کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5113369 1377928 2017 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Reconstruction of the late Holocene paleoenvironment of the western Beagle Channel (Argentina) based on a palynological analysis
ترجمه فارسی عنوان
بازسازی ناهنجاری محیط هالوژن اواخر کانال غربی باگل (آرژانتین) براساس یک تحلیل پالینولوژیک
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات زمین شناسی
چکیده انگلیسی
Palynological analysis was performed on sediment samples from Arroyo Baliza site (54° 51′ S, 68° 33′ W), western sector of the Beagle Channel, Tierra del Fuego, Argentina, in order to reconstruct the palaeoenvironmental history during the Holocene marine transgressive-regressive cycle in the Beagle Channel. The palynological analysis reveals the presence of a closed-canopy Nothofagus forest development in the coastal areas under a cold, wet and variable climate conditions during the late Holocene. The marine assemblage composition shows similarities to those modern assemblages recorded in the surface samples from the Beagle Channel, characterised by the dominance of Peridiniales taxa, suggesting environmental conditions during the late Holocene comparable to today. The increasing salinity during middle Holocene was accompanied by an increase in number and diversity of the microplanktonic assemblages, suggesting the gradual installation of a marine environment as it exists today in the Beagle Channel.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Quaternary International - Volume 442, Part A, 23 June 2017, Pages 2-12
نویسندگان
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