Devdutt Upasani

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Verified

Devdutt verified their affiliation via an institutional email.

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• Ph.D.
• Professor (Assistant) at Fergusson College

Clay minerals formed mainly by the alteration of volcanic glass are reported by many workers. The commonly formed minerals belonging to the smectite group especially nontronite and ferrosaponite are widely reported by many workers in basalts. However, most of the reports suggest the formation of ferrosaponite in marine conditions (Zhou et al., (199...

The rapid and voluminous eruptions of the flood basalts in the Deccan Volcanic Province (DVP) straddling the Cretaceous-Paleogene Boundary (K-PgB) are recognised as a causative factor for the environmental stress leading to a dramatic global faunal turnover across this boundary. This makes the computations of the volume of basaltic eruptions import...

Water shortage has always been a problem for hamlets situated at a higher elevation, away from the main streams from many mountainous regions of India. It is glaringly true for the Himalayan region, where hamlets belonging to a village lie scattered throughout the area. During a drought period, when the upper springs dry up, these habitations exper...

An exponential rise in the occurrence of landslides in Western Maharashtra is being reported from various quarters. A combined effect of a changing climate, temporal, and spatial variabilities in precipitation along with changes in land use and land cover are factors that are possibly contributing to the susceptibility of slope failure during the m...

The Bhetkheda-Mohana Lineament is traced as a continuous lineament across nearly 100 km in the Central Narmada valley across the Deccan Trap basalts and their basement of Proterozoic sediments. While a major length of this lineament is occupied by a basaltic dyke, there are segments where the dyke is completely absent, and the lineament is represen...

The western edge of the Deccan Plateau (¼Western Uplands) has been depicted in its evolutionary models to be a contiguous crustal block exposing structurally undisturbed subhorizontal stacks of Deccan Trap basalts. The geomorphological and morphometric characteristics of this terrain, Quaternary fluvial sediments capping the Deccan Traps in some ri...

The environmental crisis responsible for the terminal Cretaceous extinctions has been linked with either episodes of Deccan volcanism or the Chicxulub impact (see Bhandari et al., 1996; Keller et al., 2009; Schulte et al., 2010; Schoene et al., 2015). Richards et al. (2015) proposed a connection between the two events and suggested that there was a...

The rare blood-red coloured plagioclase phenocrysts from this compound pahoehoe megaporphyritic lava flow belonging to the Deccan Traps occurs in the dug well sections between Belhe and Alkuti villages of Ahmednagar District of Maharashtra. The plagioclase feldspar phenocrysts occur as honey yellow, colourless, white and red in colour. Petrographic...

From the existing hundreds of lottery centres in Pune city, about nine lottery centres were chosen to estimate the amount of waste paper generated per week during the festive and non-festive seasons. The data collected through questionnaire show that a major portion of the lottery tickets are disposed in the dustbins of the Pune Municipal Corporati...

Surface geological mapping was undertaken in the Koyna -Warna region of the Deccan Trap province, India. Vertical logs of the lava pile and structural discontinuities imprinted on the basaltic lfows are documented through field studies.

Occurrence of well crystallized nontronite in a megaporphyritic basalt flow from Nighoj area, Maharashtra, India is reported. Thin section studies of the vesicles from periphery to the centre reveal the presence of greenish palagonite, probably indicating the stages of devitrification of glass and the weathering of palagonite to the formation of no...

The Koyna-Warna region of Maharashtra has witnessed sustained "triggered" (Reservoir related) seismicity within a narrow area for more than 40 years. Efforts are underway to precisely delineate the subsurface seismogenic faults in this region. The thick pile of the subhorizontal stack of Deccan Trap basalts have very clearly obscured the surface ex...

This report is a synopsis of the hydrogeological study carried out for Bird-K in Pavagada, Sira and Bagepalli areas, Tumkur District, Karnataka. The study aimed at an impact analysis of recharge through borewells as well as suggesting new sites for the same.

This report is a synopsis of a study that provided inputs to the CII Programme on „community managed irrigation systems‟ in Dungarpur district of Rajasthan. The inputs included basic geological mapping and development of a conceptual hydrogeological framework for the development of community systems, which is also useful for providing a basis for...

ACWADAM, with the help of CII has begun initial technical support to the programme in water management in areas around Neemrana in Alwar district, Rajasthan. This process involved meetings with the CII teams and field visits to the project area in. This report sums up the salient activities and observations by ACWADAM.

The role of groundwater in irrigated agriculture is a well-known fact. Groundwater irrigation has played a central role in enabling rural communities to transition from low-productivity subsistence agriculture to much more intensive forms of production, during the last century, and especially during the last few decades. This is a phenomenon that i...

This compilationof papers is a consequence of a workshop on ‘groundwater’ jointly conducted by ACWADAM and Arghyam Trust. This two-day workshop covered diverse topics like importance of scale in groundwater resource planning and management, importance of aquifer typologies, participatory processes of groundwater management, groundwater regulation a...