Results 51 to 60 of about 1,148 (153)

Variations in the P‐T‐t of Deformation in a Crustal‐Scale Shear Zone in Metagranite

Geochemistry, Geophysics, Geosystems, 2020
Deformation in crustal‐scale shear zones occurs over a range of pressure‐temperature‐time (P‐T‐t) conditions, both because they may be vertically extensive structures that simultaneously affect material from the lower crust to the surface, and because ...
T. K. Cawood, J. P. Platt
doaj   +1 more source

Effects of fluid-rock interaction on 40Ar/39Ar geochronology in high-pressure rocks (Sesia-Lanzo Zone, Western Alps) [PDF]

, 2013
Author Posting. © The Author(s), 2013. This is the author's version of the work. It is posted here by permission of Elsevier B.V. for personal use, not for redistribution.
Halama, Ralf, Konrad-Schmolke, Matthias, Marschall, Horst R., Sudo, Masafumi, Wiedenbeck, Michael   +4 more
core   +1 more source

Location, Location, Location: Monazite Behaviour During UHT Metamorphism and Melt Crystallization

Journal of Metamorphic Geology, Volume 44, Issue 2, Page 158-175, February 2026.
ABSTRACT Monazite is a robust mineral for recording the suprasolidus evolution of migmatites and granulites. However, monazite commonly has diverse compositions and yields variable dates in a single sample; understanding the controls on monazite behaviour and composition during partial melting and melt crystallization are not always straightforward ...
Chris Yakymchuk, Jessica Gareau, Michael Williams   +2 more
wiley   +1 more source

Seeing through the Ottawan Overprint, Adirondack Mtns., NY: Integrating Microstructural Analysis, Geothermobarometry, and in-situ Monazite Petrochronology [PDF]

, 2020
Integrating field observation with petrochronology is critical for understanding the tectonometamorphic evolution of the North American Grenville Province.
Mistikawy, Justin
core   +3 more sources

Age and structure of the Shyok Suture in the Ladakh region of Northwestern India: Implications for slip on the Karakoram Fault System [PDF]

, 2015
A precise age for the collision of the Kohistan-Ladakh block with Eurasia along the Shyok suture zone (SSZ) is one key to understanding the accretionary history of Tibet and the tectonics of Eurasia during the India-Eurasia collision.
Ahmad, T., Bohon, W., Bornemann, N. L., Cronk, S. S., Hodges, K. V., van Soest, M. C., Wartho, Jo-Anne   +6 more
core   +1 more source

Interpreting Europium Anomalies in Zircon: The Importance of Source Redox

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 10, October 2025.
Abstract The sources of granitoids are variably oxidized due to the diversity of environments in which they form. This environmental and consequent chemical variability leads to differences in mineral assemblages, proportions, and compositions of ferric and ferrous iron‐bearing phases in these sources and in the resultant granitoids. Accessory minerals
Chris Yakymchuk, Christopher L. Kirkland
wiley   +1 more source

Thinning and Heating of Laramide Continental Lower Crust Recorded by Zircon Petrochronology

Geochemistry, Geophysics, Geosystems
Zircon grains from the metasedimentary lower crust of the Rio Grande Rift, New Mexico, preserve a metamorphic record of the transition from Laramide compression to Eocene extension.
J. H. Cipar, A. J. Smye, J. M. Garber, J. R. Reimink, A. R. C. Kylander‐Clark   +4 more
doaj   +1 more source

Petrochronology and Statistical Analysis to Integrate Different Types of Data to Solve Complex Earth Systems Problems [PDF]

, 2022
Complex Earth systems problems, like reconstructing orogens and calibrating the geologic time scale, require investigations that link time to geologic processes.
Harrigan, Claire Ostwald
core   +1 more source

Tracking Cu‐Fertile Sediment Sources via Multivariate Petrochronological Mixture Modeling of Detrital Zircons

Journal of Geophysical Research: Earth Surface, Volume 130, Issue 10, October 2025.
Abstract Whereas the ability to acquire petrochronological data from detrital minerals has exploded, development of tools to analyze and interpret the multivariate data sets has not kept pace. Herein, we present a case study, which applies the recently developed non‐negative Tucker‐1 decomposition (NNT1) method to a multivariate detrital zircon data ...
Joel E. Saylor, Nicholas Richardson, Naomi Graham, Robert G. Lee, Michael P. Friedlander   +4 more
wiley   +1 more source

Recent advances in petrochronology: from dates to ages and rates of deep orogenic processes

Comptes Rendus. Géoscience
In order to decipher the prevalent processes active at depth in orogenic systems, their time sequence and their rates have to be assessed. This is essentially done via absolute dating of accessory and rock-forming metamorphic minerals. The interpretation
Labrousse, Loic, Bonnet, Guillaume, François, Camille, Godet, Antoine, Gyomlai, Thomas   +4 more
doaj   +1 more source