Compaction process in sedimentary basins: the role of stiffness increase and hardening induced by large plastic strains

2004 ◽  
Vol 28 (13) ◽  
pp. 1279-1303 ◽  
Author(s):  
V. Deudé ◽  
L. Dormieux ◽  
S. Maghous ◽  
J. F. Barthélémy ◽  
D. Bernaud
Keyword(s):  
Sedimentary Basins ◽  
Plastic Strains ◽  
Compaction Process

Modelling of structural complexity in sedimentary basins: The role of pre-existing faults in thrust tectonics

1993 ◽  
Vol 226 (1-4) ◽  
pp. 97-112 ◽  
Author(s):  
W. Sassi ◽  
B. Colletta ◽  
P. Balé ◽  
T. Paquereau
Keyword(s):  
Structural Complexity ◽  
Sedimentary Basins ◽  
Thrust Tectonics

scholarly journals Formulation of reference solutions for compaction process in sedimentary basins

2020 ◽  
Vol 44 (16) ◽  
pp. 2135-2166
Author(s):  
Paulo Sérgio B. Lemos ◽  
André Brüch ◽  
Samir Maghous
Keyword(s):  
Sedimentary Basins ◽  
Compaction Process

How to find a dinosaur, and the role of synonymy in biodiversity studies

Paleobiology ◽  
2008 ◽  
Vol 34 (4) ◽  
pp. 516-533 ◽  
Author(s):  
Michael J. Benton
Keyword(s):  
Conservation Biology ◽  
Evolutionary Biology ◽  
Sedimentary Basins ◽  
Error Rates ◽  
Species Level ◽  
Data Sets ◽  
Error Level ◽  
Prolific Author ◽  
Generic Level

Taxon discovery underlies many studies in evolutionary biology, including biodiversity and conservation biology. Synonymy has been recognized as an issue, and as many as 30–60% of named species later turn out to be invalid as a result of synonymy or other errors in taxonomic practice. This error level cannot be ignored, because users of taxon lists do not know whether their data sets are clean or riddled with erroneous taxa. A year-by-year study of a large clade, Dinosauria, comprising over 1000 taxa, reveals how systematists have worked. The group has been subject to heavy review and revision over the decades, and the error rate is about 40% at generic level and 50% at species level. The naming of new species and genera of dinosaurs is proportional to the number of people at work in the field. But the number of valid new dinosaurian taxa depends mainly on the discovery of new territory, particularly new sedimentary basins, as well as the number of paleontologists. Error rates are highest (>50%) for dinosaurs from Europe; less well studied continents show lower totals of taxa, exponential discovery curves, and lower synonymy rates. The most prolific author of new dinosaur names was Othniel Marsh, who named 80 species, closely followed by Friedrich von Huene (71) and Edward Cope (64), but the “success rate” (proportion of dinosaurs named that are still regarded as valid) was low (0.14–0.29) for these earlier authors, and it appears to improve through time, partly a reflection of reduction in revision time, but mainly because modern workers base their new taxa on more complete specimens. If only 50% of species are valid, evolutionary biologists and conservationists must exercise care in their use of unrevised taxon lists.

Analysis of Densification Process and Structure of PM Al-Mg-Si-Cu-Fe and Al-Zn-Mg-Cu-Sn Alloys

2014 ◽  
Vol 59 (1) ◽  
pp. 17-23 ◽  
Author(s):  
R. Bidulský ◽  
J. Bidulská ◽  
M. Actis Grande
Keyword(s):  
Test Specimen ◽  
Hardened Steel ◽  
Pressing Pressure ◽  
Metal Powders ◽  
Compaction Process ◽  
Cylinder Test ◽  
Die Compaction ◽  
Uniaxial Compaction ◽  
Compaction Behaviour

Abstract The paper is focused on the role of the pressing pressure on the densification behaviour of PM aluminium alloys. Commercially aluminium based powders Al-Mg-Si-Cu-Fe and Al-Zn-Mg-Cu-Sn were used as materials to be investigated. The apparent density of the powder mixes was determined according to MPIF St. 04. A set of cylinder test specimen 55x10x10 mm3 was uniaxially pressed in a floating hardened steel die. Compaction pressures ranged from 50 MPa up to 700 MPa. Considering the densification of metal powders in uniaxial compaction, quantification of aluminium compaction behaviour was performed. The compressibility behaviour was evaluated, considering the effect on specimens, as well as on their microstructure. The development of compressibility values with pressing pressure enables to characterize the effect of particles geometry and matrix plasticity on the compaction process.

The role of thermal conductivity measurements in modelling thermal histories in sedimentary basins

1997 ◽  
Vol 14 (2) ◽  
pp. 201-214 ◽  
Author(s):  
Kerry Gallagher ◽  
Marc Ramsdale ◽  
Lidia Lonergan ◽  
David Morrow
Keyword(s):  
Thermal Conductivity ◽  
Sedimentary Basins ◽  
Conductivity Measurements ◽  
Thermal Histories

scholarly journals Inversion structures in Central Europe - Expressions and reasons, an open discussion

2003 ◽  
Vol 82 (4) ◽  
pp. 351-366 ◽  
Author(s):  
F. Kockel
Keyword(s):  
Interdisciplinary Research ◽  
Sedimentary Basins ◽  
Northern Europe ◽  
Nw Germany ◽  
Salt Intrusion ◽  
Comprehensive Theory ◽  
Open Discussion ◽  
Zechstein Salt ◽  
The Impact

AbstractThe diversity of morphological features of Mesozoic inversion structures in NW Germany as representatives of inversion structures in northern Europe is presented and their origin analysed and geologically dated. The particular role of salt in inverted basins and the re-shaping of pre-existing salt structures during the inversion act is demonstrated and the term ‘salt wedge’, a Zechstein salt intrusion into salt layers within the Triassic sedimentary pile, introduced. The leading theories on inversion (continent-continent collision, re-activation Variscan features) are discussed and discarded, but no new comprehensive theory was developed. The impact of inversion on HC prospectivity of sedimentary basins is debated and proposals for future interdisciplinary research are made.

scholarly journals Shaping of intraplate mountain patterns: The Cantabrian orocline legacy in Alpine Iberia

Lithosphere ◽  
2019 ◽  
Vol 11 (5) ◽  
pp. 708-721 ◽  
Author(s):  
J. Fernández-Lozano ◽  
G. Gutiérrez-Alonso ◽  
E. Willingshofer ◽  
D. Sokoutis ◽  
G. de Vicente ◽  
...  
Keyword(s):  
Large Scale ◽  
Sedimentary Basins ◽  
Surface Velocity ◽  
Mantle Evolution ◽  
Large Numbers ◽  
Subsequent Response ◽  
Geodynamic Processes ◽  
Analogue Experiments ◽  
Fault Displacement

Abstract The present-day topography in Iberia is related to geodynamic processes dealing with lithospheric-scale deformation. However, little attention has been paid to the role of inherited crustal- or lithospheric-scale structures involved in the recent observed large-scale topographic patterns. Whereas the analysis of brittle structures focuses on the evolution of Mesozoic sedimentary basins and their subsequent response to tectonic inversion, their contribution to mountain building has been underestimated. Large numbers of structures, from ductile to brittle, which affected the whole lithosphere, were developed during the evolution of the Cantabrian orocline (ca. 310–300 Ma). The contribution of these Paleozoic post-Variscan structures, together with lithospheric mantle evolution and replacement during orocline development in the Mesozoic and Cenozoic geological evolution of Iberia, remains unexplored. To explore the role of these inherited structures on the final configuration of topography during N-S Pyrenean shortening, we carried out a series of analogue experiments complemented by surface velocity field analyses. Our experiments indicate that strain was concentrated along preexisting crustal- to lithospheric-scale discontinuities, and they show several reactivation events marked by differences in the velocity vector field. Differences in fault displacement were also observed in the models depending upon preexisting fault trends. The obtained results may explain the different amount of displacement observed during the reactivation of some of the post-orocline structures in Iberia during the Cenozoic, indicating the key role of unveiled structures, which probably have accommodated most of the Alpine shortening.

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