Sentences with phrase «large igneous provinces»

Recent models have dismissed the role of mantle plumes in the formation of large igneous provinces, ascribing their origin instead to chemical anomalies in the shallow mantle.

Geological and chemical analysis of the region, known as the Franklin large igneous province, showed a sulfur - rich sediment through which the volcanic rocks erupted.

Areas in violet outline large igneous provinces.

Such fiery events have produced large igneous provinces throughout Earth's history.

«Our work offers new tools to constrain the physical and chemical conditions in the mantle responsible for large igneous provinces,» Brown said.

Their findings further substantiate the critical role of mantle plumes in forming large igneous provinces.

Based on the volcanic record in and around Iceland over the last 56 million years and numerical modeling, Brown and Lesher show that high mantle temperatures are essential for generating the large magma volumes that gave rise to the North Atlantic large igneous provinces bordering Greenland and northern Europe.

High - precision dating of the Kalkarindji large igneous province, Australia, and synchrony with the Early — Middle Cambrian (Stage 4 — 5) extinction

The Chon Aike province of Patagonia and related rocks in West Antarctica: a silicic large igneous province

They have all been associated with huge carbon emissions, from Large Igneous Provinces (Some debate on that regarding PETM).

While the biggest volcanic eruptions — including large igneous provinces like the Siberian Traps — are known to be linked to climate upheaval and even mass extinctions, emerging work shows that under the right conditions, smaller eruptions or series of eruptions can also affect climate.

(1) 40Ar39Ar dating and isotopic geochemistry of large igneous provinces.

At the time when these eruptions took place, 717 million years ago, the Franklin large igneous province was near the equator, making it easier for the sulfur dioxide plumes to reach, and cross, the stratosphere and the troposphere.

One suspect behind several mass extinctions is a kind of enormous volcanic zone called a large igneous province, or LIP.

Large igneous provinces, or LIPs, are huge pools of volcanic rocks poured out at the Earth's surface.

Central to their study is a large igneous province (LIP) in Russia called the Siberian Traps.

Large Igneous Provinces and super continent: towards completing the plate tectonic revolution

In Earth's past the trigger for these greenhouse gas emissions was often unusually massive volcanic eruptions known as «Large Igneous Provinces,» with knock - on effects that included huge releases of CO2 and methane from organic - rich sediments.

They preferred the explanation that a large igneous province intruded on a large coal formation to produce CO2 and methane (e.g. Svenson et al. (2004) Nature 429, pp 542).