Results 191 to 200 of about 3,442,186 (236)

Obliquity pacing of the hydrological cycle during the Oceanic Anoxic Event 2

Earth and Planetary Science Letters, 2018
The Oceanic Anoxic Event 2 (OAE2, ca. ∼93.5 Ma) represents a major phase of environmental change during the Mesozoic, and is associated with a pronounced positive excursion in the carbon-isotope record. Short-term climate oscillations within the OAE2 are
Guillaume Charbonnier, S. Boulila, J. Spangenberg, T. Adatte, K. Föllmi, J. Laskar   +5 more
semanticscholar   +1 more source

Milankovitch cycles in Neocene deep‐sea sediment

Paleoceanography, 1986
Pelagic carbonate sediments from the world ocean basins commonly show cyclic variations in amount and/or degree of preservation of biogenic calcite, with periodicities of several tens to several hundreds of thousands of years. The direct causes of these cycles are fluctuations in noncarbonate dilution, carbonate production, carbonate dissolution, and ...
Walter E. Dean, James V. Gardner
openaire   +1 more source

Milankovitch and sub-Milankovitch cycles of the early Triassic Daye Formation, South China and their geochronological and paleoclimatic implications

Gondwana Research, 2012
article The mass extinction at the end of Permian was followed by a prolonged recovery process with multiple phases of devastation-restoration of marine ecosystems in Early Triassic. The time framework for the Early Triassic geological, biological and geochemical events is traditionally established by conodont biostratigra- phy, but the absolute ...
Huaichun Wu, Shihong Zhang, Qinglai Feng, Ganqing Jiang, Haiyan Li, Tianshui Yang   +5 more
openaire   +1 more source

Coals peripheral to opening and closure of the northern Western Interior Seaway: depositional signatures recording interplay between Milankovitch orbital forcing and salt dissolution collapse-subsidence structures with responsiveness to craton deformation and eustatic sea-level

Carbonates and evaporites, 2021
P. Broughton
semanticscholar   +1 more source

Milankovitch type cycles in the Lower Carboniferous of NW Ireland

Terra Nova, 1989
ABSTRACTA short description of the Lower Carboniferous near Sligo (NW Ireland) is given. Limestones and mark in four measured sections in the Glencar Limestone were numerically coded as plus and minus one, respectively. Such sequences show good and persistent cyclicity with a basic wave length of 200 cm.
openaire   +1 more source

Gender Stereotype and Spatial Reasoning: the Milankovitch Cycles

2017
Stereotype threat, a phenomenon in which learners feel at risk of confirming negative stereotypes about their abilities, is often associated with spatial reasoning abilities in geoscience and has a disproportionately negative effect on women. This study examines how students’ growth or fixed mindsets mediate or amplify the effects of stereotype threat ...
openaire   +1 more source

A new view on the driving mechanism of Milankovitch glaciation cycles

Earth and Planetary Science Letters, 1995
Abstract Dynamical instabilities in the glaciation and deglaciation of the ice sheets can be triggered by pulsations of the rate of change of the orbital and rotational parameters. The purpose of this paper is to demonstrate that the Milankovitch glaciation cycles are extremely sensitive to the rate of change of the obliquity frequency.
openaire   +1 more source

“Concrete” Testimony to Milankovitch Cycle in Earth's changing obliquity

, 1996
B. Chao
semanticscholar   +1 more source

Milankovitch cycles, eighty years later

Proceedings of 11th International Conference of the Balkan Physical Union — PoS(BPU11), 2023
openaire   +1 more source

Milankovitch Cycles and Sequences: Two Different Stratigraphic Tools

1999
With the introduction of sequence stratigraphy, the word cycle has again become a term which is frequently used. Cycles have been classified in a very arbitrary way into orders of different length and several different orders can occur together in the stratigraphic record.
openaire   +1 more source