Hydrothermally induced diagenesis: Evidence from shallow marine-deltaic sediments, Wilhelmøya, Svalbard

Haile, Beyene Girma; Czarniecka, Urszula; Xi, Kelai; Smyrak-Sikora, Aleksandra; Jahren, Jens; Braathen, Alvar; Hellevang, Helge

doi:10.1016/j.gsf.2018.02.015

Cited by 27 publications

(26 citation statements)

References 78 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Dypvik () also describes sill‐related geochemical changes in Triassic strata 100 m away from a 55 m thick sill. Haile et al () identify sill‐related hydrothermally induced diagenesis in Triassic rocks on Wilhelmøya, N of Edgeøya, at a distance more than five times the sill thickness. Polteau et al () explore and model how HALIP could have been a significant catagenic event in the northern Barents Sea area.…”

Section: Discussionmentioning

confidence: 99%

Mesozoic‐Cenozoic Regional Stress Field Evolution in Svalbard

Maher

Senger²,

Braathen

et al. 2020

Tectonics

Self Cite

View full text Add to dashboard Cite

Cooling fracture orientations in diabase sills associated with the Cretaceous High Arctic Large Igneous Province and syn-sedimentary Triassic faults help constrain a model for Svalbard's (NE Barents Shelf) Mesozoic stress field evolution. Fracture data from Edgeøya and adjacent islands in SE Svalbard, from S Spitsbergen, and from literature were used to model preferred orientations and temporal relationships. Orthogonal, roughly E-W and N-S, joints and veins in sills from SE Svalbard are interpreted as cooling fractures influenced by the ambient stress field. Aligned preferred orientations within the Triassic host strata are associated with a regional Cretaceous jointing episode driven by sill emplacement and/or erosional unloading. The regional maximum horizontal stress (likely σ1) is inferred to have been parallel to a dominant ≈E-W set. Spitsbergen's more complex joint patterns are associated with proximity to the Cenozoic West Spitsbergen Fold-and-Thrust Belt, but ≈E-W and ≈N-S orientations occur and are typically the earlier set. Syn-sedimentary, ≈NW-SE striking, Triassic normal faults in SE Svalbard aligned with the maximum horizontal stress indicate a Triassic to Cretaceous counterclockwise stress field shift, with additional counterclockwise shifting during Cenozoic dextral transpression between Svalbard and Greenland. Localized joint preferred orientations consistent with both decoupled and coupled transpression occur. Changes in the regional maximum horizontal stress and deformation regime may reflect timing of which plate margin was crucial in influencing Svalbard's plate interior stress field, starting with Triassic Uralian activity to the E, then Cretaceous Amerasian Basin development to the NW, culminating with Cenozoic dextral transpression and transtension to the SW.

show abstract

Section: Discussionmentioning

confidence: 99%

Mesozoic‐Cenozoic Regional Stress Field Evolution in Svalbard

Maher

Senger²,

Braathen

et al. 2020

Tectonics

Self Cite

View full text Add to dashboard Cite

show abstract

“…Recently available data from Wilhelmøya (Haile et al 2018) show limited impacts of chemical compaction (burial diagenesis), explaining the friable sandstone in the Wilhelmøya area (Worsley 1973).…”

Section: Sandstone Compositions and Impacts Of Diagenesis: Sentralbankenmentioning

confidence: 99%

Sedimentology and petrography of the Svenskøya Formation on Hopen, Svalbard: an analogue to sandstone reservoirs in the Realgrunnen Subgroup

Lord

Mørk

et al. 2019

Polar Research

View full text Add to dashboard Cite

On the island of Hopen, in the Svalbard Archipelago, the Svenskøya Formation is a succession 35 m in thickness, consisting primarily of sandstone beds and forming the youngest strata exposed on the island. We present a sedimentological and petrographic study of the formation and compare the unit with its exposures on Wilhelmøya and in Kong Karls Land, Svalbard. We also compare the onshore characteristics of the Svenskøya Formation with those of the Tubåen Formation, its time-equivalent unit in the Sentralbanken area of the northern Barents Sea. On Hopen, the Svenskøya Formation is interpreted as representing coarse clastic sediments deposited in a fluvial to tidal setting, prior to being overlain by a thin interval composed of tidal channel and marine shale deposits. The unit sits atop the regional "Rhaetian Unconformity" and represents sediments deposited during a regressive system that terminates at a flooding surface representing a local transgression of the palaeo-coastline. Petrographic studies show the formation as being arkosic, both on Hopen and in the Sentralbanken area. The reservoir quality of sandstone samples recovered from Hopen is somewhat lower compared to sandstone reservoirs in the Sentralbanken area. We attribute this to greater effects of diagenesis in the Hopen area, which caused increased compaction, mineral dissolution and extensive precipitation of pore-filling clay minerals.

show abstract

“…Earlier studies of magmatic intrusions and their effect on porosity evolution and diagenesis of reservoir rocks have come to contrasting conclusions (e.g., [14,15,[122][123][124]). The diagenetic processes of sandstone reservoirs are likely to be controlled by the initial composition of the sand, original pore water composition, content of neighboring lithologies, burial and thermal history, and timing of cementation relative to accumulation of petroleum [17,47,82].…”

Section: Effect Of Magmatic Sills On the Diagenetic Process In Reservmentioning

confidence: 99%

“…Haile et al [14] concluded in their work at Edgeøya (Svalbard) that conductive heat from intrusions did not seem to have affected the diagenetic products in the area. However, at Wilhelmøya (Svalbard) there is evidence suggesting that hydrothermal fluid flow originating from sills has affected the chemical transformations [15]. In a study of sandstones at Traill Ø (East Greenland) it was concluded that a combination of conductive and convective heat from magmatism enhanced the diagenetic process [16].…”

Section: Introductionmentioning

confidence: 99%

The Influence of Magmatic Intrusions on Diagenetic Processes and Stress Accumulation

et al. 2019

View full text Add to dashboard Cite

Diagenetic changes in sedimentary basins may alter hydrocarbon reservoir quality with respect to porosity and permeability. Basins with magmatic intrusions have specific thermal histories that at time of emplacement and in the aftermath have the ability to enhance diagenetic processes. Through diagenesis the thermal conductivity of rocks may change significantly, and the transformations are able to create hydrocarbon traps. The present numerical study quantified the effect of magmatic intrusions on the transitions of opal A to opal CT to quartz, smectite to illite and quartz diagenesis. We also studied how these chemical alterations and the sills themselves have affected the way the subsurface responds to stresses. The modeling shows that the area in the vicinity of magmatic sills has enhanced porosity loss caused by diagenesis compared to remote areas not intruded. Particularly areas located between clusters of sills are prone to increased diagenetic changes. Furthermore, areas influenced by diagenesis have, due to altered physical properties, increased stress accumulations, which might lead to opening of fractures and activation/reactivation of faults, thus influencing the permeability and possible hydrocarbon migration in the subsurface. This study emphasizes the influence magmatic intrusions may have on the reservoir quality and illustrates how magmatic intrusions and diagenetic changes and their thermal and stress consequences can be included in basin models.

show abstract

Hydrothermally induced diagenesis: Evidence from shallow marine-deltaic sediments, Wilhelmøya, Svalbard

Cited by 27 publications

References 78 publications

Mesozoic‐Cenozoic Regional Stress Field Evolution in Svalbard

Mesozoic‐Cenozoic Regional Stress Field Evolution in Svalbard

Sedimentology and petrography of the Svenskøya Formation on Hopen, Svalbard: an analogue to sandstone reservoirs in the Realgrunnen Subgroup

The Influence of Magmatic Intrusions on Diagenetic Processes and Stress Accumulation

Contact Info

Product

Resources

About