Results 31 to 40 of about 3,107 (226)

The Hell Creek Formation, Montana: A Stratigraphic Review and Revision Based on a Sequence Stratigraphic Approach

open access: yesGeosciences, 2020
The Upper Maastrichtian fluvial Hell Creek Formation of the Fort Peck Lake area, Montana (and regional equivalents) is notable for its vertebrate fossils and for the K-Pg mass extinction at or near its upper contact.
Denver Fowler
doaj   +1 more source

The Jurassic/Cretaceous boundary and high resolution biostratigraphy of the pelagic sequences of the kurovice section (Outer Western Carpathians, the northern Tethyan margin)

open access: yesGeologica Carpathica, 2019
Microfacies and high resolution studies at the Kurovice quarry (Czech Republic, Outer Western Carpathians) on calpionellids, calcareous and non-calcareous dinoflagellate cysts, sporomorphs and calcareous nannofossils, aligned with paleomagnetism, allow ...
Svobodová Andrea   +6 more
doaj   +1 more source

The tectono-stratigraphic evolution of the Fucino Basin (central Apennines, Italy): new insights from the geological mapping of its north-eastern margin.

open access: yesJournal of Maps, 2021
We present the geological map of the north-eastern margin of the Fucino Basin, which is mainly characterized by Plio-Quaternary continental deposits that show transition from deeper-water lacustrine environment, marginal lacustrine system, and fluvial ...
G. Mondati   +7 more
doaj   +1 more source

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

open access: yesFrontiers 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   +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)

open access: yesGeosciences, 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   +12 more
doaj   +1 more source

Intercalibration of Boreal and Tethyan timescales: the magneto-biostratigraphy of the Middle Triassic and the latest Early Triassic from Spitsbergen, Arctic Norway [PDF]

open access: yes, 2008
An integrated bio-magnetostratigraphic study of the latest Early Triassic to the upper parts of the Middle Triassic, at Milne Edwardsfjellet in central Spitsbergen, Svalbard, allows a detailed correlation of Boreal and Tethyan biostratigraphies.
Mork, Atle   +8 more
core   +1 more source

A revision of the stratigraphyfor the Middle Pleistocene continentaI deposits of Rome(CentraI Italy): palaeomagnetic data

open access: yesAnnals of Geophysics, 1995
All improved knowledge of the stratigraphy of the Rome area has been achieved trom the interpretation and correlation of a large number of stratigraphic logs from drillings, stored in a data bank by the Istituto Nazionale di Geofisica which allowed the ...
F. Marra, F. Florindo
doaj   +1 more source

Magnetostratigraphy and Radiometric Chronology

open access: yesThe Quaternary Research (Daiyonki-Kenkyu), 1977
This paper briefly reviews the history and present status of magnetostratigraphy, and re-examines the usefulness of magnetostratigraphy in absolute chronology. At present, two different kinds of time scale are used as standards for magnetostratigraphic age determination.
HIROSHI KITAZATO, SHIRO TAMANYU
openaire   +3 more sources

Timing of Tectonic and Magmatic Events in the Philippine Sea Plate Since 50 Ma From High‐Resolution Magnetostratigraphy of IODP Site U1438

open access: yesGeochemistry, Geophysics, Geosystems, 2022
The Philippine Sea Plate in the West Pacific is a unique natural laboratory to study subduction dynamics and the evolution of upper plate magmatism following subduction initiation.
Marco Maffione, Antony Morris
doaj   +1 more source

A jackknife for magnetostratigraphy

open access: yesGeophysical Research Letters, 1991
We investigate the problem of evaluating the reliability of a magnetostratigraphic section using a jackknife resampling scheme. We define a parameter, J as the slope relating the percentage of polarity zones of a sampled section remaining after random deletion of sites increasing in proportion to a total of 20% of the initial collection.
Lisa Tauxe, Yves Gallet
openaire   +1 more source

Home - About - Disclaimer - Privacy