scholarly journals A brief comparison of lava flows from the Deccan Volcanic Province and the Columbia-Oregon Plateau Flood Basalts: Implications for models of flood basalt emplacement

2004 ◽  
Vol 113 (4) ◽  
pp. 809-817 ◽  
Author(s):  
Ninad R. Bondre ◽  
Raymond A. Duraiswami ◽  
Gauri Dole
Keyword(s):  
Flood Basalt ◽  
Lava Flows ◽  
Deccan Volcanic Province ◽  
Flood Basalts ◽  
Volcanic Province

scholarly journals Exceptional Multi Stage Mineralization of Secondary Minerals in Cavities of Flood Basalts from the Deccan Volcanic Province, India

Minerals ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 351 ◽  
Author(s):  
Berthold Ottens ◽  
Jens Götze ◽  
Ralf Schuster ◽  
Kurt Krenn ◽  
Christoph Hauzenberger ◽  
...  
Keyword(s):  
Lava Flows ◽  
Stage Iii ◽  
Deccan Volcanic Province ◽  
Flood Basalts ◽  
Time Intervals ◽  
Volcanic Province ◽  
Secondary Minerals ◽  
Large Size ◽  
Multi Stage ◽  
Ar Geochronology

Flood basalts of the Deccan Volcanic Province erupted between about 67.5 to 60.5 Ma ago and reached a thickness of up to 3500 m. The main part consists of compound and simple lava flows with a tholeiitic composition erupted within 500,000 years at about 65 Ma. Within the compound lava flows, vesicles and cavities are frequent. They are filled by secondary minerals partly of well development and large size. This study presents data on the secondary mineralization including detailed field descriptions, optical, cathodoluminescence and SEM microscopy, X-ray diffractometry, fluid inclusions, C and O isotope analyses, and Rb-Sr and K-Ar geochronology. The investigations indicate a multistage precipitation sequence with three main stages. During stage I clay minerals and subsurface filamentous fabrics (SFFs), of probably biogenic origin, formed after the lava flows cooled down near to the Earth’s surface. In stage II, first an assemblage of calcite (I) and zeolite (I) (including mordenite, heulandite, and stilbite) as well as plagioclase was overgrown by chalcedony, and finally a second calcite (II) and zeolite (II) generation developed by burial metamorphism by subsequent lava flows. Stage III is characterized by precipitation of a third calcite (III) generation together with powellite and apophyllite from late hydrothermal fluids. Rb-Sr and K-Ar ages of apophyllite indicate a large time span for stage III. Apophyllite formed within different time intervals from the Paleogene to the early Miocene even within individual lava flows at certain localities. From the Savda/Jalgaon quarry complex, ages cluster at 44–48 Ma and 25–28 Ma, whereas those from the Nashik area are 55–58 Ma and 21–23 Ma, respectively.

Morphological types in the Deccan Volcanic Province, India: implications on emplacement dynamics of continental flood basalts

2021 ◽  
pp. SP518-2020-246
Author(s):  
Vivek S. Kale ◽  
Gauri Dole ◽  
Shilpa Patil Pillai ◽  
Poushali Chatterjee ◽  
Makarand Bodas
Keyword(s):  
Lava Flow ◽  
Flood Basalt ◽  
Deccan Volcanic Province ◽  
Flood Basalts ◽  
Volcanic Province ◽  
Continental Flood Basalts ◽  
Substrate Topography ◽  
History Of ◽  
Multiple Pulses ◽  
Stacking Patterns

AbstractWe review and compare morphologies from continental basaltic lavas, using examples from the Deccan Volcanic Province to compile their internal configurations, mutual associations and compare them. The mechanism of endogenous transfer of lava within an insulating (rapidly developed) crust provides an efficient mode of dispersal of the molten lava in flood basalts. The growth of the lava flow can be achieved by a single extrusion or by multiple pulses of endogenous emplacement that enable the lava to efficiently spread over large areas and thicken.We show that the morphology of a lobe manifests the response of the molten lava to several parameters (including volumetric rate of emplacement, substrate topography, viscosity, vapour loss, etc) that govern the dynamics and cooling history of basaltic lava after it starts to spread on the surface. The lateral transition from one morphology to another within lobes of a lava flow is a testimony to the interactive response of the lava dynamics and rheology to variation in the local systems in which they were emplaced. The morphologies do not evolve as rigid partitioned categories from ‘áā and pāhoehoe lava types’ but as parametric progression of interactive variations in the spreading and cooling lava.A hierarchical recognition of lobes, flows and flow fields and mapping of the morphology (and their lateral transition or continuity) combined with the stacking patterns provides the volcanological framework for a sound stratigraphic mapping of flood basalts. Such an architectural documentation of flood basalt provinces will lead to robust models of their eruptive histories.

Vertebrate biodiversity of the Deccan volcanic province of India: A review

2012 ◽  
Vol 183 (6) ◽  
pp. 597-610 ◽  
Author(s):  
Guntupalli V.R. Prasad
Keyword(s):  
Volcanic Eruptions ◽  
Flood Basalt ◽  
Time Span ◽  
Deccan Traps ◽  
Mass Extinctions ◽  
Deccan Volcanic Province ◽  
Peninsular India ◽  
Volcanic Province ◽  
Detailed Review ◽  
Faunal Diversity

Abstract The Deccan Traps of peninsular India, representing one of the largest flood basalt eruptions on the earth's surface, have been a subject of intensive research in the last three decades because of the attributed link between the Deccan Traps and the Cretaceous-Tertiary boundary mass extinctions. In this context, the biota from the sedimentary beds intercalated with the volcanic flows and underlying the oldest volcanic flow are more important for understanding the faunal diversity and palaeobiogeography of India during the time span of volcanic eruptions. A detailed review of the vertebrate faunal diversity of the Deccan volcanic province is presented here.

Geochemistry and petrogenesis of lava flows around Linga, Chhindwara area in the Eastern Deccan Volcanic Province (EDVP), India

2014 ◽  
Vol 91 ◽  
pp. 174-193 ◽  
Author(s):  
Sohini Ganguly ◽  
Jyotisankar Ray ◽  
Christian Koeberl ◽  
Abhishek Saha ◽  
Martin Thöni ◽  
...  
Keyword(s):  
Lava Flows ◽  
Deccan Volcanic Province ◽  
Volcanic Province

scholarly journals Mineral chemistry of lava flows from Linga area of the Eastern Deccan Volcanic Province, India

2012 ◽  
Vol 121 (1) ◽  
pp. 91-108 ◽  
Author(s):  
SOHINI GANGULY ◽  
JYOTISANKAR RAY ◽  
CHRISTIAN KOEBERL ◽  
THEODOROS NTAFLOS ◽  
MOUSUMI BANERJEE
Keyword(s):  
Mineral Chemistry ◽  
Lava Flows ◽  
Deccan Volcanic Province ◽  
Volcanic Province

scholarly journals Compositionally diverse magmas erupted close together in space and time within a Karoo flood basalt crater complex. Sterkspruit dataset.xlsx

2020 ◽  
Author(s):  
Murray McClintock ◽  
Julian S Marsh ◽  
James White
Keyword(s):  
South Africa ◽  
Flood Basalt ◽  
Lava Flows ◽  
Geochemical Data ◽  
Magmatic Activity ◽  
Flood Basalts ◽  
New Information ◽  
Magma Flux ◽  
External Water ◽  
Lava Pile

Geochemical data and mapping from a Karoo flood basalt crater complex reveals new information about the ascent and eruption of magma batches during the earliest phases of flood basalt volcanism. Flood basalt eruptions at Sterkspruit, South Africa began with emplacement of thin lava flows before abruptly switching to explosive phreatomagmatic and magmatic activity that formed a nest of craters, spatter and tuff rings and cones that collectively comprise a crater complex >40 km2 filled by 9–18 km3 of volcaniclastic debris. Rising magma flux rates combined with reduced access of magma to external water led to effusion of thick Karoo flood basalts, burying the crater-complex beneath the >1.5 km-thick Lesotho lava pile.<div>Sterkspruit dataset</div>

scholarly journals Compositionally diverse magmas erupted close together in space and time within a Karoo flood basalt crater complex. Sterkspruit dataset.xlsx

2020 ◽  
Author(s):  
Murray McClintock ◽  
Julian S Marsh ◽  
James White
Keyword(s):  
South Africa ◽  
Flood Basalt ◽  
Lava Flows ◽  
Geochemical Data ◽  
Magmatic Activity ◽  
Flood Basalts ◽  
New Information ◽  
Magma Flux ◽  
External Water ◽  
Lava Pile

Geochemical data and mapping from a Karoo flood basalt crater complex reveals new information about the ascent and eruption of magma batches during the earliest phases of flood basalt volcanism. Flood basalt eruptions at Sterkspruit, South Africa began with emplacement of thin lava flows before abruptly switching to explosive phreatomagmatic and magmatic activity that formed a nest of craters, spatter and tuff rings and cones that collectively comprise a crater complex >40 km2 filled by 9–18 km3 of volcaniclastic debris. Rising magma flux rates combined with reduced access of magma to external water led to effusion of thick Karoo flood basalts, burying the crater-complex beneath the >1.5 km-thick Lesotho lava pile.<div>Sterkspruit dataset</div>

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