کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4674783 1634391 2015 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Isotopic Geochemistry of Panama Rivers
ترجمه فارسی عنوان
ژئوشیمی ایزوتوپ راماهای پاناما
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات علم هواشناسی
چکیده انگلیسی

River water samples collected from 78 watersheds rivers along a 500-km transect across a Late Cretaceous-Tertiary andesitic volcanic arc terrane in west-central Panama provide a synoptic overview of riverine geochemistry, chemical denudation, and CO2 consumption in the tropics. D/H and 18O/16O relationships indicate that bedrock dissolution of andesitic arc crust in Panama is driven by water-rock interaction with meteoric precipitation as it passes through the critical zone, with no evidence of a geothermal or hydrothermal input. Sr-isotope relationships suggest a geochemical evolution for Panama riverine waters that involves mixing of bedrock pore water with water having 87Sr/86Sr ratios between 0.7037-0.7043 and relatively high Sr-contents with waters of low Sr content that enriched in radiogenic Sr that are diluted by infiltrating rainfall to variable extents.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Procedia Earth and Planetary Science - Volume 13, 2015, Pages 108-111