کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4466995 1622238 2012 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The use of pollen floras as a tool to estimate palaeoaltitude of mountains: The eastern Pyrenees in the Late Neogene, a case study
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فرآیندهای سطح زمین
پیش نمایش صفحه اول مقاله
The use of pollen floras as a tool to estimate palaeoaltitude of mountains: The eastern Pyrenees in the Late Neogene, a case study
چکیده انگلیسی

Northern Hemisphere vegetation is generally zoned as a consequence of latitudinal and altitudinal gradients. Temperature reconstruction from three successive pollen floral assemblages (of Tortonian, Messinian and Zanclean age) from the eastern Pyrenees has been used to estimate the altitudinal evolution of the uplifted Cerdanya Basin and its surrounding massifs. A new method has been developed for the uplifted basins, which completes that already applied to pollen floras from coastal marine deposits close to mountains. In contrast to previous hypotheses, it seems that the eastern Pyrenees occurred at a lower altitude in the Late Miocene before continuous uplift began 10 Ma ago. The rate of this uplift ranged between 0.06 and 0.12 mm/yr.


► Pollen floras allow altitudes of eastern Pyrenees at 10, 7–6 and 5 Ma to be estimated.
► A new method is applied to estimation of palaeoaltitudes of the Cerdanya uplifted basin.
► Topographic variation existed in the region before constant uplift since 10 Ma.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Palaeogeography, Palaeoclimatology, Palaeoecology - Volumes 321–322, 1 March 2012, Pages 41–54
نویسندگان
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