Pressure-Temperature-Time Paths of Metamorphism

Linking Deformation and Metamorphism: Pressure-Temperature-time-deformation Paths through Quantitative Microstructural Analysis and Pseudosections

Pressure-Temperature-Time Paths of Regional Metamorphism I. Heat Transfer during the Evolution of Regions of Thickened Continental Crust

The development of regional metamorphism in areas of thickened continental crust is investigated in terms of the major controls on regional-scale thermal regimes. These are: the total radiogenic heat supply within the thickened crust, the supply of heat from the mantle, the thermal conductivity of the medium and the length and time scales of erosion of the continental crust. The orogenic episod...

Early Proterozoic ultrahigh pressure metamorphism: evidence from microdiamonds.

Microdiamonds from the Akluilâk minette dykes (Nunavut, Canada) are similar to diamonds formed in subducted metamorphic rocks. High concentrations of unaggregated nitrogen and positive delta(15)N suggest that the microdiamonds formed within rocks subducted to ultrahigh pressures before being sampled by the minette magma 1.8 billion years ago. This ultrahigh pressure metamorphism in North Americ...

Pressure - Temperature - Time Records of Shock in Meteorites

Introduction: The quantification of the transient pressure and temperature conditions that prevailed during shock events in terrestrial and extraterrestrial materials is essential for understanding the dynamics of the solar system formation and evolution. Shock processes can be studied at various levels: morphological traces (craters), transformations in rocks and minerals, comparisons between ...

Pressure-Temperature Paths and the Relationship Between Garnet Producing Reactions, Microstructural Truncations, and Mineral Zoning