{"id":"https://openalex.org/W2010280901","doi":"https://doi.org/10.1086/629839","title":"New Pb-Pb Single Zircon Age Constraints on the Timing of Neoproterozoic Glaciation and Continental Break-up in Namibia","display_name":"New Pb-Pb Single Zircon Age Constraints on the Timing of Neoproterozoic Glaciation and Continental Break-up in Namibia","publication_year":1996,"publication_date":"1996-07-01","ids":{"openalex":"https://openalex.org/W2010280901","doi":"https://doi.org/10.1086/629839","mag":"2010280901"},"language":"en","primary_location":{"id":"doi:10.1086/629839","doi":"https://doi.org/10.1086/629839","is_oa":false,"landing_page_url":"https://doi.org/10.1086/629839","pdf_url":null,"source":{"id":"https://openalex.org/S99859448","display_name":"The Journal of Geology","issn_l":"0022-1376","issn":["0022-1376","1537-5269"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","jufo-1","norway-1","poland-100","russia-white-list-1"],"host_organization":"https://openalex.org/P4310315672","host_organization_name":"University of Chicago Press","host_organization_lineage":["https://openalex.org/P4310315672","https://openalex.org/P4310315690"],"host_organization_lineage_names":["University of Chicago Press","University of Chicago"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"The Journal of Geology","raw_type":"journal-article"},"volume":null,"type":"article","is_traditional":true,"indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"http://hdl.handle.net/11427/21027","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5087827547","display_name":"Hartwig Ernest Frimmel","orcid":"https://orcid.org/0000-0003-3041-8208","observed_orcids":["https://orcid.org/0000-0003-3041-8208"]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Hartwig E. Frimmel","raw_affiliation_strings":[""],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"","institution_ids":[]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5110514253","display_name":"Urs Kl\u00f6tzli","orcid":"https://orcid.org/0000-0003-2743-0281","observed_orcids":["https://orcid.org/0000-0003-2743-0281"]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Urs S. Kl\u00f6tzli","raw_affiliation_strings":[""],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"","institution_ids":[]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5013933429","display_name":"Pete R. Siegfried","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Pete R. Siegfried","raw_affiliation_strings":[""],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"","institution_ids":[]}]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":0,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":1.3142,"has_fulltext":false,"cited_by_count":186,"citation_normalized_percentile":{"value":0.75953206,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":99},"biblio":{"volume":"104","issue":"4","first_page":"459","last_page":"469"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10001","display_name":"Geological and Geochemical Analysis","score":0.9990000128746033,"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":0.9990000128746033,"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/T10109","display_name":"Paleontology and Stratigraphy of Fossils","score":0.0005000000237487257,"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/T13177","display_name":"Geological and Geophysical Studies","score":0.0003000000142492354,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/neoproterozoic-glaciation","display_name":"Neoproterozoic glaciation","score":0.9580000042915344},{"id":"https://openalex.org/keywords/sturtian-glaciation","display_name":"Sturtian glaciation","score":0.9509999752044678},{"id":"https://openalex.org/keywords/continental-rifting","display_name":"continental rifting","score":0.7369999885559082},{"id":"https://openalex.org/keywords/continental-breakup","display_name":"continental breakup","score":0.7310000061988831},{"id":"https://openalex.org/keywords/zircon-u-pb-geochronology","display_name":"zircon U-Pb geochronology","score":0.8330000042915344},{"id":"https://openalex.org/keywords/gariep-belt","display_name":"Gariep Belt","score":0.9929999709129333},{"id":"https://openalex.org/keywords/damara-belt","display_name":"Damara Belt","score":0.9160000085830688},{"id":"https://openalex.org/keywords/diamictite","display_name":"diamictite","score":0.7440000176429749},{"id":"https://openalex.org/keywords/glacial-deposits","display_name":"glacial deposits","score":0.7310000061988831},{"id":"https://openalex.org/keywords/rhyolitic-volcanism","display_name":"rhyolitic volcanism","score":0.6869999766349792},{"id":"https://openalex.org/keywords/namibia","display_name":"Namibia","score":0.6790000200271606}],"concepts":[{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.9300334453582764},{"id":"https://openalex.org/C50682988","wikidata":"https://www.wikidata.org/wiki/Q473935","display_name":"Rift","level":3,"score":0.7405195832252502},{"id":"https://openalex.org/C2778849375","wikidata":"https://www.wikidata.org/wiki/Q178928","display_name":"Zircon","level":2,"score":0.7342032790184021},{"id":"https://openalex.org/C2778648423","wikidata":"https://www.wikidata.org/wiki/Q840899","display_name":"Diamictite","level":4,"score":0.5880738496780396},{"id":"https://openalex.org/C192241223","wikidata":"https://www.wikidata.org/wiki/Q108689","display_name":"Volcanic rock","level":3,"score":0.585748553276062},{"id":"https://openalex.org/C15739521","wikidata":"https://www.wikidata.org/wiki/Q602963","display_name":"Glacial period","level":2,"score":0.5493195652961731},{"id":"https://openalex.org/C2779241739","wikidata":"https://www.wikidata.org/wiki/Q185161","display_name":"Rodinia","level":4,"score":0.5465644598007202},{"id":"https://openalex.org/C151730666","wikidata":"https://www.wikidata.org/wiki/Q7205","display_name":"Paleontology","level":1,"score":0.5446027517318726},{"id":"https://openalex.org/C17409809","wikidata":"https://www.wikidata.org/wiki/Q161764","display_name":"Geochemistry","level":1,"score":0.5153681635856628},{"id":"https://openalex.org/C202746551","wikidata":"https://www.wikidata.org/wiki/Q213891","display_name":"Geochronology","level":2,"score":0.502485990524292},{"id":"https://openalex.org/C120806208","wikidata":"https://www.wikidata.org/wiki/Q8072","display_name":"Volcano","level":2,"score":0.44978415966033936},{"id":"https://openalex.org/C487381","wikidata":"https://www.wikidata.org/wiki/Q17098413","display_name":"Isochron","level":2,"score":0.43161484599113464},{"id":"https://openalex.org/C191735495","wikidata":"https://www.wikidata.org/wiki/Q876798","display_name":"Unconformity","level":3,"score":0.4234144985675812},{"id":"https://openalex.org/C138170599","wikidata":"https://www.wikidata.org/wiki/Q612133","display_name":"Clastic rock","level":3,"score":0.2965705096721649},{"id":"https://openalex.org/C77928131","wikidata":"https://www.wikidata.org/wiki/Q193343","display_name":"Tectonics","level":2,"score":0.25825804471969604},{"id":"https://openalex.org/C6494504","wikidata":"https://www.wikidata.org/wiki/Q82480","display_name":"Sedimentary rock","level":2,"score":0.1517798900604248}],"mesh":[],"locations_count":3,"locations":[{"id":"doi:10.1086/629839","doi":"https://doi.org/10.1086/629839","is_oa":false,"landing_page_url":"https://doi.org/10.1086/629839","pdf_url":null,"source":{"id":"https://openalex.org/S99859448","display_name":"The Journal of Geology","issn_l":"0022-1376","issn":["0022-1376","1537-5269"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","jufo-1","norway-1","poland-100","russia-white-list-1"],"host_organization":"https://openalex.org/P4310315672","host_organization_name":"University of Chicago Press","host_organization_lineage":["https://openalex.org/P4310315672","https://openalex.org/P4310315690"],"host_organization_lineage_names":["University of Chicago Press","University of Chicago"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"The Journal of Geology","raw_type":"journal-article"},{"id":"pmh:oai:localhost:11427/21027","doi":null,"is_oa":true,"landing_page_url":"http://hdl.handle.net/11427/21027","pdf_url":null,"source":{"id":"https://openalex.org/S4306402129","display_name":"Open University of Cape Town (University of Cape Town)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I157614274","host_organization_name":"University of Cape Town","host_organization_lineage":["https://openalex.org/I157614274"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by-nc","license_id":"https://openalex.org/licenses/cc-by-nc","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Journal of Geology","raw_type":"Journal Article"},{"id":"pmh:oai:open.uct.ac.za:11427/21027","doi":null,"is_oa":true,"landing_page_url":"http://doi.org/10.2307/30067385","pdf_url":null,"source":{"id":"https://openalex.org/S4306402129","display_name":"Open University of Cape Town (University of Cape Town)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I157614274","host_organization_name":"University of Cape Town","host_organization_lineage":["https://openalex.org/I157614274"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by-nc","license_id":"https://openalex.org/licenses/cc-by-nc","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Journal of Geology","raw_type":"Journal Article"}],"best_oa_location":{"id":"pmh:oai:localhost:11427/21027","doi":null,"is_oa":true,"landing_page_url":"http://hdl.handle.net/11427/21027","pdf_url":null,"source":{"id":"https://openalex.org/S4306402129","display_name":"Open University of Cape Town (University of Cape Town)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I157614274","host_organization_name":"University of Cape Town","host_organization_lineage":["https://openalex.org/I157614274"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by-nc","license_id":"https://openalex.org/licenses/cc-by-nc","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Journal of Geology","raw_type":"Journal Article"},"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":10,"referenced_works":["https://openalex.org/W1963731253","https://openalex.org/W1972787873","https://openalex.org/W1983957826","https://openalex.org/W1986560096","https://openalex.org/W2017093310","https://openalex.org/W2057016140","https://openalex.org/W2088496938","https://openalex.org/W2108971421","https://openalex.org/W2145604970","https://openalex.org/W2975847447"],"related_works":["https://openalex.org/W2133676632","https://openalex.org/W4293239846","https://openalex.org/W1971536436","https://openalex.org/W6983679612","https://openalex.org/W2157510573","https://openalex.org/W2149409854","https://openalex.org/W6891767682","https://openalex.org/W2022962974","https://openalex.org/W2065131634","https://openalex.org/W4294552727"],"abstract_inverted_index":{"Dating":[0],"of":[1,13,30,42,96,110,118,121,127,164],"single":[2],"zircons":[3],"from":[4,91],"low-grade":[5],"metamorphosed":[6],"rhyolites":[7],"in":[8,17,83,106,132,147],"the":[9,14,21,36,40,43,61,107,111,116,119,122,128,139,162,173],"Rosh":[10],"Pinah":[11],"Formation":[12],"Gariep":[15],"Belt":[16],"southwestern":[18],"Namibia,":[19],"using":[20],"Pb":[22],"evaporation":[23],"technique,":[24],"yielded":[25],"a":[26,75,92,151],"primary":[27],"crystallization":[28],"age":[29,59,77,87,95,163],"$$741":[31],"\\pm":[32,98],"6":[33],"Ma$$.":[34],"Both":[35],"stratigraphic":[37],"position":[38],"and":[39,126,134],"geochemistry":[41],"volcanic":[44,69,104,143],"rocks":[45,105],"indicate":[46],"an":[47,58],"early":[48],"continental":[49,81],"rift":[50,109,149],"environment.":[51],"The":[52,142],"new":[53,158],"data":[54],"not":[55],"only":[56],"provide":[57],"for":[60,79,101],"massive":[62],"Zn-Pb-Cu":[63],"sulfide":[64],"mineralization":[65],"associated":[66],"with":[67,154,172],"these":[68],"rocks,":[70],"but":[71],"they":[72],"also":[73],"set":[74],"maximum":[76],"limit":[78],"Neoproterozoic":[80],"break-up":[82],"southern":[84],"Namibia.":[85],"This":[86],"is":[88],"statistically":[89],"indistinguishable":[90],"recently":[93],"reported":[94],"$$748":[97],"3":[99],"Ma$$":[100],"stratigraphically":[102],"equivalent":[103],"northern":[108,135],"Damara":[112],"Belt,":[113],"suggesting":[114],"that":[115],"onset":[117],"formation":[120],"N-S-trending":[123],"Adamastor":[124],"ocean":[125,131],"NE-trending":[129],"Khomas":[130],"central":[133],"Namibia":[136],"occurred":[137],"at":[138],"same":[140],"time.":[141],"unit":[144],"directly":[145],"overlies,":[146],"both":[148],"grabens,":[150],"diamictite":[152],"horizon":[153],"glaciogenic":[155],"features.":[156],"Our":[157],"results":[159],"further":[160],"constrain":[161],"this":[165],"glacial":[166],"epoch,":[167],"which":[168],"may":[169],"be":[170],"correlated":[171],"Sturtian":[174],"glaciation,":[175],"to":[176],"around":[177],"750":[178],"Ma.":[179]},"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2025,"cited_by_count":1},{"year":2024,"cited_by_count":5},{"year":2023,"cited_by_count":15},{"year":2022,"cited_by_count":4},{"year":2021,"cited_by_count":4},{"year":2020,"cited_by_count":8},{"year":2019,"cited_by_count":8},{"year":2018,"cited_by_count":11},{"year":2017,"cited_by_count":5},{"year":2016,"cited_by_count":5},{"year":2015,"cited_by_count":6},{"year":2014,"cited_by_count":10},{"year":2013,"cited_by_count":8},{"year":2012,"cited_by_count":4}],"updated_date":"2026-11-04T10:54:05.112534","created_date":"2016-06-24T00:00:00"}
