Results 11 to 20 of about 8,049 (227)

Magnetostratigraphy of the Miocene continental deposits of the Montes de Castejón (central Ebro basin, Spain): geochronological and paleoenvironmental implications [PDF]

open access: yesGeologica Acta, 2004
A detailed magnetostratigraphic study has been carried out in the early to middle Miocene distal alluvial and lacustrine sediments of the Montes de Castejón (central Ebro Basin).
F.J. PÉREZ-RIVARÉS   +3 more
doaj   +5 more sources

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

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   +3 more sources

Late Eocene to Early Oligocene (36–26 Ma) Rock Magnetism and Magnetostratigraphy of IODP Site U1553, Southwestern Pacific: Defying the Challenges of Carbonate Dilution and Reductive Diagenesis

open access: yesGeochemistry, Geophysics, Geosystems
The late Eocene to early Oligocene is an intriguing Paleogene period in which the Earth climate state changed from Warmhouse to Coolhouse. Accurate age models are essential for investigating these climate transitions.
Yang Zhang   +5 more
doaj   +2 more sources

Miocene magnetostratigraphy from Equatorial Pacific sediments (ODP Site 1218, Leg 199) [PDF]

open access: yesEarth and Planetary Science Letters, 2004
Pliocene and Miocene magnetostratigraphy from ODP Site 1218 (Equatorial Pacific) has been obtained by measurements made on u-channel samples, augmented by about 50 discrete samples.
Luca Lanci, Josep M Pares, Dennis V Kent
exaly   +4 more sources

Intensification of Northern Hemisphere Glaciation Triggered the Red Clay to Loess‐Paleosol Shift on the Chinese Loess Plateau 2.7 Million Years Ago

open access: yesGeophysical Research Letters
Widespread aeolian loess‐paleosol and red clay sediments on the Chinese Loess Plateau (CLP) provide a globally unique terrestrial archive of Neogene–Quaternary climate.
Xinxia Li   +11 more
doaj   +2 more sources

Problems of magnetostratigraphy of Pleistocene loess-soil deposits of the South of Ukraine [PDF]

open access: yesГеофизический журнал, 2016
Main principles of magnetostratigraphy, paleomagnetic method of measurement and its applying in Quaternary stratigraphy have been set forth. Results of Matuyama-Brunhes (M/B) boundary detection in loess-soil sediments of Ukraine and other territories ...
V.G. Bakhmutov, D. V. Glavatskiy
doaj   +4 more sources

Magnetostratigraphy of Chinese loess–paleosol sequences

open access: yesEarth-Science Reviews, 2015
Abstract As one of the longest and most continuously deposited terrestrial sedimentary archives in the world, Chinese loess–paleosol sequences record paleoclimatic and paleomagnetic variations at a range of time scales. Magnetostratigraphic studies provide a first-order chronological framework for Chinese loess sequences. In this review, we highlight
Qingsong Liu, Chun-Sheng Jin, P-X Hu
exaly   +2 more sources

The Osmium Isotope Signature of Phanerozoic Large Igneous Provinces

open access: yesGeophysical Monograph Series, Page 229-246., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Alexander J. Dickson   +2 more
wiley  

+4 more sources

Combined Magnetostratigraphy From Three Localities of the Rainstorm Member of the Johnnie Formation in California and Nevada, United States Calibrated by Cyclostratigraphy: A 13 R/Ma Reversal Frequency for the Ediacaran

open access: yesFrontiers in Earth Science, 2021
A combined magnetostratigraphy for the Rainstorm Member of the Ediacaran Johnnie Formation was constructed using the sediment accumulation rates determined by rock magnetic cyclostratigraphy for three localities of the Rainstorm Member to provide a high ...
Kenneth P. Kodama
doaj   +1 more source

Geochemical and Mineral Properties of Quaternary Deep-Sea Sediments in the Central-Tropical Pacific and Its Response to the Mid-Pleistocene Transition

open access: yesJournal of Marine Science and Engineering, 2021
Global climate and oceanic water masses have undergone profound changes during the middle Pleistocene transition; however, due to a lack of foraminiferal fossils, the nonfossiliferous pelagic deposits were less detected in previous reports. In this work,
Haifeng Wang   +3 more
doaj   +1 more source

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