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Jasra Complex

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Series: GSA Special Papers
Published: 01 January 2007
DOI: 10.1130/2007.2430(37)
... This article describes an Early Cretaceous Jasra alkaline-mafic-ultramafic igneous complex related to the Kerguelen hotspot–mantle plume system of the Indian Ocean. This complex, emplaced in the Shillong plateau, consists mainly of pyroxenite, gabbro, and nepheline syenite and is closely...
Journal Article
Published: 01 October 2012
Mineralogical Magazine (2012) 76 (5): 1099–1117.
...L. Melluso; R. K. Srivastava; C. M. Petrone; V. Guarino; A. K. Sinha Abstract The rocks of the Jasra intrusive complex (Shillong Plateau, northeastern India) include phlogopite clinopyroxenites (with olivine or perovskite relics), alkali gabbros/monzodiorites, syenites and nepheline syenites...
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Journal Article
Published: 01 July 2016
The Canadian Mineralogist (2016) 54 (4): 803–825.
..., and Mn, showing a similar behavior to pyroxene from basaltic to trachyandesitic magmas, which reflect changes in the liquid line of descent of these magmas ( Streck 2008 ). Similar trends (specifically for Na and Mn) are observed in clinopyroxene from potassic alkaline rocks of the Jasra complex...
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Journal Article
Published: 01 April 2017
Mineralogical Magazine (2017) 81 (2): 217–250.
...Leone Melluso; Vincenza Guarino; Michele Lustrino; Vincenzo Morra; Roberto de’ Gennaro Abstract The Late Cretaceous Itatiaia complex is made up of nepheline syenite grading to peralkaline varieties, quartz syenite and granite, emplaced in the metamorphic rocks of the Serra do Mar, SE Brazil...
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Journal Article
Journal: Clay Minerals
Published: 01 March 2018
Clay Minerals (2018) 53 (1): 53–63.
...-delivery vehicles. In this study, doxorubicin-bentonite nanoclay complex (DOX-Bent complex) was prepared for the first time as a sustained-release drug-delivery system for intratumoural chemotherapy of melanoma. An efficient loading of DOX on 1 mg of bentonite nanoclay as high as 994.45 ± 4.9 µg...
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Journal Article
Journal: Geosphere
Published: 09 April 2019
Geosphere (2019) 15 (3): 856–881.
... area. The northernmost and structurally highest Lohit Plutonic Complex consists of Mesoproterozoic basement rocks (ca. 1286 Ma) and Late Jurassic–Cretaceous granitoids (ca. 156–69 Ma) with positive ε Nd values and initial 87 Sr/ 86 Sr ratios of ∼0.705, which are correlative to the Bomi-Chayu complex...
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Journal Article
Journal: Geophysics
Published: 24 May 2013
Geophysics (2013) 78 (3): WB63–WB76.
... transdimensional uncertainty estimation for complex layered seabeds. Velocity- and attenuation-frequency dependence were modeled using Buckingham’s viscous grain-shearing theory, which predicts frequency dependence similar to that of Biot’s theory at low frequencies but due to different physical causes...
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Journal Article
Published: 01 December 2018
American Mineralogist (2018) 103 (12): 1999–2010.
... . Melluso , L. , Srivastava , R.K. , Petrone , C.M. , Guarino , V. , and Sinha , A.K. ( 2012 ) Mineralogy and magmatic affinity of the Jasra clinopyroxenitic-gabbroicsyenitic complex, Shillong Plateau, northeastern India . Mineralogical Magazine , 76 ( 5 ), 1099 – 1117...
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Journal Article
Journal: Clay Minerals
Published: 01 June 2012
Clay Minerals (2012) 47 (2): 231–242.
... in the octahedral layer. CV studies confirm the formation of an Al-p-TSA complex, suggesting dissolution of aluminium octahedral sheets. The complex subsequently hydrolyses, replacing interlayer cations with Al 3+ ions. Similar treatment with mineral acid resulted in clay with enhanced surface area but with reduced...
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Image
( a ) Geological sketch map of northeastern India showing the locations of ...
Published: 01 October 2012
F ig . 1. ( a ) Geological sketch map of northeastern India showing the locations of Late Cretaceous magmatic activity in the Damodar Valley, Rajmahal and Sylhet Traps and on the Shillong Plateau. ( b ) Geological map of the Jasra alkaline ultramafic–mafic complex (after Srivastava and Sinha
Journal Article
Journal: Lithosphere
Publisher: GSW
Published: 12 December 2019
Lithosphere (2020) 12 (1): 40–52.
...Rajesh K. Srivastava; Fei Wang; Wenbei Shi; Anup K. Sinha; Kenneth L. Buchan Abstract Two distinct sets of Cretaceous dolerite dikes intrude the Chhotanagpur gneissic complex of eastern India, mostly within the Damodar Valley Gondwanan sedimentary basins. One dike set trends NNE to ENE, whereas...
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Journal Article
Journal: GSA Bulletin
Published: 01 May 2016
GSA Bulletin (2016) 128 (5-6): 944–956.
... sediment budget. However, tracking dust source regions through U-Pb dating in a statistically robust manner is particularly complex given the similar age peaks in the age probability distributions of potential source regions in Central Asia. This paper presents 2410 new U-Pb ages of detrital zircons from...
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Journal Article
Published: 09 November 2020
Mineralogical Magazine (2020) 84 (6): 813–838.
... in altered nepheline phenocrysts in phonolites from the Marangudzi alkaline complex, Zimbabwe, are used to define diagnostic parameters for recognising such non-stoichiometry. These alteration lamellae formed hydrothermally from Ca-rich and K-poor fluids. An EXCEL file is provided to help researchers...
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Journal Article
Journal: GSA Bulletin
Published: 01 March 2010
GSA Bulletin (2010) 122 (3-4): 336–359.
... the effect of early Paleozoic deformation. The lithostratigraphy of the Shillong Plateau established by this study and its correlation to the Himalayan units imply that the Greater Himalayan Crystalline Complex may be a tectonic mixture of Indian crystalline basement, its Proterozoic-Cambrian cover sequence...
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(A) Geological sketch map of the eastern and northeastern region of the Ind...
Published: 12 December 2019
—Sylhet tholeiitic basalt; UNL—Um-Ngot lineament; VB—Vindhyan Basin. A to E—Gondwana sedimentary basins (A—Karanpura; B—Bokaro; C—Jharia; D—Raniganj; E—Mahanadi). 1–6—Alkaline-carbonatite complexes in SP-MH (1—Swangkre-Rongjeng; 2—Sung Valley; 3—Mawpyut; 4—Jasra; 5—Samchampi; 6—Barpung).
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Tetra-Plot diagram reporting the main tetrahedral [ [IV] Si (/3),  [IV] Al ...
Published: 01 December 2018
; Lee et al. 2003 ); Cenozoic Madagascar rocks ( Melluso and Morra 2000 ; Melluso et al. 2007 ; Cucciniello et al. 2011 , 2016 ), Ischia Island in Italy ( Melluso et al. 2014 ), Jasra and Sung Valley complexes in India ( Melluso et al. 2010 , 2012 ), and Central Mediterranean lamproites ( Lepore et
Journal Article
Journal: Geology
Published: 01 September 2010
Geology (2010) 38 (9): 807–810.
.... , 1982 , The Late Cretaceous–Cenozoic history of western Baluchistan, Pakistan—The northern edge of the Makran subduction complex , in Legett J.K. , ed ., Trench-forearc geology: Sedimentation and tectonics on modern and ancient active plate margins : Geological Society of London Special...
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Journal Article
Published: 22 January 2020
Seismological Research Letters (2020) 91 (2A): 1003–1018.
... of the MT is generally not valid for earthquake ruptures. Therefore, finite sources with a spatial extent approximating earthquake fault planes have been applied. These include simple rectangular sources ( Haskell, 1964 ; Okada, 1985 ) and more complex finite‐fault sources with hundreds of source...
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Journal Article
Journal: Geophysics
Published: 24 May 2013
Geophysics (2013) 78 (3): WB89–WB99.
..., 2005 ; Jasra et al., 2006 ; Bodin and Sambridge, 2009 ; Charvin et al., 2009 ; Hopcroft et al., 2009 ; Agostinetti and Malinverno, 2010 ; Gallagher, 2012 ). In the description following, we briefly summarize the algorithm described by Gallagher et al. (2011) , which includes mathematical details...
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Journal Article
Published: 01 February 2011
Clays and Clay Minerals (2011) 59 (1): 13–20.
... – 2496 . Fajnor , V.S. and Hlavaty , V. ( 2002 ) Thermal stability of clay/organic intercalation complexes . Journal of Thermal Analysis and Calorimetry , 67 , 113 – 118 . Ganguly , S. , Dana , K. , and Ghatak , S. ( 2010 ) Thermogravimetric study of n...
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