Results 1 to 10 of about 484 (157)

Radiation damage allows identification of truly inherited zircon [PDF]

Communications Earth & Environment, 2022
True inherited zircon grains, that are older than the rocks in which they are found, may be discriminated from zircon grains that represent contamination by analysing radiation damage determined by Raman ...
A Bjerga, Leif-Erik Rydland Pedersen, Rolf Birger Pedersen   +2 more
exaly   +5 more sources

Differentiating between Inherited and Autocrystic Zircon in Granitoids [PDF]

Journal of Petrology, 2020
AbstractInherited zircon, crystals that did not form in situ from their host magma but were incorporated from either the source region or assimilated from the wall-rock, is common but can be difficult to identify. Age, chemical and/or textural dissimilarity to the youngest zircon fraction are the primary mechanisms of distinguishing such grains ...
Hugo K H Olierook, Christopher L Kirkland, Kristoffer Szilas   +2 more
exaly   +4 more sources

Provenance of the Papuan Peninsula (Papua New Guinea): Zircon Inheritance from Miocene–Pliocene Volcanics and Volcaniclastics

Geosciences, 2023
Plate tectonic reconstructions of Papua New Guinea prior to the late Cenozoic are characterized by a lack of provenance data to constrain the relative origin of the allochthonous terranes.
Robert J. Holm, Kelly Heilbronn, Dulcie Saroa, Gideon Maim   +3 more
doaj   +3 more sources

Zircon Inheritance Refines the Cambrian Orogenic Architecture of Southeast Australia

Tektonika
The Selwyn Block is one of the few accreted terranes identified in the vast Paleozoic Tasmanides of eastern Australia and its incorporation into this orogen marks a first-order event in the tectonic evolution of the Pacific margin of Gondwana.
Jacob Mulder, Jacqueline Halpin, Laura Morrissey, Yousef Zoleikhaei, John Everard, Sebastien Meffre, Mike Hall, Oliver Nebel, Peter Cawood   +8 more
doaj   +4 more sources

Poly-Orogenic Melting of Metasedimentary Crust From a Granite Geochemistry and Inherited Zircon Perspective (Southern Calabria-Peloritani Orogen, Italy)

Frontiers in Earth Science, 2019
Inherited zircon ages and geochemical features of late Cadomian and late Variscan granitoids from the north-eastern Peloritani Mountains (NE Sicily) and the western Aspromonte Massif (SW Calabria) shed new light on the sources and processes involved in ...
Patrizia Fiannacca, Ian S Williams, Rosolino Cirrincione   +2 more
exaly   +3 more sources

Late Cenozoic exhumation in the eastern Junggar Basin: Evidence from zircon (U-Th)/He ages of combustion metamorphic rocks. [PDF]

PLoS ONE
Since the Cenozoic, the peripheral orogenic belts around the Junggar Basin have undergone substantia uplift in response to far-field deformation associated with the India-Asia collision.
Bin Chen, Pan Liu, Yan Dong, Changjuan Feng, Zhuang Zhao, Chaoqun Yang, Yixin Dong   +6 more
doaj   +2 more sources

A rapid transition from subduction to Barrovian metamorphism: geochronology of mafic–ultramafic relicts of oceanic crust in the Central Alps, Switzerland [PDF]

Swiss Journal of Geosciences
Relicts of subducted oceanic lithosphere provide key information for the tectonic reconstructions of convergent margins. In the Central Alps, such relicts occur as isolated mafic–ultramafic lenses within the migmatites of the southern Adula nappe and ...
Kim Lemke, Daniela Rubatto, Jörg Hermann   +2 more
doaj   +2 more sources

Zirconium-bearing accessory minerals in UK Paleogene granites: textural, compositional, and paragenetic relationships [PDF]

European Journal of Mineralogy, 2021
The mineral occurrences, parageneses, textures, and compositions of Zr-bearing accessory minerals in a suite of UK Paleogene granites from Scotland and Northern Ireland are described.
H. E. Belkin, R. Macdonald, R. Macdonald
doaj   +1 more source

Provenance study of Phanerozoic rocks from the Cordillera Real of Bolivia

Brazilian Journal of Geology, 2021
U/Pb ages of detrital zircon from two samples of Ordovician sediments were determined and, based on similar published data, were compared with xenocrystal inheritance of Triassic and Oligocene granitoids of the Cordillera Real in order to better ...
Alvaro Rodrigo Iriarte, Umberto Giuseppe Cordani, Miguel Basei   +2 more
doaj   +1 more source

Cadomian/Pan-African consolidation of the Iberian Massif assessed by its detrital and inherited zircon populations: is the ~610Ma age peak a persistent Cadomian magmatic inheritance or the key to unravel its Pan-African basement?

Geologica Acta, 2022
This work assessed the age distribution of Cadomian/Pan-African orogenic events (550-590 and 605-790Ma, respectively) in several zones of Iberian Massif by means of detrital and inherited zircon analysis compilation. Detrital zircon age spectra show that
Martim Chichorro, Ana Rita Solá, Telmo M. Bento dos Santos, João Lains Amaral, Lourenço Crispim   +4 more
doaj   +1 more source