Metasedimentary “graben” and associated structures in the lagoonal Almere Member (Groningen Formation, The Netherlands)

Loon, A.J. van; Wiggers, A.J.

doi:10.1016/0037-0738(76)90001-4

Cited by 36 publications

(47 citation statements)

References 6 publications

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“…The graben‐like deformation structure noted in the base of unit II is interpreted as a gravifossum (gravity‐induced elongated depression). Similar structures have been described by van Loon and Wiggers (1976) and van Loon (1992, 2009) from lagoonal subrecent sediments in The Netherlands, and by Brodzikowski and van Loon (1979) and Gruszka and van Loon (2011) from glaciogenic deposits. The Cieśle graben‐like deformation probably formed as a result of subsidence due to ongoing melting of an underlying, buried ice float in combination with gradual loading due to aggradation of unit II.…”

supporting

confidence: 82%

Specific erosional and depositional processes in a pleistocene subglacial tunnel in the wielkopolska region, poland

Pisarska‐Jamroży

Zieliński

2012

Geografiska Annaler: Series A, Physical Geography

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The Pleistocene Cieśle succession accumulated in a subglacial tunnel and shows three sedimentological units: (1) trough cross‐stratified sand with granules deposited in deep channels up to 5.4 m, (2) trough stratified and massive gravels deposited in a very deep channel up to 6.2 m eroded by a catastrophic hyperconcentrated flow, and (3) a massive diamicton, interpreted as a basal till of melt‐out type. We focus on angular and deformed sandy clasts that occur in the second unit. It appears that thermal erosion, short transport in a sediment‐laden current and sudden sedimentation were responsible for the oversized sandy clasts that occur in the gravel glaciofluvial deposits. The deposits are characterized by large‐scale erosional scours, massive structure, and fluid‐escape deformations. This combination of features can be used as a key tool for the interpretation of hyperconcentrated‐flow conditions beneath Pleistocene ice sheets.

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supporting

confidence: 82%

Specific erosional and depositional processes in a pleistocene subglacial tunnel in the wielkopolska region, poland

Pisarska‐Jamroży

Zieliński

2012

Geografiska Annaler: Series A, Physical Geography

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“…The tectonically active setting of Fossil Basin during deposition (e.g., Coogan 1992) supports this interpretation. A comparable range of structures has been inferred to be seismites in other marine and lacustrine units (e.g., van Loon and Wiggers 1976;Brenchley and Newall 1977;Grimm and Orange 1997;Jones and Omoto 2000;Rodríguez-Pascua et al 2000;McLaughlin and Brett 2004;El Taki and Pratt 2012). The absence of other types of seismites, such as vein arrays (e.g., Ohsumi and Ogawa 2008) is due to lack of sediments with the appropriate rheological properties.…”

Section: Trigger Mechanismmentioning

confidence: 94%

Eocene Paleoseismic Record of the Green River Formation, Fossil Basin, Wyoming, U.S.A.: Implications of Synsedimentary Deformation Structures In Lacustrine Carbonate Mudstones

Toro¹,

Pratt²

2015

Journal of Sedimentary Research

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Laterally extensive intervals containing sedimentary deformation features are identified in outcrops of lacustrine deposits of the Eocene (, 52-51 Ma) Green River Formation in Fossil Basin, southwestern Wyoming. Fossil Basin is the smallest of the paleo-lakes in the Green River system and is located in the Sevier Fold and Thrust Belt, which was tectonically active during deposition. Deformation structures include convolute lamination, load structures, hybrid brittle-ductile features, sedimentary dikes, microfaults, fluid-escape features such as cusps and pipes, oil-shale breccias, and mass-transport deposits. In most cases these structures are hosted by finely laminated, variably organic-rich carbonate mudstones that accumulated in a low-energy profundal lacustrine environment. Deformed intervals range from a few centimeters to 5 m in thickness and are bound above and below by undeformed strata of the same facies, which demonstrates the early post-depositional timing of deformation. The distribution of these features indicates a primary control exerted by sediment rheology, resulting from variation in grain size, clay and organic content, and degree of lithification, which in turn were governed by the depositional environment and early diagenesis.Based on their morphological attributes, lateral extent, and recurrence at different stratigraphic levels, along with their sedimentary environment and the tectonic setting of the basin, the deformation structures are interpreted to be ''seismites,'' i.e., the result of stresses induced by syndepositional earthquakes, and other potential trigger agents are rejected. Moreover, stratigraphic relationships indicate that these small-scale deformation features as well as the mass-transport deposits, formed on a virtually flat lake floor, ruling out instability caused by the gravitational regime. Syndepositional deformation in Fossil Basin points to tectonic activity along the nearby Absaroka and/or Hogsback thrusts and related fault systems. Seismites point to possible tectonic forcing as a mechanism for changes in bathymetry and sedimentation in the Green River Formation and, consequently, demonstrate their potential for elucidating the tectonic history of other lacustrine and marine basins.

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“…Tension fissures evolving in pockets by erosion (free runoff or piping), often with a tilted stratified infill (Fig. 5E), may occur by progressive subsidence (fault creep or simple consolidation) leading to sink deformation similar to the ''gravifossum'' described by Van Loon (1992) and Van Loon and Wiggers (1976). These forms are much narrower than those developed by periglacial thermokarst.…”

Section: Faults and Fracturesmentioning

confidence: 92%

Distinguishing between tectonic and periglacial deformations of quaternary continental deposits in Europe

Vliët-Lanoé

Magyari²,

Meilliez

2004

Global and Planetary Change

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Metasedimentary “graben” and associated structures in the lagoonal Almere Member (Groningen Formation, The Netherlands)

Cited by 36 publications

References 6 publications

Specific erosional and depositional processes in a pleistocene subglacial tunnel in the wielkopolska region, poland

Specific erosional and depositional processes in a pleistocene subglacial tunnel in the wielkopolska region, poland

Eocene Paleoseismic Record of the Green River Formation, Fossil Basin, Wyoming, U.S.A.: Implications of Synsedimentary Deformation Structures In Lacustrine Carbonate Mudstones

Distinguishing between tectonic and periglacial deformations of quaternary continental deposits in Europe

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