New insights into the structural and tectonic settings of the Bay of Bengal using high resolution earth gravity model data

Narayan, Satya; Kumar, Ujjawal; Pal, Sanjit Kumar; Sahoo, Soumyashree Debasis

doi:10.1007/s11600-021-00657-8

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Tytuł artykułu

New insights into the structural and tectonic settings of the Bay of Bengal using high resolution earth gravity model data

Autorzy

Narayan Satya , Kumar Ujjawal , Pal Sanjit Kumar , Sahoo Soumyashree Debasis

Wybrane pełne teksty z tego czasopisma

https://www.springer.com/journal/11600

Identyfikatory

DOI

10.1007/s11600-021-00657-8

Warianty tytułu

Języki publikacji

Abstrakty

The residual anomaly of GECO model-derived gravity data has been enhanced using first vertical derivative, tilt derivative and balanced horizontal derivative for delineation of structural and tectonic features over the Bay of Bengal (BOB). Entire BOB basin is classified in eastern, central and western basins for analysis of the delineated lineaments to understand the tectonic setting. It is observed that major lineament trends in the western and central basins are N–S, NE–SW, and in the eastern basin N–S, NNE–SSW, while prominent lineament trend for the entire BOB basin is in N–S direction. The statistical analysis of the lineament attributes, viz. lineament density, circular standard deviation, circular variance for the lineaments, reveals that the crust under the central basin has experienced the maximum tectonic disturbances followed by the western and the eastern basins. Euler depth solutions for structural index (SI) zero estimate the possible source depths of the lineaments as (i) 3.0–9.0 km (possibly top sedimentary layer), (ii) 9.0–18.0 km (possibly intermediate sedimentary layer), (iii) 18.0–24.0 km (possibly upper crustal layer), (iv) 24.0–33.0 km (possibly lower crustal layer) and (v) 33.0–64.0 km (possibly associated with Lithosphere). Power spectral analysis and 2D forward modelling indicate that sediment thickness varies from 2.0 to 17.0 km; crustal thickness varies from 4.0 to 16.0 km, and Moho varies from 10 to 34 km depth over the BOB. The present study confirms that the origin of the 85°E ridge is due to the sagging of ridge crust into the mantle lithosphere, whereas the NER has a hotspot origin.

Słowa kluczowe

Bay of Bengal 2D modelling lineament setup analysis radially averaged power spectrum analysis earth gravity static model data

Zatoka Bengalska modelowanie 2D

Wydawca

Instytut Geofizyki PAN
Springer

Czasopismo

Acta Geophysica

Rocznik

2021

Tom

Vol. 69, no. 6

Strony

2011--2033

Opis fizyczny

Bibliogr. 105 poz.

Twórcy

autor

Narayan Satya

Oil and Natural Gas Corporation (ONGC), Dehradun 248003, India

autor

Kumar Ujjawal

Department of Applied Geophysics, Indian Institute of Technology (Indian School of Mines), Dhanbad 826004, India

autor

Pal Sanjit Kumar

sanjitismagp@iitism.ac.in

Department of Applied Geophysics, Indian Institute of Technology (Indian School of Mines), Dhanbad 826004, India

https://orcid.org/0000-0002-4720-2959

autor

Sahoo Soumyashree Debasis

Department of Applied Geophysics, Indian Institute of Technology (Indian School of Mines), Dhanbad 826004, India

Bibliografia

1. Abdul Fattah R, Meekes JAC, Colella S, Bouman J, Schmidt M, Ebbing J (2012) The application of GOCE satellite gravity data for basin petroleum system modelling: a case-study from the Arabian Peninsula. In: First Int. GOCE solid earth workshop Uni. of Twente Netherland pp 1–2
2. Agarwal PK, Pandey OP (1999) Was there an intra-continental rift between India and Sri Lanka? Jour Geol Soc India 54:237–249
3. Anand SP, Rajaram M, Majumdar TJ, Bhattacharyya R (2009) Structure tectonics of 85°E ridge from analysis of geopotential data. Tectonophysics. https://doi.org/10.1016/jtecto200809036
4. Bastia R, Radhakrishna M, Das S, Kale A, Cateneanu O (2010) Delineation of 85°E ridge and its structure in Mahanadi offshore basin Eastern Continental Margin of India (ECMI) from seismic reflection imaging. Mar Petrol Geol 27:1841–1848
5. Biswas SK (1982) Rift basins in western margin of India and their hydrocarbon prospects with special reference to Kutch basin. Am Ass Petrol Geol Bull 66:1497–1513
6. Biswas S, Majumdar RK (1997) Seismicity of the Bay of Bengal: evidence for intraplate deformation of the northern Indian Plate. Tectonophysics 269:323–336
7. Blakely RJ (1996) Potential theory in gravity magnetic applications. Cambridge University Press, Cambridge
8. Borissova I, Coffin MF, Charvis P, Operto S (2003), Structure development of a micro continent; Elan Bank in the southern Indian Ocean. Geochem Geophys Geosys 4
9. Bull JM (1990) Structural style of intra-plate deformation Central Indian Ocean Basin: evidence for the role of fracture zones. Tectonophysics 184:213–228
10. Bull JM, Scrutton RA (1990) Fault reactivation in the Central Indian Ocean and the rheology of oceanic lithosphere. Nature 344:855–858
11. Bull JM, Scrutton RA (1992) Seismic reflection images of intraplate deformation central Indian Ocean and their tectonic significance. J Geol Soc London 149:955–966
12. Chouhan AK (2020a) Structural fabric over the seismically active Kachchh rift basin, India: Insight from world gravity model 2012. Environ Earth Sci. https://doi.org/10.1007/s12665-020-09068-2
13. Chouhan AK, Choudhury P, Pal SK, Singh D (2019) Delineation of subsurface geological fractures in the Cambay rift and surrounding regions of NW India: an integrated approach using satellite derived EIGEN-6C4 gravity data. Geocarto Int. https://doi.org/10.1080/10106049.2020.1716395
14. Chouhan AK, Choudhury P, Pal SK (2020b) New evidence for a thin crust and magmatic underplating beneath the Cambay rift basin, Western India through modelling of EIGEN-6C4 gravity data. J Earth Syst Sci. https://doi.org/10.1007/s12040-019-1335-y
15. Curray JR (1991) Possible green schist metamorphism at the base of a 22 km sediment section Bay of Bengal. Geology 19:1097–1100
16. Curray JR, Munasinghe T (1991) Origin of the Rajmahal Traps and the 85°E ridge: preliminary reconstructions of the trace of the Crozet hotspot. Geology 19:1237–1240
17. Curray JR, Emmel EJ, Moore DG, Russ WR (1982) Structure tectonics and geological history of the Northeastern Indian Ocean. In: AEM Nairn FG St & Ii (Editors). The Gcean Basins Margins Vol 6, the Ind. Ocean Plenum. Press New York pp 399–450
18. Du T (1937), Our Wering Continents; a Hypotheses of Continental Drifting Edinburgh: Oliver & Boyd, 366 pp
19. Evjen HM (1936) The place of the vertical gradient in gravitational interpretations. Geophysics 1:127–136
20. Forste C, Bruinsma S, Abrykosov O, Lemoine JM (2014), The latest combined global gravity field model including GOCE data up to degree order 2190 of GFZ Potsdam GRGS Toulouse. 5th GOCE User Workshop Paris. http://icgem.gfz-potsdam.de
21. Gaina C, Müller RD, Brown B, Ishihara T (2007) Breakup early seafloor spreading between India Antarctica. Geophys J Int 170:151–169
22. Ganguli SS, Singh S, Das N, Maurya D, Pal SK, Rao JV (2019) Gravity and magnetic survey in Southwestern Part of Cuddapah Basin, India and its implication for shallow crustal architecture and mineralization. J Geol Soc India 93:419–430
23. Ganguli SS, Pal SK, Rao JR, Raj BS (2020a) Gravity–magnetic appraisal at the interface of Cuddapah Basin and Nellore Schist Belt (NSB) for shallow crustal architecture and tectonic settings. J Earth Syst Sci 129:1–17
24. Ganguli SS, Pal SK, Singh SL, Rama Rao JV, Balakrishna B (2020b) Insights into crustal architecture and tectonics across Palghat Cauvery Shear Zone, India from combined analysis of gravity and magnetic data. Geol J 55:1–19. https://doi.org/10.1002/gj.4041
25. Ganguli SS, Pal SK, Sundaralingam K, Kumar P (2021) Insights into the crustal architecture from the analysis of gravity and magnetic data across Salem-Attur Shear Zone (SASZ), Southern Granulite Terrane (SGT), India: an evidence of accretional tectonics. Episodes. https://doi.org/10.18814/epiiugs/2020/020095
26. Geller CA, Weissel JK, Anderson RN (1983) Heat transfer and intraplate deformation in the central Indian Ocean. J Geophys Res 88:1018–1032
27. Ghosh GK (2015) Interpretation of gravity data and using 3D Euler deconvolution tilt angle and horizontal tilt angle source edge approximation of the North-West Himalaya. Acta Geophys. https://doi.org/10.1515/acgeo-2016-0042
28. Gilardoni M, Reguzzoni M, Sampietro D (2016) GECO: a global gravity model by locally combining GOCE data and EGM2008. Stud Geophys ET Geodaet 60:228–247
29. Gopala Rao D, Krishna KS, Sar D (1997) Crustal evolution sedimentation history of the Bay of Bengal since the Cretaceous. J Geophys Res 102:17747–17768
30. Holbrook WS, Reiter EC, Purdy GM, Sawyer D, Stoffa PL, Austin JA, Oh J, Makris JJ (1994) Deep structure of the U.S. Atlantic continental margin, offshore South Carolina, from coincident ocean bottom and multichannel seismic data. J Geophy Res 99:9155–9178
31. Horo D, Pal SK, Singh S, Saurabh S (2020) Combined self-potential, electrical resistivity tomography and induced polarisation for mapping of gold prospective zones over a part of Babaikundi-Birgaon Axis, North Singhbhum Mobile Belt, India. Expl. Geophy. 51(1):507–522. https://doi.org/10.1080/08123985.2020.1722026
32. Ismaiel M, Krishna KS, Srinivas K, Mishra J, Saha D (2017) Internal structure of the 85°E ridge Bay of Bengal: evidence for multiphase volcanism. Mar Petrol Geol 80(254):140
33. Jacobsen BH (1987) A case for upward continuation as a standard separation filter for potential field maps. Geophysics 52:390–398
34. Karner GD, Watts AB (1983) Gravity Anomalies and Flexure of the Lithosphere at Mountain Ranges. J Geophys Res 88:10449–10477
35. Krishna KS (2003) Structure and evolution of the Afanasy Nikitin seamount buried hills and 85°E Ridge in the northeastern Indian Ocean. Earth Planet Sci Lett 209:379–394
36. Krishna KS (2014) Two decades of Indian research on Ninetyeast Ridge reveal how seafloor spreading and mantle plume activities have shaped the eastern Indian Ocean. Curr Sci 106(9):1178–1179
37. Krishna KS, Bull JM, Scrutton RA (2001) Evidence for multiphase folding of the central Indian Ocean lithosphere. Geology 29:715–788
38. Krishna KS, Michael L, Bhattacharyya R, Majumdar TJ (2009) Geoid and gravity anomaly data of conjugate regions of Bay of Bengal Enderby Basin- new constraints on breakup early spreading history between India Antarctica. J Geophys Res 114:B03102. https://doi.org/10.1029/2008JB005808
39. Krishna KS, Abraham H, Sager WW, Pringle M, Frey FA, Gopala Rao D, Levchenko OV (2012) Tectonics of the Ninetyeast Ridge derived from the spreading records of the contiguous oceanic basins age constraints of the ridge. J Geophys Res 117:B04101. https://doi.org/10.1029/2011JB008805
40. Krishna KS, Bull JM, Ishizuka O, Scrutton RA, Jaishankar S, Banakar VK (2014a) Growth of the Afanasy Nikitin seamount its relationship with the 85°E Ridge northeastern Indian Ocean. J Earth Syst Sci 123(1):33–47
41. Krishna KS, Ismaiel MK, Srinivas K, Gopala Rao D, Mishra J, Saha D (2016) Sediment pathways and emergence of Himalayan source material in the Bay of Bengal. Curr Sci. https://doi.org/10.18520/cs/v110/i3/363-372
42. Krishna KS et al. (2014b), Structural style and tectonic evolution of Bay of Bengal from Eastern Continental Margin of India (ECMI) to Andaman with special reference to hydrocarbon prospectivity Technical Report (unpublished) submitted to KDMIPE ONGC Dehradun pp 1–344
43. Kumar A, Roy PNS, Das LK (2016) Vertical density contrast mapping of basement Conrad Moho morphologies through 2D spectral analysis of gravity data in around Odisha India. J Asian Earth Sci. https://doi.org/10.1016/j.jseaes.2016.05.002
44. Kumar U, Pal SK, Sahoo SD, Narayan S, Saurabh SM, Ganguli SS (2018) Lineament mapping over sir creek offshore its surroundings using high resolution EGM2008 gravity data: an integrated derivative approach. J Geol Soc India 91:671–678
45. Kumar U, Narayan S, Pal SK (2019) New insights on structure and tectonics over the Laxmi Ridge using EIGEN6C4 modelled gravity data. Indian Ind J Geo-Mar Sci 48(12):1999–2005
46. Kumar S, Pal SK, Guha A, Sahoo SD (2020a) Mukherjee A (2020a), New insights on Kimberlite emplacement around the Bundelkhand Craton using integrated satellite-based remote sensing gravity and magnetic data. Geocart Int. https://doi.org/10.1080/10106049.1756459
47. Kumar U, Narayan S, Pal SK (2020b) Structural and tectonic interpretation of EGM2008 gravity data around the Laccadive ridge in the Western Indian Ocean: An implication to continental crust. Geocart Int. https://doi.org/10.1080/10106049.2020.1856193
48. Laske G, Guy M, Zhitu M, Mike P (2013), Update on CRUST1.0 - A 1-degree Global Model of Earth's Crust. EGU Gen Assemb Vienna, Austria
49. Lyngsie SB, Thybo H, Rasmussen TM (2006) Regional geological and tectonic structures of the North Sea area from potential field modelling. Tectonophysics 413:147–170
50. Ma G (2013) Edge detection of potential field data using improved local phase filter. Explor Geophy 44:36–41
51. Ma G, Li L (2012) Edge detection in potential fields with the normalized total horizontal derivative. Comput Geosci 41:83–87
52. Ma G, Liu C, Li L (2014) Balanced horizontal derivative of potential field data to recognize the edges and estimate location parameters of the source. J App Geophys 108:2–18
53. Majumdar TJ, Chander S (2016) On extraction of linear anomalous features over a part of the 85 degrees E Ridge Bay of Bengal for tectonic studies. Ind J Geo-Mar Sci 45(3):365–370
54. Majumdar TJ, Mohanty KK, Srivastava AK (1998) On the utilization of ERS-1 altimeter data for offshore oil exploration. Int J Rem Sens 19(10):1953–1968
55. Michael L, Krishna KS (2011) Dating of the 85°E Ridge (northeastern Indian Ocean) using marine magnetic anomalies. Curr Sci 100(9):1314–1322
56. Miller HG, Singh V (1994) Potential field tilt a new concept for location of potential field sources. J App Geophys 32:213–217
57. Mishra DC, Chandrasekhar DV, Raju DCV, Vijay Kumar V (1999) Crustal structure based on gravity-magnetic modelling constrained from seismic studies under Lambert rift Antarctica Godavari and Mahanadi rifts and their inter-relationship. Earth Planet Sci Lett 172:287–300
58. Mondal S, Guha A, Pal SK, Porwal A, Chatterjee S, Rani K, Pour AB, Kumar VK (2019) Conjugate utilization of Landsat-8 OLI, ground gravity and magnetic data for targeting mafic cumulates within anorthositic-layered complex of Sittampundi, India. Geocarto Int. https://doi.org/10.1080/10106049.2019.1669726
59. Mukhopadhyay M (1984) Seismo-tectonics of subduction and back-arc rifting under the Andaman Sea. Tectonophysics 108:229–239
60. Mukhopadhyay M, Krishna MR (1991) Gravity field and deep structure of the Bengal Fan and its surrounding continental margins northeast Indian Ocean. Tectonophysics 186:365–386
61. Nair N, Anand SP, Rajaram M (2013) Tectonic framework of Laccadive Ridge in Western Continental Margin of India. Mar Geol 346:79–90
62. Narayan S, Sahoo SD, Pal SK, Kumar U, Pathak VK, Majumdar TJ, Chouhan A (2016) Delineation of structural features over a part of the Bay of Bengal using total and balanced horizontal derivative techniques. Geocarto Int. https://doi.org/10.1080/1010604920161140823
63. Norton IO, Sclater JG (1979) A model for the evolution of the Indian Ocean and the breakup of Gondwanaland. J Geophys Res 84:6803–6830
64. Pal SK, Kumar S (2019) Subsurface structural mapping using EIGEN6C4 data over Bundelkhand craton and surroundings: an appraisal on kimberlite/lamproite emplacement. J Geol Soc India 94(2):188–196
65. Pal SK, Majumdar TJ (2015) Geological appraisal over the Singhbhum-Orissa Craton, India using GOCE, EIGEN6-C2 and in-situ gravity data. Int J Appl Earth Observ Geoinf 35:96–119. https://doi.org/10.1016/j.jag.2014.06.007
66. Pal SK, Majumdar TJ, Pathak VK, Narayan S, Kumar U, Goswami OP (2016a) Utilization of high-resolution EGM2008 gravity data for geological exploration over the Singhbhum-Orissa craton India. Geocarto Int. https://doi.org/10.1080/1010604920151076064
67. Pal SK, Narayan S, Majumdar TJ, Kumar U (2016b) Structural mapping over the 85°E Ridge surroundings using EIGEN6C4 high-resolution global combined gravity field model: an integrated approach. Mar Geophys Res. https://doi.org/10.1007/s11001-016-9274-3
68. Pal SK, Vaish J, Kumar S, Bharti AK (2016c) Coalfire mapping of East Basuria Colliery, Jharia coal field using Vertical Derivative Technique of Magnetic data. J Earth Syst Sci 125(1):165–178
69. Peirce JW (1978) The northward motion of India since the Late Cretaceous. Geophys J R Astrono Soc 52:277–311
70. Pilkington M, Keating PB (2009) The utility of potential field enhancements for remote predictive mapping. Can J Remote Sen 35:S1–S11
71. Radhakrishna M, Subrahmanyam C, Damodharan T (2010) Thin oceanic crust below Bay of Bengal inferred from 3-D gravity interpretation. Tectonophysics 493:93–105
72. Radhakrishna M, Srinivasa Rao G, Nayak S, Bastia R, Twinkle D (2012) Early Cretaceous fracture zones in the Bay of Bengal their tectonic implications: constraints from multi-channel seismic reflection potential field data. Tectonophysics 522:187–197
73. Rajesh S (2006) Studies on the Bay of Bengal oceanic lithosphere based on satellite altimeter-derived geoid and gravity data. Ph.D. Thesis, Gujarat University, Ahmedabad, 187 p
74. Rajesh S, Majumdar TJ (2003) Geoid generation and subsurface structure delineation under the Bay of Bengal, India using satellite altimeter data. Curr Sci 84(11):1428
75. Rajesh S, Majumdar TJ (2004) Generation of 3-D Geoidal surface of the Bay of Bengal lithosphere and its tectonic implications. Int J Remote S 25(15):2897–2902
76. Rajesh S, Majumdar TJ (2010) Geoid height versus topography of the Northern Ninetyeast Ridge: Implications on crustal compensation. Mar Geophys Res. https://doi.org/10.1007/s11001-010-9088-7
77. Rajesh S, Majumdar TJ (2014) Effects of Ninetyeast Ridge Magmatism and Pre India-Eurasia collision dynamics on basement and crust-lithospheric structures of the Northeastern Indian Ocean. J Geol Soc India 84:531–543
78. Rajesh S, Majumdar TJ, Krishna KS (2015) Lithospheric stretching and the long wavelength free-air gravity anomaly of the Eastern Continental Margin of India and the 85°E Ridge Bay of Bengal. Ind J Geo-Mar Sci 44(6):783–794
79. Ramana MV, Subrahmanyam V, Chaubey AK, Ramprasad T, Sarma KVLNS, Krishna KS, Desa M, Murthy GPS (1997) Structure origin of the 85°E Ridge. J Geophys Res 102:17995–18012
80. Ramana MV, Ramprasad T, Desa M (2001) Seafloor spreading magnetic anomalies in the Enderby Basin East Antarctica. Earth Planet Sci Lett 191:241–255
81. Rani K, Guha A, Subhendu M, Pal SK, Kumar V (2018a) ASTER data, ground magnetic data, ground spectroscopy and Space based EIGEN 6C4 data for identifying potential zones gold sulphide mineralization in Bhukia, Rajasthan. India J Appl Geophy 160:28–46. https://doi.org/10.1016/j.jappgeo.2018.10.00
82. Rani K, Guha A, Pal SK, Kumar V (2018b) Satellite-derived regional apparent thermal inertia and gravity for mapping different rock - types: potential analysis in parts of Banswara, Rajasthan. India J Geol Soc India 92(6):671–678
83. Reid AB, Allsop JM, Granser H, Millet AJ, Somerton IW (1990) Magnetic interpretation in three dimensions using Euler deconvolution. Geophysics 55:80–91
84. Royer JY, Peirce JW, Weissel JK (1991) Tectonic constraints on the hotspot formation of Ninetyeast Ridge. Proc Ocean Drill Program Sci Res 121:763–776
85. Sahoo SD, Pal SK (2021) Crustal Structure and Moho topography of the southern part (18°S - 25°S) of central Indian ridge using high resolution EIGEN6C4 global gravity model data. Geo-Mar Lett 41:1–20. https://doi.org/10.1007/s00367-020-00679-z
86. Sahoo SD, S.K., Pal, (2019) Mapping of structural lineaments and fracture zones around the Central Indian Ridge (10°S-21°S) using EIGEN 6C4 Bouguer gravity data. J Geol Soc India 94:359–366
87. Sarma KVLNS, Ramana MV, Ramprasad T, Desa MA, Subrahmanyam V, Krishna KS, Malleswara Rao MM (2002) Magnetic basement in the central bay of Bengal. Mar Geophys Res 23:97–108
88. Schuepbach MA, Vail PR (1980) Evolution of outer highs on divergent continental margins, In: Continental tectonics. Natl Acad Sci Washington, D.C. pp. 50–61
89. Spector A, Grant FS (1970) Statistical models for interpreting aeromagnetic data. Geophysics 35:293–302
90. Sreejith KM, Radhakrishna M, Krishna KS, Majumdar TJ (2011) Development of the negative gravity anomaly of the 85°E Ridge northeastern Indian Ocean-a process oriented modelling approach. J Earth Syst Sci 120(4):605–615
91. Sreejith KM, Rajesh S, Majumdar TJ, Rao GS, Radhakrishna M, Krishna KS, Rajwat AS (2013) High-resolution residual geoid and gravity anomaly data of the northern Indian Ocean–An input to geological understanding. J Asian Earth Sci 62:616–626
92. Srinivasa Rao G, Radhakrishna M, Murthy KSR (2015) A seismotectonic study of the 21 May 2014 Bay of Bengal intraplate earthquake evidence of onshore-offshore tectonic linkage fracture zone reactivation in the northern Bay of Bengal. Nat Haz. https://doi.org/10.1007/s11069-015-1750-6
93. Srinivasa Rao G, Radhakrishna M, Sreejith KM, Krishna KS, Bull JM (2016) Lithosphere Structure upper mantle characteristics below the Bay of Bengal. Geophys J Int. https://doi.org/10.1093/gii/ggw162
94. Subrahmanyam C, Gireesh R, Chand S, KameshRaju KA, Gopala Rao D (2008) Geophysical characteristics of the Ninetyeast Ridge-Andaman Island arc/trench convergent zone. Earth Planet Sci Lett 266:29–45
95. Thompson DT (1982) A new technique for making computer-assisted depth estimates from magnetic data. Geophysics 47:31–37
96. Thurston JB, Smith RS (1997) Automatic conversion of magnetic data to depth, dip, and susceptibility contrast using the SPI (TM) method. Geophysics 62:807–813
97. Tréhu AM, Ballard A, Dorman LM, Gettrust JF, Klitgord KD, Schreiner A (1989) Structure of the lower crust beneath the Carolina Trough, U.S. Atlantic continental margin. J Geophy Res 94:10585–10600
98. Vaish J, Pal SK (2015) Geological mapping of Jharia Coalfield, India using GRACE EGM2008 gravity data: a vertical derivative approach. Geocarto Int 30(4):388–401. https://doi.org/10.1080/10106049.2014.905637
99. Watts AB, Fairhead JD (1999) A process oriented approach to modelling the gravity signature of continental margins. Lead Edge 18:258–263
100. Wegener A (1929) Die Entstehung der Kontinente und Ozeane Braunschweig: Friedr Vieweg und Sohn (English translation by John Biram 1966. The origin of continents and oceans New York: Dover 246 p
101. Weissel JK, Anderson RN, Geller CA (1980) Deformation of the Indo-Australian plate. Nature 287:284–291
102. Whitford DJ, Duncan RA (1978), Origin of the Ninetyeast Ridge-Sr isotope and trace-element evidence. In: US GS Open File Report p. 451–453
103. Wijns C, Perez C, Kowalczyk P (2005) Theta map: edge detection in magnetic data. Geophysics 70:L39–L43
104. Yatheesh V (2020) Structure and tectonics of the continental margins of India and the adjacent deep ocean basins: current status of knowledge and some unresolved problems. Episodes 43(1):586–608
105. Zhang L, Hao T, Wu J, Jian W, Xu Y (2013) A new texture-based operator for edge enhancement of potential-field data. J Appl Geophys 98:182–190

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