena 91125","institution_ids":["https://openalex.org/I122411786"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I122411786"],"apc_list":null,"apc_paid":null,"fwci":23.6404,"has_fulltext":false,"cited_by_count":759,"citation_normalized_percentile":{"value":0.99869281,"is_in_top_1_percent":true,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":99,"max":100},"biblio":{"volume":"200","issue":"4345","first_page":"1003","last_page":"1011"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10001","display_name":"Geological and Geochemical Analysis","score":0.9976000189781189,"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/T10001","display_name":"Geological and Geochemical Analysis","score":0.9976000189781189,"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/T10325","display_name":"Astro and Planetary Science","score":0.0010999999940395355,"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/T11740","display_name":"Geochemistry and Elemental Analysis","score":0.0005000000237487257,"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/continental-crust-formation","display_name":"continental crust formation","score":0.9850000143051147},{"id":"https://openalex.org/keywords/sm-nd-isotopes","display_name":"Sm-Nd isotopes","score":0.8180000185966492},{"id":"https://openalex.org/keywords/rb-sr-isotopes","display_name":"Rb-Sr isotopes","score":0.9980000257492065},{"id":"https://openalex.org/keywords/canadian-shield","display_name":"Canadian Shield","score":0.699999988079071},{"id":"https://openalex.org/keywords/superior-craton","display_name":"Superior Province","score":0.8730000257492065},{"id":"https://openalex.org/keywords/slave-province","display_name":"Slave Province","score":0.9980000257492065},{"id":"https://openalex.org/keywords/churchill-province","display_name":"Churchill Province","score":0.9890000224113464},{"id":"https://openalex.org/keywords/sediment-provenance","display_name":"sediment provenance","score":0.7170000076293945},{"id":"https://openalex.org/keywords/crustal-evolution","display_name":"crustal evolution","score":0.5170000195503235}],"concepts":[{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.8220610618591309},{"id":"https://openalex.org/C141646446","wikidata":"https://www.wikidata.org/wiki/Q858571","display_name":"Continental crust","level":3,"score":0.8068841695785522},{"id":"https://openalex.org/C536819264","wikidata":"https://www.wikidata.org/wiki/Q1819","display_name":"Samarium","level":2,"score":0.7563015222549438},{"id":"https://openalex.org/C2776698055","wikidata":"https://www.wikidata.org/wiki/Q4232578","display_name":"Crust","level":2,"score":0.6438730955123901},{"id":"https://openalex.org/C130452526","wikidata":"https://www.wikidata.org/wiki/Q180621","display_name":"Diagenesis","level":2,"score":0.5910874009132385},{"id":"https://openalex.org/C518915863","wikidata":"https://www.wikidata.org/wiki/Q938","display_name":"Strontium","level":2,"score":0.581889271736145},{"id":"https://openalex.org/C17409809","wikidata":"https://www.wikidata.org/wiki/Q161764","display_name":"Geochemistry","level":1,"score":0.5764597654342651},{"id":"https://openalex.org/C540262125","wikidata":"https://www.wikidata.org/wiki/Q1388","display_name":"Neodymium","level":3,"score":0.5671131610870361},{"id":"https://openalex.org/C6494504","wikidata":"https://www.wikidata.org/wiki/Q82480","display_name":"Sedimentary rock","level":2,"score":0.5484318733215332},{"id":"https://openalex.org/C2780356177","wikidata":"https://www.wikidata.org/wiki/Q580133","display_name":"Baltic Shield","level":3,"score":0.5079413056373596},{"id":"https://openalex.org/C181536285","wikidata":"https://www.wikidata.org/wiki/Q130788","display_name":"Chronology","level":2,"score":0.4933258593082428},{"id":"https://openalex.org/C137581210","wikidata":"https://www.wikidata.org/wiki/Q1325627","display_name":"Isotopes of strontium","level":3,"score":0.4287203252315521},{"id":"https://openalex.org/C150999391","wikidata":"https://www.wikidata.org/wiki/Q509037","display_name":"Terrane","level":3,"score":0.4155736565589905},{"id":"https://openalex.org/C151730666","wikidata":"https://www.wikidata.org/wiki/Q7205","display_name":"Paleontology","level":1,"score":0.27165836095809937},{"id":"https://openalex.org/C77928131","wikidata":"https://www.wikidata.org/wiki/Q193343","display_name":"Tectonics","level":2,"score":0.1784312129020691},{"id":"https://openalex.org/C185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","level":0,"score":0.06800597906112671},{"id":"https://openalex.org/C120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","level":1,"score":0.0},{"id":"https://openalex.org/C520434653","wikidata":"https://www.wikidata.org/wiki/Q38867","display_name":"Laser","level":2,"score":0.0},{"id":"https://openalex.org/C179104552","wikidata":"https://www.wikidata.org/wiki/Q11165","display_name":"Inorganic chemistry","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/C178790620","wikidata":"https://www.wikidata.org/wiki/Q11351","display_name":"Organic chemistry","level":1,"score":0.0}],"mesh":[],"locations_count":3,"locations":[{"id":"doi:10.1126/science.200.4345.1003","doi":"https://doi.org/10.1126/science.200.4345.1003","is_oa":false,"landing_page_url":"https://doi.org/10.1126/science.200.4345.1003","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:17740673","doi":null,"is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/17740673","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:authors.library.caltech.edu:42314","doi":null,"is_oa":false,"landing_page_url":"https://authors.library.caltech.edu/42314/","pdf_url":null,"source":{"id":"https://openalex.org/S4306402161","display_name":"CaltechAUTHORS (California Institute of Technology)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I122411786","host_organization_name":"California Institute of Technology","host_organization_lineage":["https://openalex.org/I122411786"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"Article"}],"best_oa_location":null,"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":85,"referenced_works":["https://openalex.org/W578823586","https://openalex.org/W646118581","https://openalex.org/W1610145251","https://openalex.org/W1966722927","https://openalex.org/W1968666287","https://openalex.org/W1970108402","https://openalex.org/W1970381806","https://openalex.org/W1973127704","https://openalex.org/W1973432702","https://openalex.org/W1973460828","https://openalex.org/W1973752938","https://openalex.org/W1979590983","https://openalex.org/W1982638607","https://openalex.org/W1985194503","https://openalex.org/W1986548895","https://openalex.org/W1988386541","https://openalex.org/W1990719119","https://openalex.org/W1991728395","https://openalex.org/W1993150912","https://openalex.org/W1998105210","https://openalex.org/W1998370907","https://openalex.org/W2002843018","https://openalex.org/W2004418855","https://openalex.org/W2005925062","https://openalex.org/W2010477761","https://openalex.org/W2011636272","https://openalex.org/W2011688388","https://openalex.org/W2011763496","https://openalex.org/W2014298308","https://openalex.org/W2018428681","https://openalex.org/W2018782159","https://openalex.org/W2020661715","https://openalex.org/W2023788781","https://openalex.org/W2024094818","https://openalex.org/W2025980796","https://openalex.org/W2026060905","https://openalex.org/W2028373775","https://openalex.org/W2029486428","https://openalex.org/W2029599884","https://openalex.org/W2029763967","https://openalex.org/W2031220122","https://openalex.org/W2031312028","https://openalex.org/W2032696966","https://openalex.org/W2033962701","https://openalex.org/W2034203033","https://openalex.org/W2034457640","https://openalex.org/W2036333253","https://openalex.org/W2037230786","https://openalex.org/W2038380794","https://openalex.org/W2043226034","https://openalex.org/W2044933256","https://openalex.org/W2047040143","https://openalex.org/W2047275286","https://openalex.org/W2048225026","https://openalex.org/W2048951312","https://openalex.org/W2051919739","https://openalex.org/W2052991552","https://openalex.org/W2058312784","https://openalex.org/W2059542265","https://openalex.org/W2060311516","https://openalex.org/W2061210265","https://openalex.org/W2063014727","https://openalex.org/W2063186230","https://openalex.org/W2065056058","https://openalex.org/W2068527782","https://openalex.org/W2073426602","https://openalex.org/W2073746611","https://openalex.org/W2074537369","https://openalex.org/W2074640944","https://openalex.org/W2076651014","https://openalex.org/W2082269060","https://openalex.org/W2085604459","https://openalex.org/W2086660647","https://openalex.org/W2088260923","https://openalex.org/W2092607185","https://openalex.org/W2093072679","https://openalex.org/W2095320098","https://openalex.org/W2109368605","https://openalex.org/W2121429788","https://openalex.org/W2123404559","https://openalex.org/W2124515580","https://openalex.org/W2147137890","https://openalex.org/W2156964216","https://openalex.org/W4285719527","https://openalex.org/W4390721169"],"related_works":["https://openalex.org/W2170551182","https://openalex.org/W2095534426","https://openalex.org/W147213392","https://openalex.org/W6902743725","https://openalex.org/W2047364329","https://openalex.org/W1549425049","https://openalex.org/W2056400369","https://openalex.org/W1983596468","https://openalex.org/W2079248021","https://openalex.org/W2001218580"],"abstract_inverted_index":{"Samarium-neodymium":[0],"and":[1,45],"rubidium-strontium":[2],"isotopic":[3,84],"systematics":[4],"together":[5],"with":[6],"plausible":[7],"assumptions":[8],"regarding":[9],"the":[10,22,36,42,57,69,82],"geochemical":[11],"evlution":[12],"of":[13,27,33,41,72,77],"continental":[14,28],"crust":[15,29],"material,":[16],"have":[17],"been":[18,65],"used":[19],"to":[20,60,67],"ascertain":[21],"times":[23],"at":[24],"which":[25],"segments":[26],"were":[30,53],"formed.":[31],"Analyses":[32],"composites":[34],"from":[35],"Canadian":[37],"Shield":[38],"representing":[39],"portions":[40],"Superior,":[43],"Slave,":[44],"Churchill":[46],"structural":[47],"provinces":[48,52],"indicate":[49],"that":[50,81],"these":[51],"all":[54],"formed":[55],"within":[56],"period":[58],"2.5":[59],"2.7":[61],"aeons.":[62],"It":[63],"has":[64],"possible":[66],"determine":[68],"mean":[70],"age":[71],"sediment":[73],"provenances,":[74],"as":[75],"studies":[76],"sedimentary":[78],"rocks":[79],"suggest":[80],"samarium-neodymium":[83],"system":[85],"is":[86],"not":[87],"substantially":[88],"disturbed":[89],"during":[90],"sedimentation":[91],"or":[92],"diagenesis.":[93]},"counts_by_year":[{"year":2026,"cited_by_count":11},{"year":2025,"cited_by_count":8},{"year":2024,"cited_by_count":14},{"year":2023,"cited_by_count":24},{"year":2022,"cited_by_count":24},{"year":2021,"cited_by_count":26},{"year":2020,"cited_by_count":13},{"year":2019,"cited_by_count":15},{"year":2018,"cited_by_count":14},{"year":2017,"cited_by_count":13},{"year":2016,"cited_by_count":11},{"year":2015,"cited_by_count":13},{"year":2014,"cited_by_count":18},{"year":2013,"cited_by_count":22},{"year":2012,"cited_by_count":8}],"updated_date":"2026-11-07T11:25:07.637180","created_date":"2016-06-24T00:00:00"}
