When volcanoes record Milankovitch cycles DOI Creative Commons
Gianluca Sottili, Danilo M. Palladino

Frontiers in Earth Science, Journal Year: 2025, Volume and Issue: 13

Published: March 19, 2025

Cyclic fluctuations in the frequency and intensity of volcanic activity are recorded during periods global climate change. Volcano-sedimentary successions (e.g., near-coastal environments) may reveal interplay glacio-eustatic fluctuations, controlling erosional vs. aggradational processes, pattern activity. However, idea a causal link between Earth’s volcanism is still debated, also because many prior studies have focused on single glacial cycle. The strongest evidence for connection orbitally driven variations lies observed periodicity time-scale 10 3 –10 4 years parallel to glacial-interglacial fluctuations. This has suggested that be influenced indirectly by orbital factors, through their effects resulting changes distribution continental ice seawater masses. hypothesis control specifically connects Milankovitch cycles—such as 100,000-year eccentricity cycle, 41,000-year obliquity cycle—to patterns eruptions, result crustal stress redistribution masses sea level alternative suggests direct gravitational effect field oscillations inclination rotation. would into periodic intensifications related greenhouse gas emission, thus turn influencing periodicities scale. Here, we present an overview ongoing debate cause-and-effect relationships volcanism. On these grounds, point out possible research perspectives.

Language: Английский

The Timing of the Middle Pleistocene Glacial Terminations Based on 40Ar/39Ar Detrital Sanidine Dating DOI
Gianluca Marino, Fabrizio Marra, Brian R. Jicha

et al.

Paleoceanography and Paleoclimatology, Journal Year: 2025, Volume and Issue: 40(1)

Published: Jan. 1, 2025

Abstract Sediments were deposited since 1,300 ka in the Paleotiber delta, near coast of Rome. They generally consist fining‐upward sequences, with abrupt transitions from gravel to sand and/or clay that reflect changes regional base level due rapid sea‐level rise. These aggradational successions can be precisely dated using 40 Ar/ 39 Ar geochronology, by exploiting frequent volcanic activity Roman Magmatic Region and associated widespread occurrence potassium‐rich primary deposits. Here we present, new detrital sanidine Ar‐based chronologies for five between ∼960 ∼600 delta are corroborated vertical lateral stratigraphic analysis. This framework sequences is interpreted as local expression high‐amplitude, rise during glacial terminations Middle Pleistocene. Comparison a global stack stable oxygen isotopes measured benthic foraminifera radiometrically speleothems shows agreement across XII, IX, VIII, while ∼10 kyr mismatch found timing termination VII. The relatively small chronological uncertainties (2–2.5 at 2σ level) reconstructed IX allow direct comparison last termination, revealing remarkably similar lags behind orbital forcing, both share configuration but differ ice volumes their preceding maxima.

Language: Английский

Citations

0
The MIS 5 marine terraces on the Tyrrhenian Sea coast of central Italy between Civitavecchia and the Fiora River DOI Creative Commons
Francesca Bulian, Brian R. Jicha,

Roy Komen

et al.

CATENA, Journal Year: 2025, Volume and Issue: 251, P. 108817 - 108817

Published: Feb. 12, 2025

Language: Английский

Citations

0
When volcanoes record Milankovitch cycles DOI Creative Commons
Gianluca Sottili, Danilo M. Palladino

Frontiers in Earth Science, Journal Year: 2025, Volume and Issue: 13

Published: March 19, 2025

Cyclic fluctuations in the frequency and intensity of volcanic activity are recorded during periods global climate change. Volcano-sedimentary successions (e.g., near-coastal environments) may reveal interplay glacio-eustatic fluctuations, controlling erosional vs. aggradational processes, pattern activity. However, idea a causal link between Earth’s volcanism is still debated, also because many prior studies have focused on single glacial cycle. The strongest evidence for connection orbitally driven variations lies observed periodicity time-scale 10 3 –10 4 years parallel to glacial-interglacial fluctuations. This has suggested that be influenced indirectly by orbital factors, through their effects resulting changes distribution continental ice seawater masses. hypothesis control specifically connects Milankovitch cycles—such as 100,000-year eccentricity cycle, 41,000-year obliquity cycle—to patterns eruptions, result crustal stress redistribution masses sea level alternative suggests direct gravitational effect field oscillations inclination rotation. would into periodic intensifications related greenhouse gas emission, thus turn influencing periodicities scale. Here, we present an overview ongoing debate cause-and-effect relationships volcanism. On these grounds, point out possible research perspectives.

Language: Английский

Citations

0