Výsledky vyhledávání - "Sherwood W. Wise"

Calcareous Nannofossil Stratigraphy across the Paleocene-Eocene Transition at the Gunnah Section, Farafra Oasis, Western Desert, Egypt

Autor: Sherwood W. Wise, Atef M. Kasem, Esam Zahran, Mahmoud M. Faris, Sherif Farouk

Publikováno v: The Journal of Geology. 128:371-387

Calcareous nannofossil, carbonate content, and δ18O and δ13C data were utilized to reveal the nature of the Paleocene-Eocene (P-E) boundary at the Gunnah section, Western Desert, Egypt. The...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d97b83d56716eda511ad246b7f33cbfb
https://doi.org/10.1086/709359

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The Danian sediments and the K/Pg boundary determination using calcareous nannofossil from Sulaimani area, Kurdistan Region/Iraq

Autor: Basim A. Al-Qayim, Soran O. A. Kharajiany Kharajiany, Sherwood W. Wise

Publikováno v: Carbonates and Evaporites. 35

The nature of the Cretaceous–Paleogene (K/Pg) boundary in the Kurdistan region of northeastern Iraq is still under debate. Most studies have considered the Danian sediments to be mostly missing. Another hypothesis suggests that a conglomerate repre

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https://doi.org/10.1007/s13146-020-00609-1

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Calcareous nannofossil changes linked to climate deterioration during the Paleocene–Eocene thermal maximum in Tarim Basin, NW China

Autor: Dangpeng Xi, Mihaela C. Melinte-Dobrinescu, Wenxin Cao, Xiaoqiao Wan, Sherwood W. Wise, Tian Jiang

Publikováno v: Geoscience Frontiers, Vol 9, Iss 5, Pp 1465-1478 (2018)

The Paleocene–Eocene Thermal Maximum (PETM) event was a dramatic global warming ∼55.93 Ma ago that resulted in biological extinction events, lithological changes, and major deviations in δ13C and δ18O. The southwestern Tarim Basin of China expo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9d3bb73bff3544bcc06ba052964a054e
http://www.sciencedirect.com/science/article/pii/S1674987118300902

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Fine structure and ecology of Nanoneis longta in the northeastern Gulf of Mexico with a revised definition of the species

Autor: James A. Nienow, Wade H. Jeffrey, Sherwood W. Wise, Richard A. Snyder

Publikováno v: Diatom Research. 32:43-58

A population of the rarely reported diatom Nanoneis longta was observed over a period of more than two years in the northeastern Gulf of Mexico. This permitted a detailed examination of the fine structure of the valve in scanning and transmission ele

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::84b3388320e10f2bf5698884726532d2
https://doi.org/10.1080/0269249x.2016.1268978

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Contrasting response of the calcareous nannoplankton communities after the Eocene hyperthermal events in the tropical Atlantic Ocean

Autor: Yuanda Lei, Ying Cui, Yang Wang, Shijun Jiang, Sherwood W. Wise

Publikováno v: Marine Micropaleontology. 129:24-31

Latest Paleocene and early Eocene hyperthermals were geologically brief, profound environmental perturbations caused by massive additions of 13C-depleted carbon to the ocean-atmosphere system, and therefore provide ancient analogs to assess the impac

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::dad4756bdddcba8156002c3bd8b0ccd2
https://doi.org/10.1016/j.marmicro.2016.11.001

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Upper Paleocene-lower Eocene calcareous nannofossil stratigraphy at the Misheiti Section, Central Sinai, Egypt

Autor: Atef M. Kasem, Sherif Farouk, Esam Zahran, Sherwood W. Wise, Mahmoud M. Faris

Publikováno v: Volume: 29, Issue: 2 242-256
Turkish Journal of Earth Sciences

Calcareous nannofossil, δ13C, δ18O, and carbonate content data were used to define and reveal the variations across the latest Paleocene-earliest Eocene interval at the Misheiti Section, Central Sinai, Egypt. The upper part of Tarawan Formation, th

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https://dergipark.org.tr/tr/pub/tbtkearth/issue/52068/677578

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A new biostratigraphically significant Late Oligocene Sphenolithus species from the equatorial region

Autor: Mohammed Aljahdali, Sherwood W. Wise, James E. Bergen, James J. Pospichal

Publikováno v: Micropaleontology. 61:193-197

Sphenolithus avis n. sp. is a new calcareous nannofossil species described in materials recovered from Ocean Drilling Program (ODP) sites in the equatorial region. Sphenolithus avis n. sp. is small to medium size with a short tapered apical spine and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f8274c170798f83d0e5ebe7dcfba43a0
https://doi.org/10.47894/mpal.61.3.06

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Calcareous nannofossil biostratigraphy of the Paleocene at the Misheiti section, East Central Sinai, Egypt

Autor: Sherwood W. Wise, Atef M. Kasem, Esam Zahran, Sherif Farouk, Mahmoud Faris

Publikováno v: Arabian Journal of Geosciences. 10

Integration of calcareous nannofossil data, δ13C and δ18O values, and carbonate contents of the lower Paleocene–upper Paleocene sequence that crops out at the Misheiti section, East Central Sinai, Egypt, were used to denote the Danian/Selandian (

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https://doi.org/10.1007/s12517-017-3217-4

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