Read e-book online Detrital thermochronology: Provenance analysis, exhumation, PDF

By Matthias Bernet, Cornelia Spiegel

ISBN-10: 0813723787

ISBN-13: 9780813723785

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Extra resources for Detrital thermochronology: Provenance analysis, exhumation, and landscape evolution of mountain belts (GSA Special Paper 378)

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Comparison of the different estimates of the relationship between ρs and Dα are shown in Figure 5. The dashed line shows the approximate equation (5). , 1995; Gray and Zeitler, 1997). The estimated ρs and Dα values were determined using the full equations (1, 2, 4), and a representative cooling age of 100 Ma. The solid lines show the trend for these data for different cooling ages, 10 and 500 Ma. The conclusion is that cooling age and Th/U ratio have only a minor influence on the relationship between ρs and Dα.

The results also compare well with the known distribution of bedrock cooling ages in each drainage area. On a regional scale, our data illustrate that a few samples can provide an overview of the fission-track age pattern of a whole orogen, which is useful for exhumation and provenance studies. Keywords: zircon, fission-track, provenance, exhumation, European Alps. INTRODUCTION Kamp, 2002). In this paper, we examine the ability of fissiontrack grain-age distributions of detrital zircon from modern river sediments to resolve bedrock cooling ages in an orogenic source region, and we consider the procedures used in this kind of study.

319–329. , 1984, Resolution of the age structure of the detrital zircon populations of two Lower Cretaceous sandstones from the Weald of England by fission track dating: Geological Magazine, v. 121, p. 269–277. , 1991, Constraints on the late thermotectonic evolution of the Western Alps: Evidence for episodic rapid uplift: Tectonics, v. 10, p. 758–769. , 1992, Crustal evolution of New Zealand: Evidence for age distributions of detrital zircons in Western Province paragneiss and Torlesse greywacke: Geochimica et Cosmochimica Acta, v.

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Detrital thermochronology: Provenance analysis, exhumation, and landscape evolution of mountain belts (GSA Special Paper 378) by Matthias Bernet, Cornelia Spiegel

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