{"id":"https://openalex.org/W2162326041","doi":null,"title":"Sandstone petrography, provenance and plate tectonic setting in Gondwana context of the southeastern Cape-Karoo Basin","display_name":"Sandstone petrography, provenance and plate tectonic setting in Gondwana context of the southeastern Cape-Karoo Basin","publication_year":1991,"publication_date":"1991-05-01","ids":{"openalex":"https://openalex.org/W2162326041","mag":"2162326041"},"language":"en","primary_location":{"id":"mag:2162326041","doi":null,"is_oa":false,"landing_page_url":"http://sajg.geoscienceworld.org/content/94/2-3/137","pdf_url":null,"source":{"id":"https://openalex.org/S17383894","display_name":"South African Journal of Geology","issn_l":"1012-0750","issn":["1012-0750","1996-8590"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","dongbi-c","jufo-1","ki-jl-1","norway-1","poland-40","russia-white-list-2","vabb-shw"],"host_organization":"https://openalex.org/P4310320822","host_organization_name":"Geological Society of South Africa","host_organization_lineage":["https://openalex.org/P4310320822"],"host_organization_lineage_names":["Geological Society of South Africa"],"type":"journal"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":"South African Journal of Geology","raw_type":null},"volume":null,"type":"article","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/A5049329332","display_name":"M. R. Johnson","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":true,"raw_author_name":"M. R. Johnson","raw_affiliation_strings":["Geol. Surv. South Africa, Petroria, South Africa"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Geol. Surv. South Africa, Petroria, South Africa","institution_ids":[]}]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":0,"corresponding_author_ids":["https://openalex.org/A5049329332"],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":2.0137,"has_fulltext":false,"cited_by_count":154,"citation_normalized_percentile":{"value":0.84979025,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":99},"biblio":{"volume":"94","issue":null,"first_page":"137","last_page":"154"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10001","display_name":"Geological and Geochemical Analysis","score":0.5449000000953674,"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":0.5449000000953674,"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/T11740","display_name":"Geochemistry and Elemental Analysis","score":0.3637999892234802,"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/T10965","display_name":"Geological formations and processes","score":0.06620000302791595,"subfield":{"id":"https://openalex.org/subfields/1904","display_name":"Earth-Surface Processes"},"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/sandstone-petrography","display_name":"sandstone petrography","score":0.9919999837875366},{"id":"https://openalex.org/keywords/sediment-provenance","display_name":"sediment provenance","score":0.8479999899864197},{"id":"https://openalex.org/keywords/plate-tectonic-setting","display_name":"plate tectonic setting","score":0.8949999809265137},{"id":"https://openalex.org/keywords/cape-supergroup","display_name":"Cape Supergroup","score":0.8920000195503235},{"id":"https://openalex.org/keywords/gondwana","display_name":"Gondwana","score":0.8510000109672546},{"id":"https://openalex.org/keywords/qfl-diagram","display_name":"QFL diagram","score":0.8209999799728394},{"id":"https://openalex.org/keywords/grain-size","display_name":"grain size","score":0.7440000176429749},{"id":"https://openalex.org/keywords/mineralogy","display_name":"mineralogy","score":0.6119999885559082},{"id":"https://openalex.org/keywords/diamictite","display_name":"diamictite","score":0.6019999980926514},{"id":"https://openalex.org/keywords/beaufort-group","display_name":"Beaufort Group","score":0.7129999995231628},{"id":"https://openalex.org/keywords/ecca-group","display_name":"Ecca Group","score":0.8169999718666077}],"concepts":[{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.9406307935714722},{"id":"https://openalex.org/C2781148125","wikidata":"https://www.wikidata.org/wiki/Q80583","display_name":"Gondwana","level":3,"score":0.8394374847412109},{"id":"https://openalex.org/C2780049196","wikidata":"https://www.wikidata.org/wiki/Q23582628","display_name":"Provenance","level":2,"score":0.7960779666900635},{"id":"https://openalex.org/C59235061","wikidata":"https://www.wikidata.org/wiki/Q289600","display_name":"Petrography","level":2,"score":0.7907161116600037},{"id":"https://openalex.org/C64957494","wikidata":"https://www.wikidata.org/wiki/Q7643409","display_name":"Supergroup","level":2,"score":0.7823787927627563},{"id":"https://openalex.org/C2777628658","wikidata":"https://www.wikidata.org/wiki/Q1034198","display_name":"Cape","level":2,"score":0.6570870876312256},{"id":"https://openalex.org/C151730666","wikidata":"https://www.wikidata.org/wiki/Q7205","display_name":"Paleontology","level":1,"score":0.6134902834892273},{"id":"https://openalex.org/C2779343474","wikidata":"https://www.wikidata.org/wiki/Q3109175","display_name":"Context (archaeology)","level":2,"score":0.5471514463424683},{"id":"https://openalex.org/C109007969","wikidata":"https://www.wikidata.org/wiki/Q749565","display_name":"Structural basin","level":2,"score":0.5324218273162842},{"id":"https://openalex.org/C114793014","wikidata":"https://www.wikidata.org/wiki/Q52109","display_name":"Geomorphology","level":1,"score":0.332854688167572},{"id":"https://openalex.org/C166957645","wikidata":"https://www.wikidata.org/wiki/Q23498","display_name":"Archaeology","level":1,"score":0.11836081743240356},{"id":"https://openalex.org/C205649164","wikidata":"https://www.wikidata.org/wiki/Q1071","display_name":"Geography","level":0,"score":0.05394798517227173}],"mesh":[],"locations_count":1,"locations":[{"id":"mag:2162326041","doi":null,"is_oa":false,"landing_page_url":"http://sajg.geoscienceworld.org/content/94/2-3/137","pdf_url":null,"source":{"id":"https://openalex.org/S17383894","display_name":"South African Journal of Geology","issn_l":"1012-0750","issn":["1012-0750","1996-8590"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","dongbi-c","jufo-1","ki-jl-1","norway-1","poland-40","russia-white-list-2","vabb-shw"],"host_organization":"https://openalex.org/P4310320822","host_organization_name":"Geological Society of South Africa","host_organization_lineage":["https://openalex.org/P4310320822"],"host_organization_lineage_names":["Geological Society of South Africa"],"type":"journal"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":"South African Journal of Geology","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/W7160019902","https://openalex.org/W2767087321","https://openalex.org/W2909201321","https://openalex.org/W2029557784","https://openalex.org/W3092953031","https://openalex.org/W1972810551","https://openalex.org/W2030051564","https://openalex.org/W1232375116","https://openalex.org/W2177791208","https://openalex.org/W2019851644"],"abstract_inverted_index":{"Mineralogical":[0],"and":[1,14,21,45,56],"grain-size":[2],"data":[3],"obtained":[4],"from":[5,17,76,111],"a":[6,49,112],"thin-section":[7],"petrographic":[8],"study":[9,103],"of":[10,28,70,88],"approximately":[11],"300":[12],"sandstone":[13],"diamictite":[15],"samples":[16],"the":[18,25,29,36,41,53,61,67,71,86,89,96,106],"Cape":[19,37,107],"Supergroup":[20,38,108],"Karoo":[22,72],"Sequence":[23,73],"in":[24,35,40,66],"southeastern":[26],"part":[27],"Cape-Karoo":[30,97],"Basin":[31,98],"are":[32,63,99],"presented.":[33],"Sandstones":[34],"fall":[39],"ultraquartzose,":[42],"quartzose,":[43],"subfeldspathic,":[44],"feldspathic":[46],"fields":[47],"on":[48],"QFL":[50],"diagram.":[51],"In":[52],"Ecca":[54],"Group":[55],"Adelaide":[57],"Subgroup":[58],"(Beaufort":[59],"Group)":[60],"sandstones":[62],"ultralithofeldspathic,":[64],"but":[65],"upper":[68],"units":[69],"they":[74],"range":[75],"lithic":[77],"to":[78,95],"sublithic.":[79],"Deductions":[80],"made":[81],"by":[82],"previous":[83],"workers":[84],"concerning":[85],"nature":[87],"source":[90],"areas":[91],"that":[92,105],"supplied":[93],"sediment":[94],"reviewed.":[100],"The":[101],"present":[102],"indicates":[104],"was":[109],"derived":[110],"non-orogenic":[113],"continental":[114],"block":[115]},"counts_by_year":[{"year":2025,"cited_by_count":1},{"year":2024,"cited_by_count":4},{"year":2022,"cited_by_count":6},{"year":2021,"cited_by_count":4},{"year":2020,"cited_by_count":7},{"year":2019,"cited_by_count":8},{"year":2018,"cited_by_count":7},{"year":2017,"cited_by_count":6},{"year":2016,"cited_by_count":7},{"year":2015,"cited_by_count":7},{"year":2014,"cited_by_count":8},{"year":2012,"cited_by_count":7}],"updated_date":"2026-10-16T09:59:22.235173","created_date":"2016-06-24T00:00:00"}