{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,12]],"date-time":"2026-03-12T15:16:00Z","timestamp":1773328560978,"version":"3.50.1"},"reference-count":41,"publisher":"Geological Society of London","issue":"1","license":[{"start":{"date-parts":[[2020,10,23]],"date-time":"2020-10-23T00:00:00Z","timestamp":1603411200000},"content-version":"unspecified","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["www.lyellcollection.org"],"crossmark-restriction":true},"short-container-title":["JGS"],"published-print":{"date-parts":[[2021,1]]},"abstract":"<jats:p>\n            The Northern Kenya Rift is an important natural laboratory for understanding continental rifting processes. However, much of the current understanding of its geological evolution is based on surface outcrops within footwall highs due to a lack of subsurface geological constraints. In this paper, we present an investigation of the Cenozoic stratigraphy and volcano-tectonic relationship of the volcanic sequences within the Turkana Depression (namely the North Lokichar, North Kerio and Turkana Basins). We integrate regional seismic reflection data collected as part of ongoing petroleum exploration in the area with lithological and biostratigraphic data from new wells that were drilled in 2014 and 2015 (Epir-1 and Emesek-1). This has allowed linking and extrapolation of the detailed stratigraphy of the paleontologically important Lothagam site to the volcanic sequences within the Napedet Hills, North Lokichar, North Kerio and Turkana Basins. The site of the Plio-Pleistocene-age Turkana Fault, which separates the North Lokichar Basin from the Turkana and North Kerio Basins, appears previously to have acted as a focus of Middle Miocene volcanism\n            <jats:italic>c<\/jats:italic>\n            . 5\u2005Ma prior to the main period of movement on the fault. Our study highlights how subsurface and outcrop information can be combined to give a more in-depth knowledge of the magmatic history within rift basins.\n          <\/jats:p>","DOI":"10.1144\/jgs2020-110","type":"journal-article","created":{"date-parts":[[2020,9,11]],"date-time":"2020-09-11T17:55:24Z","timestamp":1599846924000},"update-policy":"https:\/\/doi.org\/10.1144\/crossmark-policy","source":"Crossref","is-referenced-by-count":16,"title":["Linking surface and subsurface volcanic stratigraphy in the Turkana Depression of the East African Rift system"],"prefix":"10.1144","volume":"178","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-3083-735X","authenticated-orcid":false,"given":"Nick","family":"Schofield","sequence":"first","affiliation":[{"name":"Department of Geology and Petroleum Geology, University of Aberdeen, Aberdeen 8 AB24 3FX, UK"}]},{"given":"Richard","family":"Newton","sequence":"additional","affiliation":[{"name":"Tullow Oil plc., 9 Chiswick Place, London, W4 5XT, UK"}]},{"given":"Scott","family":"Thackrey","sequence":"additional","affiliation":[{"name":"Total CSTJF, Avenue Larribau, 64000, Pau, France"}]},{"given":"Douglas","family":"Watson","sequence":"additional","affiliation":[{"name":"Department of Geology and Petroleum Geology, University of Aberdeen, Aberdeen 8 AB24 3FX, UK"}]},{"given":"David","family":"Jolley","sequence":"additional","affiliation":[{"name":"Department of Geology and Petroleum Geology, University of Aberdeen, Aberdeen 8 AB24 3FX, UK"}]},{"given":"Chris","family":"Morley","sequence":"additional","affiliation":[{"name":"PTT Exploration and Production, Enco, Soi 11, Vibhavadi-Rangsit Road, 10400, Thailand"}]}],"member":"1881","published-online":{"date-parts":[[2020,10,23]]},"reference":[{"key":"e_1_3_5_2_1","first-page":"67","article-title":"Geology of the Eastern Rift System of Africa","volume":"136","author":"Baker B.H.","year":"1972","unstructured":"Baker, B.H., Mohr, P.A. and Williams, L.A.J. 1972. Geology of the Eastern Rift System of Africa. Geological Society of America Special Paper, 136, 67.","journal-title":"Geological Society of America Special Paper"},{"key":"e_1_3_5_3_1","doi-asserted-by":"publisher","DOI":"10.1130\/G46468.1"},{"key":"e_1_3_5_5_1","doi-asserted-by":"publisher","DOI":"10.1016\/0047-2484(92)90029-9"},{"key":"e_1_3_5_6_1","doi-asserted-by":"publisher","DOI":"10.1038\/283657a0"},{"key":"e_1_3_5_7_1","volume-title":"Geology of the Area South of Lodwar: Degree Sheet 18, NE Quarter, with Coloured Geological Map(No. 87)","author":"Dodson R.G.","year":"1971","unstructured":"Dodson, R.G. 1971. Geology of the Area South of Lodwar: Degree Sheet 18, NE Quarter, with Coloured Geological Map(No. 87). Ministry of Natural Resources, Republic of Kenya."},{"key":"e_1_3_5_8_1","doi-asserted-by":"publisher","DOI":"10.1130\/0016-7606(1989)101<0885:TDOTWB>2.3.CO;2"},{"key":"e_1_3_5_9_1","doi-asserted-by":"publisher","DOI":"10.1007\/BF00251068"},{"key":"e_1_3_5_10_1","doi-asserted-by":"publisher","DOI":"10.1038\/27417"},{"key":"e_1_3_5_11_1","doi-asserted-by":"publisher","DOI":"10.1002\/2017TC004526"},{"key":"e_1_3_5_12_1","doi-asserted-by":"publisher","DOI":"10.7312\/leak11870-002"},{"key":"e_1_3_5_13_1","doi-asserted-by":"publisher","DOI":"10.1093\/petrology\/egh004"},{"key":"e_1_3_5_14_1","doi-asserted-by":"publisher","DOI":"10.1093\/petrology\/egl009"},{"key":"e_1_3_5_15_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00410-002-0396-z"},{"key":"e_1_3_5_16_1","doi-asserted-by":"publisher","DOI":"10.1130\/0091-7613(1998)026<0923:EMIEEF>2.3.CO;2"},{"key":"e_1_3_5_17_1","doi-asserted-by":"publisher","DOI":"10.1017\/S001675680300815X"},{"key":"e_1_3_5_18_1","doi-asserted-by":"publisher","DOI":"10.1016\/0040-1951(94)90187-2"},{"key":"e_1_3_5_19_1","doi-asserted-by":"publisher","DOI":"10.7312\/leak11870-012"},{"key":"e_1_3_5_20_1","doi-asserted-by":"publisher","DOI":"10.1080\/02724634.1996.10011339"},{"key":"e_1_3_5_21_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.marpetgeo.2017.12.005"},{"key":"e_1_3_5_22_1","doi-asserted-by":"publisher","DOI":"10.1017\/S0016756808005347"},{"key":"e_1_3_5_23_1","doi-asserted-by":"publisher","DOI":"10.1144\/gsjgs.156.4.0731"},{"key":"e_1_3_5_24_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0040-1951(97)00097-8"},{"key":"e_1_3_5_25_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.marpetgeo.2016.08.010"},{"key":"e_1_3_5_26_1","doi-asserted-by":"publisher","DOI":"10.1016\/0040-1951(94)90170-8"},{"key":"e_1_3_5_27_1","article-title":"Early syn-rift igneous dike patterns, northern Kenya Rift (Turkana, Kenya): Implications for local and regional stresses, tectonics and magma-structure interactions","volume":"16","author":"Morley C.K.","year":"2020","unstructured":"Morley, C.K. 2020. Early syn-rift igneous dike patterns, northern Kenya Rift (Turkana, Kenya): Implications for local and regional stresses, tectonics and magma-structure interactions. Tectonics, 16, doi.org\/10.1130\/GES02107.1","journal-title":"Tectonics"},{"key":"e_1_3_5_28_1","doi-asserted-by":"publisher","DOI":"10.1144\/gsjgs.149.3.0333"},{"key":"e_1_3_5_29_1","unstructured":"Morley C.K. Karanja F.M. Wescott W.A. Stone D.M. Harper R.M. Wigger S.T. and Day R.A. 1999. AAPG Studies in Geology# 44 Chapter 2: Geology and Geophysics of the Western Turkana Basins Kenya."},{"key":"e_1_3_5_30_1","doi-asserted-by":"publisher","DOI":"10.1130\/GES01375.1"},{"key":"e_1_3_5_31_1","doi-asserted-by":"publisher","DOI":"10.1144\/1354-079309-842"},{"key":"e_1_3_5_32_1","doi-asserted-by":"publisher","DOI":"10.1038\/226918a0"},{"key":"e_1_3_5_34_1","doi-asserted-by":"publisher","DOI":"10.1002\/gj.3339"},{"key":"e_1_3_5_35_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.lithos.2017.05.014"},{"key":"e_1_3_5_36_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.lithos.2019.105296"},{"key":"e_1_3_5_37_1","doi-asserted-by":"publisher","DOI":"10.1306\/05091918193"},{"key":"e_1_3_5_38_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.marpetgeo.2003.11.008"},{"key":"e_1_3_5_39_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.marpetgeo.2003.11.007"},{"key":"e_1_3_5_40_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jafrearsci.2012.06.007"},{"key":"e_1_3_5_41_1","first-page":"179","article-title":"Hydrocarbon prospectivity in Mesozoic and early-middle Cenozoic rift basins of central and northern Kenya, Eastern Africa","volume":"100","author":"Tiercelin J.-J.","year":"2012","unstructured":"Tiercelin, J.-J., Nalpas, T., Thuo, P. and Potdevin, J.-L. 2012b. Hydrocarbon prospectivity in Mesozoic and early-middle Cenozoic rift basins of central and northern Kenya, Eastern Africa. AAPG Memoir, 100, 179\u2013207.","journal-title":"AAPG Memoir"},{"key":"e_1_3_5_42_1","doi-asserted-by":"crossref","unstructured":"Vetel W. and Le Gall B. 2006. Dynamics of prolonged continental extension in magmatic rifts: the Turkana Rift case study (North Kenya). Geological Society London Special Publications 259 209\u2013233 https:\/\/doi.org\/10.1144\/GSL.SP.2006.259.01.17","DOI":"10.1144\/GSL.SP.2006.259.01.17"},{"key":"e_1_3_5_43_1","doi-asserted-by":"publisher","DOI":"10.1046\/j.1365-2117.2003.00227.x"},{"key":"e_1_3_5_45_1","doi-asserted-by":"publisher","DOI":"10.1046\/j.1365-2478.2003.00363.x"}],"container-title":["Journal of the Geological Society"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.lyellcollection.org\/doi\/pdf\/10.1144\/jgs2020-110","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2024,11,19]],"date-time":"2024-11-19T14:32:49Z","timestamp":1732026769000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.lyellcollection.org\/doi\/10.1144\/jgs2020-110"},"secondary":[{"URL":"https:\/\/geoscienceworld.org\/jgs\/article-lookup?doi=10.1144\/jgs2020-110","label":"geoscienceworld"}]},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2020,10,23]]},"references-count":41,"journal-issue":{"issue":"1","published-online":{"date-parts":[[2021,1,21]]},"published-print":{"date-parts":[[2021,1]]}},"alternative-id":["10.1144\/jgs2020-110"],"URL":"https:\/\/doi.org\/10.1144\/jgs2020-110","relation":{},"ISSN":["0016-7649","2041-479X"],"issn-type":[{"value":"0016-7649","type":"print"},{"value":"2041-479X","type":"electronic"}],"subject":[],"published":{"date-parts":[[2020,10,23]]},"assertion":[{"value":"2020-06-10","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2020-08-31","order":1,"name":"revised","label":"Revised","group":{"name":"publication_history","label":"Publication History"}},{"value":"2020-09-07","order":2,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2020-10-23","order":3,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}],"article-number":"jgs2020-110"}}