SURESH C PATEL
Articles written in Journal of Earth System Science
Volume 131 All articles Published: 23 July 2022 Article ID 0163 Research article
PAYEL DEY JYOTISANKAR RAY JANISAR M SHEIKH SURESH C PATEL CHRISTIAN KOEBERL AVIPSHA CHAKRABORTY
Multivariate statistical analysis involving hierarchical clusters was carried out for basaltic samples
(and associated units) from Khandwa (21°49'N, 76°21'E). ‘Highly significant’ or ‘significant’ linear correlation
coefficient values (
$\bf{Highlights}$
$\bullet$ Multivariate statistical analysis from a portion of eastern Deccan volcanic province deciphers distinctive nature of crystallization.
$\bullet$ Cluster patterns indicate distinct ‘bulk level of crystallization’ and ‘ultimate crystallization’ for the lavas.
$\bullet$ Rapid quenching of dyke rocks only allows them to crystallize up to the bulk level.
$\bullet$ Ambient temperature controls bulk level of crystallization for the lavas.
Volume 131 All articles Published: 28 September 2022 Article ID 0210 Research article
PAYEL DEY JYOTISANKAR RAY JANISAR M SHEIKH SURESH C PATEL CHRISTIAN KOEBERL SIMRAN DUTTA
Continental flood basalts of the world are represented either by picrobasalt/picrite layers (with abundant growth of olivine) or by (almost) olivine-depleted tholeiite basalts. We have taken a case study from the olivine-depleted basaltic rocks from Khandwa (21°49'N: 76°21'E) Eastern Deccan Volcanic Province. Our research shows that recent cooling experiments (available in the literature) involving a dry basalt and construction of some selected binary major element variation diagrams (entailing lever rules) can explain (and quantify) the insignificant level (${\sim}$2–4%) of olivine crystallization (${\sim}$olivine decadence) in tholeiite basalts. Such decadent olivine retains a skeletal crystallographically-oriented geometry. We contemplate that our simplistic model of olivine decadence can be extended to other flood basalt provinces of the world as well.
$\bf{Highlights}$
$\bullet$ First-time cogent model of olivine decadence in Deccan basalts
$\bullet$ Integration of newly obtained experimental data and binary variation diagrams
$\bullet$ Petrographic support validates the model
$\bullet$ Model can be extended to other continental Flood basalts
Volume 132, 2023
All articles
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