Determining cooling rates from mica 40 Ar/ 39 Ar thermochronology data: Effect of cooling path shape
نویسندگان
چکیده
منابع مشابه
Downstream development of a detrital cooling-age signal: Insights from Ar/Ar muscovite thermochronology in the Nepalese Himalaya
The character and distribution of cooling ages in modern river sediment provide useful constraints on rates and patterns of uplift and erosion within actively deforming mountain ranges. Such sediment effectively samples all locations within the catchment area, irrespective of remoteness. We evaluate how successfully detrital cooling ages may be used to constrain hinterland erosion rates by exam...
متن کاملLate Cenozoic evolution of the eastern margin of the Tibetan Plateau:Inferences from <supscr>40</supscr>Ar/<supscr>39</supscr>Ar and (U-Th)/He thermochronology
[1] High topography in central Asia is perhaps the most fundamental expression of the Cenozoic Indo-Asian collision, yet anunderstandingof the timingandratesofdevelopmentof theTibetan Plateau remains elusive. Here we investigate the Cenozoic thermal historiesofrocksalongtheeasternmarginof theplateauadjacent to the Sichuan Basin in an effort to determine when the steep topographic escarpment tha...
متن کاملAr/Ar THERMOCHRONOLOGY OF A FOSSIL LL CHONDRITE FROM MOROKWENG CRATER, SOUTH AFRICA
SOUTH AFRICA. F. Jourdan, W. Maier, M. A. G. Andreoli and I. McDonald. Western Australian Argon Isotope Facility, Applied Geology & JdL-CMS, Curtin University of Technology, GPO Box U1987, Perth WA 6845, Australia ([email protected]). Centre for Exploration Targeting, 35 Stirling Highway Crawley WA 6009, Australia. South African Nuclear Energy Corporation, PO Box 582, Pretoria 0001, South...
متن کاملCooling rates of seven hexahedrites
AbsiractCooling rates for seven hexahedrites. (Uwet. Coahuila. Walker County, Lombard. Quillagua. Hex River Mountains and Tocopilla) have been determined using a ternary diffusion controlled phase growth analysis developed by the authors. The model is applied to the exsolution and growth of plate phosphides in the kamacite phase of hexahedrites during cooling of the meteorite in its parent body...
متن کاملLong - term cosmogenic 3 He production rates ( 152 ka ^ 1 . 35 Ma ) from 40 Ar / 39 Ar dated basalt £ ows at 29 3 N latitude Tibor
A set of time integrated cosmogenic 3He production rates in olivines for the last 1.35 Ma are presented. We investigated three basaltic lava flow tops from Lanzarote, Canary Islands, Spain. The 40Ar/39Ar ages determined for those basalt flows by incremental laser heating of leached groundmass samples are 152 þ 26 ka, 281 þ 19 ka and 1.35 þ 0.01 Ma ( þ 2c). Three or four different olivine phenoc...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Terra Nova
سال: 2019
ISSN: 0954-4879,1365-3121
DOI: 10.1111/ter.12390