Results 201 to 210 of about 204,393 (382)

The Chamrousse Ophiolite (Western Alps, France): Relict of a Devono‐Carboniferous Ocean

open access: yesTerra Nova, EarlyView.
ABSTRACT The Chamrousse ophiolite (Western Alps, France) is one of the best‐preserved Variscan relicts of Cambro‐Ordovician oceanisation within the northern Gondwana margin. This study presents new in situ U–Pb isotope analyses on zircon grains from that ophiolite, revealing that the oceanic stage in Chamrousse has occurred 150 Ma later than estimated.
Maureen Gunia   +6 more
wiley   +1 more source

Schist Belts of the Benin‐Nigeria Shield Reveal a Neoproterozoic History

open access: yesTerra Nova, EarlyView.
ABSTRACT Belts of metasedimentary rocks (schist belts) in the Benin‐Nigeria Shield (BNS) are investigated for the first time using U–Pb dating and Lu‐Hf isotope analysis of detrital zircons. We report maximum depositional ages that place their deposition firmly in the Neoproterozoic and link them with strata in the Dahomey Belt, the central African ...
Axel Hofmann   +6 more
wiley   +1 more source

Intermittent Brittle and Ductile Deformation as Recorded by Dating of Ultramylonites and Pseudotachylytes in Extending Continental Crust (Ivrea‐Verbano Zone, Italy)

open access: yesTerra Nova, EarlyView.
ABSTRACT Mylonites and pseudotachylytes play a crucial role in defining the rheology of extending continental crust. In this context, determining the age of brittle‐ductile deformation is fundamental to understanding the rifting evolution stages. Here, we investigate the Premosello Shear Zone, an extensional structure of the Ivrea‐Verbano lower crust ...
Stefania Corvò   +3 more
wiley   +1 more source

Applications for cell‐free fetal DNA testing beyond common aneuploidy

open access: yesThe Obstetrician &Gynaecologist, EarlyView.
Key content Cell‐free fetal DNA (cffDNA) screening test performance for sex chromosome aneuploidies (SCAs), copy number variants (CNVs), rare autosomal trisomies (RATs) and single gene disorders. cffDNA screening for detection of pre‐eclampsia and malignancy. Investigation of recurrent miscarriage using cffDNA.
Gemma Ferguson   +2 more
wiley   +1 more source

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