Origin of the oldest (3600–3200 Ma) cratonic core in the Western Dharwar Craton, Southern India: Implications for evolving tectonics of the Archean Earth

Jayananda, M.; Guitreau, Martin; Aadhiseshan, K.R.; Miyazaki, Takashi; Chung, Sun‐Lin

doi:10.1016/j.earscirev.2022.104278

Cited by 24 publications

(23 citation statements)

References 227 publications

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“…S2). The calculations were carried out with an average CDC or EDC TTG gneiss (Jayananda et al 2018) (Table S2), depending on sample location, as the upper crustal assimilant (Table S2). Partial melts of the assimilant were subtracted in each step using the M a */M c value that varies according to energy constraints (in contrast to a constant "r" ratio, DePaolo 1981) during fractionation.…”

Section: Calculation Method: Reverse Ec-afc Modelmentioning

confidence: 99%

“…The equilibration temperature (T eq ) was assumed as 1000 °C. The gneiss-melt partition coefficients of the trace elements were estimated from their contents in average TTG gneiss and anatectic melt in Jayananda et al (2018) (Table S2, S3). The basalt-melt elemental partition coefficients were calculated from the estimated proportions of fractionating phases and mineral-melt elemental partition coefficients (Table S2, S3).…”

Section: Calculation Method: Reverse Ec-afc Modelmentioning

confidence: 99%

“…Fig. 1 Geological map of a part of the Dharwar Craton and Cuddapah Basin (box in inset) after Geological Survey of India (GSI 1998) with boundaries between western (WDC), central (CDC) and eastern (EDC) parts of the craton (thick dashed lines) and for sanukitoids and anatectic granites from Chadwick et al (2000) and Jayananda et al (2018), dike swarms (grey lines) from Halls et al (2007), and Moho depth contours (km, red dashed lines) from Das et al (2015). Location of the studied samples of dikes, sills and volcanics are shown (letter in parentheses after the sample names refer to sources reporting bulk compositions: a- Murty et al 1987, b-Rao et al 1995, c-Chatterjee and Bhattacharji 1998, d-Anand et al 2003, e-Halls et al 2007, f-French and Heaman 2010, g- Kumar et al 2012b, h, i and j-Srivastava et al.…”

Section: Introductionmentioning

confidence: 99%

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Origin of the Paleoproterozoic basaltic dikes from the central and eastern Dharwar Craton and sills and volcanics from the adjoining Cuddapah Basin, southern India

Chatterjee

2023

Contrib Mineral Petrol

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Reverse fractionation modeling considering energy-constrained assimilation-fractional crystallization is performed to estimate primary magma compositions, degree of crustal contamination, pressure–temperature of equilibrium with mantle, and potential temperatures for the origin of the Paleoproterozoic (~ 2.37–1.88 Ga) basaltic dikes in central and eastern Dharwar Craton and sills and volcanics in the adjoining Cuddapah Basin, southern India. Mineral thermobarometry indicates that the dikes crystallized at upper crustal conditions (~ 1–6 kbar/ ~ 1120–1210 °C). Hence, the reverse fractionation calculations are performed at low pressures by adding olivine + plagioclase + clinopyroxene, olivine + plagioclase and only olivine in equilibrium with melt, and simultaneously subtracting an upper crustal partial melt in small steps until the melt is multiply saturated with lherzolite at a high pressure. The results indicate that the basalts are 5–30% contaminated, and their enriched light rare earth element (REE) patterns can be attributed to upper crustal assimilation. The upper crust was pre-heated to 665–808 °C during dike emplacement. The primary magmas of all basalts were last equilibrated with spinel lherzolite at 10–16.5 kbar/1291–1366 °C, and they resemble pooled polybaric incremental melts generated along a ~ 1450 °C adiabat. The estimated mantle potential temperatures (1293–1515 °C) are similar to Paleoproterozoic ambient mantle temperatures. All basalts and their primary magmas show lower chondrite-normalized DyN/YbN ratios than the plume-derived mid-Proterozoic Mackenzie dikes of Canadian Shield, and the primary magmas show flat REE patterns indicating spinel lherzolite melting. The low estimated potential temperatures, low DyN/YbN ratios, and a spinel-bearing mantle source are at odds with an origin of the basalts from mantle plumes.

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Section: Calculation Method: Reverse Ec-afc Modelmentioning

confidence: 99%

Section: Calculation Method: Reverse Ec-afc Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Origin of the Paleoproterozoic basaltic dikes from the central and eastern Dharwar Craton and sills and volcanics from the adjoining Cuddapah Basin, southern India

Chatterjee

2023

Contrib Mineral Petrol

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“…The Archaean Dharwar Craton of the southern Indian Shield is constituted of two distinct blocks, namely, the Western Dharwar Craton and the Eastern Dharwar Craton that differ on the basis of crustal thickness, lithological associations and grade of metamorphism (Gupta et al 2003; Ramakrishnan & Vaidyanadhan, 2010; Jayananda et al 2018). The Eastern Dharwar Craton is bounded between a steep mylonitic zone in the west, the Chitradurga Shear Zone, and the Proterozoic Eastern Ghats Mobile Belt in the east (Fig.…”

Section: Geological Frameworkmentioning

confidence: 99%

Mantle transition zone-derived eclogite xenolith entrained in a diamondiferous Mesoproterozoic (∼1.1 Ga) kimberlite from the Eastern Dharwar Craton, India: evidence from a coesite, K-omphacite, and majoritic garnet assemblage

Chatterjee

Rao²,

Pandey³

et al. 2023

Geol. Mag.

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Subduction-related kimberlite-borne eclogite xenoliths of the Precambrian age may provide significant information about the evolution and recycling of a subducting crust as exhumed/orogenic eclogites of the pre-Mesoproterozoic time-frame are globally rare. In this paper, we report a kimberlite-borne eclogite xenolith from the diamondiferous Kalyandurg kimberlite cluster of the Eastern Dharwar Craton, India, which contains a plethora of ultra-high-pressure minerals such as coesite, majoritic garnet, and supersilicic K-rich omphacite. The presence of these ultra-high-pressure minerals is confirmed by in situ X-ray diffractometry, laser Raman spectra and electron probe microanalysis. The presence of coesite undisputedly pinpoints a subduction origin for the eclogite at ∼2.8 GPa pressure, which corresponds to ∼100 km depth. The geothermobarometric estimations involving garnet–omphacite–kyanite–coesite reveal that such an eclogitic assemblage equilibrated at ∼5–8 GPa (∼175–280 km) pressure during ultra-deep subduction. The textural relationship between omphacite, coarse-grained garnet and majoritic garnet coupled with the laser Raman spectra and geobarometric estimations obtained from the majoritic garnet demonstrate that the majoritic garnet formed at ∼8–19 GPa (∼280–660 km) owing to disassociation of omphacite and coarse-grained garnet to majoritic garnet during increment of pressure up to the mantle transition zone. Thus, the mineralogical and geothermobarometric data suggest that the studied eclogite possibly travelled down to the mantle transition zone before it was rapidly carried up by a pre-Mesoproterozoic mantle plume, and subsequently entrained as a xenolith by the Mesoproterozoic (∼1.1 Ga) kimberlite.

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“…Several sedimentary formations, deformation, igneous activity, and metamorphism characterize the Archaean Dharwar craton (Naqvi and Rogers, 1987). Many researchers have studied the Archaean crustal evolution in the Dharwar craton (Jayananda et al, 2018;Ramakrishnan and Vaidyanadhan, 2010 and references therein). Archaean granite-greenstone belts have received significant attention in early Earth's history, to understand the crust and the emergence of plate tectonics (e.g.…”

Section: Introductionmentioning

confidence: 99%

The elusive crustal resistive boundary beneath the Deccan Volcanic Province and the western Dharwar craton, India

Akkapolu¹,

Bukke²,

Kusham³

et al. 2023

GeA

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The electrical properties of the boundary beneath the Deccan Volcanic Province and the western Dharwar craton are imaged by using the magnetotelluric method. The magnetotelluric study was carried out along a 150km long WNW-ESE profile from Belgaum (in the Deccan Volcanic Province) to Haveri (in the western Dharwar craton).Data from 19 magnetotelluric stations spaced 10-15km apart were used. The dominant regional geo-electric strike direction obtained is N20ºE. Two-dimensional (2-D) inversion is done by using the non-linear conjugate gradient scheme for both apparent resistivity and phase. The 2-D resistivity model shows a high electrical resistivity character (>10,000ohm-m) in the western Dharwar craton. Two conductive anomalies are mapped in the crustal region. In the WNW side of the profile, a conductive feature (~200ohm-m) is imaged in the mid-lower crust and, in the central part of the profile another conductive feature is mapped in the lower crust. The conductive features robustness is tested using linear and non-linear sensitivity analyses. The conductor mapped in the WNW part of the profile is considered as a deep seated fault representing a boundary or a rift related feature beneath the Deccan Volcanic Province and the western Dharwar craton. A zone of enhanced conductivity (<50ohm-m) at an approximate depth of 10-30km may represent the presence of the rift in the region. This conducting feature on the Western side of the E-W trending Kaladgi Basin can be interpreted as the extension of the Kaladgi Basin further west. A well-correlated geological cross-section is also derived to interpret the resistive features mapped in this study. The electrical resistivity nature of the crust is compared with other regions of the world.

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Origin of the oldest (3600–3200 Ma) cratonic core in the Western Dharwar Craton, Southern India: Implications for evolving tectonics of the Archean Earth

Cited by 24 publications

References 227 publications

Origin of the Paleoproterozoic basaltic dikes from the central and eastern Dharwar Craton and sills and volcanics from the adjoining Cuddapah Basin, southern India

Origin of the Paleoproterozoic basaltic dikes from the central and eastern Dharwar Craton and sills and volcanics from the adjoining Cuddapah Basin, southern India

Mantle transition zone-derived eclogite xenolith entrained in a diamondiferous Mesoproterozoic (∼1.1 Ga) kimberlite from the Eastern Dharwar Craton, India: evidence from a coesite, K-omphacite, and majoritic garnet assemblage

The elusive crustal resistive boundary beneath the Deccan Volcanic Province and the western Dharwar craton, India

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