ENVIRONMENTAL AND ECOLOGICAL VARIABILITY OF MIDDLE DEVONIAN (GIVETIAN) FORESTS IN APPALACHIAN BASIN PALEOSOLS, NEW YORK, UNITED STATES

Palaios ◽  
2010 ◽  
Vol 25 (2) ◽  
pp. 85-96 ◽  
Author(s):  
J. S. MINTZ ◽  
S. G. DRIESE ◽  
J. D. WHITE
2020 ◽  
Vol 133 (1-2) ◽  
pp. 277-286 ◽  
Author(s):  
Damien Pas ◽  
Anne-Christine Da Silva ◽  
D. Jeffrey Over ◽  
Carlton E. Brett ◽  
Lauren Brandt ◽  
...  

Abstract Over the past decade the integration of astrochronology and U/Pb thermal ionization mass spectrometry dating has resulted in major improvements in the Devonian time scale, which allowed for accurate determination of ages and rates of change in this critical interval of Earth history. However, widely different durations have been published for the Middle Devonian Eifelian stage. Here we aim to solve this discrepancy by building an astronomically calibrated time scale using a high-resolution geochemical data set collected in the early to late Eifelian outer-ramp and deep-shelf deposits of the Seneca section (Appalachian Basin, Western New York, USA). The Middle Devonian Eifelian Stage (GTS2012; base at 393.3 ± 1.2 m.y. and duration estimate of 5.6 ± 1.9 m.y.), is bracketed by two major bioevents, respectively the Choteč event at its base and the Kačák event just prior to the Eifelian–Givetian boundary. To capture the record of Milankovitch-scale climatic cycles and to develop a model of the climatic and oceanographic variations that affected the Appalachian Basin during the Eifelian, 750 samples were collected at typically 2.5 cm intervals across the Seneca section. Major and trace elements were measured on each sample with an inductively coupled plasma–optical emission spectrometer. To estimate the duration of the Seneca section sampled, we applied multiple spectral techniques such as harmonic analysis, the multi-taper, and evolutionary spectral analysis, and we tuned the Log10Ti series using the short orbital eccentricity ∼100 k.y. cycle. Then, to assess the reliability of our cyclostratigraphic interpretation we ran the Average Spectral Misfit method on selected proxies for detrital input variation. The estimated duration derived using this method falls in the range of durations estimated with the tuning method. Using the approximate position of the Emsian–Eifelian and Eifelian–Givetian boundaries, constrained within <1 m, the proposed estimation of the total duration of the Eifelian age is ∼5 m.y. Interpolated from the high-resolution U-Pb radiometric age available for the Tioga F Bentonite, the numerical ages of the Emsian–Eifelian and the Eifelian–Givetian were respectively recalibrated at 393.39 Ma and 388.24 Ma. The uncertainty from the radiometric date is respectively ± 0.86 Ma and ± 0.86 Ma.


2007 ◽  
Vol 81 (6) ◽  
pp. 1510-1515 ◽  
Author(s):  
David M. Work ◽  
Charles E. Mason ◽  
Gilbert Klapper

Pharciceras Hyatt, 1884 is the diagnostic ammonoid of the late middle Givetian Stage of the Middle Devonian Series. It occurs in the Rhenish Massif in Germany, the Montagne Noire in southern France, and in equivalent strata in the Anti-Atlas in southern Morocco. Verified North American occurrences of Pharciceras are confined to the New York succession, where the appearance of the ancestral species P. amplexum (Hall, 1886) in the Upper Tully Limestone represents an important and well-established biostratigraphic datum within the Taghanic onlap interval (see Aboussalam and Becker, 2001 for discussion). In this note we describe a second, distinctly younger, North American species, Pharciceras barnetti n. sp., from the New Albany Shale in eastcentral Kentucky that provides new evidence on the Taghanic onlap interval (Upper Tully/Geneseo Sequence of Baird and Brett, 2003) in the central Appalachian Basin. This occurrence is particularly significant because of its association with conodonts that provide a basis for refined correlations between the central Appalachian Basin and the Taghanic onlap succession in New York.


2020 ◽  
Vol 8 (1) ◽  
pp. 209-228
Author(s):  
Martin Van Bruinessen ◽  
Michael M. Gunter ◽  
Joost Jongerden ◽  
Michiel Leezenberg ◽  
Stanley Thangaraj

Michael M. Gunter (ed.), Routledge Handbook on the Kurds, London and New York: Routledge, 2019, 483 pp., (ISBN: 9781138646643). Reviewed by Martin van Bruinessen, Utrecht University, The Netherlands Kardo Bokani, Social Communication and Kurdish Political Mobilisation in Turkey, Balti, Republic of Moldova: Lambert Academic Publishing, 2017, 252 pp., (ISBN: 978-3-330-33239-3) Reviewed by Michael M. Gunter, Tennessee Technological University, United States Emel Elif Tugdar & Serhun Al, eds., Comparative Kurdish Politics in the Middle East: Actors, Ideas, and Interests, Cham: Palgrave-MacMillan, 2018, pp. 235, (ISBN: 978-3319537146) Reviewed by Joost Jongerden, Wageningen University, The Netherlands Christoph Markiewicz, The Crisis of Kingship in Late Medieval Islam: Persian Emigres and the Making of Ottoman Sovereignty, Cambridge: Cambridge University Press, 2019, 364 pp, (9781108684842). Reviewed by Michiel Leezenberg, University of Amsterdam, The Netherlands Thomas Schmidinger, The Battle for the Mountain of the Kurds: Self-Determination and Ethnic Cleansing in the Afrin Region of Rojava, Oakland, CA: PM Press, 2019, 192 pp. (ISBN: 978-1629636511). Reviewed by Stanley Thangaraj, City College of New York, United States


2020 ◽  
Vol 20 (2) ◽  
pp. 45-54
Author(s):  
Samuel H. Yamashita

In the 1970s, Japanese cooks began to appear in the kitchens of nouvelle cuisine chefs in France for further training, with scores more arriving in the next decades. Paul Bocuse, Alain Chapel, Joël Robuchon, and other leading French chefs started visiting Japan to teach, cook, and sample Japanese cuisine, and ten of them eventually opened restaurants there. In the 1980s and 1990s, these chefs' frequent visits to Japan and the steady flow of Japanese stagiaires to French restaurants in Europe and the United States encouraged a series of changes that I am calling the “Japanese turn,” which found chefs at fine-dining establishments in Los Angeles, New York City, and later the San Francisco Bay Area using an ever-widening array of Japanese ingredients, employing Japanese culinary techniques, and adding Japanese dishes to their menus. By the second decade of the twenty-first century, the wide acceptance of not only Japanese ingredients and techniques but also concepts like umami (savory tastiness) and shun (seasonality) suggest that Japanese cuisine is now well known to many American chefs.


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