{"refrec":{"BRefID":361553,"RR":"<b>Doubrawa, M.; Stassen, P.; Robinson, M.M.; Babila, T.L.; Zachos, J.C.; Speijer, R.P.</b> (2022). Shelf ecosystems along the US Atlantic Coastal Plain prior to and during the Paleocene-Eocene Thermal Maximum: insights into the stratigraphic architecture. <i>Paleoceanography and Paleoclimatology 37(10)</i>: e2022PA004475. <a href=\"https://dx.doi.org/10.1029/2022PA004475\" target=\"_blank\">https://dx.doi.org/10.1029/2022PA004475</a>","BEntID":359269,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":0,"RefStringPartII":". <i>Paleoceanography and Paleoclimatology 37(10)</i>: e2022PA004475. <a href=\"https://dx.doi.org/10.1029/2022PA004475\" target=\"_blank\">https://dx.doi.org/10.1029/2022PA004475</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Doubrawa, M.; Stassen, P.; Robinson, M.M.; Babila, T.L.; Zachos, J.C.; Speijer, R.P.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Doubrawa, M. <i>et al.</i>","Englishabstract":"The Paleocene-Eocene Thermal Maximum (PETM) is the most pronounced global warming event of the early Paleogene related to atmospheric CO<sub>2</sub> increases. It is characterized by negative δ<sup>18</sup>O and δ<sup>13</sup>C excursions recorded in sedimentary archives and a transient disruption of the marine biosphere. Sites from the U.S. Atlantic Coastal Plain show an additional small, but distinct δ<sup>13</sup>C excursion below the onset of the PETM, coined the “pre-onset excursion” (POE), mimicking the PETM-forced environmental perturbations. This study focuses on the South Dover Bridge core in Maryland, where the Paleocene-Eocene transition is stratigraphically constrained by calcareous nannoplankton and stable isotope data, and in which the POE is well-expressed. The site was situated in a middle neritic marine shelf setting near a major outflow of the paleo-Potomac River system. We generated high-resolution benthic foraminiferal assemblage, stable isotope, trace-metal, grain-size and clay mineralogy data. The resulting stratigraphic subdivision of this Paleocene-Eocene transition is placed within a depth transect across the paleoshelf, highlighting that the PETM sequence is relatively expanded. The geochemical records provide detailed insights into the paleoenvironment, developing from a well-oxygenated water column in latest Paleocene to a PETM-ecosystem under severe biotic stress-conditions, with shifts in food supply and temperature, and under dysoxic bottom waters in a more river-dominated setting. Environmental changes started in the latest Paleocene and culminated atthe onset of the PETM, hinting to an intensifying trigger rather than to an instantaneous event at the Paleocene-Eocene boundary toppling the global system.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Shelf ecosystems along the US Atlantic Coastal Plain prior to and during the Paleocene-Eocene Thermal Maximum: insights into the stratigraphic architecture","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2024-12-10 01:33:17.368041","timezone_type":1,"timezone":"+01:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"Paleocene-Eocene Thermal Maximum (PETM); pre-onset excursion (POE); shelf ecosystem; benthic foraminifera; South Dover Bridge; stratigraphy","OtherDescriptors":null,"Notes":null,"AnaPub":2022,"MonPub":null,"DateUpdate":"2023-02-28","DateCreate":"2023-02-27","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000864686700001","VABBcode":null,"OpenAcc":0,"DOI":"10.1029/2022PA004475"},"refs":null,"anarec":{"AnaID":361553,"PubliDate":2022,"Pagination":"e2022PA004475","XtraPublOfAnaID":null,"ISBN":null,"Volume":"37","Issue":"10","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":292301,"SerRR":"Paleoceanography and Paleoclimatology. 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