Results 21 to 30 of about 7,983 (211)

The early/middle Eocene transition at the Ésera valley (South Central Pyrenees): Implications in Shallow Benthic Zones (SBZ)

open access: yesGeologica Acta, 2022
An integrated study including magnetostratigraphy, larger benthic foraminifera and calcareous nannofossil biostratigraphy is presented herein. This work was performed in shallow marine siliciclastics rich in larger foraminifera, around the Ypresian ...
Adriana Rodríguez-Pintó   +7 more
doaj   +1 more source

A coherent middle Pliocene magnetostratigraphy, Wanganui Basin, New Zealand [PDF]

open access: yes, 2005
We document magnetostratigraphies for three river sections (Turakina, Rangitikei, Wanganui) in Wanganui Basin and interpret them as corresponding to the Upper Gilbert, the Gauss and lower Matuyama Chrons of the Geomagnetic Polarity Timescale, in ...
Abbott ST   +15 more
core   +2 more sources

High-resolution magnetostratigraphic records of the pliocene sedimentary successions in Yengisar section, NW China, and its tectonic implications

open access: yesFrontiers in Earth Science, 2022
The Neogene strata upward-coarsening sandstone and conglomerate sequences at the periphery of the Northeastern Pamir record the intense uplift of the paleosurface of the building mountains.
Zaizheng Zhou   +8 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]

open access: yes, 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   +10 more
core   +1 more source

Biostratigraphic and magnetostratigraphic synthesis of the Celebes and Sulu Seas, Leg 124 [PDF]

open access: yes, 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.   +7 more
core   +1 more source

Climate warming, euxinia and carbon isotope perturbations during the Carnian (Triassic) Crisis in South China [PDF]

open access: yes, 2016
The Carnian Humid Episode (CHE), also known as the Carnian Pluvial Event, and associated biotic changes are major enigmas of the Mesozoic record in western Tethys.
Bond, D.P.G.   +8 more
core   +2 more sources

Magnetostratigraphic Chronology of a Cenozoic Sequence From DSDP Site 274, Ross Sea, Antarctica

open access: yesFrontiers in Earth Science, 2020
New paleomagnetic results from the late Eocene-Middle Miocene samples from Deep Sea Drilling Project Site 274, cored during Leg 28 on the continental rise off Victoria Land, Ross Sea, provide a chronostratigraphic framework for an existing paleoclimate ...
Luigi Jovane   +9 more
doaj   +1 more source

Miocene stable isotopic stratigraphy and magnetostratigraphy of Buff Bay, Jamaica [PDF]

open access: yes, 1994
Previously reported biostratigraphic relationships from middle-upper Miocene sections exposed near Buff Bay, Jamaica (18°N, tropical bioprovince), differ from the subtropical North Atlantic (Sites 563 and 558).
Kent, Dennis V.   +3 more
core   +2 more sources

Results of magnetostratigraphic study of the Lower Syzran subformation (Paleocene) in the north of the Saratov Right Bank (Gremyachka and Kluchy-2 sections) [PDF]

open access: yesИзвестия Саратовского университета. Новая серия: Серия Науки о Земле
The results of petromagnetic and paleomagnetic studies of two sections of the Lower Syzran subformation (Paleocene) – Gremyachka and Klyuchi-2, located in the north of the Saratov Right Bank and represented by weakly magnetic silicites, are ...
Shelepov, Dmirtiy Aleksandrovich
doaj   +1 more source

Magnetostratigraphic Evidence From the Gengma Basin for the Fast Response of the Crustal Rotation of the Northern Part of the Shan‐Thai Block to the India‐Eurasia Convergence

open access: yesGeochemistry, Geophysics, Geosystems, 2022
The Cenozoic tectonic evolution of the southeastern edge of the Tibetan Plateau is interpreted in terms of two alterative dynamic mechanisms: lateral extrusion of coherent lithospheric blocks and viscous lower crustal flow.
Xinxin Sun   +8 more
doaj   +1 more source

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