کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1045988 | 944849 | 2009 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Tectonics, sea-level changes and palaeoenvironments in the early Pleistocene of Rome (Italy)
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
زمین شناسی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Tectonics, sea-level changes and palaeoenvironments in the early Pleistocene of Rome (Italy) Tectonics, sea-level changes and palaeoenvironments in the early Pleistocene of Rome (Italy)](/preview/png/1045988.png)
چکیده انگلیسی
The historical site of the Monte Mario lower Pleistocene succession (Rome, Italy) is an important marker of the Pliocene/Pleistocene boundary. Recently, the Monte Mario site was excavated and restudied. A spectacular angular unconformity characterizes the contact between the Monte Vaticano and the Monte Mario formations, which marks the Pliocene/Pleistocene boundary. Biostratigraphical analyses carried out on ostracod, foraminifer, and calcareous nannofossil assemblages indicate an Early Pliocene age (topmost Zanclean, 3.81-3.70Â Ma) for the underlying Monte Vaticano Formation, whereas the Monte Mario Formation has been dated as early Pleistocene (Santernian, 1.66-1.59Â Ma). Palaeomagnetic analyses point to C2Ar and C1r2r polarity chrons for the Monte Vaticano and the Monte Mario formations, respectively. The Monte Mario Formation consists of two obliquity-forced depositional sequences (MM1 and MM2) characterized by transgressive systems tracts of littoral marine environments at depths, respectively, of 40-80Â m and 15-20Â m. The data obtained from foraminifer and ostracod assemblages allow us to reconstruct early Pleistocene relative sea-level changes near Rome. At the Plio/Pleistocene transition, a relative sea-level drop of at least 260Â m occurred, as a result of both tectonic uplift of the central Tyrrhenian margin and glacio-eustatic changes linked to early Pleistocene glaciation (Marine Isotope Stage 58).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Quaternary Research - Volume 72, Issue 1, July 2009, Pages 143-155
Journal: Quaternary Research - Volume 72, Issue 1, July 2009, Pages 143-155
نویسندگان
Domenico Cosentino, Paola Cipollari, Letizia Di Bella, Alessandra Esposito, Costanza Faranda, Guido Giordano, Elsa Gliozzi, Massimo Mattei, Ilaria Mazzini, Massimiliano Porreca, Renato Funiciello,