The sediment routing systems of Northern South America since 250 Ma

Bajolet, Flora; Chardon, Dominique; Rouby, Delphine; Dall’Asta, Massimo; Loparev, Artiom; Couëffé, Renaud; Roig, Jean-Yves

doi:10.1016/j.earscirev.2022.104139

Cited by 5 publications

(3 citation statements)

References 144 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Regions located in between these basins, in the northern Andes area present a classical coarsening‐up prograding sequence from shallow marine to continental deposits (Horton, 2018) more comparable to M1 (Figure 6a). In areas where the Andean foreland domain was initially elevated (outcropping basement of South American shields), the forebulge is mainly buried by continental sediments (Bajolet et al., 2022) as predicted by models M2 and M4 (Figure 6d).…”

Section: Discussionmentioning

confidence: 90%

“…The northern Andean sediment routing system (∼3,500 km for the Amazonian drainage area; Bajolet et al., 2022) is significantly longer than the northern Pyrenean one (∼700 km) and the Andes has a significantly higher elevation. It is, however, interesting that the only regions in the Andean retro‐foreland basin where marine, and especially deep marine, sediments are preserved (e.g., Llanos basin (Colombia), Oriente basin (Ecuador), Ucayali basin (Peru)) correspond to former retro‐arc basins (Horton, 2018).…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Impact of Inherited Foreland Relief on Retro‐Foreland Basin Architecture

et al. 2023

Self Cite

View full text Add to dashboard Cite

We use a Landscape Evolution Model including flexural isostasy to investigate the influence of inherited foreland relief on the stratigraphic evolution of the retro‐foreland domain during mountain building. We show models with four different types of initial relief in the foreland domain: at sea level, elevated (+300 m), a 1 km‐deep and 100 km‐wide foreland basin associated with either a forebulge at sea level or elevated at +300 m. During the first 10 Myr of simulation, the landscape evolution of the foreland is significantly altered by its inherited bathymetry/topography. The impact is then smoothed out once the foreland slope has stabilized and develops a transverse drainage network. Models record a long‐term shallowing‐up mega‐sequence driven by the increase in sediment production rate in the uplifting range and the decrease in the rate of flexural accommodation space creation in the foreland basin. The initial relief of the foreland domain alters the timing of its transition from the under‐filled to the over‐filled phase. An initially deep foreland basin is twice as thick as an initially elevated foreland. It records deep marine deposits while a foreland initially at sea level records thin shallow marine and an elevated foreland records continental deposits. The forebulge is buried by continental deposits in an initially elevated foreland while it is buried by marine sediments in other models. Alluvial fans at the foot of the range are more elevated in initially elevated forelands. We discuss our results of modeled stratigraphic architecture in comparison with the Pyrenean, Alpine and Andean retro‐foreland basins.

show abstract

Section: Discussionmentioning

confidence: 90%

Section: Discussionmentioning

confidence: 99%

Impact of Inherited Foreland Relief on Retro‐Foreland Basin Architecture

et al. 2023

Self Cite

View full text Add to dashboard Cite

show abstract

“…The Early Cretaceous evolution of the UMB is characterized by an extensional tectonic regime associated with a global plate configuration from the separation of South America and Africa and the formation of southern Atlantic Ocean between them (Bajolet et al, 2022;Bayona et al, 2006;Ramos, 2010;Sarmiento-Rojas et al, 2006;Zapata et al, 2019Zapata et al, , 2020. During the Late Cretaceous, the compressional history of the Andean Orogeny began with the deformation of an ancestral 'Central Cordillera' and several intrabasin highs (Bayona, 2018;Sarmiento & Rangel, 2004).…”

Section: Geological Settingmentioning

confidence: 99%

Fracture evaluation of the plutonic basement in the Upper Magdalena Basin: Implications for the development of naturally fractured reservoirs in the Northern Andes

Rodríguez‐Cuevas,

Cardona,

Monsalve

et al. 2024

Geological Journal

View full text Add to dashboard Cite

Plutonic rocks typically have negligible matrix porosity and permeability. However, fractures and mineral alterations create storage space and flow pathways that turn plutonic rocks into fluid reservoirs. Despite significant hydrocarbon discoveries, naturally fractured reservoirs in plutonic rocks have been poorly studied. In most Colombian basins, the crystalline basement has undergone multiple deformational events and is thrust over the Cretaceous to Cenozoic source and reservoir rocks of the conventional petroleum system. This structural configuration is ideal for the migration of oil into a fractured basement. A multiscale fracture analysis, including field, petrographical and petrophysical techniques was conducted on the Permian and Jurassic plutonic basement of Upper Magdalena Basin in order to understand the controls on brittle deformation, the development of fracture networks and their potential to form hydrocarbon reservoirs. The results indicate that protolith textures and structures, including magmatic and mylonitic foliation, favours fracturing. Dykes exhibit higher fracture density (7–48 fractures/m), porosity (mean = 0.4%) and permeability (mean = 125,818.75 mD) than the host rock (2–25 fractures/m; 0.23%; 12,066.09 mD). Intersection zones from regional faults, are characterized by the highest fracture and lineament intensity. Our results suggest that dyke swarms and interacting damage zones can significantly enhance the reservoir quality of plutonic rocks by providing storage in fractures and fluid pathways to the host rock.

show abstract

Meta‐analysis of the long‐term stratigraphic evolution of rifted margin basins: The GeoDyNamical Analysis approach applied to the South Atlantic Ocean

et al. 2022

Self Cite

View full text Add to dashboard Cite

Models of the formation of rifted margins have significantly evolved over the last decades by identifying new styles of crustal thinning and magmatic production. However, the expression of these different processes in the depositional environments of the overlying basins remains to be determined. Using only published data, we integrated the sedimentary evolution of 21 basins of the Equatorial, Central and South segments of the South Atlantic that record various styles of crustal thinning and magmatic production. To compare these basins that underwent rifting at different times, we developed a new type of analysis allowing to evaluate statistically the (dis)similarities in depositional environment trends by normalizing them to the tectonic phases of the basin (syn‐rift, transition and post‐rift) rather than the stratigraphic or absolute ages: The GeoDyNamical Analysis. We show that the timing of the long‐term retrograding mega‐sequence driven by lithosphere thinning depends on the deformation style and magma production. Along oblique margins of the Equatorial Segment, deepening initiated during syn‐rift because their narrow crustal thinning style favours rapid tectonic subsidence surpassing sediment supply. Along wide margins of the Central Segment, deepening is initiated later, at the end of the transition phase, because depth‐dependent thinning favours slow tectonic subsidence and late break‐up. Along magma‐rich margins of the South Segment, deepening is initiated during the transition phase, after volcanics stopped filling accommodation created by subsidence. In the Central Segment, evaporites accumulated during the second half of the transition phase, when crustal thinning ceased in the proximal margin and migrated to its distal part. Immediately before and during evaporites accumulation, sediments recorded continental and coastal depositional environments resulting from the limited thermal subsidence in the proximal margin domain. Evaporite deposition lasted until the initiation of retrograding mega‐sequence, at the onset of the post‐rift phase and the end of crustal thinning in the distal margin.

show abstract

The sediment routing systems of Northern South America since 250 Ma

Cited by 5 publications

References 144 publications

Impact of Inherited Foreland Relief on Retro‐Foreland Basin Architecture

Impact of Inherited Foreland Relief on Retro‐Foreland Basin Architecture

Fracture evaluation of the plutonic basement in the Upper Magdalena Basin: Implications for the development of naturally fractured reservoirs in the Northern Andes

Meta‐analysis of the long‐term stratigraphic evolution of rifted margin basins: The GeoDyNamical Analysis approach applied to the South Atlantic Ocean

Contact Info

Product

Resources

About