Petrogenesis and Sr, Nd and Pb Isotopic Characteristics of Early Palaeozoic Cambrian Kathalguri Granite, Mikir Hills North East (NE) India — Oak Academic Publishing
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Petrogenesis and Sr, Nd and Pb Isotopic Characteristics of Early Palaeozoic Cambrian Kathalguri Granite, Mikir Hills North East (NE) India
Early Palaeozoic Cambrian A-type Kathalguri Granites in the Mikir Hills of northeastern (NE) India were studied to better understand the geodynamic settings in this region. This research presents new whole-rock geochemical and Sr, Nd, Pb isotopic data for the Cambrian granites in the Kathalguri Granite in Mikir Hills. The Kathalguri Granite shows geochemical characteristics of high SiO 2 , K 2 O and low FeO T , MgO, CaO, and P 2 O 5 compositions. They belong to a high K Shoshonite to ultra-potassic series and display a weak metaluminous to peraluminous feature with A/CNK values of 0.83 to 1.02 with corundum and anorthite normative. FeO T /MgO varies from 2.93 - 7.49, is moderately oxidized and belongs to magnetite series. The rocks have a high ΣREE composition of 370.80 - 1353.23 ppm (average 568.55) and are enriched in LREE with flat HREE and (La/Yb) N values of 8.10 - 18.99, and display obvious strong negative Eu anomalies. Trace elements of the studied granites are characterized by enrichment in Rb, Th, U, Pb, Hf, and Sm, and depletion of Ba, Nb, Ta, and Sr. They display geochemical features of high Zr + Y + Nb + Ce values (241 - 934 ppm) and Ga/Al ratios 2.49 - 3.01 consistent with A-Type granites. Based on particular geochemical features, such as high Rb/Nb (3.10 - 19.53) and Low Y/Nb (0.09 - 2.28), Kathalguri Granite can be further classified as an A1-type subgroup. Granites display relatively low Sr (<175 ppm) and Low Y (2.75 - 128 ppm), with lower Sr/Y ratios (0.82 - 37.82), (Ho/Yb) N ratio varying between 0.53 - 0.89 suggesting that the melts generated at greater depths (18 - 40 km), and fractionation at low pressures (<1000 MPa). The extremely negative Eu anomalies indicate the fractional crystallization of plagioclase and further imply that the melts generated at a pressure at a pressure range of 665 - 1481 MPa (average 920 MPa) where plagioclase is stable. Zircon saturation temperature indicates the granitic melt crystallized at 720˚C - 834˚C. Higher radio-elemental contents (U, Th and K) resulted in high Heat Production (HHP) varying from 4.06 - 14.94 AµWm − 3 and total HGU 98.96 to 214.20. Kathalguri Granite dated by Rb-Sr isotopic isochrone as 489 ± 19 Ma with an initial 87 Sr/ 86 Sr 0.7199 ± 0.0017 and MSWD of 4.1, εSr (I) varied between 161.62 - 332.08 suggests that the Kathalguri Granite have originated from partial melting of ancient, evolved continental crustal material. The Sm-Nd Systematics has given a depleted mantle model (T DM ) age ranging from 1733 - 2063 Ma with high negative εNd(t) values (−10.39 to −15.18) also hint at some heterogeneity or multiple source contributions in the melting process of the protolith. Xenoliths of older mafic rocks and Barapani arenites are seen within the Kathalguri Granite and are also supported by geochemical signatures of recycled crustal materials both mafic and sedimentary. It formed during the Cambrian reorganization of lithospheric plate motion related to the Pan-African-Braziliano event.
Nandi, D.R. (2001) Geodynamics of Northeast India and Adjoining Regions. ACB Publications.
Mallikharjuna Rao, J., Poornachandra Rao, G.V.S. and Sarma, K.P. (2009) Precambrian Mafic Magmatism of Shillong Plateau, Meghalaya and Their Evolutionary History. Journal of the Geological Society of India , 73, 143-152. https://doi.org/10.1007/s12594-009-0009-9
Dhurandhar, A.P., Pandey, U.K. and Raminaidu, C. (2019) Petrochemistry and Sr, Nd, Pb Isotopic Characteristics of Basic Dykes of Mikir Hills, Assam. Journal of the Geological Society of India , 94, 559-572. https://doi.org/10.1007/s12594-019-1361-z
Prakash, T., Saikia, A., Basumatary, P. and Gogoi, B. (2023) Petrogenesis of the Borjuri Diorite Pluton in the Mikir Massif of Northeast India: Implications for Post-Collisional Intermediate Magmatism during the Pan-African Orogeny. Acta Geochimica , 42, 747-764. https://doi.org/10.1007/s11631-023-00613-x
Majumdar, D. and Dutta, P. (2016) Geodynamic Evolution of a Pan-African Granitoid of Extended Dizo Valley in Karbi Hills, NE India: Evidence from Geochemistry and Isotope Geology. Journal of Asian Earth Sciences , 117, 256-268. https://doi.org/10.1016/j.jseaes.2015.12.015
Gogoi, A., Majumdar, D., Cottle, J. and Dutta, P. (2019) Geochronology and Geochemistry of Mesoproterozoic Porphyry Granitoids in the Northern Karbi Hills, NE India: Implications for Early Tectonic Evolution of the Karbi Massif. Journal of Asian Earth Sciences , 179, 65-79. https://doi.org/10.1016/j.jseaes.2019.04.013
Kumar, S., Rino, V., Hayasaka, Y., Kimura, K., Raju, S., Terada, K., et al . (2017) Contribution of Columbia and Gondwana Supercontinent Assembly-and Growth-Related Magmatism in the Evolution of the Meghalaya Plateau and the Mikir Hills, Northeast India: Constraints from U-Pb SHRIMP Zircon Geochronology and Geochemistry. Lithos , 277, 356-375. https://doi.org/10.1016/j.lithos.2016.10.020
Hazarika, G. and Gogoi, B. (2022) Fractal Analysis and Geochemical Characterization of Mafic Magmatic Enclaves in the Kathalguri Pluton, Mikir Massif (Northeast India): Implications for Pan-African Bimodal Magmatism. International Journal of Earth Sciences , 112, 685-705. https://doi.org/10.1007/s00531-022-02259-1
Dhurandhar, A.P. (2005) Geological, Litho-and Hydrogeochemical Mapping of Parts of Mikir Hills Assam. Atomic Minerals Directorate, Hyderabad.
Dhurandhar, A.P. (2010) Petrochemistry and Geochronology of Kathalguri Granite, Assam, India. Atomic Minerals Directorate, Hyderabad.
Keywords
Kathalguri Granite
Petrochemistry
Petrogenesis
Isotopic Age
Radiogenic Heat Generation
Geodynamic Evolution
Mikir Hills
Fry, N. (1979) Random Point Distributions and Strain Measurement in Rocks. Tectonophysics , 60, 89-105. https://doi.org/10.1016/0040-1951(79)90135-5
Ramsay, J.G. and Wood, D.S. (1973) The Geometric Effects of Volume Change during Deformation Processes. Tectonophysics , 16, 263-277. https://doi.org/10.1016/0040-1951(73)90015-2
Flinn, D. (1962) On Folding during Three-Dimensional Progressive Deformation. Quarterly Journal of the Geological Society of London , 118, 385-428. https://doi.org/10.1144/gsjgs.118.1.0385
Flinn, D. (1965) On the Symmetry Principle and the Deformation Ellipsoid. Geological Magazine , 102, 36-45. https://doi.org/10.1017/s0016756800053851
Flinn, D. (1978) Construction and Computation of Three-Dimensional Progressive Deformations. Journal of the Geological Society , 135, 291-305. https://doi.org/10.1144/gsjgs.135.3.0291
Hsu, T.C. (1966) The Characteristics of Coaxial and Non-Coaxial Strain Paths. Journal of Strain Analysis , 1, 216-222. https://doi.org/10.1243/03093247v013216
Burns, K.L. and Spry, A.H. (1969) Analysis of the Shape of Deformed Pebbles. Tectonophysics , 7, 177-196. https://doi.org/10.1016/0040-1951(69)90066-3
Ludwing, K.R. (2012) ISOPLOT 3.75 a Geochronological Toolkit for Microsoft Ex-cel. Berkeley Geochronology Centre Special Publication.
Pandey, B.K., Gupta, J.N., Sarma, K.J. and Sastry, C.A. (1997) Sm-Nd, Pb-Pb and Rb--Sr Geochronology and Petrogenesis of the Mafic Dyke Swarm of Mahbubnagar, South India: Implications for Paleoproterozoic Crustal Evolution of the Eastern Dharwar Craton. Precambrian Research , 84, 181-196. https://doi.org/10.1016/s0301-9268(97)00027-2
Streckeisen, A. (1976) To Each Plutonic Rock Its Proper Name. Earth - Science Reviews , 12, 1-33. https://doi.org/10.1016/0012-8252(76)90052-0
Enrique, P. (2018) Clasificación normativa de las rocas plutónicas saturadas y so-bresaturadas en sílice basada en la clasificación modal QAP: El diagrama 2Q-(or + ab)-4an. Geogaceta , 63, 95-98. http://hdl.handle.net/10272/16739
Wedepohl, K.H. (1969) Handbook of Geochemistry. Springer, 236.
Gao, S., Luo, T., Zhang, B., Zhang, H., Han, Y., Zhao, Z., et al . (1998) Chemical Composition of the Continental Crust as Revealed by Studies in East China. Geochimica et Cosmochimica Acta , 62, 1959-1975. https://doi.org/10.1016/s0016-7037(98)00121-5
Thompson, R.N. (1982) Magmatism of the British Tertiary Volcanic Province. Scottish Journal of Geology , 18, 49-107. https://doi.org/10.1144/sjg18010049
Sun, S. and McDonough, W.F. (1989) Chemical and Isotopic Systematics of Oceanic Basalts: Implications for Mantle Composition and Processes. Geological Society , London , Special Publications , 42, 313-345. https://doi.org/10.1144/gsl.sp.1989.042.01.19
Blundy, J. and Cashman, K. (2008) Petrologic Reconstruction of Magmatic System Variables and Processes. Reviews in Mineralogy and Geochemistry , 69, 179-239. https://doi.org/10.2138/rmg.2008.69.6
Peccerillo, A. and Taylor, S.R. (1976) Geochemistry of Eocene Calc-Alkaline Volcanic Rocks from the Kastamonu Area, Northern Turkey. Contributions to Mineralogy and Petrology , 58, 63-81. https://doi.org/10.1007/bf00384745
Frost, B.R., Barnes, C.G., Collins, W.J., Arculus, R.J., Ellis, D.J. and Frost, C.D. (2001) A Geochemical Classification for Granitic Rocks. Journal of Petrology , 42, 2033-2048. https://doi.org/10.1093/petrology/42.11.2033
Maniar, P.D. and Piccoli, P.M. (1989) Tectonic Discrimination of Granitoids. Geological Society of America Bulletin , 101, 635-643. https://doi.org/10.1130/0016-7606(1989)101<0635:tdog>2.3.co;2
Taylor, S.R. (1965) The Application of Trace Element Data to Problems in Petrology. Physics and Chemistry of the Earth , 6, 133-213. https://doi.org/10.1016/0079-1946(65)90014-5
Rossi, J.N., Toselli, A.J., Basei, M.A., Sial, A.N. and Baez, M. (2011) Geochemical Indicators of Metalliferous Fertility in the Carboniferous San Blas Pluton, Sierra De Velasco, Argentina. Geological Society , London , Special Publications , 350, 175-186. https://doi.org/10.1144/sp350.10
Mason, B. (1966) Principals of Geochemistry. 3rd Edition, John Wiley & Sons, 610.
Batchelor, R.A. and Bowden, P. (1985) Petrogenetic Interpretation of Granitoid Rock Series Using Multicationic Parameters. Chemical Geology , 48, 43-55. https://doi.org/10.1016/0009-2541(85)90034-8
Laurent, O., Martin, H., Moyen, J.F. and Doucelance, R. (2014) The Diversity and Evolution of Late-Archean Granitoids: Evidence for the Onset of “Modern-Style” Plate Tectonics between 3.0 and 2.5ga. Lithos , 205, 208-235. https://doi.org/10.1016/j.lithos.2014.06.012
Patiño Douce, A.E. (1999) What Do Experiments Tell Us about the Relative Contributions of Crust and Mantle to the Origin of Granitic Magmas? Geological Society , London , Special Publications , 168, 55-75. https://doi.org/10.1144/gsl.sp.1999.168.01.05
Jiang, Y., Jia, R., Liu, Z., Liao, S., Zhao, P. and Zhou, Q. (2013) Origin of Middle Triassic High-K Calc-Alkaline Granitoids and Their Potassic Microgranular Enclaves from the Western Kunlun Orogen, Northwest China: A Record of the Closure of Paleo-Tethys. Lithos , 156, 13-30. https://doi.org/10.1016/j.lithos.2012.10.004
Rapp, R.P., Watson, E.B. and Miller, C.F. (1991) Partial Melting of Amphibolite/eclogite and the Origin of Archean Trondhjemites and Tonalites. Precambrian Research , 51, 1-25. https://doi.org/10.1016/0301-9268(91)90092-o
Rapp, R.P. and Watson, E.B. (1995) Dehydration Melting of Metabasalt at 8-32 Kbar: Implications for Continental Growth and Crust-Mantle Recycling. Journal of Petrology , 36, 891-931. https://doi.org/10.1093/petrology/36.4.891
Sisson, T.W., Ratajeski, K., Hankins, W.B. and Glazner, A.F. (2004) Voluminous Granitic Magmas from Common Basaltic Sources. Contributions to Mineralogy and Petrology , 148, 635-661. https://doi.org/10.1007/s00410-004-0632-9
Whalen, J.B., Currie, K.L. and Chappell, B.W. (1987) A-type Granites: Geochemical Characteristics, Discrimination and Petrogenesis. Contributions to Mineralogy and Petrology , 95, 407-419. https://doi.org/10.1007/bf00402202
Eby, G.N. (1992) Chemical Subdivision of the A-Type Granitoids:petrogenetic and Tectonic Implications. Geology , 20, 641-644. https://doi.org/10.1130/0091-7613(1992)020<0641:csotat>2.3.co;2
Pearce, J.A. and Gale, G.H. (1977) Identification of Ore-Deposition Environment from Trace-Element Geochemistry of Associated Igneous Host Rocks. Geological Society , London , Special Publications , 7, 14-24. https://doi.org/10.1144/gsl.sp.1977.007.01.03
Mittlefehldt, D.W. and Miller, C.F. (1983) Geochemistry of the Sweetwater Wash Pluton, California: Implications for “Anomalous” Trace Element Behavior during Differentiation of Felsic Magmas. Geochimica et Cosmochimica Acta , 47, 109-124. https://doi.org/10.1016/0016-7037(83)90095-9
Philips, G.N., Wall, V.J. and Clemens, J.D. (1981) Petrology of the Strathbogie Batholith—A Cordierite Bearing Granite. Canadian Mineralogist , 19, 47-63.
Jackson, N.J., Walsh, J.N. and Pegram, E. (1984) Geology, Geochemistry and Petrogenesis of Late Precambrian Granitoids in the Central Hijaz Region of the Arabian Shield. Contributions to Mineralogy and Petrology , 87, 205-219. https://doi.org/10.1007/bf00373054
Clemens, J.D., Holloway, J.R. and White, A.J.R. (1986) Origin of an A-Type Granite; Experimental Constraints. American Mineralogist , 71, 317-324.
BONIN, B. (2007) A-type Granites and Related Rocks: Evolution of a Concept, Problems and Prospects. Lithos , 97, 1-29. https://doi.org/10.1016/j.lithos.2006.12.007
Eby, G.N. (1990) The A-Type Granitoids: A Review of Their Occurrence and Chemical Characteristics and Speculations on Their Petrogenesis. Lithos , 26, 115-134. https://doi.org/10.1016/0024-4937(90)90043-z
Mushkin, A. (2003) The Petrogenesis of A-Type Magmas from the Amram Massif, Southern Israel. Journal of Petrology , 44, 815-832. https://doi.org/10.1093/petrology/44.5.815
Litvinovsky, B.A., Jahn, B., Zanvilevich, A.N., Saunders, A., Poulain, S., Kuzmin, D.V., et al . (2002) Petrogenesis of Syenite-Granite Suites from the Bryansky Complex (Transbaikalia, Russia): Implications for the Origin of A-Type Granitoid Magmas. Chemical Geology , 189, 105-133. https://doi.org/10.1016/s0009-2541(02)00142-0
Anderson, J.L. (1983) Proterozoic Anorogenic Granite Plutonism of North America. In: Medaris Jr., L.G., Byers, C.W., Mickelson, D.M. and Shanks, W.C., Eds., Geological Society of America Memoirs , Geological Society of America, 133-154. https://doi.org/10.1130/mem161-p133
Yang, J., Wu, F., Chung, S., Wilde, S.A. and Chu, M. (2006) A Hybrid Origin for the Qianshan A-Type Granite, Northeast China: Geochemical and Sr-Nd-Hf Isotopic Evidence. Lithos , 89, 89-106. https://doi.org/10.1016/j.lithos.2005.10.002
King, P.L., White, A.J.R., Chappell, B.W. and Allen, C.M. (1997) Characterization and Origin of Aluminous A-Type Granites from the Lachlan Fold Belt, Southeastern Australia. Journal of Petrology , 38, 371-391. https://doi.org/10.1093/petroj/38.3.371
Droop, G.T.R. (2003) Processes and Conditions during Contact Anatexis, Melt Escape and Restite Formation: The Huntly Gabbro Complex, NE Scotland. Journal of Petrology , 44, 995-1029. https://doi.org/10.1093/petrology/44.6.995
El Bouseily, A.M. and El Sokkary, A.A. (1975) The Relation between Rb, Ba and Sr in Granitic Rocks. Chemical Geology , 16, 207-219. https://doi.org/10.1016/0009-2541(75)90029-7
Ishihara, S. (1977) The Magnetite Series and Ilmenite Series of Granitic Rocks. Mi n ing Geology , 27, 293-305. https://doi.org/10.11456/SHIGENCHISHITSU1951.27.293
Blevin, P.L. (2004) Redox and Compositional Parameters for Interpreting the Granitoid Metallogeny of Eastern Australia: Implications for Gold-Rich Ore Systems. Resource Geology , 54, 241-252. https://doi.org/10.1111/j.1751-3928.2004.tb00205.x
Wu, F.Y., Lu, X.Y., Ji, W.Q., Wang, J.M. and Yang, L. (2017) Identification and Study of Highly Differentiated Granites. Science China Press , 47, 745-765. (In Chinese)
Schiano, P., Monzier, M., Eissen, J., Martin, H. and Koga, K.T. (2009) Simple Mixing as the Major Control of the Evolution of Volcanic Suites in the Ecuadorian Andes. Contributions to Mineralogy and Petrology , 160, 297-312. https://doi.org/10.1007/s00410-009-0478-2
Patiño Douce, A.E. and Johnston, A.D. (1991) Phase Equilibria and Melt Productivity in the Pelitic System: Implications for the Origin of Peraluminous Granitoids and Aluminous Granulites. Contributions to Mineralogy and Petrology , 107, 202-218. https://doi.org/10.1007/bf00310707
Medaris Jr., L.G., Singer, B.S., Dott Jr., R.H., Naymark, A., Johnson, C.M. and Schott, R.C. (2003) Late Paleoproterozoic Climate, Tectonics, and Metamorphism in the Southern Lake Superior Region and Proto-North America: Evidence from Baraboo Interval Quartzites. The Journal of Geology , 111, 243-257. https://doi.org/10.1086/373967
Watson, E.B. and Harrison, T.M. (1983) Zircon Saturation Revisited: Temperature and Composition Effects in a Variety of Crustal Magma Types. Earth and Planetary Science Letters , 64, 295-304. https://doi.org/10.1016/0012-821x(83)90211-x
Boehnke, P., Watson, E.B., Trail, D., Harrison, T.M. and Schmitt, A.K. (2013) Zircon saturation Re-revisited. Chemical Geology , 351, 324-334. https://doi.org/10.1016/j.chemgeo.2013.05.028
Ryerson, F.J. and Watson, E.B. (1987) Rutile Saturation in Magmas: Implications for Tinbta Depletion in Island-Arc Basalts. Earth and Planetary Science Letters , 86, 225-239. https://doi.org/10.1016/0012-821x(87)90223-8
Hayden, L.A. and Watson, E.B. (2007) Rutile Saturation in Hydrous Siliceous Melts and Its Bearing on Ti-Thermometry of Quartz and Zircon. Earth and Planetary Science Letters , 258, 561-568. https://doi.org/10.1016/j.epsl.2007.04.020
Yang, X. (2017) Estimation of Crystallization Pressure of Granite Intrusions. Lithos , 286, 324-329. https://doi.org/10.1016/j.lithos.2017.06.018
Defant, M.J., Jackson, T.E., Drummond, M.S., De Boer, J.Z., Bellon, H., Feigenson, M.D., et al . (1992) The Geochemistry of Young Volcanism Throughout Western Panama and Southeastern Costa Rica: An Overview. Journal of the Geological Society , 149, 569-579. https://doi.org/10.1144/gsjgs.149.4.0569
Liu, S., Hu, R., Feng, C., Gao, S., Feng, G., Qi, Y., et al . (2012) U-Pb Zircon Age, Geochemical and Sr-Nd Isotopic Constraints on the Age and Origin of the Granodiorites in Guilong, Southeastern Yunnan Province, Southern China. Open Journal of Geology , 2, 229-240. https://doi.org/10.4236/ojg.2012.24023
Vellmer, C. and Wedepohl, K.H. (1994) Geochemical Characterization and Origin of Granitoids from the South Bohemian Batholith in Lower Austria. Contributions to Mineralogy and Petrology , 118, 13-32. https://doi.org/10.1007/bf00310608
Moyen, J. (2009) High Sr/Y and La/Yb Ratios: The Meaning of the “Adakitic Signature”. Lithos , 112, 556-574. https://doi.org/10.1016/j.lithos.2009.04.001
Majumdar, D. and Dutta, S. (2007) Geological Investigations on Sulphide Ore Occurrences in Magmatic Complex, Mikir Hills, Assam. I ndian Geological Congress. Bull , 1, 7-21.
Lubnina, N.V. and Slabunov, A.I. (2011) Reconstruction of the Kenorland Supercontinent in the Neoarchean Based on Paleomagnetic and Geological Data. Moscow University Geology Bulletin , 66, 242-249. https://doi.org/10.3103/s0145875211040077
Mints, M.V. and Eriksson, P.G. (2016) Secular Changes in Relationships between Plate-Tectonic and Mantle-Plume Engendered Processes during Precambrian Time. Geodynamics & Tectonophysics , 7, 173-232. https://doi.org/10.5800/gt-2016-7-2-0203
Dhurandhar, A.P., Rajagopalan, V. and Paul, A.K. (2024) Mineral Chemistry and Petrochronology of Zircon from Paleo-Mesoproterozoic Dudhi Group, Northwestern Chhotanagpur Granite Gneiss Complex, India.
Yin, A., Dubey, C.S., Webb, A.A.G., Kelty, T.K., Grove, M., Gehrels, G.E., et al . (2009) Geologic Correlation of the Himalayan Orogen and Indian Craton: Part 1. Structural Geology, U-Pb Zircon Geochronology, and Tectonic Evolution of the Shillong Plateau and Its Neighboring Regions in NE India. Geological Society of America Bulletin , 122, 336-359. https://doi.org/10.1130/b26460.1
Bidyanand, M. and Deomurari, M.P. (2007) Geochronological Constraints on the Evolution of Meghalaya Massif, Northeastern India: An Ion Microprobe Study. Current Science , 93, 1620-1623.
Ghosh, S., Chakraborty, S., Bhalla, J.K., Paul, D.K., Sarkari, A., Bishui, P.K., et al . (1991) Geochronology and Geochemistry of Granite Plutons from East Khasi Hills, Meghalaya. Journal Geological Society of India , 37, 331-342. https://doi.org/10.17491/jgsi/1991/370403
Ghose, S., Chakraborty, S., Paul, D.K., Bhalla, J.K., Bishui, P.K. and Gupta, S.N. (1994) A New Rb-Sr Ages and Geochemistry of Granitoids from Meghalaya and Their Significance in Middle to Late Proterozoic Crustal Evolution. Indian Minerals , 48, 33-44.
Zhang, S., Li, Z., Evans, D.A.D., Wu, H., Li, H. and Dong, J. (2012) Pre-Rodinia Supercontinent Nuna Shaping Up: A Global Synthesis with New Paleomagnetic Results from North China. Earth and Planetary Science Letters , 353, 145-155. https://doi.org/10.1016/j.epsl.2012.07.034
Meert, J.G. and Santosh, M. (2022) The Columbia Supercontinent: Retrospective, Status, and a Statistical Assessment of Paleomagnetic Poles Used in Reconstructions. Gondwana Research , 110, 143-164. https://doi.org/10.1016/j.gr.2022.06.014
Panneer Selvam, A., Prasad, R.N., Dhana Raju, R. and Sinha, R.M. (1995) Rb-Sr Age of the Metaluminous Granitoids of South Khasi Batholith, Meghalaya: Implications on Its Genesis and Pan-African Activity in Northeastern India. Journal Geological Society of India , 46, 619-624. https://doi.org/10.17491/jgsi/1995/460606
Chimote J.S., Pandey B.K., Bagchi A.K., Basu A.N. and Saraswat A.C. (1988) Rb-Sr Whole Rock Isochron Age for the Mylliem Granite. Proceedings 4 th National Symposium on Mass Spectrometry , Bangalore, 4-6 January 1988, 9/1-9/4.
Nayak, S.K., Asha, K. and Rupa, N. (2009) Geochronology Report on Dengaon Granite. AMD.
Nance, R.D. and Murphy, J.B. (2018) Supercontinents and the Case for Pannotia. Geological Society , London , Special Publications , 470, 65-86. https://doi.org/10.1144/sp470.5
Wang, X., Zhang, J., Santosh, M., Liu, J., Yan, S. and Guo, L. (2012) Lithos , 154, 248-262. https://doi.org/10.1016/j.lithos.2012.07.011
Wang, H., Zhai, Q., Hu, P., Zeng, L., Tang, Y. and Zhu, Z. (2020) Late Cambrian to Early Silurian Granitic Rocks of the Gemuri Area, Central Qiangtang: New Constraints on the Tectonic Evolution of the Northern Margin of Gondwana. Acta Geologica Sinica — English Edition , 94, 1007-1019. https://doi.org/10.1111/1755-6724.14556
Sarkar, A., Datta, A.K., Poddar, B.C., Kollapuri, V.K., Bhattacharyya, B.K. and San-wal, R. (1992) Geochronological Studies on Early Cretaceous Effusive and Intrusive Rocks from Northeast India. In: Ghose, N.C., Eds., Mesozoic Magmatism of the Eastern Margin of India , Patna University, 28-29.
Veena Krishna, P.B.K., Krishnamurthy, P. and Gupta, J.N. (1991) Pb, Sr, and Nd Isotope Systematics of Sung Valley Carbonatites. Meghalaya, India: Implications for Contemporary Sub-Crustal Upper Mantle Characterisation. Proc eeding of 5 th Nat ional Symposium Mass Spectrometry , Physical Research Laboratory, Ahmadabad, 7-9 January 1991, Abstract volume.
Veena, K., Pandey, B.K., Krishnamurthy, P. and Gupta, J.N. (1998) Pb, Sr and Nd Isotopic Systematics of the Carbonatites of Sung Valley, Meghalaya, Northeast India: Implications for Contemporary Plume-Related Mantle Source Characteristics. Journal of Petrology , 39, 1875-1884. https://doi.org/10.1093/petroj/39.11-12.1875
Sarkar, A., Datta, A.K., Poddar, B.C., Bhattacharyya, B.K., Kollapuri, V.K. and Sanwal, R. (1996) Geochronological Studies of Mesozoic Igneous Rocks from Eastern India. Journal of Southeast Asian Earth Sciences , 13, 77-81. https://doi.org/10.1016/0743-9547(96)00009-8
Ray, J.S., Ramesh, R. and Pande, K. (1999) Carbon Isotopes in Kerguelen Plume-Derived Carbonatites: Evidence for Recycled Inorganic Carbon. Earth and Planetary Science Letters , 170, 205-214. https://doi.org/10.1016/s0012-821x(99)00112-0
Ray, J.S., Trivedi, J.R. and Dayal, A.M. (2000) Strontium Isotope Systematics of Amba Dongar and Sung Valley Carbonatite-Alkaline Complexes, India: Evidence for Liquid Immiscibility, Crustal Contamination and Long-Lived Rb/Sr Enriched Mantle Sources. Journal of Asian Earth Sciences , 18, 585-594. https://doi.org/10.1016/s1367-9120(99)00072-3
Coffin, M.F. (2002) Kerguelen Hotspot Magma Output since 130 Ma. Journal of Petrology , 43, 1121-1137. https://doi.org/10.1093/petrology/43.7.1121
Heaman, L.M., Srivastava, R.K. and Sinha, A.K. (2002) A Precise U-Pb Zircon/Baddeleyite Age for the Jasra Igneous Complex, Karb-Analong District, Assam, NE India. Current Science , 82, 744-748.
Srivastava, R.K., Guarino, V., Wu, F., Melluso, L. and Sinha, A.K. (2019) Evidence of Sub-Continental Lithospheric Mantle Sources and Open-System Crystallization Processes from In - Situ U-Pb Ages and Nd-Sr-Hf Isotope Geochemistry of the Cretaceous Ultramafic-Alkaline-(Carbonatite) Intrusions from the Shillong Plateau, North-Eastern India. Lithos , 330, 108-119. https://doi.org/10.1016/j.lithos.2019.02.009
Chattopadhyay, N. and Hashimi, S. (1984) The Sung Valley Alkaline Ultramafic Carbonatite Complex, East Khasi and Jaintia Hills Districts, Meghalaya. Records of the Geological Survey of India , 113, 24-33.
Zhu, D., Mo, X., Pan, G., Zhao, Z., Dong, G., Shi, Y., et al . (2008) Lithos , 100, 147-173. https://doi.org/10.1016/j.lithos.2007.06.024
Zhu, D., Chung, S., Mo, X., Zhao, Z., Niu, Y., Song, B., et al . (2009) Geology , 37, 583-586. https://doi.org/10.1130/g30001a.1
Renne, P.R., Ernesto, M., Pacca, I.G., Coe, R.S., Glen, J.M., Prévot, M., et al . (1992) The Age of Paraná Flood Volcanism, Rifting of Gondwanaland, and the Jurassic-Cretaceous Boundary. Science , 258, 975-979. https://doi.org/10.1126/science.258.5084.975
Renne, P.R., Deckart, K., Ernesto, M., Feraud, G. and Piccirillo, E.M. (1996) Age of the Ponta Grossa Dike Swarm (Brazil), and Implications to Parana Flood Volcanism. Earth and Planetary Science Letters , 144, 199-211. https://doi.org/10.1016/0012-821x(96)00155-0
Woolley, A.R. and Kempe, D.R.C. (1989) Carbonatites: Nomenclature, Average Chemical Compositions, and Element Distribution. In: Bell, K., Ed., Carbonatites , Genesis and Evolution , Unwin Hyman, 1-14.
Duncan, R.A. and Pyle, D.G. (1988) Rapid Eruption of the Deccan Flood Basalts at the Cretaceous/Tertiary Boundary. Nature , 333, 841-843. https://doi.org/10.1038/333841a0
Venkatesan, T.R., Pande, K. and Gopalan, K. (1993) Did Deccan Volcanism Pre-Date the Cretaceous/tertiary Transition? Earth and Planetary Science Letters , 119, 181-189. https://doi.org/10.1016/0012-821x(93)90015-2