کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6448247 | 1642074 | 2014 | 20 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Dinoflagellate biostratigraphy of the Arowhanan Stage (upper Cenomanian-lower Turonian) in the East Coast Basin, New Zealand
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
![عکس صفحه اول مقاله: Dinoflagellate biostratigraphy of the Arowhanan Stage (upper Cenomanian-lower Turonian) in the East Coast Basin, New Zealand Dinoflagellate biostratigraphy of the Arowhanan Stage (upper Cenomanian-lower Turonian) in the East Coast Basin, New Zealand](/preview/png/6448247.png)
چکیده انگلیسی
A new dinoflagellate zonation scheme for the New Zealand Arowhanan Stage (upper Cenomanian-lower Turonian) is proposed based on a study of the dinoflagellate assemblage from four onshore East Coast Basin sections, including the boundary stratotype section for the Arowhanan Stage. The existing Endoceratium ludbrookiae Zone is emended; its top now coincides approximately with the base of the Arowhanan Stage, at the highest occurrence of Endoceratium turneri. Three new interval zones are proposed above it: Ascodinium serratum Zone, Cyclonephelium clathromarginatum Zone and Hapsocysta peridictya Zone. The three zones together cover all but the uppermost part of the Arowhanan Stage. The Cenomanian/Turonian (C/T) stage boundary is located above the top of the Hapsocysta peridictya Zone, below the Arowhanan/Mangaotanean stage boundary. The boundary between the inoceramid bivalve Magadiceramus rangatira haroldi Zone and Magadiceramus rangatira rangatira Zone, which informally subdivides the Arowhanan into lower and upper substages, is located in the upper part of the Cyclonephelium clathromarginatum Zone. The distribution pattern of key dinoflagellate taxa in the Mangaotane Stream section indicates that the C/T boundary interval may be condensed or missing from that section. The new dinoflagellate Pareodinia mangaotanensis, which is restricted to the Arowhanan Stage, is described from the sections.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cretaceous Research - Volume 48, March 2014, Pages 205-224
Journal: Cretaceous Research - Volume 48, March 2014, Pages 205-224
نویسندگان
Poul Schiøler, James S. Crampton,