{"id":281,"date":"2012-10-29T06:40:29","date_gmt":"2012-10-29T10:40:29","guid":{"rendered":"http:\/\/web.colby.edu\/ragastal\/?page_id=281"},"modified":"2026-05-25T09:05:25","modified_gmt":"2026-05-25T13:05:25","slug":"ptb-karoo-basin","status":"publish","type":"page","link":"https:\/\/web.colby.edu\/ragastal\/publications\/ptb-karoo-basin\/","title":{"rendered":"Permian&#8211;Triassic Boundary, Karoo Basin"},"content":{"rendered":"<h5>download available .pdf by clicking on appropriate <img decoding=\"async\" src=\"http:\/\/www.colby.edu\/%7Eragastal\/Images\/pdf.gif\" alt=\"\" border=\"0\"><\/h5>\n<h3>Publications with Students<\/h3>\n<ul>\n<li><strong>BOLD<\/strong> indicates Graduate Student co-author<\/li>\n<li><strong><em>BOLD ITALICS<\/em><\/strong> indicates Undergraduate Student co-author\n<ul>\n<li>Gastaldo, R.A., Neveling, J., Kamo, S.L. Akatakpo, S.O., Geissman, J.W., Roch\u00edn-Ba\u00f1aga, H., and Tabor, N., 2026, Conundrums of Wapadsberg Pass, South Africa, and other locales: the death knell of the End-Permian vertebrate-extinction model: Geological Society of America Bulletin, v. 138, https:\/\/doi.org\/10.1130\/B38563.1.<\/li>\n<li>Roch\u00edn-Ba\u00f1aga, H., Gastaldo, R.A., Davis, D.W.,&nbsp; Neveling, J., Kamo, S.L., Looy, C.V., and Geissman, J.W., 2024, U-Pb dating of pedogenic calcite near the Permian\u2014Triassic boundary, Karoo Basin: Geological Society of America Bulletin, https:\/\/doi.org\/10.1130\/B36968.1&nbsp;<\/li>\n<li>Gastaldo, R.A., and Bamford, M., 2023, The influence of time and taphonomy on the paleobotanical record of the Permian\u2014Triassic transition of the Karoo Basin (and elsewhere): Journal of African Earth Sciences, 204, 104960 DOI: <a href=\"https:\/\/doi.org\/10.1016\/j.jafrearsci.2023.104960\">https:\/\/doi.org\/10.1016\/j.jafrearsci.2023.104960 <\/a><\/li>\n<li>Gibling, M., <strong><em>Jia, R., <\/em><\/strong>Gastaldo, R.A.<strong><em>, <\/em><\/strong>Neveling, J. and Roch\u00edn-Ba\u00f1aga, H., 2023, Braided-river architecture of the Triassic Swartberg Member, Katberg Formation, South Africa: Assessing age, fluvial style and paleoclimate after the end-Permian extinction: Journal of Sedimentary Research <a href=\"_wp_link_placeholder\" data-wplink-edit=\"true\">https:\/\/doi-org.colby.idm.oclc.org\/10.2110\/jsr.018<\/a><\/li>\n<li>Gastaldo, R.A., Neveling, J., Geissman, J.W., Kamo, S.L., and Looy, C.V., 2021, A Tale of Two Tweefonteins: What Physical Correlation, Geochronology, Magnetic Polarity Stratigraphy, and Palynology say about the end-Permian terrestrial extinction paradigm: Geological Society of America Bulletin, v. 133. <img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" src=\"http:\/\/www.colby.edu\/~ragastal\/Images\/pdf.gif\" alt=\"\" width=\"16\" height=\"16\" border=\"0\"> <a href=\"https:\/\/doi.org\/10.1130\/B35830.1\/5345349\/b35830.pdf\">https:\/\/doi.org\/10.1130\/B35830.1\/5345349\/b35830.pdf<\/a><\/li>\n<li>Gastaldo, R.A., Tabor, N., and Neveling, J., 2020, Trends in Late Permian (Changhsingian) paleoclimate in the <em>Daptocephalus<\/em> Assemblage Zone, Eastern Cape Province, South Africa: Frontiers in Earth Science, v. 8, n. 567109 <a href=\"http:\/\/www.colby.edu\/~ragastal\/RAG_reprints\/RAG2020e.pdf\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/www.colby.edu\/~ragastal\/Images\/pdf.gif\" alt=\"\" width=\"16\" height=\"16\" border=\"0\"><\/a><a href=\"http:\/\/DOI:10.3389\/fevo.2020.567109\">DOI:10.3389\/fevo.2020.567109<\/a><\/li>\n<li>&nbsp;Gastaldo, R.A., <strong><em>Kus, K.<\/em>,<\/strong> Neveling, J., and Tabor, N., 2020, Calcic paleoVertisols in the upper <em>Daptocephalus<\/em> Assemblage Zone, Balfour Formation, Karoo Basin, South Africa: Implications for Late Permian Climate: Journal of Sedimentary Research, v. 90, p. 609-628. <a href=\"http:\/\/www.colby.edu\/~ragastal\/RAG_reprints\/RAG2020d.pdf\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/www.colby.edu\/~ragastal\/Images\/pdf.gif\" alt=\"\" width=\"16\" height=\"16\" border=\"0\"><\/a> DOI: <a href=\"http:\/\/dx.doi.org\/10.2110\/jsr.2020.32\">http:\/\/dx.doi.org\/10.2110\/jsr.2020.32<\/a><\/li>\n<li>Gastaldo, R.A., Kamo, S.L., Neveling, J., Geissman, J., Looy, C.V., and Martini, A.M., 2020, The base of the <em>Lystrosaurus<\/em> Assemblage Zone, Karoo Basin, predates the end-Permian marine extinction: Nature Communications <a href=\"https:\/\/doi.org\/10.1038\/s41467-020-15243-7\">https:\/\/doi.org\/10.1038\/s41467-020-15243-7<\/a> or <a href=\"https:\/\/rdcu.be\/b26a0\">https:\/\/rdcu.be\/b26a0<\/a><\/li>\n<li>Gastaldo, R.A., and Neveling, J., 2020, Comment on \u201cPermian\u2014Triassic vertebrate footprints from South Africa: Ichnotaxonomy, producers and biostratigraphy through two major faunal crises\u201d by Marchetti, L., Klein, H., Buchwitz, M., Ronchi, A., Smith, R.M.H., DeKlerk, W.J., Sciscio, L., and Groenewald, G.H. (2019): Gondwana Research v. 78, p. 375-378.&nbsp; <a href=\"https:\/\/doi.org\/10.1016\/j.gr.2019.08.003\">https:\/\/doi.org\/10.1016\/j.gr.2019.08.003 <\/a> <a href=\"http:\/\/www.colby.edu\/~ragastal\/RAG_reprints\/RAG2019c.pdf\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/www.colby.edu\/~ragastal\/Images\/pdf.gif\" alt=\"\" width=\"16\" height=\"16\" border=\"0\"><\/a><\/li>\n<li>Gastaldo, R.A., Neveling, J., Geissman, J.W., and Looy, C.V., 2019,Testing the <em>Daptocephalus<\/em> and <em>Lystrosaurus<\/em> Assemblage Zones in a Lithostratographic, Magnetostratigraphic, and Palynological Framework in the Free State, South Africa: PALAIOS, v. 34, p. 542-561. DOI:<a href=\"https:\/\/nam02.safelinks.protection.outlook.com\/?url=http%3A%2F%2Fdx.doi.org%2F10.2110%2Fpalo.2019.019&amp;data=02%7C01%7Cgeissman%40utdallas.edu%7C30d0c15ac19d45f3896908d73790ef3b%7C8d281d1d9c4d4bf7b16e032d15de9f6c%7C0%7C0%7C637038967952164703&amp;sdata=czE99GlFry4Tb1KMoaq77Bz5qSHRLEvIv4WqJEY87jU%3D&amp;reserved=0\" target=\"_blank\" rel=\"noopener\">http:\/\/dx.doi.org\/10.2110\/palo.2019.019<\/a> <a href=\"http:\/\/www.colby.edu\/~ragastal\/RAG_reprints\/RAG2019d.pdf\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/www.colby.edu\/~ragastal\/Images\/pdf.gif\" alt=\"\" width=\"16\" height=\"16\" border=\"0\"><\/a><\/li>\n<li>Gastaldo, R.A., Neveling, J., Geissman, J.W., and <strong><em>Li., J.W.<\/em><\/strong>, 2019, A Multidisciplinary Approach to Review the Vertical and Lateral Facies Relationships of the Purported Vertebrate-defined Terrestrial Boundary Interval at Bethulie, Karoo Basin, South Africa: Earth Science Reviews, v. 189. p. 220-243: <a href=\"http:\/\/www.colby.edu\/~ragastal\/RAG_reprints\/RAG2019b.pdf\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/www.colby.edu\/~ragastal\/Images\/pdf.gif\" alt=\"\" width=\"16\" height=\"16\" border=\"0\"><\/a>&nbsp; d<a href=\"http:\/\/oi 10.1016\/j.earscirev.2017.08.002\">oi 10.1016\/j.earscirev.2017.08.002<\/a><\/li>\n<li>Gastaldo, R.A., Neveling, J., Geissman, J.W., and Kamo, S.L., 2018, Lithostratigraphic and Magnetostratigraphic Framework in a Geochronologic Context for a Purported Permian\u2013Triassic Boundary Section at Old (West) Lootsberg Pass, Karoo Basin, South Africa: Geological Society of America Bulletin, v. 130, p. 1411-1438. https:\/\/ doi .org \/10 .1130 \/B31881 .1 (available online 3 April 2018) <a href=\"http:\/\/www.colby.edu\/~ragastal\/RAG_reprints\/RAG2018a.pdf\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/www.colby.edu\/~ragastal\/Images\/pdf.gif\" alt=\"\" width=\"16\" height=\"16\" border=\"0\"><\/a><\/li>\n<li>Gastaldo, R.A., Neveling, J., Looy, C.V., Bamford, M.K., Kamo, S.L., and Geissman, J.W., 2017, Paleontology of the Blaauwater 67 Farm, South Africa: Testing the <em>Daptocephalus<\/em>\/<em>Lystrosaurus<\/em> Biozone Boundary in a Stratigraphic Framework: PALAIOS, v. 34, p. 349-366. <a href=\"http:\/\/www.colby.edu\/~ragastal\/RAG_reprints\/RAG2017a.pdf\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/www.colby.edu\/~ragastal\/Images\/pdf.gif\" alt=\"\" width=\"16\" height=\"16\" border=\"0\"><\/a> <a href=\"http:\/\/DOI: http:\/\/dx.doi.org\/10.2110\/palo.2016.106\">http:\/\/DOI: http:\/\/dx.doi.org\/10.2110\/palo.2016.106<\/a><\/li>\n<li><strong><em>Li, J.,<\/em> <\/strong>Gastaldo, R.A., Neveling, J., and Geissman, J.W., 2017, Siltstones Across the <em>Daptocephalus<\/em> (<em>Dicynodon<\/em>) and <em>Lystrosaurus<\/em> Assemblage Zones, Karoo Basin, South Africa, Show No Evidence for Aridification: Journal of Sedimentary Research, v. 87, p. 653-671.<a href=\"http:\/\/www.colby.edu\/~ragastal\/RAG_reprints\/RAG2017b.pdf\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/www.colby.edu\/~ragastal\/Images\/pdf.gif\" alt=\"\" width=\"16\" height=\"16\" border=\"0\">&nbsp;DOI: http:\/\/dx.doi.org\/10.2110\/jsr.2017.35<\/a><\/li>\n<li>Neveling, J., Gastaldo, R.A., Kamo, S.L., Geissman, J.W., Looy, C.V., and Bamford, M.K., 2016, A Review of Stratigraphic, Geochemical, and Paleontologic Correlations Data of the Terrestrial end-Permian record in the Karoo Basin, South Africa: in Linol, B., and de Wit, M.,&nbsp; eds., Origin and Evolution of the Cape Mountains and Karoo Basin: Regional Geology Reviews, Springer Publishing, Chapter 15, p. 151-157.&nbsp;<a href=\"http:\/\/www.colby.edu\/~ragastal\/RAG_reprints\/RAG2016c.pdf\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/www.colby.edu\/~ragastal\/Images\/pdf.gif\" alt=\"\" width=\"16\" height=\"16\" border=\"0\"><\/a> <a href=\"http:\/\/DOI 10.1007\/978-63-319-40859-1_15\">doi 10.1007\/978-63-319-40859-1_15<\/a><\/li>\n<li>Neveling, J., Gastaldo, R.A., and Geissman, J.W., 2016, The Permo\u2013Triassic Boundary in the Karoo Basin: 35th International Geological Congress Pre-Meeting Field Trip Guide, Council for Geoscience, Pretoria, P-3, 102 p. <a href=\"http:\/\/www.colby.edu\/~ragastal\/RAG_reprints\/RAG2016c.pdf\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/www.colby.edu\/~ragastal\/Images\/pdf.gif\" alt=\"\" width=\"16\" height=\"16\" border=\"0\"><\/a><\/li>\n<li>Gastaldo, R.A., and Neveling, J., 2016, Comment on &#8220;Anatomy of a mass extinction: Sedimentological and taphonomic evidence for drought-induced die-offs at the Permo-Triassic boundary in the main Karoo Basin, South Africa&#8221; by R.M.H. Smith and J. Botha-Brink, Palaeogeography, Palaeoclimatology, Palaeoecology 396:99-118.: Palaeogeography, Palaeoclimatology, Palaeoecology.<a href=\"http:\/\/www.colby.edu\/~ragastal\/RAG_reprints\/RAG2016a.pdf\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/www.colby.edu\/~ragastal\/Images\/pdf.gif\" alt=\"\" width=\"16\" height=\"16\" border=\"0\"><\/a><br \/>\ndoi 10.1016 \/j.palaeo.2014.06.027<\/li>\n<li><em>The Economist:<\/em> <a href=\"http:\/\/www.economist.com\/news\/science-and-technology\/21669606-mass-extinctions-are-more-complicated-they-might-first-appear-layers\" target=\"_blank\" rel=\"noopener noreferrer\">Layers of Meaning<\/a>: 2 October 2015<\/li>\n<li>Gastaldo, R.A., Kamo, S.L., Neveling, J., Geissman, J.W., Bamford, M., and Looy, C., 2015, Is the vertebrate-defined Permian\u2013Triassic Boundary in the Karoo Basin, South Africa, the terrestrial expression of the End Permian marine event?: GEOLOGY, v. 43, p. 939-942 (Open Access article)<br \/>\n<a href=\"http:\/\/www.colby.edu\/~ragastal\/RAG_reprints\/RAG2015a.pdf\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/www.colby.edu\/%7Eragastal\/Images\/pdf.gif\" alt=\"\" width=\"16\" height=\"16\" border=\"0\"> doi: 10.1130\/G37040.1<\/a><\/li>\n<li>Gastaldo, R.A.,<strong><em> Knight, C.,<\/em><\/strong> Neveling, J., and Tabor, N., 2014, Late Permian Paleosols from Wapadsberg Pass, South Africa: Implications for Changhsingian Climate: Geological Society of America Bulletin, v. 126, p. 665-679. <a href=\"http:\/\/www.colby.edu\/~ragastal\/RAG_reprints\/RAG2014a.pdf\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/www.colby.edu\/~ragastal\/Images\/pdf.gif\" alt=\"\" width=\"16\" height=\"16\" border=\"0\"><\/a> doi: 10.1130\/B30887.1<\/li>\n<li>Gastaldo, R.A., <strong><em>Pludow, B.A.<\/em><\/strong>, and Neveling, J., 2013, Mud Aggregates from the Katberg Formation, South Africa: Additional Evidence for Early Triassic Degradational Landscapes: Journal of Sedimentary Research, v. 83, p. 531-540. <a href=\"http:\/\/www.colby.edu\/~ragastal\/RAG_reprints\/RAG2013a.pdf\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" style=\"border: 0px none\" src=\"http:\/\/www.colby.edu\/~ragastal\/Images\/pdf.gif\" alt=\"\" width=\"16\" height=\"16\" border=\"0\"><\/a><\/li>\n<li>Gastaldo, R.A., and Neveling, J., 2012, The terrestrial Permian-Triassic boundary event is a nonevent: REPLY: Geology, v. 40, p. e257, doi:10.1130\/G32975Y.1 <a href=\"http:\/\/www.colby.edu\/~ragastal\/RAG_reprints\/RAG2012a.pdf\"><img decoding=\"async\" src=\"http:\/\/www.colby.edu\/~ragastal\/Images\/pdf.gif\" alt=\"\" border=\"0\"><\/a><\/li>\n<li>Prevec, R., Gastaldo, R.A., Neveling, J.,<strong><em> Reid, S.B.,<\/em><\/strong> and Looy, C.V., 2010, An Autochthonous Glossoperid flora with Latest Permian palynomorphs and its depositional setting from the <em>Dicynodon<\/em> Assemblage Zone of the southern Karoo Basin, South Africa: Palaeogeography, Palaeoclimatology, Palaeoecology, v. 292, p. 381-408. (doi: 10.1016\/j.palaeo.2010.052) <a href=\"http:\/\/www.colby.edu\/~ragastal\/RAG_reprints\/RAG2010c.pdf\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/www.colby.edu\/~ragastal\/Images\/pdf.gif\" alt=\"\" width=\"16\" height=\"16\" border=\"0\"><\/a><\/li>\n<li>Prevec, R., Labandeira, C.C., Neveling, J., Gastaldo, R.A., Looy, C.V., and Bamford, M.K., 2009, Portrait of a Gondwanan Ecosystem: A New Late Permian Locality from Kwazulu-Natal, South Africa: Review of Palaeobotany and Palynology, v. 156, p. 454-493. <a href=\"http:\/\/www.colby.edu\/~ragastal\/RAG_reprints\/RAG2009e.pdf\"><img decoding=\"async\" src=\"http:\/\/www.colby.edu\/~ragastal\/Images\/pdf.gif\" alt=\"\" border=\"0\"><\/a><\/li>\n<li><strong><em>Pace, D.W., <\/em><\/strong> Gastaldo, R.A., and Neveling, J., 2009, Aggradational and Degradational Landscapes in the Early Triassic of the Karoo Basin and Evidence for Dramatic Climate Shifts Following the P\/Tr Event: Journal of Sedimentary Research, v. 79, p. 276-291. <a href=\"http:\/\/www.colby.edu\/~ragastal\/RAG_reprints\/RAG2009b.pdf\"><img decoding=\"async\" src=\"http:\/\/www.colby.edu\/~ragastal\/Images\/pdf.gif\" alt=\"\" border=\"0\"><\/a><\/li>\n<li>Gastaldo, R.A., Neveling, J., <strong><em>Clark, C.K.<\/em>,<\/strong> and <strong><em>Newbury, S.S<\/em>.<\/strong> , 2009, The terrestrial Permian-Triassic boundary event bed is a non-event: GEOLOGY, v. 37, n. 3, p. 199-202. <a href=\"http:\/\/www.colby.edu\/~ragastal\/RAG_reprints\/RAG2009a.pdf\"><img decoding=\"async\" src=\"http:\/\/www.colby.edu\/~ragastal\/Images\/pdf.gif\" alt=\"\" border=\"0\"><\/a><\/li>\n<li>Gastaldo, R.A., and <em><strong>Rolerson, M.W.<\/strong><\/em>, 2008, <em>Katbergia<\/em> gen. nov., A New Trace Fossil from the Upper Permian and Lower Triassic Rocks of the Karoo Basin: Implications for Paleoenvironmental Conditions at the P\/Tr Extinction Event: Palaeontology, v. 51, p. 215-229. <a href=\"http:\/\/www.colby.edu\/~ragastal\/RAG_reprints\/RAG2008a.pdf\"><img decoding=\"async\" src=\"http:\/\/www.colby.edu\/~ragastal\/Images\/pdf.gif\" alt=\"\" border=\"0\"><\/a><\/li>\n<li>Gastaldo, R.A., Adendorff, R., Bamford, M.K., Labandeira, Neveling, J., and Sims, H.J., 2005, Taphonomic Trends of Macrofloral Assemblages Across the Permian-Triassic Boundary, Karoo Basin, South Africa: PALAIOS, v. 20, p. 478-497. (doi 10.1016\/j.palaeo.2010.03.052) <a href=\"http:\/\/www.colby.edu\/~ragastal\/RAG_reprints\/RAG2005a.pdf\"><img decoding=\"async\" src=\"http:\/\/www.colby.edu\/~ragastal\/Images\/pdf.gif\" alt=\"\" border=\"0\"><\/a><\/li>\n<li><em><strong>Selover, R.W.<\/strong>,<\/em> and Gastaldo, R.A., 2005, A Reinterpretation of the Wagendrift Quarry, Estcourt, Kwazulu Natal Province, and its Implications for Karoo Basin Paleogeography: Journal of outh African Geology, v. 108, p. 17-26. <a href=\"http:\/\/www.colby.edu\/~ragastal\/RAG_reprints\/RAG2005d.pdf\"><img decoding=\"async\" src=\"http:\/\/www.colby.edu\/~ragastal\/Images\/pdf.gif\" alt=\"\" border=\"0\"><\/a><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>download available .pdf by clicking on appropriate Publications with Students BOLD indicates Graduate Student co-author BOLD ITALICS indicates Undergraduate Student co-author Gastaldo, R.A., Neveling, J., Kamo, S.L. Akatakpo, S.O., Geissman, J.W., Roch\u00edn-Ba\u00f1aga, H., and Tabor, N., 2026, Conundrums of Wapadsberg &hellip; <a href=\"https:\/\/web.colby.edu\/ragastal\/publications\/ptb-karoo-basin\/\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":423,"featured_media":0,"parent":2,"menu_order":0,"comment_status":"closed","ping_status":"open","template":"onecolumn-page.php","meta":{"ngg_post_thumbnail":0,"footnotes":""},"_links":{"self":[{"href":"https:\/\/web.colby.edu\/ragastal\/wp-json\/wp\/v2\/pages\/281"}],"collection":[{"href":"https:\/\/web.colby.edu\/ragastal\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/web.colby.edu\/ragastal\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/web.colby.edu\/ragastal\/wp-json\/wp\/v2\/users\/423"}],"replies":[{"embeddable":true,"href":"https:\/\/web.colby.edu\/ragastal\/wp-json\/wp\/v2\/comments?post=281"}],"version-history":[{"count":60,"href":"https:\/\/web.colby.edu\/ragastal\/wp-json\/wp\/v2\/pages\/281\/revisions"}],"predecessor-version":[{"id":2990,"href":"https:\/\/web.colby.edu\/ragastal\/wp-json\/wp\/v2\/pages\/281\/revisions\/2990"}],"up":[{"embeddable":true,"href":"https:\/\/web.colby.edu\/ragastal\/wp-json\/wp\/v2\/pages\/2"}],"wp:attachment":[{"href":"https:\/\/web.colby.edu\/ragastal\/wp-json\/wp\/v2\/media?parent=281"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}