scholarly journals Late Carboniferous to Permian remagnetization of Devonian limestones in the Ardennes: Role of temperature, fluids, and deformation

2003 ◽  
Vol 108 (B7) ◽  
Author(s):  
T. E. Zegers ◽  
M. J. Dekkers ◽  
S. Bailly
Keyword(s):  
Late Carboniferous

Contribution a l'etude tectonique de la presqu'ile de Brogger (Spitsberg)

1966 ◽  
Vol S7-VIII (4) ◽  
pp. 560-566 ◽  
Author(s):  
Lucien Barbaroux
Keyword(s):  
Late Carboniferous ◽  
Late Paleozoic ◽  
Metamorphic Complex

Abstract New observations on the Brogger peninsula (Spitsbergen) show that the Hecla Hoek (Caledonide) geosynclinal metamorphic complex, reactivated by successive orogenies, overlaps Paleozoic and Cenozoic sedimentary formations in a northwest direction along a continuous front. The role of northwest-southeast-trending deformation in the Hercynian (late Paleozoic) and north-south deformation in the Tertiary assume greater importance than was heretofore accorded them. The existence of an Erzgebirgian (late Carboniferous) and a Saalian (mid-Permian) phase of Paleozoic orogeny can be shown.

scholarly journals Late Carboniferous dextral transpressional reactivation of the crustal-scale Walls Boundary Fault, Shetland: the role of pre-existing structures and lithological heterogeneities

2020 ◽  
Vol 178 (1) ◽  
pp. jgs2020-078
Author(s):  
Timothy B. Armitage ◽  
Lee M. Watts ◽  
Robert E. Holdsworth ◽  
Robin A. Strachan
Keyword(s):  
Late Carboniferous ◽  
Strain Partitioning ◽  
Boundary Fault ◽  
Existing Structures ◽  
Tectonic Events ◽  
Tectonic Environment ◽  
Western Side ◽  
East West ◽  
Lithological Heterogeneity

The Walls Boundary Fault in Shetland, Scotland, formed during the Ordovician–Devonian Caledonian orogeny and underwent dextral reactivation in the Late Carboniferous. In a well-exposed section at Ollaberry, westerly verging, gently plunging regional folds in the Neoproterozoic Queyfirth Group on the western side of the Walls Boundary Fault are overprinted by faults and steeply plunging Z-shaped brittle–ductile folds that indicate contemporaneous right-lateral and top-to-the-west reverse displacement. East of the Walls Boundary Fault, the Early Silurian Graven granodiorite complex exhibits fault-parallel fractures with Riedel, P and conjugate shears indicating north–south-striking dextral deformation and an additional contemporaneous component of east–west shortening. In the Queyfirth Group, the structures are arranged in geometrically and kinematically distinct fault-bounded domains that are interpreted to result from two superimposed tectonic events, the youngest of which displays evidence for bulk dextral transpressional strain partitioning into end-member wrench and contractional strain domains. During dextral transpressional deformation, strain was focused into pelite horizons and favourably aligned pre-existing structures, leaving relicts of older deformation in more competent lithologies. This study highlights the importance of pre-existing structures and lithological heterogeneity during reactivation and suggests the development of a regional transpressional tectonic environment during the Late Carboniferous on the Shetland Platform.

Fossil evidence for plant-arthropod interactions in the Palaeozoic and Mesozoic

1991 ◽  
Vol 333 (1267) ◽  
pp. 177-186 ◽  
Keyword(s):  
Fossil Record ◽  
Vascular Plants ◽  
Feeding Activity ◽  
Late Carboniferous ◽  
Gut Contents ◽  
Leaf Miners ◽  
Plant Feeding ◽  
Plant Animal Interactions ◽  
Wood Boring

Some of the earliest Devonian fossils of vascular plants show lesions that may be attributed to plant feeding activity by animals. This is the beginning of a more or less continuous fossil record of plant-animal interactions which extends from the Devonian to the present day. An important feature of pre-Cretaceous material is the evidence from coprolites and gut-contents of spore eating by arthropods. Experiments with living arthropods, of groups represented in the Palaeozoic, show that viable spores can survive passage through the gut in significant numbers. Spore eating could clearly have had a dispersal role of value to the plant, as well as its evident benefit as a source of nutrition for the animal involved. Evidence of wood boring and leaf eating extends from the late Carboniferous onwards. It appears that ‘continuous marginal’ leaf-feeding preceded 'interrupted marginal’ feeding, and that this was in turn followed by ‘non-marginal’ leaf feeding. The latter first appeared in Cretaceous angiosperms. Some diversity of leaf miners and leaf galls are also represented in Cretaceous angiosperm leaf fossils.

scholarly journals Role of calcimicrobes and microbial carbonates in the Late Carboniferous (Moscovian) mounds in southern Guizhou, South China

2019 ◽  
Vol 8 (1) ◽  
Author(s):  
Wen-Tao Huang ◽  
Yong-Li Zhang ◽  
Chang-Qing Guan ◽  
Zhuo-Wei Miao ◽  
Xiao-Hong Chen ◽  
...  
Keyword(s):  
South China ◽  
Late Carboniferous ◽  
Microbial Carbonates

Role of dactinomycin in the improved survival of children with Wilms' tumor

JAMA ◽  
1966 ◽  
Vol 195 (12) ◽  
pp. 1005-1009 ◽  
Author(s):  
D. J. Fernbach
Keyword(s):  
Wilms Tumor

Role of the allergist in diagnosis and management of patients with uveitis

JAMA ◽  
1966 ◽  
Vol 195 (3) ◽  
pp. 167-172 ◽  
Author(s):  
T. E. Van Metre
Keyword(s):  
Diagnosis And Management

The power of norms to sway fused group members

2018 ◽  
Vol 41 ◽  
Author(s):  
Winnifred R. Louis ◽  
Craig McGarty ◽  
Emma F. Thomas ◽  
Catherine E. Amiot ◽  
Fathali M. Moghaddam
Keyword(s):  
Evolutionary Anthropology ◽  
Normative Systems ◽  
Violent Extremism ◽  
Identity Fusion ◽  
Group Members

AbstractWhitehouse adapts insights from evolutionary anthropology to interpret extreme self-sacrifice through the concept of identity fusion. The model neglects the role of normative systems in shaping behaviors, especially in relation to violent extremism. In peaceful groups, increasing fusion will actually decrease extremism. Groups collectively appraise threats and opportunities, actively debate action options, and rarely choose violence toward self or others.

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