A Mesoproterozoic carbonate platform (lower Belt Supergroup of western North America): Sediments, facies, tides, tsunamis and earthquakes in a tectonically active intracratonic basin

Pratt, Brian R.; Rule, Roy

doi:10.1016/j.earscirev.2021.103626

Cited by 16 publications

(7 citation statements)

References 119 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Instead, many carbonate platform strata, when observed carefully in outcrop and especially when analyzed using robust quantitative methods, are more complex and noisier (Wilkinson et al ., 1999; Bosence et al ., 2009; Burgess, 2016). The complexity and noise may arise from processes such as tidal channel migration, storm erosion, slope instability, tsunami backwash and various biological activities, that are not modelled here, but can make strata effectively indistinguishable from random successions (Wanless, 1981; Cloyd et al ., 1990; Peper & Cloetingh, 1995; Bosence et al ., 2009; Samankassou & Enos, 2019; Pratt & Rule, 2021). Nevertheless, whenever strong evidence for ordered strata with only weak or no evidence for relative sea‐level forcing [for example, abnormal subaerial exposure of subtidal strata, see Lehrmann & Goldhammer (1999)], autogenic cyclicity due to self‐organization should always be considered as a possible explanation.…”

Section: Discussionmentioning

confidence: 99%

The stratigraphic significance of self‐organization: Exploring how autogenic processes can generate cyclical carbonate platform strata

Burgess

2022

Sedimentology

View full text Add to dashboard Cite

Autogenic spatial self‐organization can produce coherent patterns of ordered cyclical strata through interaction of system components, independent of initial conditions and without external forcing. Previous numerical modelling work that partially explored self‐organized cyclicity in carbonate strata is expanded, refined and tested using a different numerical model formulation of an existing carbonate forward model ‘CarboCAT’. Results show that cross‐platform sediment transport creates a series of self‐organized prograding islands and shorelines that generate upward‐shallowing autocycles, defined by strong statistical evidence for ordered facies successions. A subtidal factory in front of each shoreline supplies sediment that drives shoreline progradation and these subtidal supply‐zone widths are also self‐organized to an optimal characteristic width due to island progradation, such that an accommodation creation/sediment supply ratio of around one maintains self‐organized shoreline progradation. The resulting island progradation rate determines autocycle thickness, which is very different from the accommodation control assumed in most sequence stratigraphic and cyclostratigraphic interpretations. This self‐organization process is comparable to the reaction–diffusion model first suggested by Alan Turing. The simplest possible combination of processes that leads to self‐organization are water‐depth‐dependent production, straight long‐distance cross‐platform transport and uniform subsidence. Additional more complex processes can produce self‐organization, but also more diverse island morphologies, less ordered autocyclic strata and more variable lateral facies continuity. Exploration of the model parameter space shows that self‐organization occurs for only a limited range of accommodation creation/sediment supply ratios. The modelling is calibrated and checked for realism against shoreline progradation rates measured on the Peros Banhos carbonate platform, British Indian Ocean Territory, and a Holocene Abu Dhabi shoreline, suggesting that this is a realistic and perhaps ubiquitous process in geological history. Given the fundamental nature of processes modelled here, and the match with observed processes in modern depositional systems, it seems possible that similar autogenic, self‐organizing processes have operated on many carbonate platforms and are an important component in the stratigraphic record.

show abstract

Section: Discussionmentioning

confidence: 99%

The stratigraphic significance of self‐organization: Exploring how autogenic processes can generate cyclical carbonate platform strata

Burgess

2022

Sedimentology

View full text Add to dashboard Cite

show abstract

“…3). Pratt (2017Pratt ( , 2021 studied the mixed and disorderly tabular-pebbles depositing in Deadwood Formation of Upper Cambrian in the middle and northern parts of Montana, the United States. The tabular-pebbles, with lithology of thin-layer calcareous ne sandstone and silty mud shale, are interbedded with horizontal-lamina calcareous ne sandstone and silty mud shale.…”

Section: Tabular-pebblesmentioning

confidence: 99%

Earthquake sedimentary event record in Early Triassic in southeastern Sichuan Basin, SW China

Zeng

Zhang

2022

Preprint

View full text Add to dashboard Cite

There are some macroscopic and microscopic sedimentary structures of seismic events in the outcrops in Lower Triassic Feixianguan Fm (T1f). and Jialingjiang Fm (T1j). in southeastern parts of Sichuan Basin. The following basic types of sedimentary structures could be observed: Soft-sediment liquefied deformation structures include curled deformation (sliding deformation structure," sausage structure") and microscopic folds (laminated plastic deformation). Seismites emerge in T1f1 and T1f2 in Baimiaozi section, Beibei, Chongqing, while in T1j2 at Longdongwan, Xuyong, Sichuan, as well as the same strata at Xingwen, Sichuan and Xishui, Guizhou. The sedimentary sequences of seismites in outcrops are clear, presenting the whole process of paleoearthquake from strong to weak. The author argues that the Sanjiang tectonic belt represented by the evolution of Yidun arc in the western Sichuan had strong activities at the west margin of the upper Yangtze plate, which may be related to the formation of seismites in the early Triassic. Earthquake activities and volcanic eruption can be triggered in large areas by the plate collision and the subduction of oceanic crust in the Sanjiang tectonic belt.

show abstract

“…Some tabular blocks are disturbed by waves (tsunami) triggered by earthquake, redeposited, and then formed mussily accumulated tabular-pebbles after redeposition (Figure . 2g-h; Figure . 3). Pratt studied the mixed and disorderly tabular-pebbles depositing in Deadwood Formation of Upper Cambrian in the middle and northern parts of Montana, the United States [54,55]. The tabular-pebbles, with lithology of J Mari Scie Res Ocean, 2022 thin-layer calcareous fine sandstone and silty mud shale, are interbedded with horizontal-lamina calcareous fine sandstone and silty mud shale.…”

Section: Tabular-pebblesmentioning

confidence: 99%

Earthquake Sedimentary Event Record In Early Triassic In Southeastern Sichuan Basin, Sw China

2022

JMSRO

View full text Add to dashboard Cite

There are some macroscopic and microscopic sedimentary structures of seismic events in the outcrops in Lower Triassic Feixianguan Fm (T1 f). and Jialingjiang Fm (T1 j). in southeastern parts of Sichuan Basin. The following basic types of sedimentary structures could be observed: Soft-sediment liquefied deformation structures include curled deformation (sliding deformation structure," sausage structure") and microscopic folds (laminated plastic deformation). Seismites emerge in T1 f 1 and T1 f 2 in Baimiaozi section, Beibei, Chongqing, while in T1 j 2 at Longdongwan, Xuyong, Sichuan, as well as the same strata at Xingwen, Sichuan and Xishui, Guizhou. The sedimentary sequences of seismites in outcrops are clear, presenting the whole process of paleoearthquake from strong to weak. The author argues that the Sanjiang tectonic belt represented by the evolution of Yidun arc in the western Sichuan had strong activities at the west margin of the upper Yangtze plate, which may be related to the formation of seismites in the early Triassic. Earthquake activities and volcanic eruption can be triggered in large areas by the plate collision and the subduction of oceanic crust in the Sanjiang tectonic belt.

show abstract

A Mesoproterozoic carbonate platform (lower Belt Supergroup of western North America): Sediments, facies, tides, tsunamis and earthquakes in a tectonically active intracratonic basin

Cited by 16 publications

References 119 publications

The stratigraphic significance of self‐organization: Exploring how autogenic processes can generate cyclical carbonate platform strata

The stratigraphic significance of self‐organization: Exploring how autogenic processes can generate cyclical carbonate platform strata

Earthquake sedimentary event record in Early Triassic in southeastern Sichuan Basin, SW China

Earthquake Sedimentary Event Record In Early Triassic In Southeastern Sichuan Basin, Sw China

Contact Info

Product

Resources

About