+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Relations between folding and metamorphism in the central Pyrenees, and their chronological succession

, : Relations between folding and metamorphism in the central Pyrenees, and their chronological succession. Geologie en Mijnbouw 39(5): 163-180

The structural and metamorphic history of the Hercynian (late Paleozoic) belt of the Pyrenees can be divided into prekinematic, early synkinematic, late synkinematic, and postkinematic phases. The early synkinematic phase can be subdivided into two stages; the first stage produced east-trending folds, and caused cleavage in low-grade metamorphic rocks and schistosity in high-grade metamorphics. Effects of the second stage are only noticeable in mica schists and consist of folding about north-trending axes and rotation of minerals; folds are isoclinal and small in size. The late synkinematic deformation produced small-scale cross folding with northwest- and northeast-trending axial planes, and has been found in slates, phyllites, and mica schists. In gneisses and migmatites, the late kinematic cross folding is accompanied by granitization and plastic deformation. Time relations between deformation and crystallization of minerals can be derived from microscopic observation of the relationships between internal and external fabric of porphyroblasts. Crystals of staurolite, andalusite, and cordierite were produced during the deformational phases, and also during periods of static metamorphism between the deformational stages.


Other references

Stadelmann-Buser, C., 1991: The effect of reading fairy tales on elderly people. Pflege 4(1): 54-64

Singh, SN.; Singh, S.; Mehto, DN.; Singh, SP., 1980: Record of climbing cutworm, Rhyacia herculea Corti & Draudt. from Delhi. Bulletin of Entomology. 1979 ; 201-2: 131

Peng, Z.; Mao, J.; Chen, X.; Cai, F.; Gu, W.; Fu, H.; Shen, H.; Wang, J.; Jin, X.; Zhu, X.; Liu, A.; Shu, Q.; Du, L., 2015: Serum suPAR levels help differentiate steroid resistance from steroid-sensitive nephrotic syndrome in children. Soluble urokinase plasminogen activator receptor (suPAR) has been regarded as a permeability factor in proteinuria, though its role in primary nephrotic syndrome remains to be elucidated further. Plasma samples and clinical information from 176 ch...

Walther Paul, 1936: Fluorescent minerals from many localities. Mineralogist 4(1): 5-6

Iankovskiĭ, V.E.; Shadymov, A.B., 1987: Characteristics of the entry gunshot wound to the flat cranial bones by an unjacketed bullet in a 90-degree shot from a small-gauge TOZ-8 rifle of 5.6-mm caliber. Sudebno-Meditsinskaia Ekspertiza 30(3): 7-10

Szeberenyi, J.B.; Orso, E.; Laszlo, V.; Falus, A.; Schmitz, G., 2000: Histamine and H2 agonist amthamine increase oxidative burst activity of human leukocytes determined by flow cytometry. Inflammation Research 49(Supplement 1): S72-S73

Kazuhiko Takamatsu, Akihiro Wakata, Rika Hirota…, 2013: Refinement and verification of test conditions for colony-forming unit assay in dog bone marrow cells with preservable colony specimens. The colony-forming unit assay reported by Kubota is a potentially useful method for toxicity evaluation since the method enables us to preserve the specimens. However, no study has yet reported on the utility of Kubota s method in conducting the C...

Wilson, J.B.; Gitay, H., 1999: Alternative classifications in the intrinsic guild structure of a New Zealand tussock grassland. Guild structure was determined in the inter-tussock vegetation of a New Zealand grassland. Twenty-one sites were sampled by shoot presence/absence in 10 x 10 cm quadrats, for all macroscopic plants. Using these data, intrinsic guilds were derived...

Frey, F.; Menzi, M.; Weilenmann, F.; Fried, P.M., 1980: Official list of cereal cultivars 1980/81. Agronomic characteristics of 10 winter wheat, 8 spring wheat, 2 winter rye, 1 spring rye and 3 spelt wheat cv. classified as bread grain, and of 5 winter barley, 6 spring barley, 2 winter oats, 6 spring oats (feed types) and 28 grain and silage ma...

Robertson, J.S., 1962: Dry basal rot, a new disease of Oil Palms caused by Ce'ratocystis paradoxa (Dade) Moreau. From the W. African Inst. for Oil Palm Res., Nigeria, outbreaks of dry basal rot have been confirmed in the British Cameroons, Ghana, and W. Nigeria. Symptoms are described in detail, also pathogenicity tests which were successful on oil palm seed...