Paleoenvironmental analysis of the ichnogenus Zoophycos in the Lower Devonian tempestite sediments of the Longmenshan area, Sichuan, China

Li, Fengjie; Zhang, Hao; Xigui, Jing; Cheng, Xiaoyu

doi:10.1016/j.palaeo.2016.10.027

Cited by 11 publications

(2 citation statements)

References 38 publications

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“…3 Along with the rapid rise of the sea level in the TST stage, the supply of terrigenous materials is rapidly reduced, which is conducive to the rapid growth of biomes and the formation of bioclastic limestone. The Devonian Yangmaba Formation in Ganxi, Longmenshan area at low latitudes is in warm climatic conditions, 38 which is conducive to the massive growth of reef-building organisms such as corals and the formation of reefs. Located at a low latitude in Ganxi, Longmenshan area, the Middle Devonian is a greenhouse stage in history with a p CO 2 concentration of 900 ppm, 39 causing frequent storms and destroying the growth of reefs.…”

Section: Discussionmentioning

confidence: 99%

Analysis of Hybrid Facies, Hybrid Sequence, and Its Controlling Factors of the Devonian Yangmaba Formation in the Northwestern Sichuan Basin, Southern China

李凤杰

Yuan

Lin³

2021

ACS Omega

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Abundant hybrid sediments composed of clastic rocks and carbonate rocks were deposited in the Devonian Yangmaba Formation in the northwestern of Sichuan Basin. Based on the measurement of the Ganxi section in detail, combined with the observation of the 30 slices, the hybrid facies, and hybrid sequence, the hybrid deposit mechanism and its controlling factors of the Yangmaba Formation were analyzed. It shows that the hybrid facies consists of the hybrid shore at the lower and clastic hybrid shelf and carbonate hybrid shelf deposits at the middle-upper of the Yangmaba Formation. The hybrid sequence, which can be divided into four sedimentary system tracts: the shelf-margin systems tract (SMST), the transgressive system tract (TST), the early highstand systems tract (EHST), and the late highstand systems tract (LHST), was developed in the Yangmaba Formation. There are three hybrid mechanisms including punctuated mixing, facies mixing, and in situ mixing, and the first two are the main types in the Yangmaba Formation. The punctuated mixing and in situ mixing are the main hybrid mechanisms of hybrid shore and clastic hybrid shelf deposits, and the facies mixing is the main hybrid mechanism of clastic hybrid shelf and carbonate hybrid shelf deposits. The hybrid mechanisms are different among the system tracts: the punctuated mixing is the main mixing manner in the SMST and LHST and the facies mixing developed in the TST and EHST. Storm action is the most important controlling factor of punctuated mixing of the Yangmaba Formation. Relative sea level change, carbonate productivity or the rate of terrestrial clastic supply, and climate change are factors that control and affect hybrid deposits. SMST and HST are mainly related to changes in the relative sea level, while TST is controlled by sedimentary source recharge, and climate change affects the hybrid action of system tracts to varying degrees.

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Section: Discussionmentioning

confidence: 99%

Analysis of Hybrid Facies, Hybrid Sequence, and Its Controlling Factors of the Devonian Yangmaba Formation in the Northwestern Sichuan Basin, Southern China

李凤杰

Yuan

Lin³

2021

ACS Omega

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“…Les dépôts à stratification entrecroisée en feston sont dérivés de la superposition d'ensembles de courbures des lamines lors de la migration estuarienne et du chenal de marée ; ils sont également associés aux rythmes de plages et de rivages énergétiques (Cojan et Renard 2008). La présence de ces structures entrecroisées suggèrent un milieu marin peu profond caractérisé par des vagues d'orage d'activités périodiques apparentées aux dish structures (Cojan et Thiry, 1992;Cojan et Renard 2008;Li et al, 2017). Lowe et Lo Piccolo (1974) considèrent les dish structures comme des caractéristiques secondaires produites lors de la déshydratation progressive de lits rapides ou sousconsolidés.…”

Section: Interprétation Environnementaleunclassified

Structures Sédimentaires et Ichnofossiles des Formations du Crétacé Supérieur Sommital et du Tertiaire du Bassin Sud-Ouest de la Côte d’Ivoire : Intérêt Paléoenvironnemental

Amalaman¹,

Djeya²,

Douzo³

et al. 2019

ESJ

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Cliffs of Fresco located southwestern part of ivorian coastal basin are subjet of this study. Lithostratigraphy of upper Cretaceous and Tertiary series were reviewed from the five (5) surveyed, described and daded. This aimed to define the dynamics of an environment (at a time), based on identification and interpretation of sedimentary figures and ichnofossils. A proposed synthesis description allowed to deduce paleoenvironmental interest of analyzed deposits. 44 samples taken from the five (5) cliffs sections upported this study. The lithology indicates a dominant clay and sand sedimentation with intercalations of sandstone and glaucanious and phosphated limestone. Sedimentary structures described are of various types. These figures appear as forms built by a fluid flow action, produced by asymmetrical wrinkles and dunes. They result from mass transport (slumping, casting) and turbidity flow; The stratifications are various shapes : intertwined, fishbone and tabular, dish structures, flasers and lenticulars beddings. Deformation imprints produced after deposition and before consolidation have been identified by load figures, sedimentary structures are good stratigraphic criteria and good indicators of the direction of flow. These ichnofossils are post-depositional event and occur in a variety of environments, from continental to marine. They are generally associated with coastal margins and shallow marine environments.

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Early Cretaceous shifting of Zoophycos in the Ouarsenis Mountains (northwestern Algeria)

Bouchemla,

Zhang,

Benyoucef

et al. 2023

Journal of Palaeogeography

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Paleoenvironmental analysis of the ichnogenus Zoophycos in the Lower Devonian tempestite sediments of the Longmenshan area, Sichuan, China

Cited by 11 publications

References 38 publications

Analysis of Hybrid Facies, Hybrid Sequence, and Its Controlling Factors of the Devonian Yangmaba Formation in the Northwestern Sichuan Basin, Southern China

Analysis of Hybrid Facies, Hybrid Sequence, and Its Controlling Factors of the Devonian Yangmaba Formation in the Northwestern Sichuan Basin, Southern China

Structures Sédimentaires et Ichnofossiles des Formations du Crétacé Supérieur Sommital et du Tertiaire du Bassin Sud-Ouest de la Côte d’Ivoire : Intérêt Paléoenvironnemental

Early Cretaceous shifting of Zoophycos in the Ouarsenis Mountains (northwestern Algeria)

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