Depositional conditions and organic matter preservation pathways in an epicontinental environment: the Upper Jurassic Kashpir Oil Shales (Volga Basin, Russia)

Riboulleau, Armelle; Baudin, François; Deconinck, Jean‐François; Derenne, Sylvie; Largeau, Claude; Tribovillard, Nicolas

doi:10.1016/s0031-0182(03)00460-7

Cited by 64 publications

(30 citation statements)

References 58 publications

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“…Paleoenvironments within the studied area have been characterized by Jasamanov (1978) and later by Riboulleau et al (1998Riboulleau et al ( , 2003, Hantzpergue et al (1998) and Vishnevskaya et al (1999). The Interior Russian Sea was generally relatively shallow (Jasamanov 1978), although an alternation of shallow-water and deep-water environments is proposed by Vishnevskaya et al (1999).…”

Section: Introductionmentioning

confidence: 85%

“…The curve of the oxygen-isotopic paleotemperatures for low-latitude sea-water by Condie and Sloan (1998) demonstrates a minor, but long-term warming. The regional data from the Russian Platform provide evidence for warming (Jasamanov 1978;Riboulleau et al 2003). The recent studies of the parasequence architecture of the Adriatic Platform provide clear evidence for the "hot global greenhouse" in the Tithonian (Husinec and Read 2007).…”

Section: Latest Jurassic Sea-level Oscillationsmentioning

confidence: 99%

“…comm.). The regional strength in aridity (aridization) is also recorded by clay mineralogy (Riboulleau et al 2003). An interesting phenomenon was oxygen depletion, which occurred periodically within the studied region during the Late Jurassic Vishnevskaya et al 1999;Riboulleau et al 2003).…”

Section: Introductionmentioning

confidence: 99%

“…The regional strength in aridity (aridization) is also recorded by clay mineralogy (Riboulleau et al 2003). An interesting phenomenon was oxygen depletion, which occurred periodically within the studied region during the Late Jurassic Vishnevskaya et al 1999;Riboulleau et al 2003). Paleobiogeographically, the Uljanovsk-Saratov Basin lay at a transition between the Boreal and Tethyan Realms (Westermann 2000), which is supported by the available paleontological data (Rogov et al 2006).…”

Section: Introductionmentioning

confidence: 99%

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Kimmeridgian-Tithonian sea-level fluctuations in the Uljanovsk-Saratov Basin (Russian Platform)

Zorina¹,

Ruban²

2007

Central European Geology

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The Uljanovsk-Saratov Basin, located in the southeast of the Russian Platform, presents an intriguing record of the Kimmeridgian-Tithonian sea-level fluctuations. In the Late Jurassic, this basin was a trough within the Interior Russian Sea. The data available from both outcrops and boreholes have permitted outlining a number of lithostratigraphic units and regional hiatuses in the northeastern segment of the Uljanovsk-Saratov Basin, thus permitting a precise reconstruction of transgressions/regressions and deepenings/ shallowings. In total, three transgressive-regressive cycles and two deepening pulses have been established. These regionally documented changes were both related in part to global eustatic changes, and they also corresponded in part to the regional sea-level changes in some basins of Western Europe and Northern Africa, but not to those of the Arabian Platform. Differences observed between the global and regional curves as well as rapid Tithonian sealevel oscillations are explained by the influences of tectonic activity. It is hypothesized that the regional Tithonian oxygen depletion might have been a consequence from the rapid flooding of a densely vegetated land.

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Section: Introductionmentioning

confidence: 85%

Section: Latest Jurassic Sea-level Oscillationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Kimmeridgian-Tithonian sea-level fluctuations in the Uljanovsk-Saratov Basin (Russian Platform)

Zorina¹,

Ruban²

2007

Central European Geology

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“…The Or-WFA is likely to be similar to the orange AOM in morphology under transmitted light microscope, and therefore, it is possibly vulcanization-type AOM originated from marine phytoplankton. Riboulleau et al (2003) divided the orange AOM into two types, heterogenous and pure orange AOM, according to their inner texture. The Or-WFA in the Meishan sediments resemble to pure orange AOM.…”

Section: Palynofacies Analysismentioning

confidence: 99%

Kerogen morphology and geochemistry at the Permian–Triassic transition in the Meishan section, South China: Implication for paleoenvironmental variation

Sawada

Kaiho

Okano

2012

Journal of Asian Earth Sciences

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Abstract:Detailed fluorescent microscopic observations and organic geochemical analyses for insoluble sedimentary organic matter (kerogens) are conducted on the end-Permian to earliest Triassic sediments in the Meishan section A of South China. The main objectives of the present study are to reconstruct variations of marine and terrestrial environments, and to evaluate bulk characteristics of terrestrial input in the palaeo-Tethys ocean for the Permian -Triassic boundary (PTB). Most of kerogens in the Meishan section are mainly composed of marine algae-derived amorphous organic matter, while terrestrial plant-derived amorphous organic matter is remarkably dominant in the mass extinction horizon reported previously. The relative abundances of marine organic matter may vary depending on marine production rather than terrestrial input in the palaeo-Tethys associated with changing terrestrial vegetation. We also identified aromatic furans as major compounds in kerogen pyrolysate of all layers. It is possible that sources of aromatic furans with alkyl group, fungi and lichen, proliferated as disaster biota in terrestrial ecosystem through the PTB. Higher abundances of herbaceous organic matter are observed in the layers above the mass extinction horizon. However, the conifer biomarker retene can be identified in kerogen pyrolysates of all layers. These results imply that the productions of herbaceous plants increased as dominant pioneer biota in early stage of recovery for terrestrial ecosystem after its collapse, but also that woody plant potentially continued to be produced in land area throughout the end-Permian and earliest-Triassic.

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Multi‐elemental chemostratigraphy of Triassic mudstones in eastern Svalbard: Implications for source rock formation in front of the World’s largest delta plain

Wesenlund

Grundvåg

Engelschiøn

et al. 2022

The Depositional Record

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The Triassic Boreal Ocean was a shallow epicontinental basin and the sink of the World's largest delta plain known to date. Nutrient and freshwater supply from this delta have been regarded as important causes for high productivity and water mass stratification, forming Middle Triassic oil‐prone source rocks. Recent studies attribute upwelling and a productivity‐induced oxygen minimum zone as important factors. A multi‐elemental chemostratigraphic study of a Spathian–Carnian mudstone succession exposed in eastern Svalbard was performed to investigate their formation. This includes 89 samples from three localities, from which 34 elements were acquired using combustion and X‐ray fluorescence analyses. The goal is to provide a correlation framework and infer the role of productivity, redox and water mass restriction on organic matter accumulation and source rock formation. These processes had major impact on the source potential. The Spathian Vendomdalen Member suggests deposition during intermittent benthic euxinia and low productivity, corresponding with a reported deep thermocline that obstructed upwelling. The lower Anisian lower–middle Muen Member shows negligible enrichment in redox‐sensitive elements but in situ phosphate nodules, consistent with developing upwelling and moderate productivity. The middle Anisian upper Muen Member formed during high productivity and phosphogenesis and is linked with basin‐wide upwelling. Productivity, phosphate and redox proxies are all strongly enriched in the upper Anisian–Ladinian Blanknuten Member. In the south‐western Barents Sea, the pro‐deltaic environment of the emerging Triassic Boreal Ocean delta system had terminated these conditions. The upper Ladinian upper Blanknuten Member formed within intermittent euxinic bottom waters due to the shallowing sea level. The Carnian Tschermakfjellet Formation marks the dominance of the prograding delta system and the end of Triassic oil‐prone source rock formation in Svalbard.

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Depositional conditions and organic matter preservation pathways in an epicontinental environment: the Upper Jurassic Kashpir Oil Shales (Volga Basin, Russia)

Cited by 64 publications

References 58 publications

Kimmeridgian-Tithonian sea-level fluctuations in the Uljanovsk-Saratov Basin (Russian Platform)

Kimmeridgian-Tithonian sea-level fluctuations in the Uljanovsk-Saratov Basin (Russian Platform)

Kerogen morphology and geochemistry at the Permian–Triassic transition in the Meishan section, South China: Implication for paleoenvironmental variation

Multi‐elemental chemostratigraphy of Triassic mudstones in eastern Svalbard: Implications for source rock formation in front of the World’s largest delta plain

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