کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8916348 | 1642038 | 2018 | 54 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Palaeoenvironmental assessment of Early Cretaceous limnic ostracods from the Alagamar Formation, Potiguar Basin, NE Brazil
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
فسیل شناسی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Source rocks from the Alagamar Formation were analysed and fifteen non-marine ostracod species and one foraminifer species were identified. Thecamoebians, gastropods, fish teeth and incertae sedis material also occurred. Among these fossils, an agglutinated foraminifer, Gaudryinella sp. aff. G. sherlocki, and occurrences of foraminiferal organic linings, indicate deposition under transitional marine (paralic) influence. Harbinia crepata is considered holoeuryhaline, Paracypria? elongata brackish stenohaline and the other ostracods are freshwater euryhaline. Limnocytheridae ostracods together with foraminifers occurred in intercalated beds, and this pattern of changes in associations is herein interpreted as a record of temporal changes, characteristic of transitional palaeoenvironments. Previous studies on biomarkers and some articles dealing with palynomorphs also suggest that at least part of this unit was deposited in lagoonal conditions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cretaceous Research - Volume 85, May 2018, Pages 266-279
Journal: Cretaceous Research - Volume 85, May 2018, Pages 266-279
نویسندگان
Dermeval A. Do Carmo, André Luiz D. Spigolon, Edi M. Guimarães, Martha Richter, João G. Mendonça-Filho, Xi Dangpeng, Guilherme M. Caixeta, Amanda Moreira Leite,