Late Pliocene sedimentation in Lake Baikal: implications for climatic and tectonic change in SE Siberia

Müller, Juliane; Oberhänsli, Hedi; Melles, Martin; Schwab, Markus J.; Rachold, Volker; Hubberten, Hans‐Wolfgang

doi:10.1016/s0031-0182(01)00320-0

Cited by 38 publications

(26 citation statements)

References 58 publications

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“…This was interpreted to refl ect the intensifi ed weathering of the East Asian continent, as related to tectonic and climate processes around the HimalayanTibetan Complex and consistent with studies in Lake Baikal (e.g. Müller et al, 2001). Given its location in the southern extension of the Boso Peninsula, the Ananai Formation may contain key strata which help to understand the origin and development of the nutrient-rich surface waters during this period.…”

supporting

confidence: 78%

Muroto Project: Scientifi c Drilling of the Late Pliocene Forearc Basin Deposit on the West Coast of Muroto Peninsula, Shikoku, Japan

2006

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supporting

confidence: 78%

Muroto Project: Scientifi c Drilling of the Late Pliocene Forearc Basin Deposit on the West Coast of Muroto Peninsula, Shikoku, Japan

2006

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“…Major and minor elements are an effective tool to trace lithofacies changes within a sedimentary succession which may best be visualized by chemical downhole plots or chemologs (Dypvik and Harris 2001;Jarvis et al 2001;Müller et al 2001). For almost 75% of the stratigraphic sections under study, Al, Si, and Ti get together with a striking first-order maximum around the K/P boundary and a second-order maximum during the lower Campanian caused by enrichments of phyllosilicates (Fig.…”

Section: Chemical Trends and Paleogeographymentioning

confidence: 99%

Paleontological, mineralogical and chemical studies of syngenetic and epigenetic Pb–Zn–Ba–P mineralizations at the stratotype of the K/P boundary (El Kef area, Tunisia)

Dill

Weiss

Botz

et al. 2010

Int J Earth Sci (Geol Rundsch)

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The El Kef area, Tunisia, is host of the official stratotype of the K/P boundary and of a complex metallic and non-metallic mineralization at Djebel Sekarna, encompassing syn(dia)genetic shale-and carbonate-hosted Zn-P and epigenetic Pb-Zn-Ba ore mineralizations. Micropaleontological, geological, mineralogical, and chemical studies (major and minor elements, C-and O-isotopes) of Upper Santonian to Lower Eocene calcareoussiliciclastic sediments resulted in a subdivision of this mineralization into eight mineralizing stages. Stages 1 and 2 (late Cretaceous-early Paleogene) are representative of syn(diagenetic) shale-and carbonate-hosted sulfidic and siliceous (Fe)-Zn-P mineralization deposited in shallow marine to slightly brackish sediments. Stages 3-5 (early Eocene respectively-pre-and post-Nummulites involutusexilis zones) are representatives of epigenetic sulfidic and sulfatic (Fe)-Zn-Pb-Ba mineralizations at temperatures as high as 170/200°C and stages 6 and 7 (early Eocene respectively-post-Alveolina oblonga zone) cover the nonsulfidic Zn-(Pb) mineralization at temperatures as high as 60°C which is transitional from hypogene into supergene mineralization (''epithermal calamine deposits''). Stage 8 represents alteration of the pre-existing mineral assemblages in course of the Holocene weathering. The Cretaceous through Paleogene aquatic system is characterized by a poisoning of the sea with base metals, mainly Zn, and the atmosphere was chocked with clouds of fine-grained volcanic ejecta. Both processes contributed to the build-up of Zn-(Pb) deposits and vast, but uneconomic bentonitic clay deposits around the K/P boundary. Ore mineralization in the El Kef area is a multiple-phase process which reached its climax during the early Eocene as indicated by the large foram zones. These inorganic concentration processes resulting in the formation of mineral deposits had obviously also a negative effect on the long-term course of regional Earth's biological history during the late Cretaceous-early Eocene period with lethal consequences for some species. The joint studies of inorganic and organic data reveal that such extraordinary metallogenetic processes close to the K/P boundary in its stratotype area in Tunisia were ''strictly terrestrial''.

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“…Thus, the arboreal adaptation recognized in the postcrania of Parapresbytis is congruent with the paleoenvironment of the localities. Müller et al (2001) estimated climate changes in the Lake Baikal area using mineralogical contents and the relative amounts of diatoms in drilling cores from sediments of the lake. They concluded that a major climatic change occurred at 2.65 Ma and that the climate of the area was warmer and more humid before the change.…”

Section: Paleoenvironment and Arboreal Adaptation Of Parapresbytismentioning

confidence: 99%

Distal humerus and ulna of Parapresbytis (Colobinae) from the Pliocene of Russia and Mongolia: phylogenetic and ecological implications based on elbow morphology

Egi

Nakatsukasa

Калмыков

et al. 2007

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Parapresbytis eohanuman is a colobine known from two middle Pliocene localities southeast of Lake Baikal, northern East Asia. This study examined the morphology of postcranial specimens, a distal humerus and an ulna, of Parapresbytis. A total of 18 and 13 linear measurements were taken from the humerus and the ulna, respectively, and compared with those of extant and European fossil colobines using principal components analysis. The distal humeral specimen of Parapresbytis is slightly larger than those of male Semnopithecus and Nasalis, while the ulnar specimen is much larger than those of extant colobines and is nearly as large as that of a male Papio ursinus. Morphologically, the distal humeri and ulnae of terrestrial colobines such as Semnopithecus, Dolichopithecus, and Mesopithecus can be distinguished from those of arboreal colobines. The morphology of the Parapresbytis elbow is within the range of the arboreal colobines, contradicting previous suggestions that this genus is terrestrially adapted and is phylogenetically close to Dolichopithecus. Because the arboreally adapted elbow is shared by most extant colobines, the morphology of the elbow does not provide evidence for phylogenetic proximity between Parapresbytis and a particular taxon of arboreal colobine such as Rhinopithecus. The elbow morphology suggests that Parapresbytis was adapted to arboreal locomotion as much as the extant arboreal colobines are. This is congruent with the paleoenvironmental evidence, which indicates the presence of forests in the Lake Baikal area during the middle Pliocene.

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Late Pliocene sedimentation in Lake Baikal: implications for climatic and tectonic change in SE Siberia

Cited by 38 publications

References 58 publications

Muroto Project: Scientifi c Drilling of the Late Pliocene Forearc Basin Deposit on the West Coast of Muroto Peninsula, Shikoku, Japan

Muroto Project: Scientifi c Drilling of the Late Pliocene Forearc Basin Deposit on the West Coast of Muroto Peninsula, Shikoku, Japan

Paleontological, mineralogical and chemical studies of syngenetic and epigenetic Pb–Zn–Ba–P mineralizations at the stratotype of the K/P boundary (El Kef area, Tunisia)

Distal humerus and ulna of Parapresbytis (Colobinae) from the Pliocene of Russia and Mongolia: phylogenetic and ecological implications based on elbow morphology

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