Results 21 to 30 of about 1,148 (153)

Phase Relations, Reaction Sequences and Petrochronology [PDF]

Reviews in Mineralogy and Geochemistry, 2017
At the core of petrochronology is the relationship between geochronology and the petrological evolution of major mineral assemblages. The focus of this chapter is on outlining some of the available strategies to link inferred reaction sequences and microstructures in metamorphic rocks to the ages obtained from geochronology of accessory minerals and ...
Yakymchuk, C., Clark, Christopher, White, R.   +2 more
openaire   +4 more sources

U–Pb SHRIMP zircon dating and geochemistry of metapelites from the Shillong Meghalaya Gneissic Complex, NE India: Implications for nature of protolith and tectonic setting

Geosystems and Geoenvironment, 2023
The Sonapahar area of Shillong Meghalaya Gneissic Complex (SMGC) is an extension of the Central India Tectonic Zone within the Precambrian Indian shield.
Shyam Bihari Dwivedi, Pratigya Pathak, Kevilhoutuo Theunuo, Ravi Ranjan Kumar   +3 more
doaj   +1 more source

Resolving the timescales of magmatic and hydrothermal processes associated with porphyry deposit formation using zircon U–Pb petrochronology [PDF]

Geochronology, 2020
Understanding the formation of economically important porphyry Cu–Au deposits requires knowledge of the magmatic-to-hydrothermal processes that act within the much larger magmatic system and the timescales on which they occur.
S. J. E. Large, S. J. E. Large, J.-F. Wotzlaw, M. Guillong, A. von Quadt, C. A. Heinrich, C. A. Heinrich   +6 more
doaj   +1 more source

Some thoughts about eclogites and related rocks [PDF]

European Journal of Mineralogy, 2023
The past 40 years have been a golden age for eclogite studies, supported by an ever wider range of instrumentation and enhanced computational capabilities, linked with ongoing developments in thermobarometry and geochronology.
M. Brown
doaj   +1 more source

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

Campaign-style U-Pb titanite petrochronology: along-strike variations in timing of metamorphism in the Himalayan Metamorphic Core [PDF]

, 2018
Present-day along-strike heterogeneities within the Himalayan orogen are seen at many scales, from variations within the deep architecture of the lithospheric mantle, to differences in geomorphologic surface processes.
Cottle, John M., Kylander-Clark, Andrew, Mottram, Catherine Mary   +2 more
core   +1 more source

Garnet–monazite rare earth element relationships in sub-solidus metapelites: a case study from Bhutan [PDF]

, 2018
A key aim of modern metamorphic geochronology is to constrain precise and accurate rates and timescales of tectonic processes. One promising approach in amphibolite and granulite-facies rocks links the geochronological information recorded in zoned ...
Argles, Tom W., Greenwood, Lucy V., Harris, Nigel B. W., Parrish, Randall R., Roberts, Nick M. W., Warren, Clare J.   +5 more
core   +9 more sources

Slip inversion along inner fore-arc faults, eastern Tohoku, Japan [PDF]

, 2017
The kinematics of deformation in the overriding plate of convergent margins may vary across timescales ranging from a single seismic cycle to many millions of years.
Fisher, Donald M., Kirby, Eric, Oakley, David, Regalla, Christine, Taylor, Stephanie   +4 more
core   +2 more sources

Magmatic record of India-Asia collision [PDF]

, 2015
This work was financially co-supported by Chinese Academy of Sciences (XDB03010301) and other Chinese funding agencies (Project 973: 2011CB403102 and 2015CB452604; NSFC projects: 41225006, 41273044, and 41472061).New geochronological and geochemical data
Cawood, Peter Anthony, Chung, Sun-Lin, Liu, Sheng-Ao, Mo, Xuan-Xue, Niu, Yaoling, Wang, Qing, Wu, Fu-Yuan, Zhao, Zhi-Dan, Zhu, Di-Cheng   +8 more
core   +1 more source

Mass transfer and element redistribution during chloritization of metamorphic biotite in a metapelite: insights from compositional mapping

Mineralogia, 2023
Fluid-driven reactions are common in the upper crust, leading to mineral replacement and element redistribution on a kilometer to a micron scale. One common fluid-induced reaction is the chloritization of biotite.
Faehnrich Karol, Kośmińska Karolina, Majka Jarosław   +2 more
doaj   +1 more source