Results 21 to 30 of about 8,049 (227)

Dating North Pacific Abyssal Sediments by Geomagnetic Paleointensity: Implications of Magnetization Carriers, Plio-Pleistocene Climate Change, and Benthic Redox Conditions

Frontiers in Earth Science, 2021
Non-carbonaceous abyssal fine-grained sediments cover vast parts of the North Pacific’s deep oceanic basins and gain increasing interests as glacial carbon traps.
Wanzhang Wang, Tilo von Dobeneck, Thomas Frederichs, Yang Zhang, Lester Lembke-Jene, Ralf Tiedemann, Michael Winklhofer, Dirk Nürnberg   +7 more
doaj   +1 more source

Sulfuric acid speleogenesis and surface landform evolution along the Vienna Basin Transfer Fault: Plavecký Karst, Slovakia

International Journal of Speleology, 2022
Hypogene caves in the Plavecký hradný vrch Hill (Western Slovakia, Central Europe) were formed by waters ascending along faults in fractured Triassic carbonates related to the horst-graben structure at the contact of the Malé Karpaty Mountains and the
Pavel Bella, Helena Hercman, Šimon Kdýr, Petr Mikysek, Petr Pruner, Juraj Littva, Jozef Minár, Michal Gradzinski, Wojciech Wróblewski, Marek Velšmid, Pavel Bosak   +10 more
doaj   +1 more source

Palaeomagnetic suitability of a new section with a potential lower boundary for the Quaternary on the left bank of the lower River Danube

Геофизический журнал, 2022
A first palaeomagnetic study has been carried out on a new section with a potential lower boundary interval for the Quaternary, Dolynske 3. Recently, the Matuyama-Brunhes boundary (at 780 ka) was detected in the adjacent section of Dolynske 2.
D.V. Hlavatskyi, Y.M. Veklych, V.G. Bakhmutov, V.V. Shpyra, T.V. Skarboviychuk, V.I. Yakukhno, I.B. Poliachenko   +6 more
doaj   +1 more source

Edge‐Driven Convection Melting Before the Emplacement of the Afar Mantle Plume Head Inferred From 40Ar/39Ar Dating

Geophysical Research Letters, 2023
The Ethiopia‐Yemen flood basalts are spatially zoned with progressively lower TiO2 lavas from near the Afar depression toward the margins. The timing and rate of emplacement of low TiO2 (LT) lavas are poorly known compared with the ultra‐high TiO2 (HT2 ...
Yutaka Yoshimura, Osamu Ishizuka, Toshitsugu Yamazaki, Hyeon‐Seon Ahn, Tesfaye Kidane, Yuhji Yamamoto, Shun Sekimoto, Takashi Sano, Yo‐ichiro Otofuji   +8 more
doaj   +1 more source

Magnetostratigraphy and Chronology of the Lower Pleistocene Primate Bearing Dafnero Fossil Site, N. Greece

Quaternary, 2020
This paper aims to contribute to the stratigraphic and geochronological evaluation of the primate bearing Dafnero fossil site of Northern Greece by means of lithostratigraphic, paleomagnetic and paleontological analyses.
Mouloud Benammi, Elina Aidona, Gildas Merceron, George D. Koufos, Dimitris S. Kostopoulos   +4 more
doaj   +1 more source

Middle Miocene-Pleistocene Magneto-Cyclostratigraphy from IODP Site U1501 in the Northern South China Sea

Frontiers in Earth Science, 2022
Site U1501 of International Ocean Discovery Program (IODP) Expedition 368 locates on a broad regional basement high in the northern margin of the South China Sea (SCS).
Meinan Shi, Meinan Shi, Meinan Shi, Huaichun Wu, Huaichun Wu, Huaichun Wu, Eric C. Ferré, Sara Satolli, Qiang Fang, Qiang Fang, Qiang Fang, Yunfeng Nie, Yunfeng Nie, Yunfeng Nie, Yuhe Qin, Yuhe Qin, Yuhe Qin, Shihong Zhang, Tianshui Yang, Haiyan Li   +19 more
doaj   +1 more source

New Chronological Constraints from Hypogean Deposits for Late Pliocene to Recent Morphotectonic History of the Alpi Apuane (NW Tuscany, Italy)

Geosciences, 2021
A sedimentary sequence of fluvial deposits preserved in the Corchia Cave (Alpi Apuane) provides new chronological constraints for the evolution of the cave system and the timing and rate of uplift of this sector of the Alpi Apuane since the late Pliocene.
Ilaria Isola, Francesco Mazzarini, Giancarlo Molli, Leonardo Piccini, Elena Zanella, Giovanni Zanchetta, Russell Drysdale, John Hellstrom, Jon Woodhead, Adriano Roncioni, Flavio Milazzo, Diego Pieruccioni, Eleonora Regattieri   +12 more
doaj   +1 more source

“Tiny Wiggles” in the Late Miocene Red Clay Deposits in the North‐East of the Tibetan Plateau

Geophysical Research Letters, 2021
Small amplitude or short period geomagnetic anomalies known as “tiny wiggles” (TWs) are often hard to identify because of magnetic signal smoothing in the marine record of geomagnetic reversals.
Rui Zhang, Xiaohao Wei, Vadim A. Kravchinsky, Leping Yue, Yan Zheng, Jie Qin, Lijun Yang, Minghao Ma, Feng Xian, Hujun Gong, Yunxiang Zhang, Xiaofan Liu   +11 more
doaj   +1 more source

High-precision U-Pb ages in the early Tithonian to early Berriasian and implications for the numerical age of the Jurassic-Cretaceous boundary [PDF]

, 2019
The numerical age of the Jurassic-Cretaceous boundary has been controversial and difficult to determine. In this study, we present high-precision U-Pb geochronological data around the Jurassic-Cretaceous boundary in two distinct sections from different ...
Aguirre-Urreta, Maria Beatriz, Concheyro, Graciela, Lena, Luis, Lescano, Marina Aurora, López Martínez, Rafael, Naipauer, Maximiliano, Pimentel, Márcio, Ramos, Victor Alberto, Samankassou, Elias, Schaltegger, Urs, Vennari, Verónica Vanesa   +10 more
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Biostratigraphic and magnetostratigraphic synthesis of the Celebes and Sulu Seas, Leg 124 [PDF]

, 1991
During ODP Leg 124, late middle Eocene to Quaternary sediment sequences were recovered from 13 holes drilled at five sites in the Celebes and Sulu basins. Paleomagnetic measurements and biostratigraphic studies using calcareous nannofossils, planktonic
Hsu, V., Kaminski, M.A., Merrill, D., Müller, C.M., Nederbragt, A.J., Scherer, R.P., Shibuya, H., Shyu, J.-P.   +7 more
core   +1 more source