Results 41 to 50 of about 87,352 (275)
Grain size and transport biases in an Ediacaran detrital zircon record
Journal of Sedimentary Research, 2020 Detrital-zircon records of provenance are used to reconstruct paleogeography, sediment sources, and tectonic configuration. Recognition of biases in detrital-zircon records that result from grain-size-dependent processes adds new complexity and caution
M. Cantine +4 more
semanticscholar +1 more source
Frontiers in Earth Science, 2023 We present new LA-ICP-MS detrital zircon U-Pb age and trace element data of the Late Mesozoic sedimentary sequences from the western Shandong and Tanlu fault zone, with the aim to constrain the depositional ages and sedimentary sources.
Yuanku Meng +4 more
doaj +1 more source
Anomalous supply of bioessential molybdenum in mid-Proterozoic surface environments [PDF]
, 2016 We are grateful to A. Sandison and W. Thayalon for skilled technical support, and Mike Porter and an anonymous reviewer, who helped to clarify the manuscript.Peer ...
Lindgren, Paula, Parnell, John
core +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 +2 more
doaj +1 more source
Geology, 2019 Uranium-lead (U-Pb) geochronology studies commonly employ the law of detrital zircon: A sedimentary rock cannot be older than its youngest zircon.
T. Herriott +4 more
semanticscholar +1 more source
Tectonics, 2020 We have used U‐Pb zircon ages and Hf isotopic compositions for detrital zircons from Eocene and Cretaceous‐Triassic sedimentary rocks of the Makran accretionary complex (MAC, Iran) to understand the source and growth of the MAC during Mesozoic and ...
R. Esmaeili +9 more
semanticscholar +1 more source
A tonalitic analogue to ancient detrital zircon
Chemical Geology, 2018 Abstract A zircon population from an Archean tonalite sample from southern West Greenland has been used as a source analogue in order to test common methods and approaches applied to ancient detrital zircon populations. Measurements of U-Th-Pb, oxygen and Lu-Hf isotopes as well as rare earth element and Ti concentrations were made in these zircon ...
Kielman, Ross +3 more
openaire +4 more sources
Minimizing the effects of Pb loss in detrital and igneous U–Pb zircon geochronology by CA-LA-ICP-MS [PDF]
GeochronologyDetrital zircon geochronology by laser ablation–inductively coupled plasma–mass spectrometry (LA-ICP-MS) is a widely used tool for determining maximum depositional ages and sediment provenance, as well as reconstructing sediment routing pathways ...
E. E. Donaghy +3 more
doaj +1 more source
Frontiers in Earth Science, 2022 Understanding how depositional environments within a sedimentary system redistribute and sequester sediment is critical for interpreting basin-scale provenance trends.
Stephen C. Dobbs +4 more
doaj +1 more source
Malignant melanoma of the urethra: a rare histologic subdivision of vulvar cancer with a poor prognosis [PDF]
, 2012 Malignant melanoma of the urethra is a rare tumour that is difficult to diagnose and treat, resulting in a poor prognosis. In this paper, we present the case of a 65-year-old woman who was referred to a gynaecologist because of a urethral mass that ...
Alkatout, Ibrahim +8 more
core +2 more sources