Excursus on gravity gliding and gravity spreading

Schultz-Ela, Daniel D.

doi:10.1016/s0191-8141(01)00004-9

Cited by 75 publications

(50 citation statements)

References 29 publications

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“…The structure of accretionary wedges is strongly influenced by sedimentation in syntectonic basins and by gravity-driven emplacement of thrust sheets (see Schultz-Ela, 2001, for a review). The latter process can be produced by tectonic denudation of areas where exhumation of deep-seated rocks is accomplished by shallow-dipping normal faults (Ring et al, 1999).…”

Section: Introductionmentioning

confidence: 99%

Thrust sequences and evolution of the external sector of a fold and thrust belt: An example from the Southern Apennines (Italy)

Piedilato¹,

Prosser

2005

Journal of Geodynamics

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Section: Introductionmentioning

confidence: 99%

Thrust sequences and evolution of the external sector of a fold and thrust belt: An example from the Southern Apennines (Italy)

Piedilato¹,

Prosser

2005

Journal of Geodynamics

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“…This circumstance indicates that the lateral extension of the clay and marl subunit is accompanied by small subsidence and tilt of the overlying massive gypsiferous rocks as other researchers have described (e.g. Radbruch-Hall 1978, Schultz-Ela 2001.…”

Section: Interpretation and Synthesismentioning

confidence: 84%

A multidisciplinary approach for the investigation of a rock spreading on an urban slope

et al. 2017

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Landslides are very complex processes controlled by multiple factors. The knowledge and characterization of these factors is essential for a comprehensive understanding of the mechanisms and kinematics of the instabilities and for an efficient design of corrective measures. The aim of this work is to combine traditional geological and geotechnical techniques with geophysical, remote sensing and forensic techniques for obtaining a whole picture of an active lateral spreading affecting the Finestrat municipality in Alicante, SE Spain. Geomorphological, geotechnical and geophysical techniques (i.e. ground penetrating radar and refraction seismic) have provided essential information about the geometry, structure and petro-physical properties of the slope. A Terrestrial Laser Scanner was used for recognizing the most important sets of discontinuities affecting the rock mass and to evaluate the activity of the landslide slope. Complementarily, a forensic analysis of the building damage completed the available datasets, yielding very useful kinematic information of the landslide. Finally, a sensitivity analysis of the stability of the rock slope has been performed considering both block toppling and block sliding models. Therefore, the multisource analysis performed in this work has allowed the identification and characterization of a complex lateral spreading, highlighting its effectiveness for a comprehensive understanding of this type of landslide.

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“…Uma série de estudos de caso e de modelagem física experimental contribuiu para a compreensão contemporânea da tectônica gravitacional, especialmente quando induzida por um nível basal evaporítico (e.g. Dahlen et al, 1984;Jenyon, 1986;Vendeville & Cobbold, 1987, 1988Cobbold et al, 1989;Worrall & Snelson, 1989;Jackson & Cramez, 1989;McClay, 1990;Cobbold & Szatmari, 1991;Vendeville, 1991;Vendeville & Jackson, 1992a, b;Duval et al, 1992;Jackson et al, 1994Jackson et al, , 1995Cobbold et al, 1995;Mohriak et al, 1995;Ge et al, 1997;Rowan et al, 1999;Rowan et al, 2000;Schultz-Ela, 2001;Koyi & Vendeville, 2003;Rowan et al, 2004;Reis et al, 2005;Vendeville, 2005a, b;Hudec & Jackson, 2007;Krézsek et al, 2007). No entanto, estudos sobre a modalidade de tectônica gravitacional envolvendo níveis superpressurizados ainda permanecem relativamente pouco numerosos (e.g.…”

Section: Introductionunclassified

O processo de colapso gravitacional da seção marinha da bacia da foz do Amazonas - margem equatorial brasileira

Perovano¹,

Reis²,

Silva³

et al. 2009

Rev. Bras. Geof.

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ABSTRACT. Gravitational deformation affects the entire marine sequences of the Foz do Amazonas basin, including the sedimentary successions of the Amazon Fan.Associated gravity-driven structures, imaged by 2D multichannel seismic profiles, were driven by gravity in a linked extensional-contractional system gliding on weak levels, and driven by sedimentary loading and by the bathymetric slope. Sliding of the sedimentary section took place along distinct décollement surfaces and, apparently, at different stages of the margin's evolution. At least three main stratigraphic levels have acted as décollement surfaces, at either regional or local scale. Gravity-driven deep-water fold-and-thrust belts stand as the most remarkable structures along the margin. Their geometry and structural complexity vary along strike, owing to lateral changes in the development of the Amazon fan's depocenters. These structures are significantly more complex along the Northwestern Compartment, where the major margin's depocenters are located, exhibiting evidence of long-lasting deformation from multiple partially-overlapping fronts. In the South-eastern Compartment, the system is restricted to a pair of active reverse faults causing no major sea-bottom relief (inactivated belt). At local scale, antithetic normal growth faults detach on an upper décollement level and exert structural control on the segmentation of the fan's depocenters.Keywords: gravity tectonics, gravitational fold-and-thrust belts, Amazon Deep-sea Fan, Brazilian equatorial margin. RESUMO.As seqüências marinhas da Bacia Foz do Amazonas são deformadas pela tectônica gravitacional, incluindo aquelas do Leque do Amazonas. As estruturas associadas ao colapso gravitacional, imageadas por sísmica multicanal 2D, foram formadas pelo deslizamento gravitacional da cobertura sedimentar sobre níveis basais móveis, induzido pela sobrecarga sedimentar e pelo gradiente do talude. O deslizamento gravitacional ocorreu ao longo de distintas superfícies de descolamento e, aparentemente, em diferentes estágios evolutivos da margem. Ao menos três níveis estratigráficos principais atuaram como superfícies de descolamento, em escala regional ou local. Cinturões de dobramento e cavalgamento emáguas profundas são as estruturas mais notáveis deste arcabouço; sua geometria e complexidade variam ao longo da margem em repostaà variação lateral do desenvolvimento dos depocentros do Leque do Amazonas. Estas estruturas são mais complexas no Compartimento Noroeste onde os principais depocentros estão presentes, formando múltiplas frentes compressivas devido ao mais intenso encurtamento da cobertura sedimentar. No Compartimento Sudeste, o sistemaé menos desenvolvido e se limita a um cinturão parcialmente inativo, caracterizado apenas por um par de falhas reversas ativas com menor impacto morfológico. Localmente, falhas normais lístricas antitéticas se ancoram sobre a superfície de descolamento mais superior, exercendo um controle estrutural sobre a segmentação dos depocentros do próprio leque.Palavras-chav...

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Excursus on gravity gliding and gravity spreading

Cited by 75 publications

References 29 publications

Thrust sequences and evolution of the external sector of a fold and thrust belt: An example from the Southern Apennines (Italy)

Thrust sequences and evolution of the external sector of a fold and thrust belt: An example from the Southern Apennines (Italy)

A multidisciplinary approach for the investigation of a rock spreading on an urban slope

O processo de colapso gravitacional da seção marinha da bacia da foz do Amazonas - margem equatorial brasileira

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