Universität zu Köln

King, G. E., Herman, F., Lambert, R., Valla, P. G. and Guralnik, B. (2016). Multi-OSL-thermochronometry of feldspar. Quat. Geochronol., 33. S. 76 - 88. OXFORD: ELSEVIER SCI LTD. ISSN 1878-0350

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Abstract

Optically stimulated luminescence (OSL)-thermochronometry has recently been proposed as a tool capable of resolving cooling histories from the top 1-2 km of the Earth's crust. This is beyond the resolution of most low-temperature thermochronometric systems, and it offers a new opportunity to investigate the interactions between climate, tectonics and surface processes over Quaternary timescales. Here we present a multi-OSL-thermochronometer which exploits the different thermal stabilities of different temperature infra-red stimulated luminescence (IRSL) signals from K- and Na-rich K-feldspar extracts, utilising the established multi-elevated-temperature (MET) measurement protocol (Li and Li, 2011. Luminescence dating of K-feldspar from sediments: A protocol without anomalous fading correction. Quaternary Geochronology 6, 468-479). The theoretical aspects of multi-OSL-thermochronometry are discussed, prior to validation with an example from the eastern Himalayan syntaxis, one of the most rapidly exhuming settings on Earth. Our results show that multi-OSL-thermochronometry of feldspar is able to resolve rock cooling histories over timescales <= 0.2 Ma and provides much tighter constraint on late-stage cooling histories than single-system OSL-thermochronometry. (C) 2016 Published by Elsevier B.V.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code King, G. E. UNSPECIFIED UNSPECIFIED UNSPECIFIED Herman, F. UNSPECIFIED UNSPECIFIED UNSPECIFIED Lambert, R. UNSPECIFIED UNSPECIFIED UNSPECIFIED Valla, P. G. UNSPECIFIED UNSPECIFIED UNSPECIFIED Guralnik, B. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-274853
DOI:	10.1016/j.quageo.2016.01.004
Journal or Publication Title:	Quat. Geochronol.
Volume:	33
Page Range:	S. 76 - 88
Date:	2016
Publisher:	ELSEVIER SCI LTD
Place of Publication:	OXFORD
ISSN:	1878-0350
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language INFRARED-STIMULATED LUMINESCENCE; NAMCHE-BARWA SYNTAXIS; (U-TH)/HE THERMOCHRONOMETRY; CLOSURE TEMPERATURE; CLIMATE-CHANGE; K-FELDSPAR; DOSE-RATE; RATES; EROSION; STABILITY Multiple languages Geography, Physical; Geosciences, Multidisciplinary Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/27485