کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9463097 | 1622389 | 2005 | 19 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Planktonic foraminifers across the Bonarelli Event (OAE2, latest Cenomanian): The Italian record
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
فرآیندهای سطح زمین
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![عکس صفحه اول مقاله: Planktonic foraminifers across the Bonarelli Event (OAE2, latest Cenomanian): The Italian record Planktonic foraminifers across the Bonarelli Event (OAE2, latest Cenomanian): The Italian record](/preview/png/9463097.png)
چکیده انگلیسی
A high-resolution, quantitative study of the planktonic foraminiferal assemblages across the Bonarelli Level (OAE2, latest Cenomanian) of Italy from different areas and geological settings, has allowed the recognition of several events and biotic changes, including acmes and crises of different genera. It provides evidence of a progressive and rapid change of palaeoenvironmental conditions, reaching a climax coincident with the Bonarelli Event, and of the subsequent, gradual, although not complete, resumption of previous conditions. The observed pattern is illustrated by marked changes in the assemblages that indicate five discrete phases of environmental perturbation within the marine ecosystem. Though there are several similarities, our analyses highlight that each section has its own peculiarities, clearly indicating more or less extreme environmental conditions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Palaeogeography, Palaeoclimatology, Palaeoecology - Volume 224, Issues 1â3, 15 August 2005, Pages 167-185
Journal: Palaeogeography, Palaeoclimatology, Palaeoecology - Volume 224, Issues 1â3, 15 August 2005, Pages 167-185
نویسندگان
Rodolfo Coccioni, Valeria Luciani,