{"corpus_id":128689862,"paper_sha":"d59f62062be4e86b775fd34bb61d91e264a5fa09","doi":"10.1144/GSL.SP.1964.001.01.18","arxiv_id":null,"pmid":null,"pmcid":null,"mag_id":2067215842,"dblp_id":null,"acl_id":null,"title":"The Jurassic period","year":1964,"publication_date":null,"venue":"Geological Society Special Publication","journal":{"name":"Geological Society, London, Special Publications","pages":"203 - 205","volume":"1"},"journal_issn":null,"journal_title":null,"publication_types":[],"pubmed_pub_types":null,"s2_fields_of_study":["Geology"],"reference_count":2,"citation_count":171,"influential_citation_count":33,"is_open_access":false,"arxiv_categories":null,"arxiv_license":null,"arxiv_journal_ref":null,"mesh_headings":null,"chemicals":null,"comments_corrections":null,"source_flags":1,"s2_open_access_pdf_url":null,"s2_open_access_landing_url":null,"s2_open_access_license":null,"s2_open_access_status":null,"pmc_open_access_pdf_url":null,"pmc_open_access_landing_url":null,"pmc_open_access_license":null,"pmc_open_access_status":null,"unpaywall_open_access_pdf_url":null,"unpaywall_open_access_landing_url":null,"unpaywall_open_access_license":null,"unpaywall_open_access_status":null,"abstract":"Summary Seven critical biotite ages and five minimum glauconite ages for the Jurassic are discussed in relation to the time-scales of Holmes (1959) and Kulp (1961). It is proposed that the date for the base of the system should be amended to 190-5 m.y., the date for the end of the period remaining at 135 m.y.; the estimate for the length of the Jurassic is thus increased by 10 or 15 m.y. to 55–60 m.y.","claims":[{"public_id":"cl_8250ee467f5ffa13755467d7f2192c95","status":"active","text":"Seven critical biotite ages and five minimum glauconite ages for the Jurassic are analyzed in relation to the Holmes (1959) and Kulp (1961) time-scales.","confidence":0.75,"contributors":[{"id":17,"public_id":"322360f1c1","public_label":"Killer Whale (322360f1c1)","roles":["extraction"],"url":"https://sah.borca.ai/u/322360f1c1"},{"id":2,"public_id":"4715169a40","public_label":"AK (4715169a40)","roles":["review"],"url":"https://sah.borca.ai/u/4715169a40"},{"id":1165,"public_id":"ezd9qvkvax","public_label":"The Reverser‮ 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