کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4680063 1634904 2008 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Relation between neighbouring grains in the upper part of the NorthGRIP ice core — Implications for rotation recrystallization
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات علوم زمین و سیاره ای (عمومی)
پیش نمایش صفحه اول مقاله
Relation between neighbouring grains in the upper part of the NorthGRIP ice core — Implications for rotation recrystallization
چکیده انگلیسی

We propose a new method to investigate the relationships between neighbouring crystals and apply it to the textures measured along the upper 900 m of the NorthGRIP ice core. This method shows unexpected correlations between neighbours in the so-called normal grain growth regime, questioning the classical view on the onset of rotation recrystallization in ice-sheets. Moreover, the fractionation rate associated to the rotation recrystallization appears constant through time. Finally, grains with low-angle boundaries do not present a special distribution pattern of their c-axes. This suggests that rotation recrystallization is an isotropic process not affected by the direction of the macroscopic strain.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Earth and Planetary Science Letters - Volume 265, Issues 3–4, 30 January 2008, Pages 666–671
نویسندگان
, , , ,