Episodic kilometre-scale burial and exhumation and the importance of missing section

Green, Paul; Duddy, Ian R.; Japsen, Peter

doi:10.1016/j.earscirev.2022.104226

Cited by 11 publications

(6 citation statements)

References 189 publications

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“…The latter of these hypotheses requires epeirogenic movement of the crust before and after rifting [147]. These movements allow the topography of the landscape to be regularly rejuvenated following erosion to near-sea level [147]. Thermal history models from studies reviewed in this work highlight such movement, while supporting evidence has been found in sonic velocity anomalies offshore [152], large sedimentary wedges deposited over short timescales [153], and interpretations of low relief high elevation landscapes [154].…”

Section: Prerift History Of the Ne Atlanticsupporting

confidence: 58%

“…However, these interpretations differ significantly from a variety of other studies, especially those that highlight multiple episodes of rock uplift and burial across the NE Atlantic during the post-rift stage [16,95,108,114,120,122,146]. This set of interpretations is heavily underpinned by thermal history models which resolve multiple periods of cooling and heating interpreted as exhumation and burial of the landscape [95,147]. It is important we state that AFT age and MTL values alone cannot be used to determine the number of cooling or heating phases a sample has experienced and, therefore, it is understandable that these differences are apparent.…”

Section: Prerift History Of the Ne Atlanticmentioning

confidence: 83%

“…There are localities where specific geological phenomena dominate the thermal history of the upper crust (e.g., Kangerlussuaq, Lofoten, Northern, and Western Svalbard), though large portions of the crystalline bedrock across Fennoscandia, East Greenland, and Northern Britain consistently present of Mesozoic AFT ages and intermediate MTL values. From the presentation of literature in previous sections, it is clear there exist two prominent hypotheses to explain this consistency of data distribution: (i) protracted exhumation of bedrock during extension [96] and (ii) a multi-phase history of rock burial, rock uplift, and erosion throughout the Mesozoic and Cenozoic [147]. It is unlikely that both explanations can co-exist in much of the NE Atlantic, therefore both hypotheses are evaluated below.…”

Section: Prerift History Of the Ne Atlanticmentioning

confidence: 98%

Section: Prerift History Of the Ne Atlanticmentioning

confidence: 99%

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Compilation of Apatite Fission-Track Data from the Northeast Atlantic Realm: A Jigsaw Puzzle with Missing Pieces

Jess,

Gröger,

Hendriks

et al. 2024

Lithosphere

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The northeast (NE) Atlantic is one of the best-studied geological regions in the world, incorporating a wide array of geological phenomena including extensional tectonism, passive margin development, orogenesis, and breakup-related volcanism. Apatite fission-track (AFT) thermochronology has been an important tool in studying the onshore evolution of the NE Atlantic for several decades. Unfortunately, large regional-scale studies are rare, making it difficult to study geological processes across the whole region. In this work, a compilation of published AFT data is presented from across Fennoscandia, the British Isles, East Greenland, and Svalbard, with the goal of providing an accessible overview of the data and how this vast body of work has improved our understanding of the region’s evolution. Alongside a review of previous literature, interpolated maps of fission track age and mean track length (MTL) highlight regional trends in the data that may result from major first-order processes and areas of low sample density that should be targeted for future study. Additionally, in the absence of metadata required for thermal history modeling, apparent exhumation rate estimates are calculated from available elevation profiles and the timing of major exhumation events inferred from “boomerang plots” of fission track ages against MTL values. Across Fennoscandia, data suggests that the opening of the NE Atlantic and exhumation of the margin have clearly played a major role in the thermal history of the upper crust. The remaining areas of Britain, Ireland, East Greenland, and Svalbard all present more complex trends consistent with a combination of the NE Atlantic’s opening and the interplay between specific bedrock geology of sampling sites and localized geological processes. Areas of low sample density include southern Britain, NE Britain, southeast Greenland, southern Svalbard, and Eastern Fennoscandia, each of which provides the natural laboratory required to answer many unresolved questions.

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Section: Prerift History Of the Ne Atlanticsupporting

confidence: 58%

Section: Prerift History Of the Ne Atlanticmentioning

confidence: 83%

Section: Prerift History Of the Ne Atlanticmentioning

confidence: 98%

Section: Prerift History Of the Ne Atlanticmentioning

confidence: 99%

See 2 more Smart Citations

Compilation of Apatite Fission-Track Data from the Northeast Atlantic Realm: A Jigsaw Puzzle with Missing Pieces

Jess,

Gröger,

Hendriks

et al. 2024

Lithosphere

View full text Add to dashboard Cite

show abstract

“…Estimating geological events taking place during the time interval encompassed by unconformities is a well‐known challenge (Green et al., 2022) and this is clearly relevant for the SCJ basin, where large (angular) unconformities are the rule rather than the exception. Low‐Temperature Thermochronology (LTT) has proven to be a very powerful tool to unravel downward and upward vertical movements during these stratigraphic gaps.…”

Section: Vertical Movements: Inferences From Low Temperature Thermoch...mentioning

confidence: 99%

Architecture and Evolution of the Southern Chotts‐Jeffara Basin, Tunisia

Bruna,

Bertotti,

Charton

et al. 2023

Tectonics

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Southern Tunisia is known to be less deformed and simpler than its neighboring Atlassic domain to the north. This area is complex and basin evolution in the Southern Chotts‐Jeffara (SCJ) basin is debated. In this paper we combined surface and subsurface data with low temperature thermochronology (LTT) to reinvestigate the tectono‐sedimentary evolution of the SCJ basin from Permian to Jurassic. We reconstruct the present‐day architecture of the SCJ basin along two regional sections. In these sections, we focused mainly on regional thickness variations and on internal reflections interpreted from seismic data. We observe three structural elements: (a) A Paleozoic culmination, oriented E‐W, capped by Mid‐Upper Triassic deposits; (b) the Tebaga of Medenine (ToM), a culmination also oriented E‐W but located ∼50 km north of the Paleozoic culmination; and (c) A Triassic culmination in the eastern part of the area, oriented NW‐SE. We note the absence of major normal faults along the sections. The LTT data we present are the first published in this area and allow to reconstruct the timing and magnitude of vertical movements. These data prove: (a) exhumation at ∼230 Ma of the Permian and Lower Triassic units associated with the onset of the ToM removing locally about 900 m of pre‐Cretaceous sediments; and (b) the development of the Triassic culmination ∼180 Ma removing 2000 m of pre‐Cretaceous sediments in the Jebel Rehach. This study demonstrates that vertical movements in the SCJ basin are controlled by long‐wavelength processes developed essentially in shortening regimes.

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Denudation history of the Great Escarpment in the southwestern flank of the Angola (Bié) Dome, Africa

Silva

Souza

Hiruma

et al. 2022

Int J Earth Sci (Geol Rundsch)

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Episodic kilometre-scale burial and exhumation and the importance of missing section

Cited by 11 publications

References 189 publications

Compilation of Apatite Fission-Track Data from the Northeast Atlantic Realm: A Jigsaw Puzzle with Missing Pieces

Compilation of Apatite Fission-Track Data from the Northeast Atlantic Realm: A Jigsaw Puzzle with Missing Pieces

Architecture and Evolution of the Southern Chotts‐Jeffara Basin, Tunisia

Denudation history of the Great Escarpment in the southwestern flank of the Angola (Bié) Dome, Africa

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