Evolution tectonique et magmatique du NW du massif de Tazekka (Maroc oriental). Tectonic and magmatic evolution of the NW Tazekka massif (Eastern Morocco).

International audienceL'examen des événements tectoniques, métamorphiques et magmatiques de la partie NW du massif de Tazekka (Maroc oriental) a permis de mettre en évidence une évolution tectonique et magmatique polyphasée, définie par : (1) la mise en place des dolérites dans les plans de stratification S0 par mécanisme de sills alimentés à partir de dykes ; (2) une phase majeure de structuration caractérisée par de rares plis synschisteux de direction N10 à N30 et à plan axial subhorizontal marqué par la schistosité S1 ; (3) une phase de plissement qui reprend les structures précédentes, marquée par des plis de direction N00 à N60 synschisteux, dont le plan axial est généralement redressé avec un pendage modéré à fort vers l'est ; (4) la mise en place des granites, à l'origine d'un important métamorphisme de contact polyphasé, marqué principalement par la recristallisation de la cordiérite, suivi par une nouvelle phase de plissement pénécontemporaine de la deuxième manifestation métamorphique (biotites orientées dans la schistosité S3). Les plis P3, de direction N05 à N80, associés à la phase de plissement P3, présentent une schistosité S3 de plan axial à pendage généralement fort à modéré vers l'ouest ; (5) des chevauchements affectant l'ensemble des structures précédemment formées ; (6) des cassures tardi-hercyniennes. The study of the tectonic, metamorphic and magmatic events of the NW Tazekka massif (Eastern Morocco) has permitted to evidence a polyphased tectonic and magmatic evolution characterized by : (1) the installation of dolerites in the bedding planes by injection of sills fed by dykes; (2) a major phase of deformation characterized by rare synschistous folds, from the direction N10 to N30 and an axial sub-horizontal plane marked by S1 schistosity; (3) a phase of folding that refolded the former structures, characterised by N00 to N60 direction synschistous folds, whom axial plane is generally rectified with a strong to moderate dip towards east; (4) the emplacement of granites, at the origin of an important polyphased contact metamorphism, particularly marked by the recrystallization of cordierite, followed by a new penecontemporaneous folding phase of the second metamorphic manifestation (oriented biotites in S3 schistosity). The P3 folds, from the direction N05 to N80, associated with the P3 folding phase, show an axial plane schistosity S3 with a generally strong to moderate dip towards the west; (5) thurst faults affecting all the former structures; (6) late-hercynian fractures

Perimenopausal contraception in Turkish women: A cross-sectional study

Abstract Background Epidemiologic research has shown that perimenopausal contraception is an important medical issue, because women during the perimenopause still need effective contraception. The objective of the study was to assess the contraceptive choices of perimenopausal Turkish women. Methods This is a descriptive cross-sectional study that in a non – random fashion recruited 202 perimenopausal and naturally menopausal women who lived in a suburban area of Istanbul. Women who took part were aged between 45–59 years old. Chief database used to identify the suitable participants in the district. Subjects who voluntarily participated in the study were interviewed in their homes by the researcher. The analysis of the data was evaluated using percentages. Results The percentage of sexually active women among the participants was 87.6%. A large majority – 80.2% – of the participants did not have any idea of when they should bring contraception to an end. The method most commonly used was withdrawal (Coitus Interruptus), represented by 38.8%. In regard to the participants' choices of medical contraception, those being utilized were the IUD (24.3%), tubal sterilization (8.9%), condom (5.9%) and COC (6.4%). Additionally, 18% of women used other traditional methods including vaginal lavage, vaginal aspirin, and even inserting a small sponge presoaked with fresh lemon juice or cola deep into the vagina. Among the perimenopausal women who participated, the IUD was the most popular and appropriate contraceptive method. Conclusion Most perimenopausal Turkish women are still using traditional methods and women's knowledge about contraception in the menopausal stages is very limited. Health professionals should provide information about perimenopausal contraception.</p

Effect of thermophilic pre-composting of olive mill wastewaters on reproduction and growth of earthworms Eisenia andrei

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Nutrient recovery from olive by-products through vermicomposting with Eisenia andrei

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