...Fig. 6. Diagram showing the difference in thickness of lava between the base of the Mahabaleshwar Formation and the 29r–29n palaeomagnetic reversal horizon. Also shown is the elevation of the base of the Mahabaleshwar Formation from Cox & Hawkesworth (1985 ) and Devey (1986 ), derived from...

... footprint area of the Deccan Traps ( Self et al., 2006 ). (iii) Volumes based on the assumption that the Poladpur, Ambenali, and Mahabaleshwar Formations cover circular footprint areas with radius 600 km, and that all the other formations have circular footprint areas with radius 250 km, as suggested...

... crystallization are typically manifest as shifts in the ranges of incompatible element abundances, and for instance, the ranges of Ba concentration within the Ambenali (50-100ppm) and Mahabaleshwar Formations (100-200 ppm) can be readily ascribed to 50% fractionation of a gabbroic assemblage (e.g. Cox & Devey...

... on the basis of regional dips) is revised in light of all the above points, could not the samples interpreted as transitional flows between the Ambenali/Poladpur/Mahabaleshwar Formations by Mitchell & Widdowson (their figs 6 & 7 ) be open to alternative interpre- tations? What is the position adopted...

...] model composition in parts per 10,000). The analysis included euhedral crystals isolated from (1) red boles, (2) an ~40-cm-thick tephra in the Mahabaleshwar Formation (samples DEC13–08/09/10), and (3) a single coarse-grained segregation within a basaltic flow in the Jawhar Formation (DEC13–30); we...

.... There are 11 widely recognized formations; the Desur Fm is restricted to a few flows in the southern Deccan only (i.e. Belgaum area), and considered to be essentially a return to Mahabaleshwar-type eruptions (e.g. Lightfoot & Hawkesworth 1988 ; Lightfoot et al . 1990 ). The total basalt thickness is c...

... Cox K. G. Hawkesworth C. J. Relative contributions of crust and mantle to flood basalt volcanism, Mahabaleshwar area, Deccan Traps Philosophical Transactions of the Royal Society of London 1984 A310 627 641 Cox K. G. Hawkesworth C. J. Geochemical stratigraphy of the Deccan...

... eruption history has been recently confirmed by Schoene et al. (2015) , who obtained U/Pb ages on single zircon (2–8 data per sample) ranging from 66.29 ± 0.03 Ma (lowest lava flow unit, Jawhar formation) to 65.53 ± 0.03 Ma (topmost lava flow unit, Mahabaleshwar formation). New 40 Ar/ 39 Ar ages...

... ( Mitchell and Widdowson, 1991 ; Jay and Widdowson, 2008 ; Sheth et al., 2014 ). These transitions have overlapping ranges ( Fig. 2 ) and appear to transcend the polarity reversal recorded in the lower lavas of the Mahabaleshwar Formation ( Renne et al., 2015 ). These and similar examples show...

... succession ( Beane et al., 1986 ). Thirty dikes and minor intrusive bodies were mapped, sampled, and analyzed from the coastal section immediately south of Mumbai (Table DR3). These fall into three groups: Twelve dikes have Wai Subgroup (Mahabaleshwar, Ambenali, and Poladpur Formations...

.... Plotted also are the sulfur concentrations (uncertainty is ±10%) measured by Self et al. (2008) in four Deccan Traps basalts of the Neral, Thakurvadi, and Jawar Formations (India; data averaged for 1–7 melt inclusion [MI] analyses per rock) and those measured by Marks et al. (2014) on olivine-hosted...

... (Sahyadri Mountains) which act as a watershed between the narrow coastal strip of Konkan and the eastern mainland area (Figure 1). The country rocks in the project area are basaltic lava flows belonging to the Deccan Trap formation of Paleocene age. Although the area forms a part of the aseismic penin...