Results 31 to 40 of about 11,494 (230)

Observation of centimetre-scale argon diffusion in alkali feldspars: implications for ⁴⁰Ar/³⁹Ar thermochronology [PDF]

, 2013
New data from a gem-quality feldspar from Itrongay, Madagascar, record naturally occurring 40Ar/39Ar age profiles which can be numerically modelled by invoking a single diffusion mechanism and show that microtexturally simple crystals are capable of ...
Flude, Stephanie, Halton, Alison M., Kelley, Simon P., Schwanethal, James, Sherlock, Sarah C., Wilkinson, Camilla M.   +5 more
core   +3 more sources

Optical and Spectroscopic Properties of Lorenzenite, Loparite, Perovskite, Titanite, Apatite, Carbonates from the Khibiny, Lovozero, Kovdor, and Afrikanda Alkaline Intrusion of Kola Peninsula (NE Fennoscandia)

Crystals, 2022
This manuscript deals with the analysis of significant rare earth elements (REE) minerals such as eudialyte, lorenzenite, loparite, perovskite, titanite, apatite, and carbonates.
Miłosz Huber, Daniel Kamiński, Grzegorz Czernel, Evgeni Kozlov   +3 more
doaj   +1 more source

Patterns of Late Cenozoic exhumation deduced from apatite and zircon U-He ages from Fiordland, New Zealand [PDF]

, 2005
New apatite and zircon (U-Th)/He ages from the Fiordland region of New Zealand's South Island expand on earlier results and provide new constraints on patterns of Late Cenozoic exhumation and cooling across this region.
Gurnis, M., House, M. A., Kamp, P. J. J., Sutherland, R.   +3 more
core   +2 more sources

Contribution of remote sensing techniques to the recognition of titanite occurrences at Gabal El-Degheimi area, Central Eastern Desert, Egypt

Egyptian Journal of Remote Sensing and Space Sciences, 2017
The present study aims at delimiting the titanite occurrences in the volcaniclastic metasediments and accessing the mineral chemistry of the titanite at Gabal El-Degheimi area.
Ahmed E. Khalil, Hatem M. El-Desoky, S.M. Salem   +2 more
doaj   +1 more source

Local Phenomena in meta-mict Titanite

Acta Physica Polonica A, 2010
Pure titanite is a mineral with chemical composition CaTiSiO5. Its structure consists of corner linked TiO6-octahedra, SiO4-tetrahedra and sevenfold coordinated Ca positions. In nature various impurities like U and Th can be incorporated in the structure showing alpha and beta radiation.
Bismayer, U., Paulmann, C., Groat, L., Zhang, M.   +3 more
openaire   +2 more sources

Element Fractionation and Correction Method for U-Pb Dating of Titanite by Laser Ablation-Inductively Coupled Plasms-Mass Spectrometry

Yankuang ceshi, 2020
BACKGROUND Isotope geochronology is a basic subject to explore the temporal and special evolution of geological bodies and geodynamics. The U-Pb dating technology of accessory minerals is the most widely used in isotope geochronology.
JIN Meng-qi, LI Yan-guang, WANG Peng, WANG Shuang-shuang, LI Wei-liang   +4 more
doaj   +1 more source

Metamorphic Evolution of Garnet-bearing Epidote-Barroisite Schist From the Meratus Complex in South Kalimantan, Indonesia [PDF]

, 2015
DOI:10.17014/ijog.2.3.139-156This paper presents metamorphic evolution of metamorphic rocks from the Meratus Complex in South Kalimantan, Indonesia.
Adachi, T. (Tatsuro), Asy’ari, A. (Amril), Nakano, N. (Nobuhiko), Osanai, Y. (Yasuhito), Setiawan, N. I. (Nugroho)   +4 more
core   +2 more sources

Simultaneous Magmatic and Hydrothermal Regimes in Alta–Little Cottonwood Stocks, Utah, USA, Recorded Using Multiphase U-Pb Petrochronology

Geosciences, 2020
Magmatic and hydrothermal systems are intimately linked, significantly overlapping through time but persisting in different parts of a system. New preliminary U-Pb and trace element petrochronology from zircon and titanite demonstrate the protracted and ...
Michael A. Stearns, John M. Bartley, John R. Bowman, Clayton W. Forster, Carl J. Beno, Daniel D. Riddle, Samuel J. Callis, Nicholas D. Udy   +7 more
doaj   +1 more source

Microstructures associated with the Sottunga-Jurmo shear zone and their implications for the 1.83–1.79 Ga tectonic development of SW Finland [PDF]

, 2010
This petrographic study of rock samples from the area of a large-scale shear zone, the Sottung-Jurmo shear zone, in SW Finland, illuminates the thermal development of and strain distribution within the rocks during the last development stages of the ...
Carl Ehlers, Taija Torvela
core   +1 more source

Titanite U-Pb dating by LA-Quadrupole-ICP-MS: analytical procedures and applications to Rhyacian metamorphic rocks of the Southeastern Guiana Shield [PDF]

Anais da Academia Brasileira de Ciências
We present a comprehensive set of LA-Q-ICP-MS U-Pb ages on titanite standards (Tory Hill, Khan, Mud Tank, and CKHB titanites) together with samples from the Southeastern Guiana Shield, as a geological application of the method implemented at the Pará-Iso
JOÃO ALBERTO E. PINTO, JEAN MICHEL LAFON, JOÃO M. MILHOMEM NETO, KEI SATO   +3 more
doaj   +1 more source