Heat flow in the Bastar Craton, central Indian Shield: implications for thermal characteristics of Proterozoic cratons

Gupta, Mohan L.; Sundar, A.; Sharma, Somya; Singh, S. B.

doi:10.1016/0031-9201(93)90081-j

Cited by 43 publications

(14 citation statements)

References 12 publications

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“…A 0 and D values for the NSL are not available. However, Gupta et al (1993) have reported these values for granodiorite from Malanjkhand (22.0268N, 80.7158E) located south of the NSL in the Bastar craton (Fig. 1).…”

Section: Mathematical Modelingmentioning

confidence: 82%

A tentative 2D thermal model of central India across the Narmada-Son Lineament (NSL)

Rai

Thiagarajan

2006

Journal of Asian Earth Sciences

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Section: Mathematical Modelingmentioning

confidence: 82%

A tentative 2D thermal model of central India across the Narmada-Son Lineament (NSL)

Rai

Thiagarajan

2006

Journal of Asian Earth Sciences

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“…A 0 and D values for the NSL are not available. However, Gupta et al (1993) have reported these values for the granodiorite rock from Malanjkhand (22.026 • N, 80.715 • E) located south of NSL in Bastar craton (figure 1). These values are: A 0 = 2.1 μW/m 3 , D = 11.5 km and K 0 = 3.1 Wm −1 K −1 .…”

Section: Mathematical Modelingmentioning

confidence: 84%

“…These values for A 0 , K 0 and D have been used in this study to also estimate the heat generation distribution from the top of the basement rock to the top of the LVZ. Gupta et al (1993) have also given mantle heat flow value equal to 23 mW/m 2 for the Bastar craton and the same value has been considered in the present study at the base of the model as a boundary condition. Since heat production in the upper mantle is very small, a small value of A equal to 0.01 μW/m 3 is assigned to the region beneath the Moho (Safanda et al 1992).…”

Section: Mathematical Modelingmentioning

confidence: 97%

2-D Crustal thermal structure along Thuadara-Sindad DSS profile across Narmada-Son lineament, central India

Thiagarajan

2007

J Earth Syst Sci

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Central India is traversed by a WSW-ENE trending Narmada-Son lineament (NSL) which is characterized by the presence of numerous hot springs, feeder dykes for Deccan Traps and seismicity all along its length. It is divided in two parts by the Barwani-Sukta Fault (BSF). To the west of this fault a graben exists, whereas to the east the basement is uplifted between Narmada North Fault (NNF) and Narmada South Fault (NSF). The present work deals with the 2-D thermal modeling to delineate the crustal thermal structure of the western part of NSL region along the Thuadara-Sindad Deep Seismic Sounding (DSS) profile which runs almost in the N-S direction across the NSL. Numerical results of the model reveal that the conductive surface heat flow value in the region under consideration varies between 45 and 47 mW/m 2 . Out of which 23 mW/m 2 is the contribution from the mantle heat flow and the remaining from within the crust. The Curie depth is found to vary between 46 and 47 km and is in close agreement with the earlier reported Curie depth estimated from the analysis of MAGSAT data. The Moho temperature varies between 470 and 500 • C. This study suggests that this western part of central Indian region is characterized by low mantle heat flow which in turn makes the lower crust brittle and amenable to the occurrence of deep focused earthquakes such as Satpura (1938) earthquake.

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“…Further investigations are necessary in this direction regarding the characterization of the various mantle sources beneath the craton which is beyond scope of the present study. Table 4 Average Th, U and K along with standard deviation and radioelemental ratios (Th/U and K/U) for the granitic rocks from different geological provinces in the Indian shield 1: present study; 2: Nagaraju et al (2012); 3: Gupta et al (1993); 4: Menon et al (2003); 5: Kochhar (1992); 6: Singh and Vallinayagam (2009);7: Singh and Vallinayagam (2012); 8: Roy and Rao (2000); 9: Shrivastava et al (1992); 10: Padmakumari et al (1977); 11: Kumar and Reddy (2004); 12: Kumar and Srinivasan (2002) …”

Section: (I)mentioning

confidence: 99%

Radioelemental, petrological and geochemical characterization of the Bundelkhand craton, central India: implication in the Archaean geodynamic evolution

Ray

Nagaraju

Singh

et al. 2015

Int J Earth Sci (Geol Rundsch)

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with radioelemental ratios suggest that radioelemental variations in these lithounits are mainly related to abundances of the radioactive minerals that have formed by the fractionation of LILE from different magma sources. Based on present data, the craton can be divided into three distinct zones that can be correlated with its evolution in time and space. The central part, where gneisses are associated with metavolcanics of greenstone belt, is characterized by lowest radioelements and is the oldest component. The southern part, dominated by pink granitoid, is characterized by highest radioelements and is the youngest part. The northern part, dominated by grey and biotite granitoid, is characterized by moderate radioelements.

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Heat flow in the Bastar Craton, central Indian Shield: implications for thermal characteristics of Proterozoic cratons

Cited by 43 publications

References 12 publications

A tentative 2D thermal model of central India across the Narmada-Son Lineament (NSL)

A tentative 2D thermal model of central India across the Narmada-Son Lineament (NSL)

2-D Crustal thermal structure along Thuadara-Sindad DSS profile across Narmada-Son lineament, central India

Radioelemental, petrological and geochemical characterization of the Bundelkhand craton, central India: implication in the Archaean geodynamic evolution

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