T
T. Mark Harrison
Researcher at University of California, Los Angeles
Publications - 243
Citations - 38268
T. Mark Harrison is an academic researcher from University of California, Los Angeles. The author has contributed to research in topics: Zircon & Jack Hills. The author has an hindex of 94, co-authored 240 publications receiving 34673 citations. Previous affiliations of T. Mark Harrison include State University of New York System & University of California.
Papers
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Journal ArticleDOI
Geologic Evolution of the Himalayan-Tibetan Orogen
An Yin,T. Mark Harrison +1 more
TL;DR: A review of the geologic history of the Himalayan-Tibetan orogen suggests that at least 1400 km of north-south shortening has been absorbed by the orogen since the onset of the Indo-Asian collision at about 70 Ma as discussed by the authors.
Journal ArticleDOI
Zircon saturation revisited: temperature and composition effects in a variety of crustal magma types
E. Bruce Watson,T. Mark Harrison +1 more
TL;DR: In this article, the saturation behavior of zircon in crustal anatectic melts as a function of both temperature and composition has been studied and a model of Zr solubility given by: In D Zr Zircon/melt = −3.80−[0.85(M−1)]+12900/T where T is the absolute temperature, and M is the cation ratio (Na + K + 2Ca)/(Al · Si).
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Diffusion of 40Ar in biotite: Temperature, pressure and compositional effects
TL;DR: In this article, the authors measured radiogenic 40Ar loss from sized biotite (56% annite) samples following isothermalhydrothermal treatment have provided model diffusion coefficients in the temperature interval 600°C to 750°C, calculated on the assumption that Ar transport proceeds parallel to cleavage.
Journal ArticleDOI
Diffusion of 40Ar in hornblende
TL;DR: In this article, the authors measured radiogenic 40Ar loss from two compositionally contrasting hornblendes following isothermal-hydrothermal treatment have provided model diffusion coefficients in the temperature range of 750° C to 900° C.
Book
Geochronology and thermochronology by the [40]Ar/[39]Ar method
Ian McDougall,T. Mark Harrison +1 more
TL;DR: In this article, the 40AR/39AR dating method is used to calculate the closure temperature of first-order loss in a plane sheet and the diffusion equation is derived from the first order loss.