Results 111 to 120 of about 25,421 (273)
Ductile Extrusion Triggered by Continental Collision in NE Brazil
Terra Nova, EarlyView.ABSTRACT The Borborema Province in northeastern Brazil hosts one of the world's largest strike‐slip shear zone networks, active during the late Neoproterozoic assembly of West Gondwana. Whether these shear zones initiated during active continental collision or as a post‐orogenic response to far‐field stresses remains debated.
L. R. Tesser +6 more
wiley +1 more source
Metamorphism of Pelitic Sediments
, 2002 This PowerPoint presentation includes 30 slides discussing metamorphism in pelitic rocks. The presentation uses AKF diagrams to describe Barrovian zones of metamorphism in metapelites.
John Winter
core
Metamorphism in the New England Orogen, eastern Australia: a review
, 2020 This paper summarises current knowledge on metamorphism within the entire New England Orogen (NEO) of eastern Australia. Rocks recording metamorphic assemblages characteristic of each of the three metamorphic facies series (high, medium and low P/T) have
S. Piazolo (8391375) +2 more
core +1 more source
Emergence of Continents Stabilized the Bioavailability of Boron
Terra Nova, EarlyView.ABSTRACT Boron is an essential element for the development of life on Earth; borates stabilize ribose in prebiotic reactions and facilitate metabolism in higher plants. There is, however, a relatively narrow surface boron concentration range over which borates stabilize and serve as a micronutrient rather than a toxin.
Brendan V. Dyck, Jon Wade
wiley +1 more source
Post-Acadian metamorphism in the Appalachians
, 1988 Well-documented post-Acadian metamorphism occurs at three locales along the eastern flank of the Appalachians, where it has affected Avalonian basement and/or Carboniferous cover.
Murray, Daniel P.
core +1 more source
Zircon dissolution in a ductile shear zone, Monte Rosa granite gneiss, northern Italy [PDF]
, 2008 The sizes, distributions and shapes of zircon grains within variably deformed granite gneiss from the western Alps have been studied. Zircon shows numerous indicators of a metamorphic response in both the host gneiss and a 5 cm wide continuous ductile ...
Dempster, T. J. +4 more
core +1 more source
Radiation characteristics of coals at different stages of metamorphism
Записки Горного институтаThe formation of deposits and subsequent metamorphic processes that affect concentrations of radioactive elements in coal can indicate ongoing geological activities, therefore, analyzing trends in the radiation characteristics of coal throughout the ...
Nadezhda L. Aluker +2 more
doaj
METAMORPHISM OF THE MEGUMA GROUP OF NOVA SCOTIA
, 1966 The Meguma group of lithic greywacke, feldspathic quartzite, slate siltstone, and argillite is Early Ordovician or older in age and has undergone both regional and contact metamorphism.
F. C. Taylor, E. A. Schiller
core +1 more source
Contact Metamorphism in Southern California [PDF]
, 1954 A highly condensed introduction to "Contact metamorphism in southern California" is obviously not the place in which to indulge in semantic niceties nor to engage in terminological tussles, and thus the title is not intended to reflect a carefully ...
Campbell, Ian
core
Metamorphism in IOCG Systems: Contact Metamorphism in the Candelaria-Punta del Cobre District, Chile
, 2023 Near Copiapó, Chile, volcanic-dominated rocks of the Early Cretaceous Punta del Cobre Formation host Fe-oxide(-Cu-Au) (“IOCG”) mineralization with varied development of metamorphic mineral assemblages. Western occurrences, such as the Candelaria deposit,
Huggler, Sadie Meradyth Del
core