{"refrec":{"BRefID":349359,"RR":"<b>Vasiliev, I.; van der Meer, M.T.J.; Stoica, M.; Krijgsman, W.; Reichart, G.-J.; Lazarev, S.; Butiseaca, G.A.; Niedermeyer, E.M.; Aliyeva, E.; van Baak, C.G.C.; Mulch, A.</b> (2022). Biomarkers reveal two paramount Pliocene-Pleistocene connectivity events in the Caspian Sea Basin. <i>Palaeogeogr. Palaeoclimatol. Palaeoecol. 587</i>: 110802. <a href=\"https://dx.doi.org/10.1016/j.palaeo.2021.110802\" target=\"_blank\">https://dx.doi.org/10.1016/j.palaeo.2021.110802</a>","BEntID":347054,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>Palaeogeogr. Palaeoclimatol. Palaeoecol. 587</i>: 110802. <a href=\"https://dx.doi.org/10.1016/j.palaeo.2021.110802\" target=\"_blank\">https://dx.doi.org/10.1016/j.palaeo.2021.110802</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Vasiliev, I.; van der Meer, M.T.J.; Stoica, M.; Krijgsman, W.; Reichart, G.-J.; Lazarev, S.; Butiseaca, G.A.; Niedermeyer, E.M.; Aliyeva, E.; van Baak, C.G.C.; Mulch, A.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Vasiliev, I. <i>et al.</i>","Englishabstract":"<p>    Landlocked basins like the Caspian Sea are highly sensitive to changes in    their hydrological budget, especially at times of disconnection from the    global ocean. Here, we reconstruct the Pliocene to Pleistocene    palaeohydrological and palaeoenvironmental changes occurring in the South    Caspian Basin between ~3.6 and ~ 1.9 Ma, using compound-specific hydrogen    isotope (δ</p><sup>2</sup><p>    H) data on long chain</p><i>n</i><p>    -alkanes and alkenones. Additionally, we established a record of mean    annual air temperature (MAT) and the source of organic matter, based on the    relative distribution of branched and isoprenoid glycerol dialkyl glycerol    tetraethers (BIT). The ~55‰ variation in the δ</p><sup>2</sup><p>    H measured on the terrestrial plant long chain</p><i>n</i><p>    -alkanes indicates significant continental hydrological changes in the    region surrounding the Caspian Sea over the investigated 1.7 Myr interval.    The MAT and BIT data show that the so-called Akchagylian marine incursion    at around 2.75 Ma, marked by influx of marine biota into the Caspian Basin,    originated from a cold region of the open ocean, endorsing a hydrological    connection with the Arctic domain. The onset of the regional Apsheronian    stage at ~2.13 Ma, identified by the invasion of</p><i>Tyrrhenocythere</i><p>    sp. ostracods, coincided with a change towards constant δ</p><sup>2</sup><p>    H</p><i><sub>n</sub></i><sub>-alkane</sub><p>    and is shortly followed by the occurrence of alkenones in the Caspian    Basin. The relative distributions of alkenones and their δ</p><sup>2</sup><p>    H values indicate that a connection with a saline basin, most likely the    Black Sea, was established at the Akchagylian–Apsheronian transition</p>","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Biomarkers reveal two paramount Pliocene-Pleistocene connectivity events in the Caspian Sea Basin","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-06-10 01:32:41.213437","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"South Caspian Basin; Pleistocene; Hydrogen isotopes; Palaeohydrology; N-alkanes; Akchagylian marine incursion; Black Sea influx","OtherDescriptors":null,"Notes":null,"AnaPub":2022,"MonPub":null,"DateUpdate":"2022-03-30","DateCreate":"2022-01-27","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000737215100003","VABBcode":null,"OpenAcc":1,"DOI":"10.1016/j.palaeo.2021.110802"},"refs":null,"anarec":{"AnaID":349359,"PubliDate":2022,"Pagination":"110802","XtraPublOfAnaID":null,"ISBN":null,"Volume":"587","Issue":null,"BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":43483,"SerRR":"Palaeogeography, Palaeoclimatology, Palaeoecology. 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