Anatomy of impactites and shocked zircon grains from Dhala reveals Paleoproterozoic meteorite impact in the Archean basement rocks of Central India

Li, Shan Shan; Keerthy, S.; Santosh, M.; Singh, S. P.; Deering, C. D.; Satyanarayanan, M.; Praveen, M.N.; Aneeshkumar, V.; Indu, G.K.; Anilkumar, Y.; Sajinkumar, K.S.

doi:10.1016/j.gr.2017.10.006

Cited by 29 publications

(7 citation statements)

References 64 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The cratonization is marked by emplacement of Bundelkhand granitoids that occurred subsequent to the greenstone volcanism from 2,552 to 2,525 Ma (Joshi et al, ; Kaur et al, ; Mondal et al, ; Saha et al, ). NE–SW trending quartz reefs probably corresponding to the late stage fluid‐rich residual liquid of granite magmatism, yield ages between 2,300 and 2,400 Ma (Li et al, ; Pati et al, ). The 40 Ar/ 39 Ar age estimates of the dolerite dike swarms emplacements are in between 2,150 and 2,000 Ma (Rao, Rao, Widdowson, & Kelley, ).…”

Section: Geologymentioning

confidence: 99%

Chromian spinel compositions from Madawara ultramafics, Bundelkhand Craton: Implications on petrogenesis and tectonic evolution of the southern part of Bundelkhand Craton, Central India

et al. 2018

View full text Add to dashboard Cite

Madawara ultramafic complex (MUC) in the southern part of Bundelkhand Craton, Central India comprises peridotite, olivine pyroxenite, pyroxenite, gabbro, and diorite. Coarse‐grained olivine, clinopyroxene (Cpx), amphibole (Amp), Al‐chromite, Fe‐chromite, and magnetite with rare orthopyroxene (Opx) are common minerals in peridotite. Chromites are usually coarse‐grained euhedral found as disseminated crystals in the olivine matrix showing both homogeneous and zoned texture. Al‐chromite, primarily characterizes Cr‐spinels and its subsequent fluid activity and alteration can result in the formation of Fe‐chromite, chrome magnetite, and magnetite. Mineral chemistry data suggest that Al‐chromite is characterized by moderately high Cr2O3 (38.16–51.52 wt.%) and Fe2O3 (3.22–14.51 wt.%) and low Al2O3 (10.63–21.87 wt.%), MgO (1.71–4.92 wt.%), and TiO2 (0.22–0.67 wt.%), whereas the homogeneous Fe‐chromite type is characterized by high Fe2O3 (25.54–47.60 wt.%), moderately low Cr2O3 (19.56–37.90 wt.%), and very low Al2O3 (0.06–1.53 wt.%). Subsequent alteration of Al‐chromite and Fe‐chromite leads to formation of Cr‐magnetite and magnetite. The Cr# of Al‐chromite varies from 55.12 to 76.48 and γFe3+# from 8 to 19, whereas the ferrian chromite has high Cr# varying from 94.27 to 99.53 while its γFe3+# varies from 38 to 70. As a whole, the primary Al‐chromite shows low Al2O3, TiO2 contents, and high Fe#, Cr# values. Olivines have forsterite ranging from 75.96% to 77.59%. The bulk‐rock geochemistry shows continental arc geochemical affinities indicated by the high concentration of large‐ion lithophile elements and U, Th relative to the low concentration of high‐field strength elements. These petrological and mineralogical as well as primary Al‐chromite compositions plotted in different discrimination diagrams suggest an arc environment that is similar to Alaskan‐type intrusion.

show abstract

Section: Geologymentioning

confidence: 99%

Chromian spinel compositions from Madawara ultramafics, Bundelkhand Craton: Implications on petrogenesis and tectonic evolution of the southern part of Bundelkhand Craton, Central India

et al. 2018

View full text Add to dashboard Cite

show abstract

“…Impact craters were known to humankind when the remotely sensed images of the Moon, dotted with tens of thousands of basin-like structures (called craters), were captured. This provided the impetus for studying craters on Earth, which not only led to the identification of several craters but also unraveled a plenitude of geological processes that were triggered or evolved through meteoritic impacts (Li et al, 2018;Keerthy et al, 2019;Chandran et al, 2021;James et al, 2021James et al, , 2022Aneeshkumar et al, 2021Aneeshkumar et al, , 2022Indu et al, 2022). Impact events are linked to the possibility of the origin of life (McKay et al, 1996), mass extinction (Alvarez et al, 1980), the evolution of Moon (Daly 1946;Canup and Asphaug, 2001), and even the initiation of plate tectonics on Earth (Maruyama et al, 2018;Santosh et al, 2017;Maruyama and Santosh, 2017).…”

Section: Introductionmentioning

confidence: 99%

Lonar Impact Crater, India: the Best-Preserved Terrestrial Hypervelocity Impact Crater in a Basaltic Terrain as a Potential Global Geopark

et al. 2022

View full text Add to dashboard Cite

Lonar Impact Crater is a simple meteorite impact crater carved out on the ~ 65 Ma old Deccan tholeiitic flood basalts. The crater, though scoured in a basaltic terrain, is still preserved in its most pristine form, with a central crater lake. The geomorphology, geochemistry, geochronology, hydrology, geophysical parameters, and structural aspects of Lonar Crater have been explored in detail, but still continue to contribute valid scientific insights into the geology of terrestrial impact craters. Lonar serves as a potential analog site for studying impact cratering on planetary surfaces with basaltic terrains such as the Moon and Mars. Besides being a highly recognizable impact crater in India, the Lonar crater and its hinterland stand out with its archeological relevance and spiritual influence among the people. The numerous temples in and around the crater premises uphold the cultural significance of the region. The crater and adjacent areas are rich in flora and fauna representing a diverse ecosystem in the vastness of the arid Deccan Flood Basalts. Hence, the astrobleme and its surrounding is declared a Ramsar site and is also a protected wildlife sanctuary. The Indian Government has also declared the crater a National Geological Monument as well as an archaeological monument. Furthermore, the astrobleme is a unique site with socio-cultural and economic significance. With these plethoras of importance, combined with the geological and socio-cultural aspects in its hinterland, together with the most acclaimed UNESCO world heritage centers Ajantha and Ellora caves in the neighborhood, it stands as the right candidate for a UNESCO Global Geopark. However, the crater and its ecosystem are not preserved well enough, and the uniqueness of the crater is diminishing. But after selection as a Ramsar site, the area shows increased vegetation growth. The SWOT analysis conducted in this study accounts for Lonar Crater and its adjoining areas as a potential global geopark. Thus, through this study, we try to propagate the vivid and myriad importance of the Lonar crater and the necessity of protecting this geological monument from both anthropogenic and natural processes and to appraise the necessity for nominating this area as a UNESCO Global Geopark.

show abstract

“…net/EarthImpactDatabase), which spread across diverse tectonic settings. In contrast, the other inner planetary bodies of the solar system, where active geological processes like plate tectonics do not occur, preserve ample evidence of impact cratering with hundreds of thousands of impact craters sprinkled across (Chandran et al, 2021;French & Koeberl, 2010;Indu et al, 2021;James et al, 2022;Keerthy et al, 2019;Li et al, 2018;Maloof et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

“…Following various geological processes, including plate movements, subduction–accretion–collision, weathering, erosion, and deposition, only around 208 impact craters remain on Earth (Gottwald, Kenkmann, & Reimold, 2020; http://passc.net/EarthImpactDatabase), which spread across diverse tectonic settings. In contrast, the other inner planetary bodies of the solar system, where active geological processes like plate tectonics do not occur, preserve ample evidence of impact cratering with hundreds of thousands of impact craters sprinkled across (Chandran et al, 2021; French & Koeberl, 2010; Indu et al, 2021; James et al, 2022; Keerthy et al, 2019; Li et al, 2018; Maloof et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Terrestrial impact craters track the voyage of lithospheric plates

et al. 2022

Self Cite

View full text Add to dashboard Cite

The paradigm of plate tectonics has aided in the identification of the journey of continents on the globe, their assembly into supercontinents, disruption, and re‐assembly. Here, we use meteorite impact craters as proxies for tracking the voyage of lithospheric plates. Employing the provisions in GPlates, an interactive geographic information system‐based plate tectonic reconstruction model, we were able to identify the palaeo‐position, and velocity of the 174 terrestrial impact craters, formed after 1,100 Ma, across the globe. These parameters of craters were evaluated for independent tectonic plates and were correlated with global tectonic events. For example, the similarity in the velocity of Beaverhead (900 Ma) and Holleford (550 Ma) craters since 550 Ma is traced to the connection between the Eastern Basin and North America Craton commencing 1,100 Ma, and through the South Basin and Range. Likewise, the drastic reduction in the velocity of Spider Crater (700 Ma) in Australia after 600 Ma can be attributed to the subduction between east and west Gondwana. The accelerated motion of the Indian Plate at 63 Ma, when the lithosphere was hovering over the Réunion hotspot, is also explained. With the advent of more improved plate tectonic models and the discovery of more impact craters, improvised interpretations will be possible.

show abstract

Anatomy of impactites and shocked zircon grains from Dhala reveals Paleoproterozoic meteorite impact in the Archean basement rocks of Central India

Cited by 29 publications

References 64 publications

Chromian spinel compositions from Madawara ultramafics, Bundelkhand Craton: Implications on petrogenesis and tectonic evolution of the southern part of Bundelkhand Craton, Central India

Chromian spinel compositions from Madawara ultramafics, Bundelkhand Craton: Implications on petrogenesis and tectonic evolution of the southern part of Bundelkhand Craton, Central India

Lonar Impact Crater, India: the Best-Preserved Terrestrial Hypervelocity Impact Crater in a Basaltic Terrain as a Potential Global Geopark

Terrestrial impact craters track the voyage of lithospheric plates

Contact Info

Product

Resources

About