{"id":"https://openalex.org/W7224091600","doi":"https://doi.org/10.2138/am-2026-10374","title":"Compositional control on etching and retention of fission tracks in monazite","display_name":"Compositional control on etching and retention of fission tracks in monazite","publication_year":2026,"publication_date":"2026-10-28","ids":{"openalex":"https://openalex.org/W7224091600","doi":"https://doi.org/10.2138/am-2026-10374"},"language":"en","primary_location":{"id":"doi:10.2138/am-2026-10374","doi":"https://doi.org/10.2138/am-2026-10374","is_oa":false,"landing_page_url":"https://doi.org/10.2138/am-2026-10374","pdf_url":null,"source":{"id":"https://openalex.org/S80733542","display_name":"American Mineralogist","issn_l":"0003-004X","issn":["0003-004X","1945-3027"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","dongbi-b","jufo-1","norway-1","poland-100","russia-white-list-1"],"host_organization":"https://openalex.org/P4310319932","host_organization_name":"Mineralogical Society of America","host_organization_lineage":["https://openalex.org/P4310319932"],"host_organization_lineage_names":["Mineralogical Society of America"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"American Mineralogist","raw_type":"journal-article"},"volume":null,"type":"article","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/A5075672569","display_name":"Etienne Skrzypek","orcid":"https://orcid.org/0000-0001-6871-362X","observed_orcids":["https://orcid.org/0000-0001-6871-362X"]},"institutions":[{"id":"https://openalex.org/I15766117","display_name":"University of Graz","ror":"https://ror.org/01faaaf77","country_code":"AT","type":"education","lineage":["https://openalex.org/I15766117"]},{"id":"https://openalex.org/I4210108044","display_name":"Nawi Graz","ror":"https://ror.org/01mm16571","country_code":"AT","type":"education","lineage":["https://openalex.org/I4210108044"]}],"countries":["AT"],"is_corresponding":true,"raw_author_name":"Etienne Skrzypek","raw_affiliation_strings":["Department of Petrology and Geochemistry, NAWI Graz Geocenter, University of Graz, Universit\u00e4tsplatz 2, 8010 Graz, Austria"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Petrology and Geochemistry, NAWI Graz Geocenter, University of Graz, Universit\u00e4tsplatz 2, 8010 Graz, Austria","institution_ids":["https://openalex.org/I15766117","https://openalex.org/I4210108044"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5050753277","display_name":"Sean Jones","orcid":"https://orcid.org/0000-0003-4569-7297","observed_orcids":["https://orcid.org/0000-0003-4569-7297"]},"institutions":[{"id":"https://openalex.org/I165779595","display_name":"The University of Melbourne","ror":"https://ror.org/01ej9dk98","country_code":"AU","type":"education","lineage":["https://openalex.org/I165779595"]}],"countries":["AU"],"is_corresponding":false,"raw_author_name":"Sean Jones","raw_affiliation_strings":["School of Geography, Earth and Atmospheric Sciences, The University of Melbourne, Melbourne, Victoria 3010, Australia"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"School of Geography, Earth and Atmospheric Sciences, The University of Melbourne, Melbourne, Victoria 3010, Australia","institution_ids":["https://openalex.org/I165779595"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5090578995","display_name":"Barry P. Kohn","orcid":"https://orcid.org/0000-0001-5064-5454","observed_orcids":["https://orcid.org/0000-0001-5064-5454"]},"institutions":[{"id":"https://openalex.org/I165779595","display_name":"The University of Melbourne","ror":"https://ror.org/01ej9dk98","country_code":"AU","type":"education","lineage":["https://openalex.org/I165779595"]}],"countries":["AU"],"is_corresponding":false,"raw_author_name":"Barry Kohn","raw_affiliation_strings":["School of Geography, Earth and Atmospheric Sciences, The University of Melbourne, Melbourne, Victoria 3010, Australia"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"School of Geography, Earth and Atmospheric Sciences, The University of Melbourne, Melbourne, Victoria 3010, Australia","institution_ids":["https://openalex.org/I165779595"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5078466540","display_name":"Ling Chung","orcid":"https://orcid.org/0000-0002-2046-1184","observed_orcids":["https://orcid.org/0000-0002-2046-1184"]},"institutions":[{"id":"https://openalex.org/I165779595","display_name":"The University of Melbourne","ror":"https://ror.org/01ej9dk98","country_code":"AU","type":"education","lineage":["https://openalex.org/I165779595"]}],"countries":["AU"],"is_corresponding":false,"raw_author_name":"Ling Chung","raw_affiliation_strings":["School of Geography, Earth and Atmospheric Sciences, The University of Melbourne, Melbourne, Victoria 3010, Australia"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"School of Geography, Earth and Atmospheric Sciences, The University of Melbourne, Melbourne, Victoria 3010, Australia","institution_ids":["https://openalex.org/I165779595"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5070900574","display_name":"Malcolm McMillan","orcid":"https://orcid.org/0000-0002-5113-0177","observed_orcids":["https://orcid.org/0000-0002-5113-0177"]},"institutions":[{"id":"https://openalex.org/I165779595","display_name":"The University of Melbourne","ror":"https://ror.org/01ej9dk98","country_code":"AU","type":"education","lineage":["https://openalex.org/I165779595"]}],"countries":["AU"],"is_corresponding":false,"raw_author_name":"Malcolm McMillan","raw_affiliation_strings":["School of Geography, Earth and Atmospheric Sciences, The University of Melbourne, Melbourne, Victoria 3010, Australia"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"School of Geography, Earth and Atmospheric Sciences, The University of Melbourne, Melbourne, Victoria 3010, Australia","institution_ids":["https://openalex.org/I165779595"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5016641627","display_name":"Andrew Gleadow","orcid":"https://orcid.org/0000-0003-0496-0028","observed_orcids":["https://orcid.org/0000-0003-0496-0028"]},"institutions":[{"id":"https://openalex.org/I165779595","display_name":"The University of Melbourne","ror":"https://ror.org/01ej9dk98","country_code":"AU","type":"education","lineage":["https://openalex.org/I165779595"]}],"countries":["AU"],"is_corresponding":false,"raw_author_name":"Andrew Gleadow","raw_affiliation_strings":["School of Geography, Earth and Atmospheric Sciences, The University of Melbourne, Melbourne, Victoria 3010, Australia"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"School of Geography, Earth and Atmospheric Sciences, The University of Melbourne, Melbourne, Victoria 3010, Australia","institution_ids":["https://openalex.org/I165779595"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5050225573","display_name":"Christoph Anton Hauzenberger","orcid":"https://orcid.org/0000-0002-9972-1320","observed_orcids":["https://orcid.org/0000-0002-9972-1320"]},"institutions":[{"id":"https://openalex.org/I15766117","display_name":"University of Graz","ror":"https://ror.org/01faaaf77","country_code":"AT","type":"education","lineage":["https://openalex.org/I15766117"]},{"id":"https://openalex.org/I4210108044","display_name":"Nawi Graz","ror":"https://ror.org/01mm16571","country_code":"AT","type":"education","lineage":["https://openalex.org/I4210108044"]}],"countries":["AT"],"is_corresponding":false,"raw_author_name":"Christoph Hauzenberger","raw_affiliation_strings":["Department of Petrology and Geochemistry, NAWI Graz Geocenter, University of Graz, Universit\u00e4tsplatz 2, 8010 Graz, Austria"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Petrology and Geochemistry, NAWI Graz Geocenter, University of Graz, Universit\u00e4tsplatz 2, 8010 Graz, Austria","institution_ids":["https://openalex.org/I15766117","https://openalex.org/I4210108044"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5008632494","display_name":"G.W.A.R. Fernando","orcid":"https://orcid.org/0000-0001-5299-3161","observed_orcids":["https://orcid.org/0000-0001-5299-3161"]},"institutions":[{"id":"https://openalex.org/I181714291","display_name":"Open University of Sri Lanka","ror":"https://ror.org/011rrqf91","country_code":"LK","type":"education","lineage":["https://openalex.org/I181714291"]}],"countries":["LK"],"is_corresponding":false,"raw_author_name":"G.W.A.R. Fernando","raw_affiliation_strings":["Department of Physics, Faculty of Natural Sciences, The Open University of Sri Lanka in Nugegoda, PO Box 21, Sri Lanka"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Physics, Faculty of Natural Sciences, The Open University of Sri Lanka in Nugegoda, PO Box 21, Sri Lanka","institution_ids":["https://openalex.org/I181714291"]}]}],"institutions":[],"countries_distinct_count":3,"institutions_distinct_count":4,"corresponding_author_ids":["https://openalex.org/A5075672569"],"corresponding_institution_ids":["https://openalex.org/I15766117","https://openalex.org/I4210108044"],"apc_list":{"value":100,"currency":"USD","value_usd":100},"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.81507956,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"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/T10001","display_name":"Geological and Geochemical Analysis","score":0.9937000274658203,"subfield":{"id":"https://openalex.org/subfields/1908","display_name":"Geophysics"},"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":0.9937000274658203,"subfield":{"id":"https://openalex.org/subfields/1908","display_name":"Geophysics"},"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/T12506","display_name":"Nuclear materials and radiation effects","score":0.0027000000700354576,"subfield":{"id":"https://openalex.org/subfields/2505","display_name":"Materials Chemistry"},"field":{"id":"https://openalex.org/fields/25","display_name":"Materials Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10325","display_name":"Astro and Planetary Science","score":0.000699999975040555,"subfield":{"id":"https://openalex.org/subfields/3103","display_name":"Astronomy and Astrophysics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/monazite","display_name":"monazite","score":0.8489999771118164},{"id":"https://openalex.org/keywords/fission-tracks","display_name":"fission tracks","score":0.7820000052452087},{"id":"https://openalex.org/keywords/spontaneous-fission","display_name":"spontaneous fission","score":0.7210000157356262},{"id":"https://openalex.org/keywords/thermochronology","display_name":"thermochronology","score":0.8640000224113464},{"id":"https://openalex.org/keywords/etching-time","display_name":"etching time","score":0.7229999899864197},{"id":"https://openalex.org/keywords/track-density","display_name":"track density","score":0.47200000286102295},{"id":"https://openalex.org/keywords/radiation-damage","display_name":"radiation damage","score":0.6700000166893005},{"id":"https://openalex.org/keywords/u-pb-dating","display_name":"U-Pb geochronology","score":0.7799999713897705},{"id":"https://openalex.org/keywords/sampling-bias","display_name":"sampling bias","score":0.6679999828338623},{"id":"https://openalex.org/keywords/heavy-mineral-sands","display_name":"heavy mineral sands","score":0.5559999942779541},{"id":"https://openalex.org/keywords/beach-placers","display_name":"beach placers","score":0.7639999985694885}],"concepts":[{"id":"https://openalex.org/C2776212575","wikidata":"https://www.wikidata.org/wiki/Q422011","display_name":"Monazite","level":3,"score":0.9692999720573425},{"id":"https://openalex.org/C92217149","wikidata":"https://www.wikidata.org/wiki/Q1420956","display_name":"Fission track dating","level":3,"score":0.7534999847412109},{"id":"https://openalex.org/C100460472","wikidata":"https://www.wikidata.org/wiki/Q2368605","display_name":"Etching (microfabrication)","level":3,"score":0.6934000253677368},{"id":"https://openalex.org/C195963834","wikidata":"https://www.wikidata.org/wiki/Q3661541","display_name":"Thermochronology","level":3,"score":0.6661999821662903},{"id":"https://openalex.org/C138411078","wikidata":"https://www.wikidata.org/wiki/Q911272","display_name":"Electron microprobe","level":2,"score":0.6061000227928162},{"id":"https://openalex.org/C43592290","wikidata":"https://www.wikidata.org/wiki/Q12148490","display_name":"Placer mining","level":2,"score":0.5564000010490417},{"id":"https://openalex.org/C199289684","wikidata":"https://www.wikidata.org/wiki/Q83353","display_name":"Mineralogy","level":1,"score":0.5},{"id":"https://openalex.org/C113196181","wikidata":"https://www.wikidata.org/wiki/Q485223","display_name":"Analytical Chemistry (journal)","level":2,"score":0.46309998631477356},{"id":"https://openalex.org/C2776432453","wikidata":"https://www.wikidata.org/wiki/Q7946","display_name":"Mineral","level":2,"score":0.42800000309944153},{"id":"https://openalex.org/C33220542","wikidata":"https://www.wikidata.org/wiki/Q6086567","display_name":"Isotropic etching","level":4,"score":0.4154999852180481},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.4097999930381775},{"id":"https://openalex.org/C192562407","wikidata":"https://www.wikidata.org/wiki/Q228736","display_name":"Materials science","level":0,"score":0.39089998602867126},{"id":"https://openalex.org/C12294094","wikidata":"https://www.wikidata.org/wiki/Q929080","display_name":"Fission","level":3,"score":0.37139999866485596},{"id":"https://openalex.org/C26771246","wikidata":"https://www.wikidata.org/wiki/Q321095","display_name":"Scanning electron microscope","level":2,"score":0.3580000102519989},{"id":"https://openalex.org/C177322064","wikidata":"https://www.wikidata.org/wiki/Q750955","display_name":"Radiochemistry","level":1,"score":0.3431999981403351},{"id":"https://openalex.org/C77017923","wikidata":"https://www.wikidata.org/wiki/Q912313","display_name":"Optical microscope","level":3,"score":0.3352000117301941},{"id":"https://openalex.org/C135788738","wikidata":"https://www.wikidata.org/wiki/Q19577","display_name":"Actinide","level":2,"score":0.33489999175071716},{"id":"https://openalex.org/C204323151","wikidata":"https://www.wikidata.org/wiki/Q905424","display_name":"Range (aeronautics)","level":2,"score":0.32839998602867126},{"id":"https://openalex.org/C111337013","wikidata":"https://www.wikidata.org/wiki/Q2737837","display_name":"Irradiation","level":2,"score":0.28540000319480896},{"id":"https://openalex.org/C93877712","wikidata":"https://www.wikidata.org/wiki/Q132560","display_name":"Electron microscope","level":2,"score":0.2791999876499176},{"id":"https://openalex.org/C170187044","wikidata":"https://www.wikidata.org/wiki/Q214753","display_name":"Radiometric dating","level":2,"score":0.2667999863624573},{"id":"https://openalex.org/C555451288","wikidata":"https://www.wikidata.org/wiki/Q1098","display_name":"Uranium","level":2,"score":0.26460000872612},{"id":"https://openalex.org/C185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","level":0,"score":0.26420000195503235},{"id":"https://openalex.org/C192191005","wikidata":"https://www.wikidata.org/wiki/Q466491","display_name":"Grain size","level":2,"score":0.26409998536109924},{"id":"https://openalex.org/C180785854","wikidata":"https://www.wikidata.org/wiki/Q2404917","display_name":"Closure temperature","level":3,"score":0.2637999951839447},{"id":"https://openalex.org/C2776631189","wikidata":"https://www.wikidata.org/wiki/Q1128169","display_name":"Metallography","level":3,"score":0.263700008392334},{"id":"https://openalex.org/C149849071","wikidata":"https://www.wikidata.org/wiki/Q1263816","display_name":"Chemical composition","level":2,"score":0.2619999945163727},{"id":"https://openalex.org/C24547453","wikidata":"https://www.wikidata.org/wiki/Q332423","display_name":"Absolute dating","level":3,"score":0.2524999976158142},{"id":"https://openalex.org/C153385146","wikidata":"https://www.wikidata.org/wiki/Q18335","display_name":"Radiation","level":2,"score":0.25189998745918274},{"id":"https://openalex.org/C2781147490","wikidata":"https://www.wikidata.org/wiki/Q5156808","display_name":"Compositional data","level":2,"score":0.2515999972820282}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.2138/am-2026-10374","doi":"https://doi.org/10.2138/am-2026-10374","is_oa":false,"landing_page_url":"https://doi.org/10.2138/am-2026-10374","pdf_url":null,"source":{"id":"https://openalex.org/S80733542","display_name":"American Mineralogist","issn_l":"0003-004X","issn":["0003-004X","1945-3027"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","dongbi-b","jufo-1","norway-1","poland-100","russia-white-list-1"],"host_organization":"https://openalex.org/P4310319932","host_organization_name":"Mineralogical Society of America","host_organization_lineage":["https://openalex.org/P4310319932"],"host_organization_lineage_names":["Mineralogical Society of America"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"American Mineralogist","raw_type":"journal-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":0,"referenced_works":[],"related_works":["https://openalex.org/W4400301370","https://openalex.org/W4312954824","https://openalex.org/W2998036311","https://openalex.org/W7198370547","https://openalex.org/W4238594335","https://openalex.org/W3028685160","https://openalex.org/W7218247815","https://openalex.org/W6943891740","https://openalex.org/W2276751223","https://openalex.org/W1964213903"],"abstract_inverted_index":{"Abstract":[0],"The":[1,112,204],"application":[2],"of":[3,21,100,119,136,206,230,239,287,341,392,401,436],"spontaneous":[4],"fission":[5],"tracks":[6],"in":[7,12,79,268,309,389,440],"monazite":[8,46,320,349,416],"for":[9,71,290,347],"thermochronology":[10],"is":[11,36,39,103,123,147,194,209,224,278,375,417,423],"its":[13,404],"infancy.":[14],"Monazite":[15],"may":[16,302],"display":[17],"a":[18,49,55,80,165,186,282,399,425,437],"wide":[19],"range":[20,332,361],"chemical":[22],"compositions,":[23],"therefore":[24],"constraints":[25,402],"on":[26,30,369,403],"the":[27,98,120,134,150,228,236,376,390,393,420,430,441],"compositional":[28],"control":[29],"etching":[31,189],"and":[32,76,97,108,115,139,159,181,254,258,296,314,325,357,383,397],"fission-track":[33],"(FT)":[34],"retention":[35,410],"critical":[37],"but":[38,272],"currently":[40],"lacking.":[41],"To":[42],"address":[43],"this":[44],"need,":[45],"grains":[47,321],"from":[48,54,235,243,333],"heavy":[50,394],"mineral":[51,395],"sand":[52,396],"collected":[53],"beach":[56],"placer":[57],"(Pulmoddai,":[58],"NE":[59],"Sri":[60],"Lanka)":[61],"are":[62,130,178,199,293],"used":[63,131],"to":[64,132,149,153,169,214,226,265,281,305,335,345,367,387,432],"prepare":[65],"three":[66],"separate":[67],"mounts,":[68],"each":[69],"etched":[70],"different":[72,244,359],"durations":[73],"(15,":[74],"30":[75],"60":[77,202],"minutes)":[78],"HCl:H2O":[81],"solution":[82],"at":[83],"90":[84],"\u00b0C.":[85],"For":[86],"domains":[87,122,173,198,248],"with":[88,174,220,249,411],"relatively":[89,187,297],"well-etched":[90,200],"tracks,":[91],"FT":[92,101,160,176,207,251,269,291,330,342,381],"density,":[93,252],"confined":[94,274],"track":[95,256,275,409],"length":[96,276],"size":[99,205],"openings":[102,208,257],"quantified":[104,121,184],"using":[105,354],"both":[106],"optical":[107],"electron":[109],"microscope":[110],"images.":[111],"full":[113,405],"composition":[114,158],"Th\u2013U\u2013total":[116,312],"Pb":[117,313],"age":[118],"determined":[124],"by":[125],"EPMA":[126,355],"while":[127,328],"LA-ICP-MS":[128],"analyses":[129],"evaluate":[133],"accuracy":[135],"U":[137,310],"concentrations":[138],"obtain":[140],"additional":[141],"U-Pb":[142,315],"dates.":[143],"Principal":[144],"component":[145],"analysis":[146],"applied":[148],"entire":[151],"dataset":[152],"identify":[154],"potential":[155,431],"correlations":[156],"between":[157,323,380],"properties.":[161],"Etching":[162],"duration":[163,190],"introduces":[164],"sampling":[166],"bias":[167,284],"related":[168],"actinide":[170],"content.":[171,371,414],"Th\u2013U-rich":[172],"high":[175],"densities":[177,350],"quickly":[179],"over-etched":[180],"cannot":[182],"be":[183,303],"if":[185],"long":[188],"(>":[191],"15":[192],"min)":[193],"adopted,":[195],"whereas":[196],"Th\u2013U-poorer":[197],"after":[201],"min.":[203],"moderately":[210],"(15":[211],"min":[212,217],"etching)":[213,218],"strongly":[215,294],"(60":[216],"correlated":[219],"Th":[221],"content,":[222,385],"which":[223,365],"thought":[225],"reflect":[227],"role":[229],"radiation":[231],"damage":[232,261],"mainly":[233],"resulting":[234],"alpha":[237],"decay":[238],"Th.":[240],"Quantitative":[241],"results":[242],"analysts":[245],"show":[246],"that":[247,273,318,424],"low":[250,442],"large":[253],"variable":[255,348],"significant":[259],"surface":[260],"can":[262],"yield":[263],"up":[264],"\u00b150%":[266],"difference":[267],"density":[270],"values,":[271],"measurement":[277],"not":[279],"subject":[280],"strong":[283],"(\u223c5%).":[285],"Regions":[286],"interest":[288],"defined":[289],"counting":[292],"analyst-dependent":[295],"small":[298],"areas":[299],"(\u223c1\u00d7104":[300],"\u03bcm2)":[301],"preferable":[304],"avoid":[306],"abrupt":[307],"changes":[308],"concentration.":[311],"dates":[316,331,343],"reveal":[317],"most":[319],"formed":[322],"570":[324],"480":[326],"Ma":[327],"individual":[329],"7.31":[334],"0.27":[336],"Ma.":[337],"An":[338,372],"accurate":[339],"calculation":[340],"needs":[344],"account":[346],"(5.0\u20135.3":[351],"g.cm\u22123,":[352],"calculated":[353],"analyses)":[356],"potentially":[358],"etchable":[360],"values":[362],"(9.3\u201313":[363],"\u03bcm),":[364],"appear":[366],"depend":[368],"Si":[370,384,413],"important":[373],"finding":[374],"strong,":[377],"positive":[378],"correlation":[379],"date":[382],"interpreted":[386],"reflect,":[388],"case":[391],"despite":[398],"lack":[400],"thermal":[406],"history,":[407],"increased":[408],"greater":[412],"Because":[415],"commonly":[418],"zoned,":[419],"main":[421],"implication":[422],"single":[426],"grain":[427],"might":[428],"have":[429],"record":[433],"several":[434],"stages":[435],"thermochronological":[438],"history":[439],"(<":[443],"50":[444],"\u00b0C)":[445],"temperature":[446],"range.":[447]},"counts_by_year":[],"updated_date":"2026-10-30T12:39:25.321706","created_date":"2026-10-29T00:00:00"}