Results 51 to 60 of about 405 (163)

Millennial Cycles in Greenland and Antarctic Ice Core Records: Evidence of Astronomical Influence on Global Climate

Journal of Geophysical Research: Atmospheres, Volume 130, Issue 7, 16 April 2025.
Abstract Multimillennial‐scale climate events are well‐documented in ice‐core records from both Greenland and Antarctica, yet the role of orbital and solar input oscillations in shaping these events remains unresolved. In this study, we analyze two high‐resolution oxygen isotope records from Greenland and Antarctica to assess the influence of orbital ...
Vadim A. Kravchinsky, Rui Zhang, Ryan Borowiecki, Avto Goguitchaichvili, Jan Czarnecki, Andrzej Czarnecki, Niklas Boers, André Berger, Mirko van der Baan   +8 more
wiley   +1 more source

Does Eolian Flux to the Northwest Pacific Ocean Reflect Persistent Asian Interior Aridity on Orbital Timescales?

Geophysical Research Letters, Volume 52, Issue 2, 28 January 2025.
Abstract Northwest Pacific sedimentary eolian dust flux records have long been used to make direct inferences about Asian interior aridity. However, factors other than aridity can impact dust production rate. We present here an integrated environmental magnetic, electron microscopic, sedimentologic, and geochemical investigation of eolian dust records ...
Qiang Zhang, Andrew P. Roberts, Zhengquan Yao, Xuefa Shi, Qingzhen Hao, Lixia Ju, Xu Tang, Jianxing Liu, Shuangchi Liu, Qingsong Liu   +9 more
wiley   +1 more source

Cyclostratigraphy and Astrochronology of the Late Devonian Kellwasser Crisis, Northern Appalachian Basin, USA

, 2018
Late Devonian marine mass extinctions associated with the Frasnian-Famennian stage transition (approximately 370 million years ago) occurred in a succession of extinction pulses within a narrow stratigraphic interval known as the Kellwasser Crisis.
Tuskes, Katherine
core   +1 more source

Timing Is Everything

Paleoceanography and Paleoclimatology, Volume 39, Issue 12, December 2024.
Abstract Deep ocean sediments document past environmental changes over space and time. The information gleaned from such deposits allows scientists to test climate models that are used to predict future climate change. However, the causes and consequences of changing climate can be unraveled only if geological data from different regions are ...
T. Westerhold, C. Agnini, E. Anagnostou, F. Hilgen, B. Hönisch, A. N. Meckler, H. Pälike, B. Wade, S. Sosdian, J. Kasbohm   +9 more
wiley   +1 more source

Advances in Limnogeology: The lake‐basin‐type model revisited 25 years after…anomalies, conundrums and upgrades

The Depositional Record, Volume 10, Issue 5, Page 748-792, November 2024.
This manuscript is a review of the lake basin type models applied in Limnogeology, their evolution since the last update (2000), integration with new data and finally the presentation of a new lake basin type model proposal as a result of this process. It is intended as a novel and useful contribution for the Limnogeology community.
Cecilia A. Benavente, Kevin M. Bohacs
wiley   +1 more source

Supplemental Material: Recalibrating the Devonian time scale: A new method for integrating radioisotopic and astrochronologic ages in a Bayesian framework

, 2021
Laser ablation–inductively coupled plasma–mass spectrometry (LA-ICP-MS) methods and results, additional age-depth modeling methods, and description of modeling code; LA-ICP-MS data for Hercules I K-bentonite and age-depth model inputs and results; R ...
Claire O. Harrigan (11525287), et al. (281964)   +1 more
core   +1 more source

Astronomical Calibration of the Ocean Anoxic Event 1b and Its Implications for the Cause of Mid‐Cretaceous Events: A Multiproxy Record

Paleoceanography and Paleoclimatology, Volume 39, Issue 11, November 2024.
Abstract The timing and duration of oceanic disturbances linked to Oceanic Anoxic Event (OAE) 1b, as well as the mechanisms driving anoxia and carbon burial during this period, remain subjects of debate. We conducted cyclostratigraphic analyses on magnetic susceptibility (MS) and elemental Ti and Fe series within the upper Aptian‐lower Albian interval ...
J. M. F. Ramos, J. F. Savian, D. R. Franco, M. F. Figueiredo, C. G. Leandro, F. Frontalini, R. Coccioni, N. Casadei, M. Giorgioni, P. H. P. C. Vidal, E. Yokoyama, G. Fazio, L. Jovane, N. Sabatino, R. I. F. Trindade, L. R. Tedeschi   +15 more
wiley   +1 more source

Testing Astronomical Solutions With Geological Data for the Latest Cretaceous: An Astronomically Tuned Time Scale

Paleoceanography and Paleoclimatology, Volume 39, Issue 11, November 2024.
Abstract Astronomical solutions form the backbone of accurate dating for geology and paleoclimate studies. Beyond ∼ ${\sim} $ 50 Ma, however, the chaos inherent in the solar system makes it impossible to calculate a unique astronomical solution. Geological data have been used to constrain the chaos in order to arrive at an astronomically calibrated ...
I. J. Kocken, R. E. Zeebe
wiley   +1 more source

Early Jurassic extrinsic solar system dynamics versus intrinsic Earth processes: Toarcian sedimentation and benthic life in deep-sea contourite drift facies, Cardigan Bay Basin, UK

Progress in Earth and Planetary Science
The Cardigan Bay Basin (UK) may have functioned as a deep and narrow strait, and thereby influenced Early Jurassic oceanic circulation through the northern and southern Laurasian Seaway, and between Boreal and Peri-Tethys domains.
Grzegorz Pieńkowski, Alfred Uchman, Krzysztof Ninard, Kevin N. Page, Stephen P. Hesselbo   +4 more
doaj   +1 more source

Cyclostratigraphy and astrochronology of the Tripoli diatomite formation (pre‐evaporite Messinian, Sicily, Italy)

Terra Nova, 1999
The ongoing debate about the Messinian salinity crisis in the Mediternean is fuelled in part by the lack of an adequate time control. The most accurate and, at the same time, detailed constraints are nowadays provided by the astronomical dating technique. Here we present an astronomical age model for the cyclically bedded Tripoli diatomite Formation on
Hilgen, F.J., Krijgsman, W.
openaire   +3 more sources