Rapid eruption of the Deccan flood basalts at the Cretaceous/Tertiary boundary

  title={Rapid eruption of the Deccan flood basalts at the Cretaceous/Tertiary boundary},
  author={Robert A. Duncan and Douglas G. Pyle},
The accumulation of flood basalts of the Deccan Traps, western India, is one of the most remarkable volcanic provinces on Earth in sheer extent and volume. These rocks are akin in composition and occurrence to other extensive continental basalt provinces, usually located near plate margins, but distributed worldwide and of various ages1. Recent interest in the Deccan flood basalts has increased with the suggestion that this volcanic activity may have coincided with mass faunal extinctions and… 

Stratigraphy, structure and volcanology of the SE Deccan continental flood basalt province: implications for eruptive extent and volumes

The Deccan Volcanic Province is one of the world's largest continental flood basalt provinces, and derives additional importance because its eruptions (64–67 Ma) straddle the Cretaceous–Tertiary

Critical assessment of the geochronological data on the Deccan traps, India: Emphasis on the timing and duration of volcanism in sections of tholeiitic basalts

  • A. Baksi
  • Geology
    Journal of Earth System Science
  • 2022
Geochronological research on the Deccan traps, one of the larger continental flood basalt provinces, has been underway for over 50 years. Initial attempts by K–Ar dating, yielding scattered dates,

Geology of the High Rock caldera complex, northwest Nevada, and implications for intense rhyolitic volcanism associated with flood basalt magmatism and the initiation of the Snake River Plain–Yellowstone trend

We present the geologic history of the High Rock caldera complex (HRCC; Nevada, USA), a major mid-Miocene silicic center associated with flood basalt volcanism. Based on 70 40Ar/39Ar ages and new

Reappraisal of Duration and Eruptive Rates in Deccan Volcanic Province, India

Rapidly expanding geochronological, paleomagnetic and volcanological data of the Deccan Volcanic Province (DVP) has given new insights to the expansive knowledge on it that had been built up through


Concordant plateau and isochron ages were calculated from 40Ar/39Ar incremental heating experiments on volcanic rocks recovered by drilling at four Leg 115 sites and two industry wells along the

Deccan volcanism linked to the Cretaceous-Tertiary boundary mass extinction: New evidence from ONGC wells in the Krishna-Godavari Basin

A scientific challenge is to assess the role of Deccan volcanism in the Cretaceous-Tertiary boundary (KTB) mass extinction. Here we report on the stratigraphy and biologic effects of Deccan volcanism



Stratigraphy, composition and form of the Deccan Basalts, Western Ghats, India

In the Western Ghats between latitudes 18° 20′ N and 19° 15′ N, 7000 km2 of Deccan Basalt have been mapped with the primary objective of establishing a flow stratigraphy as a guide to the volcanic

Amirante Basin, western Indian Ocean: Possible impact site of the Cretaceous/Tertiary extinction bolide?

If an impact event caused the mass extinctions and geochemical anomalies at the Cretaceous/Tertiary boundary, it probably occurred in an oceanic area. However, no convincing impact site has yet been

Critical evaluation of the age of the Deccan Traps, India: Implications for flood-basalt volcanism and faunal extinctions

Attempts to evaluate the possible link between flood-basalt volcanism and the faunal extinctions observed at the K/T boundary must rely on precise knowledge of the amount of such volcanism that took

The Cretaceous-Tertiary Transition

It seems more likely that an explanation for the changes during the Cretaceous-Tertiary transition will come from continued examination of the great variety of terrestrial events that took place at that time, including extensive volcanism, major regression of the sea from the land, geochemical changes, and paleoclimatic and paleoceanographic changes.

Extraterrestrial Cause for the Cretaceous-Tertiary Extinction

A hypothesis is suggested which accounts for the extinctions and the iridium observations, and the chemical composition of the boundary clay, which is thought to come from the stratospheric dust, is markedly different from that of clay mixed with the Cretaceous and Tertiary limestones, which are chemically similar to each other.

Plate Motions and Deep Mantle Convection

A scheme of deep mantle convection is proposed in which narrow plumes of deep material rise and then spread out radially in the asthenosphere. These vertical plumes spreading outward in the