Results 71 to 80 of about 7,983 (211)

Integrated stratigraphy of the Upper Barremian–Aptian sediments from the south-eastern Crimea

Geologica Carpathica, 2018
Previous studies made in different parts of the world have shown that Barremian–Aptian times imply many difficulties in deciphering the biostratigraphy, microfossil evolution and correlation of bioevents.
Karpuk Maria S., Shcherbinina Ekaterina A., Brovina Ekaterina A., Aleksandrova Galina N., Guzhikov Andrey Yu., Shchepetova Elena V., Tesakova Ekaterina M.   +6 more
doaj   +1 more source

Miocene to Early Pleistocene Depositional History and Tectonic Evolution of the Issyk‐Kul Basin, Central Tian Shan

Geochemistry, Geophysics, Geosystems, 2021
The Issyk‐Kul Basin (Kyrgyzstan), situated in the central Tian Shan Mountains, hosts the largest and deepest mountain lake in Central Asia. Erosion of the surrounding Terskey and Kungey ranges led to the accumulation of up to 4 km of sediment in the ...
Sophie C. Roud, Michael R. Wack, Stuart A. Gilder, Anna Kudriavtseva, Edward R. Sobel   +4 more
doaj   +1 more source

Diagenetic and Hydrothermal Processes Produce Heavy Molybdenum Isotope Signatures in Pelagic Sediments of the North and South Pacific

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 2, February 2026.
Abstract Molybdenum isotopes (δ98Mo) have been used for more than two decades to investigate past‐ocean redox conditions due to the distinct behavior of this element in oxic and anoxic environments. The oxic sink is generally accepted to have a near‐constant δ98Mo value of −0.7‰, a value derived primarily from the δ98Mo signatures of Fe–Mn crusts and ...
P. L. Fraga‐Ferreira, C. Siebert, M. Frank, F. Scholz   +3 more
wiley   +1 more source

Changes in the Indonesian Throughflow Since the Late Miocene Based on Radiolarian Assemblages From ODP Site 710 in the Western Tropical Indian Ocean: Implications of the Indo‐Pacific Gateway (Indonesian Seaway)

Paleoceanography and Paleoclimatology, Volume 41, Issue 2, February 2026.
Abstract The Indo‐Pacific Gateway is a narrow tropical passage connecting the Pacific and Indian Oceans, and alterations in its topographic configuration can significantly influence the volume of water exchanged between the two oceans through the Indonesian Throughflow (ITF).
Shin‐ichi Kamikuri, Kenji M. Matsuzaki
wiley   +1 more source

Magnitostratigraphic studies of the Upper Sarmatian-Lower Maeotian deposits in the Panagia Cape section (the Taman Peninsula)

Вестник Камчатской региональной ассоциации "Учебно-научный центр". Серия: Науки о Земле, 2019
In order to obtain the missing data on the magnetostratigraphy of transitional layers between Sarmatian and the Maeotian parts in the Eastern Paratethys, the authors studied the Upper Sarmatian ― the Lower Maeotian deposits in the Panagia Cape section ...
Pilipenko O.V., Trubikhin V.M., Rostovtseva Yu.V., Rybkina A.I., Filina E.V.   +4 more
doaj   +1 more source

Self‐Reversed Magnetization in Sediments Caused by Greigite Alteration

Geophysical Research Letters, 2023
Multipolarity remanence in greigite‐bearing sediments has long been recognized, but the cause of this anomalous remanence behavior is not well understood.
Liao Chang, Zhaowen Pei, Pengfei Xue, Shishun Wang, Zhaoping Wang, Wout Krijgsman, Mark J. Dekkers   +6 more
doaj   +1 more source

Paleogene geochronology: An integrated approach [PDF]

, 1988
Geochronology is the conceptual division of continuous time as measured (geochronometry) by the progression in an ordinal series of events. This is best achieved by an approach which integrates four independent data sets: magnetostratigraphy, seafloor ...
Aubry, Marie-Pierre, Berggren, William A., Flynn, John J., Kent, Dennis V., Klitgord, K. D., Obradovich, J. D., Prothero, D. R.   +6 more
core   +2 more sources

Magnetostratigraphy and Source Characterisation Across the Early Miocene Unconformity, Northern Rocky Mountains, USA

Terra Nova, Volume 38, Issue 1, Page 1-8, February 2026.
ABSTRACT The early Miocene unconformity (EMU) formed during a transition in the tectonic regime of western North America that coincided with faunal diversification. The Railroad Canyon section in the northern Rocky Mountains provides a complete geologic record around this event. Our new magnetostratigraphic study in combination with published U‐Pb ages
Dieke Gerritsen, Stuart A. Gilder, Alina L. Ludat, Michael R. Wack   +3 more
wiley   +1 more source

Palaeomagnetism of the Bayan Gol formation, western Mongolia [PDF]

, 1996
Oriented samples of the Lower Cambrian Bayan Gol Formation from Salaany Gol, Mongolia, were collected at roughly 5 m stratigraphic intervals for palaeomagnetic analysis.
Budney, C. J., Evans, D. A., Kirschvink, J. L., Zhuravlev, A. Yu   +3 more
core   +1 more source

Freshwater amphibians and squamates from Villeveyrac (lower Campanian; Hérault, France): palaeodiversity, palaeoenvironment and implications for the Late Cretaceous palaeobiogeography of the European herpetofauna

Papers in Palaeontology, Volume 12, Issue 1, January/February 2026.
Abstract The Late Cretaceous witnessed numerous transgression–regression sequences and the onset of a global cooling phase at the start of the Campanian. In the European archipelago, these environmental changes, combined with active plate tectonics, facilitated the formation of ephemeral land bridges that served as dispersal routes for a variety of ...
Olivier Jansen, Géraldine Garcia, Olga Otero, Marc Augé, Bernard Gomez, Xavier Valentin   +5 more
wiley   +1 more source