Geomorphological evidence of carbonate build-up demise on equatorial margins: A case study from offshore northwest Australia

Tuyl, James Van; Alves, Tiago Marcos; Cherns, Lesley; Antonatos, Georgios; Burgess, Peter M.; Masiero, Isabella

doi:10.1016/j.marpetgeo.2019.03.006

Cited by 13 publications

(6 citation statements)

References 48 publications

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“…During the last few decades, seismic data analysis proved its applicability in the analysis of carbonate depositional systems, due to its ability to detect lateral facies' changes from massive organic buildups into surrounding stratified deposits, which are related to variations of the seismic reflection patterns or so-called lateral seismic facies changes (for more details see, e.g., [44]). Depositional features such as carbonate buildups can be often clearly visible on seismic data because of significant velocity and density contrasts between different lithological types of carbonate rocks (e.g., contrast between massive, reef limestones, bedded limestone and marls deposits), as evident from numerous recently published papers dedicated to different aspects of the seismic interpretation of carbonate buildups of different ages, and from various sedimentary basins (e.g., [37,38,[45][46][47][48][49][50][51][52][53]).…”

Section: Introductionmentioning

confidence: 99%

Seismic Characteristics and Development of the Upper Jurassic Carbonate Buildups from the Miechów Trough (Southern Poland)

Słonka

Krzywiec

2020

Geosciences

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The presented study is devoted to the subsurface Upper Jurassic carbonate buildups and surrounding stratified inter-buildup deposits in the hitherto less recognized area, in comparison with other parts of the northern Tethyan shelf in Poland and Europe. The study area is located within the present-day Miechów Trough, almost entirely covered by thick Cretaceous and younger deposits. This paper shows results of the interpretation of 2D seismic data, calibrated by data from deep wells. Investigation of various elements of the Upper Jurassic carbonate depositional system in the Miechów Trough is supported by seismic facies and attribute analysis. The four distinctive seismic facies—(A) bedded, (B) mound-shaped, (C) contorted-chaotic, and (D) chaotic—were assigned to the main Upper Jurassic sedimentary facies, represented by (1) bedded facies, (2) massive facies (carbonate buildups) and (3) deposits of gravity mass-flows. The results of this study were used to construct a depositional model for the Upper Jurassic succession, that focuses on the initiation, growth and demise of the large carbonate buildups in this part of the basin. This paper also presents the more extensive distribution of the Upper Jurassic carbonate buildups than was previously proposed for the Miechów Trough.

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Section: Introductionmentioning

confidence: 99%

Seismic Characteristics and Development of the Upper Jurassic Carbonate Buildups from the Miechów Trough (Southern Poland)

Słonka

Krzywiec

2020

Geosciences

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“…Several mechanisms for drowning have been proposed. These mechanisms can include insufficient autotrophic carbonate factories that cannot keep up with the relative sea-level rise ensuing from the eustatic sea-level increase and/or subsidence (DiCaprio et al, 2010), and environmental drivers, such as (volcano-) clastic and nutrient input, changes in salinity and biota, platform-margin collapse, climate variability (Weissert et al, 1998;Van Tuyl et al, 2019), and strong currents (Betzler et al, 2021). Mathematical models also indicate a combination of initial water depths and the response time of carbonate to an increase in eustatic sea-level rise as a cause of drowning (Kim et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Fragmentation, rafting, and drowning of a carbonate platform margin in a rift-basin setting

Petrovic

Lüdmann

Afifi

et al. 2023

Geology

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High-resolution bathymetric and shallow seismic data along the northeast Red Sea margin reveal a previously disregarded mechanism for carbonate platform drowning at a steep-flanked rift basin. At the seafloor, salt extrusions highlight the influence of extensional salt tectonics, with a salt flow from the southern flank of the Al Wajh carbonate platform that likely originates from below. Salt-flow direction, morphology, and kilometer-sized slumps and rotated blocks indicate platform-margin disintegration and rafting of platform blocks toward the southwest. The outlines of several smaller detached or semi-detached carbonate platforms to the south of the main platform can be refitted to the larger platform margin by counter-moving the direction of mass wasting. Several platforms, reaching heights above the seafloor of up to 650 m, are partially or fully submerged in the mesophotic zone and appear to be in danger of drowning. We conclude that the southern outer rim of the Al Wajh platform is breaking apart owing to salt withdrawal, which indicates that carbonate platforms on top of salt sequences grow on mobile ground, leading to platform disintegration, basinward rafts, and the demise of broken-off, smaller pieces of platform. Salt displacement also controls the growth geometries of individual platform rafts, with keep-up reef growth (growth rate equal to sea-level rise) and drowning occurring in close spatial proximity. Therefore, the interplay between salt diapirism and platform growth is not limited to platforms growing on the apexes of diapirs and is more complex than previously thought.

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“…1). This ramp evolved into a rimmed platf ( sensu Bosence, 2005) during the middle Miocene (Jones, 1973; Bradshaw et al ., 1988; Romine et al ., 1997; Young et al ., 2001; Collins, 2002; Gorter et al ., 2002; Cathro et al ., 2003; Power, 2008; Ryan et al ., 2009; Liu et al ., 2011; Rosleff‐Soerensen et al ., 2012, 2016; Saqab & Bourget, 2016; Belde et al ., 2017; Rankey, 2017; Tuyl et al ., 2018a,b; Anell & Wallace, 2019; Tuyl et al ., 2019; McCaffrey et al ., 2020). Whilst this transition is one of the largest Cenozoic ramp to rimmed platform transitions recognized [for example, compilation of major Phanerozoic reef trends by Kiessling (2001)], controlling factors remain the subject of debate.…”

Section: Introductionmentioning

confidence: 99%

Early Miocene carbonate ramp development in a warm ocean, North West Shelf, Australia

Riera

Bourget

Allan³

et al. 2021

Sedimentology

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Although carbonate ramps are widely described from the geological record, there is still a debate on the relative influence of water temperature, trophic conditions and type of carbonate factories on their development. The ca 2400 km long Australian North West Shelf is among the largest Cenozoic carbonate provinces worldwide, and records a transition from an early Miocene ramp to a middle Miocene rimmed platform. This change is observable on publicly available seismic data, giving the opportunity to investigate environmental influences on platform evolution. This study combines macroscopic and petrographic descriptions of early Miocene strata cropping out in the Cape Range Anticline (North West Cape, southern end of the North West Shelf) and of time‐equivalent well cuttings from the adjacent, offshore Exmouth Sub‐basin. Particular emphasis is placed on the identification of larger benthic foraminifera at a broad generic level, because differing taxa have a limited range of habitable conditions that serve as environmental proxies. The results show that early Miocene strata are dominantly composed of larger benthic foraminifera with minor coralline algae in the proximal platform, grading to micropackstones in the more distal platform. A ramp margin is inferred from the lithological data on the basis of the lack of framework builders and the presence of open oceanic indicators. Facies shallow upward through individual outcrops, with a proximal to distal trend towards the north‐west. These trends along outcrops are consistent with the seismic interpretations. Identification of taxa with warm, oligotrophic water affinity suggests that the ramp was formed in an oligotrophic and warm ocean, despite the absence of coral reefs. Changes of carbonate facies with depth do not seem to be associated with changes in ramp morphology, and the latter may have been controlled by physical oceanic parameters, such as offshore currents and waves.

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Geomorphological evidence of carbonate build-up demise on equatorial margins: A case study from offshore northwest Australia

Cited by 13 publications

References 48 publications

Seismic Characteristics and Development of the Upper Jurassic Carbonate Buildups from the Miechów Trough (Southern Poland)

Seismic Characteristics and Development of the Upper Jurassic Carbonate Buildups from the Miechów Trough (Southern Poland)

Fragmentation, rafting, and drowning of a carbonate platform margin in a rift-basin setting

Early Miocene carbonate ramp development in a warm ocean, North West Shelf, Australia

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