کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4535039 1326079 2009 15 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
From species abundance to opal input: Simple geometrical models of radiolarian skeletons from the Atlantic sector of the Southern Ocean
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات زمین شناسی
پیش نمایش صفحه اول مقاله
From species abundance to opal input: Simple geometrical models of radiolarian skeletons from the Atlantic sector of the Southern Ocean
چکیده انگلیسی

Radiolarian-based paleoceanographic reconstructions generally use the abundance of selected radiolarian species. However, the recent focus on the opal flux and the development of isotope measurements in biogenic opal and the organic matter embedded in it demands a better knowledge of the origin of the opal. We present here an estimation of the opal content of the skeleton of 63 radiolarian species from two sites in the Southern Ocean. The skeletons are modelled as associations of simple geometrical shapes, and the volume thus obtained is combined with opal density to obtain the amount of opal. These data are, thus, used to determine the most important opal carriers in the radiolarian assemblage in both cores.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Deep Sea Research Part I: Oceanographic Research Papers - Volume 56, Issue 5, May 2009, Pages 757–771
نویسندگان
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