Log in

Relevant bibliographies by topics / Schist belt / Journal articles

To see the other types of publications on this topic, follow the link: Schist belt.

Journal articles on the topic 'Schist belt'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Schist belt.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Bhat, S. S., A. Bhattacharya, H. C. Dasgupta, and D. Dasgupta. "Petrochemistry of a Gametiferrous Chlorite Schist Horizon from the Sandur Schist Belt, Karnataka." Journal Geological Society of India 45, no. 5 (1995): 539–46. http://dx.doi.org/10.17491/jgsi/1995/450505.

Full text

Abstract:

Abstract Petrology and mineral chemistry of garnetiferrous chlorite schists belonging to Deogiri formation in the Sandur schist belt have been studied. Mineral assemblages and chemical data on muscovite, biotite, chlorite, garnet from the Deogiri chlorite schists indicate low grade regional metamorphism under greenschist facies condition. Mineralogy of the metabasics associated with Deogiri chlorite schists and with the overlying Donimalai formation in this region, except near the peripheral contacts, also suggest greenschist facies metamorphism for the schist belt. Mineralogy and chemistry of

APA, Harvard, Vancouver, ISO, and other styles

2

Banerjee, D. C., N. Ranganath, P. B. Maithani, and K. M. V. Jayaram. "Rare Metal-Bearing Pegmatites in Parts of Southern Karnataka, India." Journal Geological Society of India 30, no. 6 (1987): 507–13. http://dx.doi.org/10.17491/jgsi/1987/300605.

Full text

Abstract:

Abstract Several pegmatites containing commercially viable sources of columbite-tantalite have been located in the Holenarsipur, Kdshnarajapet and Nagamangala schist belts. The pegmatites in Holenarsipur schist belt near Hassan, contain columbite-tantalite, rich in both niobium and tantalum and carry appreciable amounts of beryl. The Nagamangala schist belt is particularly rich in tantalite-bearing (Ta2O5 50-70%) pegmatites. Analysis of feldspars from the three different belts indicates that they are potassic in the Nagamangala belt while they are sodic in the case of two other belts. Trace el

APA, Harvard, Vancouver, ISO, and other styles

3

Pichamuthu, C. S. "Chitradurga Schist Belt." Journal Geological Society of India 26, no. 8 (1985): 509–10. http://dx.doi.org/10.17491/jgsi/1985/260801.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Abdus-Salam, Maryam. "Geochemistry and mineral chemistry of quartz mica schists within Iseyin-Oyan Schist Belt, Southwestern Nigeria." Indian Journal of Science and Technology 13, no. 41 (2020): 4319–31. http://dx.doi.org/10.17485/ijst/v13i41.1628.

Full text

Abstract:

Background/Objectives: The Iseyin-Oyan schist belt is made up metasedimentary rocks, gneisses, granites and pegmatite intrusions. The study was aimed at identifying the schist within this belt and assess their metamorphism, geochemical characteristics and tectonic origin. Methods: Detailed geologic field mapping was undertaken where rocks were located, studied in-situ and identified. Samples of the schist were prepared for petrographic studies. Mineralogical contents were determined using X-Ray Diffraction technique. Polished sections were studied for mineral chemistry using Scanning Electron

APA, Harvard, Vancouver, ISO, and other styles

5

Maryam, Abdus-Salam, Bolarinwa Anthony, Olatunji Akinade, et al. "Geochemistry and mineral chemistry of quartz mica schists within Iseyin-Oyan Schist Belt, Southwestern Nigeria." Indian Journal of Science and Technology 13, no. 41 (2020): 4319–31. https://doi.org/10.17485/IJST/v13i41.1628.

Full text

Abstract:

Abstract <strong>Background/Objectives:</strong> The Iseyin-Oyan schist belt is made up metasedimentary rocks, gneisses, granites and pegmatite intrusions. The study was aimed at identifying the schist within this belt and assess their metamorphism, geochemical characteristics and tectonic origin. <strong>Methods</strong>: Detailed geologic field mapping was undertaken where rocks were located, studied in-situ and identified. Samples of the schist were prepared for petrographic studies. Mineralogical contents were determined using X-Ray Diffraction technique. Polished sections were s

APA, Harvard, Vancouver, ISO, and other styles

6

Omang, B. O., E. A. Asinya, E. Udinmwen, and O. P. Oyetade. "Structural framework and deformation episodes in the igarra schist belt, southwestern nigeria." Global Journal of Geological Sciences 20, no. 1 (2022): 1–17. http://dx.doi.org/10.4314/gjgs.v20i1.1.

Full text

Abstract:

The structural framework of the Igarra schist belt consists of brittle (mainly fractures) and ductile (foliation, cleavage, folds, lineations, strain markers) structures. The geometry of these structures reveals two major occurrences of transpressional deformation affected the schist belt. These are an older dominantly ductile deformation with NW–SE λ1 which developed foliations, cleavage, folds, and mineral/stretching lineations deforming only the metasediments and a younger brittle–ductile, E-W tectonic shortening deformation which closed deformations in the Igarra schist belt, deforming bot

APA, Harvard, Vancouver, ISO, and other styles

7

Rama Rao, P., and V. Diyakara Rao. "Origin of Polyphase Gneisses Associated with the Krishnarajpet Greenstone Belt, Dharwar Craton." Journal Geological Society of India 43, no. 5 (1994): 539–47. http://dx.doi.org/10.17491/jgsi/1994/430505.

Full text

Abstract:

Abstract Hornblende, biotite and feldspar rich gneisses (HG, BG and FG respectively), in that order of formation are associated with the Krishnarajpet schist belt in Dharwar craton, a greenstone belt coeval with, and similar to, the Holenarasipur and Nuggihalli schist belts. These gneisses show compositional differences with SiO2, K2O and Rb increasing and TiO2, Al2O3, Fe2O3, CaO, MgO, Sr, Zr and Ni decreasing from HO to SO and FG. The overall REE is more in BG (SREE = 332.90), while it is similar in HG (SREE = 173.36) and FG (SREE = 159.03) with comparable LREE/HREE ratios (BG = 12.71; HG = 1

APA, Harvard, Vancouver, ISO, and other styles

8

Raghunatha Rao, B. N. "Chitradurga Schist Belt - A Summary." Journal Geological Society of India 26, no. 8 (1985): 607–10. http://dx.doi.org/10.17491/jgsi/1985/260808.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Suresh, R. "Early Life in the Chitradurga Schist Belt." Journal Geological Society of India 26, no. 8 (1985): 611–16. http://dx.doi.org/10.17491/jgsi/1985/260809.

Full text

Abstract:

Abstract The Archean Chitradurga schist belt (&gt;2600 m.y.) is ideal for the investigation of morphological and chemical remnants of early life because of the presence of distinct sedimentary units. Available data so far, has not indicated the presence of undoubted microfossils from the Chitradurga belt. Possible microfossils from the Dodguni area are the only reliable evidences of early life from the Chitradurga schist belt.

APA, Harvard, Vancouver, ISO, and other styles

10

Masquelin, Henri, Hernán Silva Lara, Leda Sánchez Bettucci, et al. "Lithologies, structure and basement-cover relationships in the schist belt of the Dom Feliciano Belt in Uruguay." Brazilian Journal of Geology 47, no. 1 (2017): 21–42. http://dx.doi.org/10.1590/2317-4889201720160119.

Full text

Abstract:

ABSTRACT: This work is the result of a multiyear effort to use field geology to describe lithologies, to establish contact relationships and to create a sketch of the tectonic evolution of the Meso- to Neoproterozoic metasedimentary successions within the Schist Belt of the Dom Feliciano Belt. This low-grade metamorphic cover rests on the high-grade metamorphic basement of the La China and Las Tetas complexes. This basement is Archean-Paleoproterozoic in age. The Schist Belt is overlapped unconformably by the Barriga Negra formation. The Lavalleja complex and the Barriga Negra formation both d

APA, Harvard, Vancouver, ISO, and other styles

11

Naqvi, S. M. "Chitradurga Schist Belt - An Archaean Suture (?)." Journal Geological Society of India 26, no. 8 (1985): 511–25. http://dx.doi.org/10.17491/jgsi/1985/260802.

Full text

Abstract:

Abstract Chitradurga schist belt is a 450 km long linear feature of Archaean age and composed of several types of volcanic and sedimentary rocks. It has been deformed by 3-phases of folding rendering elucidation of stratigraphic sequence complicated. The volcanic rocks range in composition from Spinifix Textured Peridotitic Komatiite (STPK) to rhyolite. Volcanism appears to have occurred, at least at two diflerent stratigraphic levels in the belt. The STPK, basalt and rhyolite suites are not genetically related with each other, except in Gadag, where basalt-rhyolite may be cogenetic phases of

APA, Harvard, Vancouver, ISO, and other styles

12

Srinivasan, R., S. M. NAQVI, and B. Vasantha Kumar. "Archaean Shelf-Facies and Stromatolite Proliferation in Dharwar Supergroup, North Kanara District, Karnataka." Journal Geological Society of India 35, no. 2 (1990): 203–12. http://dx.doi.org/10.17491/jgsi/1990/350209.

Full text

Abstract:

Abstract The stromatolitic cherty dolomite of KaIche is a lithostratigraphic equivalent of the carbonate rocks of the Joldhal Formation of Archaean age. Morphotypes suggest development in subtidal to lower intertidal zone of the Dharwar seas. Some of the forms observed near Kalche are comparable to the domical forms observed near Kumsi in the Shimoga schist belt and Vanivilaspura in the Chitradurga schist belt. The morphotypes observed in these regions contrast with the actively and passively branched columnar stromatolites observed near Dodguni and Bhimasamudra in the Chitradurga schist belt

APA, Harvard, Vancouver, ISO, and other styles

13

NUONG, N. D., T. ITAYA, and Y. NISHIMURA. "Age (K–Ar phengite)–temperature–structure relations: a case study from the Ishigaki high-pressure schist belt, southern Ryukyu Arc, Japan." Geological Magazine 145, no. 5 (2008): 677–84. http://dx.doi.org/10.1017/s0016756808004998.

Full text

Abstract:

AbstractThe Ishigaki high-pressure schist belt in the southern Ryukyu Arc is correlated with the Suo high-pressure schist belt in southwest Japan. The former metamorphic sequence is composed mainly of basic and pelitic schists and is subdivided into three zones, the lower-grade zone A, the medium-grade zone B and the high-grade zone C, based on the mineral assemblages of the basic schists. The K–Ar phengite age gives 188–205 Ma for zone A, 196–206 Ma for zone B and 208–220 Ma for zone C, while the apparent d002 spacing of carbonaceous materials is 3.590–3.437 Å, 3.415–3.390 Å and 3.387–3.364 Å

APA, Harvard, Vancouver, ISO, and other styles

14

Sugavanam, E. B., C. Mallikarjuna, and K. T. Vidyadharan. "Archaean Meta Lamprophyres from Nuggihalli Schist Belt, Hassan District - Karnataka." Journal Geological Society of India 43, no. 2 (1994): 115–37. http://dx.doi.org/10.17491/jgsi/1994/430202.

Full text

Abstract:

Abstract The Archaean Dharwar greenstone belts of Karnataka predominantly consist of iron enriched tholeiitic Metabasalts, basaltic komatiites, sulphidic chert bands and argillite-graywacke sequence. In Nuggihalli schist belt, in association with mafic-ultramafic rocks, calc-alkaline lamprophyres (Spessartite-Kersantite suite), comparable with Kamblada-Yilgam of Western Australia, have been recorded for the first time. Gold mineralisation is associated with these meta-lamprophyres. The lamprophyres, in Nuggihalli belt, is a highly banded hornblende-biotite rich quartzo-felspathic rock, forming

APA, Harvard, Vancouver, ISO, and other styles

15

Hanumanthu, R. C., and P. B. Babaiah. "Origin of Granites Adjoining Ramagiri Schist Belt, Anantapur District, Andhra Pradesh." Journal Geological Society of India 48, no. 1 (1996): 57–63. http://dx.doi.org/10.17491/jgsi/1996/480108.

Full text

Abstract:

Abstract The tonalite-granodiorite suite adjoining the Ramagiri schist belt carry enclaves of amphibolites. The chemistry of this suite suggests that it is magmatic, metaluminous and calc-alkaline, and it is grouped under 'mixed' origin. Various lines of evidences show that this tonalite-granodiorite suite is a partial melt of the amphibolite of the Ramagiri schist belt which was recyled at the crust-mantle levels.

APA, Harvard, Vancouver, ISO, and other styles

16

Liu, Deng, and Dai Yong Cao. "Regional Geology Background and Minerogenetic Series in Ongniud Banner of Inner Mongolia." Advanced Materials Research 734-737 (August 2013): 408–17. http://dx.doi.org/10.4028/www.scientific.net/amr.734-737.408.

Full text

Abstract:

Ongniud Banner is located in the northern margin of the North China platform, possessing binary attribute of the greenville period orogenic belt and North China block. The authors reclassify geological unit through the rock stratigraphic correlation and isotope chronology. Achaean strata is mainly composed of quartz schist, chlorite schist, amphibole schist, and the rocks have been highly metamorphosed into the green schist facies, and its single particle zircon U-Pb age is 2645 ±86Ma, so it is assigned to North China block. Proterozoic strata is mainly composed of metamorphic complex includin

APA, Harvard, Vancouver, ISO, and other styles

17

ZHAN, Chun, Hu YANG, Jia WANG, Mingyuan ZHANG, Tao HE, and Jun LIANG. "Characteristics of Metamorphic Rocks and the Deformation and Metamorphism Period in Northern Lhasa,Tibet." Chinese Earth Sciences Review 3, no. 2 (2024): 67–80. http://dx.doi.org/10.48014/cesr.20240408001.

Full text

Abstract:

The study of metamorphic rocks and deformation and metamorphic features in Gangdise-Lhasa metamorphic zone is helpful for the establishment of regional tectonic framework and the discussion of the evolution history of the region, which will provide new basic data for the study of geological structure evolution in the Qinghai-Tibet Plateau. There are few studies on metamorphic rocks in the northern area of Lhasa, Tibet. This paper summarizes and studies them from the perspective of petrography, and briefly discusses the stages of deformation and metamorphism. The area is divided into two metamo

APA, Harvard, Vancouver, ISO, and other styles

18

Hussain, S. M., and S. M. Naqvi. "The Conglomerates of Holenarasipur Schist Belt and the Nature of Pre-Holenarasipur Crust of Peninsular India." Journal Geological Society of India 31, no. 6 (1988): 538–45. http://dx.doi.org/10.17491/jgsi/1988/310602.

Full text

Abstract:

Abstract Two types of conglomerates occur in the Holenarasipur schist belt. The Tattekere conglomerate occurring in the older horizon (&gt;3.4 b.y.) ofthe belt is oligomictic and is tectogenic (autoclastic), devoid of pebbles of detrital sedimentary origin. The Gopalapura conglomerate occurring in the younger horizon (3.2 to 3.0 b.y.) of the belt is, on the other hand, polymictic and sedimentogenic. Occurrence of gneiss pebbles in this conglomerate indicates presence of gneissic terrain in the source area and strongly supports the view that considerable sialic crust had evolved before the

APA, Harvard, Vancouver, ISO, and other styles

19

Sar, Abdullah, Mustafa Eren Rizeli, and Mehmet Ali Ertürk. "Mineralogical and Petrographical Features of Southeast Anatolian Metamorphic Complex (Pütürge Metamorphics, Eastern Taurides-Türkiye)." Advances in Geological and Geotechnical Engineering Research 6, no. 2 (2024): 1–11. http://dx.doi.org/10.30564/agger.v6i2.6267.

Full text

Abstract:

Pütürge Metamorphics, located within the nappe zone in the Southeastern Anatolian Orogenic Belt (SAOB), crop out in large areas in the study area. Pütürge Metamorphics were examined in the Upper Metamorphic and Lower Metamorphic Unit. Lower Metamorphic Unit; It is represented by amphibolite, amphibole schist, biotite schist, granitic gneiss and augen gneises Upper Metamorphic Unit; with kyanite quartzite veins, muscovite schist, mica schist, garnet mica schist, garnet quartz mica schist, chloritoid chlorite schist and marbles. Pütürge Metamorphics start with augen gneisses at the base and are

APA, Harvard, Vancouver, ISO, and other styles

20

Satyanarayan, K., R. Dhana Raju, and D. N. Kanungo. "Geochemistry of Amphibolites from the Nellore Schist Belt, Andhra Pradesh, India: An Example of Back-Arc Basin Low-K Tholeiitic Magmatism." Journal Geological Society of India 44, no. 3 (1994): 253–65. http://dx.doi.org/10.17491/jgsi/1994/440303.

Full text

Abstract:

Abstract Geochemistry of ortho-amphibolites from the Degapudi-Kalichedu area of the Nellore Schist Belt (NSB), an Archaean greenstone belt in southeastern India, has indicated their affinity to a low-K tholeiitic magma derived from an LIL-enriched, apatite-bearing mantle by about 5-20% partial melting, followed by fractional crystallization. Amphibolites range from high-Mg-type early differentiates (massive amphibolite and actinolite schist) to low-Mg-type middle-stage differentiates (schistose amphibolite, hornblende schist and related gametiferous hornblende schist). During and subsequent to

APA, Harvard, Vancouver, ISO, and other styles

21

Martins, Grace, Peter Mafimisebi, Bidemi Ehinmentan, Alex America, and Gideon Gbadero. "Geochemistry and Petrogenesis of Schists: A Case Study of Sheets 203 (Lafiagi) SW and 224 (Osi) NW, Southwestern Nigeria." Irish Interdisciplinary Journal of Science & Research 08, no. 04 (2024): 01–09. http://dx.doi.org/10.46759/iijsr.2024.8401.

Full text

Abstract:

Large distributions of meta-sedimentary rocks of the Precambrian period are visible and have been deposited in association with Schist rocks in Sheets 203 (Lafiagi) SW and 224 (Osi) NW in southwestern Nigeria. Below these formations are Migmatitic and granitic gneisses which have been intruded by granitoids of Late to Post Pan African age. From petrographic and geochemical studies, the meta-sedimentary rocks are identified as pelitic schists which are derived from immature feldspathic volcanic rocks of arkose to greywacke range. The high concentration of Ba about Rb content shows that the sour

APA, Harvard, Vancouver, ISO, and other styles

22

Raghavan Nambiar, A. "Vengad Conglomerate of Wynad Schist Belt, Kerala." Journal Geological Society of India 26, no. 9 (1985): 659–65. http://dx.doi.org/10.17491/jgsi/1985/260904.

Full text

Abstract:

Abstract The Vengad Conglomerate is a basal polymict conglomerate, separating the high-grade Wynad Group of rocks from the low grade Vengad Group. The conglomerate along with the other members of the Vengad Group has undergone two phases of deformation and has attained lower amphibolite facies metamorphism. The petrography and chemistry of the pebbles and the matrix indicate the source area to be a mixed terrain consisting of tonalite-trondhjemite gneisses, mafic-ultramafic rocks, quartzites and quartz veins.

APA, Harvard, Vancouver, ISO, and other styles

23

Ayodele, Olusiji Samuel. "Geochemical Exploration for Heavy Metals in the Stream Sediments of Okemesi-Ijero Area." Journal of Advance Research in Applied Science (ISSN: 2208-2352) 3, no. 4 (2018): 01–29. http://dx.doi.org/10.53555/nnas.v3i4.648.

Full text

Abstract:

The bedrocks and gold mineralization have been widely studied especially, in the southern extension of the Ilesha schist belt, but information regarding stream sediments in the area is rarely available in literature. The present study therefore, focused on stream sediments geochemical survey of Okemesi/Ijero axis within the northern extension of Ilesha schist belt using an integrated approach to elucidate the heavy metals potentials and its possible controlling environmental geological conditions. Detailed geological survey involved lithological and structural assessment of the bedrocks. Thirt

APA, Harvard, Vancouver, ISO, and other styles

24

Usman, Ahmed K., Mahmood Umar, Bala Balarabe, Yusuf A. Hassan, Aliyu Muhammad, and Saidat O. Abdulrasheed. "Assessment of the Economic Significance of Gold: A Reappraisal of the Ilesha Schist Belt, Southwestern Nigeria." International Journal of Social Science Research and Review 8, no. 5 (2025): 124–31. https://doi.org/10.47814/ijssrr.v8i5.2714.

Full text

Abstract:

Nigeria, endowed with significant gold deposits, holds substantial economic potential, particularly in the northwest and southwest regions within the Schist Belts. In the Iperindo axis of the Ilesha Schist Belt, artisanal mining has been reported; however, the lack of comprehensive geoscience data hinders optimal resource development. This study evaluates the economic viability of gold occurrences in the area, leveraging geoscience research findings. To assess gold mineralization potential, Geonics EM34-3 and SuperSting R8/IP/SP meters were used for frequency domain electromagnetic (FDEM) and

APA, Harvard, Vancouver, ISO, and other styles

25

Natarajan, W. K., and M. M. Mukherjee. "A Note on the Auriferous Banded Iron-Formation of Kolar Schist Belt." Journal Geological Society of India 28, no. 2-3 (1986): 218–22. http://dx.doi.org/10.17491/jgsi/1986/280207.

Full text

Abstract:

Abstract Banded Iron-Formation (BIF) comprising quartz, pyrrhotite/grunerite-actinolite and quartz, magnetitejgrunerite-actinolite occurs widely in Kolar schist belt as narrow (0.5 rom to few tens of metres wide) interbeds within the metamorphosed basic volcanic and acid volcanogenic rocks (' Champion gneiss '). All gradations between these two end members render the BIF bands heterogeneous in composition. The sulphidic BIF horizons occurring near the western margin of the schist belt in association with pillowed metabasaJts are persistent along strike for several kiJometres and are auriferous

APA, Harvard, Vancouver, ISO, and other styles

26

Rajamani, V., E. J. Krogstad, G. N. Hanson, and S. Balakrishnan. "Are Patna and Bisanattam Granites (Adjoining the Kolar Schist Belt) cogenetic?" Journal Geological Society of India 30, no. 2 (1987): 98–105. http://dx.doi.org/10.17491/jgsi/1987/300208.

Full text

Abstract:

Abstract Structural and geochemical evidence including major and trace elements, and Pb-isotopic data on K-feldspars, froin the granitoid rocks adjoining the Kolar Schist Belt are presented to show (1) that the Patna Granite an the NW of the belt is dissimilar to any granitoid rock E of the belt and (2) that the main granitoid gneiss immediately E of the belt, the Karnbha Gneiss, is nearly identical to the Bisanattam Granite of Narayanaswamy er al (1960).

APA, Harvard, Vancouver, ISO, and other styles

27

Chadwick, Brian, V. N. Vasudev, and Nazeer Ahmed. "The Sandur Schist Belt and its Adjacent Plutonic Rocks Implications for Late Archaean Crustal Evolution in Karnataka." Journal Geological Society of India 47, no. 1 (1996): 37–57. http://dx.doi.org/10.17491/jgsi/1996/470116.

Full text

Abstract:

Abstract Six formations are defined in a new lithostratigraphy of the volcanic and sedimentary rocks of the schist belt. The formations (Yeshwantnagar, Deogiri, Raman Mala, Donimalai, Taluru, Vibhuti Gudda) young consistently northeast, except for a part of the Taluru Formation in the northeast of the belt. We propose the new term Sandur Group to include these formations. Their combined thickness of c.35 km is in part an effect of thrust thickening. The Sandur Group was deposited in mainly shallow marine environments in a setting comparable with that of unstable mixed-mode basins. An incomplet

APA, Harvard, Vancouver, ISO, and other styles

28

Ramachandran, G., and Sankha Das. "Petrology and Geochemistry of the Ultramafic Rocks of Yerrabali Schist Belt, Eastern Dharwar Craton, Telangana, India." Journal Of The Geological Society Of India 100, no. 5 (2024): 692–706. http://dx.doi.org/10.17491/jgsi/2024/173892.

Full text

Abstract:

Abstract The Yerrabali schist Belt (YSB) is a NW–SE trending 10 km long and 4 km wide belt located at the north eastern corner of Eastern Dharwar Craton (EDC) consisting of Banded Magnetite Quartzite (BMQ), ultramafic rocks, quartz–cordierite– gedrite ± garnet bearing schist, sillimanite–garnet–cordierite schist, metadolomite, amphibolite, ferruginous quartzite, tremolite schist and dolerite dyke. The ultramafic rocks consist of olivine, orthopyroxene, clinopyroxene and spinel. The Fe content of olivine varies from 88-91 and consists of high amount of NiO (0.3-0.511%). Orthopyroxone are enstat

APA, Harvard, Vancouver, ISO, and other styles

29

OKUDAIRA, T., T. HAMAMOTO, B. HARI PRASAD, and RAJNEESH KUMAR. "Sm–Nd and Rb–Sr dating of amphibolite from the Nellore–Khammam schist belt, SE India: constraints on the collision of the Eastern Ghats terrane and Dharwar–Bastar craton." Geological Magazine 138, no. 4 (2001): 495–98. http://dx.doi.org/10.1017/s001675680100543x.

Full text

Abstract:

The Nellore–Khammam schist belt, SE India, is sandwiched in between the Proterozoic Eastern Ghats terrane and the Archaean Dharwar–Bastar craton. We report Sm–Nd and Rb–Sr mineral isochron ages of amphibolite from the schist belt. The Sm–Nd and Rb–Sr ages are 824±43 Ma and 481±16 Ma, respectively. The Sm–Nd age indicates the timing of peak metamorphism, whereas the Rb–Sr age indicates the Pan-African thermal overprint. The peak metamorphism was related to collision of the Eastern Ghats terrane with the Dharwar-Bastar craton, which occurred during early Neoproterozoic time.

APA, Harvard, Vancouver, ISO, and other styles

30

Srikantappa, C., B. N. Shankar, and V. N. Vasudev. "Spinifex-Textured Peridotitic Komatiite from Karighatta, Chitradurga Schist Belt, Karnataka." Journal Geological Society of India 40, no. 2 (1992): 175–78. http://dx.doi.org/10.17491/jgsi/1992/400209.

Full text

APA, Harvard, Vancouver, ISO, and other styles

31

Jafri, S. H., D. V. Subba Rao, S. M. Ahmad, and Ramavati Mathur. "Spinifex Textured Peridotitic Komatiite from Nuggihalli and R.N. Pur Schist Belts, Karnataka." Journal Geological Society of India 49, no. 1 (1997): 33–38. http://dx.doi.org/10.17491/jgsi/1997/490104.

Full text

Abstract:

Abstract Spinifex textured ultramafic rocks occur at Bhaktarahalli in Nuggihalli schist belt and as an enclave within the Peninsular Gneiss near Dodda Gudda, Holenarasipur belt in Hassan District. They have Komatiitic chemistry pointing to ultramafic volcanism in the Dharwar Craton during the Archaean Era.

APA, Harvard, Vancouver, ISO, and other styles

32

Nutman, A. P., Brian Chadwick, B. Krishna Rao, and V. N. Vasudev. "SHRIMP U/Pb Zircon Ages of Acid Volcanic Rocks in the Chitradurga and Sandur Groups, and Granites Adjacent to the Sandur Schist Belt, Karnataka." Journal Geological Society of India 47, no. 2 (1996): 153–64. http://dx.doi.org/10.17491/jgsi/1996/470202.

Full text

Abstract:

Abstract SHRIMP U/Pb dating of zircon grains from a schistose acid volcanic rock from the Daginkatte Formation in the Chitradurga Group of the Late Archaean Dhwar Supergroup in western Karnataka has yielded a precise concordant age of 2614 ± 8 Ma which indicates the time of melt crystallisation. In contrast, zircons from similar schistose acid volcanic rocks in the Vibhuti Gudda Formation of the Sandur Group in the Sandur schist belt of eastern Karnataka yielded less precise concordia intercept ages of 2658±14 and 2691±18 Ma. Zircons from high-strain grey gneisses which appear to be the oldest

APA, Harvard, Vancouver, ISO, and other styles

33

Ahmad, Isah Haruna, Sambo Umar Umar, Rilwan Abdulraouf, Daya Mohammed Audu, Abdullahi Nabage Nuru, and Aliyu Mustapha. "Gold Preliminary Exploration around Karau-Karau Schist Belt, NW-Nigeria." International Journal of Geology and Earth Sciences 3, no. 4 (2017): 1–10. https://doi.org/10.5281/zenodo.1612852.

Full text

Abstract:

The preliminary study was aimed at identifying gold enriched targets worth investing resources for detail exploration project before mining. Geological mapping of the study area which forms part of the karau-karau schist beltreveals that lithologically the area composed of Pre-Cambrian gneisses, fine to medium grain granite, porphyritic biotite granite, porphyritic hornblende granite, diorite as well as the metasediments which are mostly muscovite-biotite schist, phyllites and quartzites. Guided by the geophysical technique using gold detector (BR 800-P metal detector), a total of five pits an

APA, Harvard, Vancouver, ISO, and other styles

34

Zachariah, John K., Manoj K. Mohanta, and V. Rajamani. "Accretionary Evolution of the Ramagiri Schist Belt, Eastern Dharwar Craton." Journal Geological Society of India 47, no. 3 (1996): 279–91. http://dx.doi.org/10.17491/jgsi/1996/470302.

Full text

Abstract:

Abstract The gold mineralized Ramagiri Schist Belt is a volcanic dominated, late Archaean belt in the eastern Dharwar Craton. Based on the lithological association, mode of occurrence of rocks, geochemical characteristics of mantle derived rocks and the metamorphic grade of rocks, the belt is divided into three blocks that are tectonically interleaved with and surrounded by granitic rocks of distinct histories. The eastern block has amphibolite facies rocks, dominantly basic metavolcanics having light rare earth element (LREE) depleted patterns with minor banded ferruginous quartzite (BFQ). Th

APA, Harvard, Vancouver, ISO, and other styles

35

Vasudev, V. N., S. M. Naqvi, M. Shukla, and B. Uday Raj. "Stromatolites from the Chert-Dolomites of Archaean Shimoga Schist Belt, Dharwar Craton, India." Journal Geological Society of India 33, no. 3 (1989): 201–5. http://dx.doi.org/10.17491/jgsi/1989/330302.

Full text

Abstract:

Abstract Stromatolites of stratifera type showing development of pseudocolumnar structures occur both in chert as well as dolomites near the Kumsi Manganese Mines in the Shimoga schist belt. This report ot stromatolites in the Shimoga belt further confirms widespread biogenic activity prior to 2.6 Ga in the Dharwar Craton.

APA, Harvard, Vancouver, ISO, and other styles

36

Giritharan, T. S., and V. Rajamani. "Geochemistry of the Metavolcanics of the Hutti-Maski Schist Belt, South India: Implications to Gold Metallogeny in the Eastern Dharwar Craton." Journal Geological Society of India 51, no. 5 (1998): 583–94. http://dx.doi.org/10.17491/jgsi/1998/510503.

Full text

Abstract:

Abstract The Hutti-Maski schist belt in the eastern Dharwar craton consists predominantly of mafic metavolcanics metamorphosed to amphibolite facies. The amphibolites are tholeiitic in composition with higher abundances of iron and with flat to LREE enriched rare earth patterns. Modelling of major and trace elements suggests that the tholeiitic protoliths were formed from melt enriched mantle sources by different extents of partial melting at pressures -25 kbars. The most common mafic metavolcanics in the three auriferous schist belts of eastern Dharwar craton such as the Kolar. the Ramngiri a

APA, Harvard, Vancouver, ISO, and other styles

37

Bidyaluxmi, Ngangbam, and Suparna Tewari. "Field Investigation with their Textural Relationship of the Metapelites around Gopinathpur, East Singhbhum, India." Journal Of The Geological Society Of India 101, no. 4 (2025): 487–95. https://doi.org/10.17491/jgsi/2025/174120.

Full text

Abstract:

ABSTRACT Proterozoic mobile belts are considered as fringing region of the Archaean-Proterozoic cratons and preserve the best evidence of sedimentation, magmatism, deformation, and metamorphism depending on the type of tectonic settings. The North Singhbhum Mobile Belt (NSMB) is a north-dipping ductile shear zone of Proterozoic age distinguished by multiple folded, low to mediumgrade metapelites and meta-igneous rocks sandwiched between the Archaean Singhbhum Craton in the South, and the Palaeo-Neo Proterozoic Chotanagpur Gneissic Complex (CGC) in the north. Since NSMB consists of a thick sequ

APA, Harvard, Vancouver, ISO, and other styles

38

Krishna Rao, B., M. Hanuma Prasad, V. N. Vasudev, and M. S. Sethumadhav. "Origin of Grunerite Schist-Hosted Magnesite Mineralization in Copper Mountain Area, Sandur Schist Belt, Karnataka." Journal Geological Society of India 44, no. 3 (1994): 267–74. http://dx.doi.org/10.17491/jgsi/1994/440304.

Full text

Abstract:

Abstract Magnesite mineralization in the Copper Mountain areaofthe Sandurschist belt occurs scattered in a 5 km long and 50 to 200 m wide grunerite schist unit of Late Archaean age. Magnesite occurs mostly as less than a cm to about 50 cm thick parallel to subparallel veins. The veins are confined to gently dipping joints and tensional fractures transecting the steeply dipping bedding and schistosity of the host rock. Magnesite is cryptocrystalline and is associated with minor amounts of dolomite/magnesian calcite, calcite, cryptocrystalline silica and iron oxyhydroxides. Magnesite veins are e

APA, Harvard, Vancouver, ISO, and other styles

39

Srinivasan, K. N., V. Ganesan, D. Roop Kumar, K. S. Murti, and N. V. Rao. "Occurrence of Anorthosite Near Sripuram, Khammam Schist Belt, Andhra Pradesh." Journal Geological Society of India 50, no. 3 (1997): 297–301. http://dx.doi.org/10.17491/jgsi/1997/500307.

Full text

Abstract:

Abstract The anorthosite of Sripuram is a syn - to late - tectonic concordant intrusive into the rocks of Khammam Schist Belt (KSB). Its major element Chemistry is comparable to Archaean anorthosites.

APA, Harvard, Vancouver, ISO, and other styles

40

Samuel, Ayodele Olusiji, and AsubiojoFola Emmanuel. "Mineralization Characterization of Psammitic Rocks in Efon-Alaaye and Environs using Remote Sensing and Field Studies." Asian Review of Environmental and Earth Sciences 8, no. 1 (2021): 48–61. http://dx.doi.org/10.20448/journal.506.2021.81.48.61.

Full text

Abstract:

This paper analyses remotely sensed data over a part of the Psammitic Rocks in Efon-Alaaye and Environs to elucidate its geology and structural framework as well as delineate the potential zones of mineralization. The study area belongs to the Precambrian Basement Complex terrain of Southwestern Nigeria and lies within the eastern unit of the Ilesha schist belt. The lithologic units comprise schistose quartzites, quartz schists, quartz-mica-schists, and granitic gneisses. Landsat 8 satellite imagery and Shuttle Radar Topography Mission imagery (SRTM), both of path 190 and row 055, were used fo

APA, Harvard, Vancouver, ISO, and other styles

41

Artemenko, G. V., L. V. Shumlyanskyy, D. Chew, F. Drakou, and O. M. Dudik. "THE AGE OF SEDIMENTARY-VOLCANOGENIC ROCKS OF THE CHORTOMLYK IRON DEPOSIT, THE MIDDLE DNIPRO DOMAIN OF THE UKRAINIAN SHIELD." Mineralogical Journal 46, no. 2 (2024): 74–84. http://dx.doi.org/10.15407/mineraljournal.46.02.074.

Full text

Abstract:

The greenstone belts in the Middle Dnipro Domain of the Ukrainian Shield comprise sedimentary-volcanogenic rocks of the Konka and Bilozerka Groups separated by a unconformity. The Konka Group is composed mainly of volcanic rocks varying in composition from ultrabasic to felsic composition with subordinate sedimentary rocks, while the Bilozerka Group is composed of sedimentary rocks with a small amount of felsic volcanic rocks. Three associations of ferruginous-siliceous rocks have been identified in the greenstone rocks of the Middle Dnipro Domain. These are the ferruginous-siliceous-mafic and

APA, Harvard, Vancouver, ISO, and other styles

42

Shumlyanskyy, Leonid. "The age of sedimentary-volcanogenic rocks of the Chortomlyk iron deposit, the Middle Dnipro Domain of the Ukrainian Shield." Mineralogical Journal (Ukraine) 46, no. 2 (2024): 74–84. https://doi.org/10.15407/mineraljournal.46.02.074.

Full text

Abstract:

The greenstone belts in the Middle Dniprо Domain of the Ukrainian Shield comprise sedimentary-volcanogenic rocks of the Konka and Bilozerka Groups separated by an unconformity. The Konka Group is composed mainly of volcanic rocks varying in composition from ultrabasic to felsic composition with subordinate sedimentary rocks, while the Bilozerka Group is composed of sedimentary rocks with a small amount of felsic volcanic rocks. Three associations of ferruginous-siliceous rocks have been identified in the greenstone rocks of the Middle Dniprо Domain. These are the ferruginous-siliceous-mafic an

APA, Harvard, Vancouver, ISO, and other styles

43

Alcântara, Davi da Costa Bezerra Gobira de, Alexandre Uhlein, Fabrício de Andrade Caxito, Ivo Dussin, and Antônio Carlos Pedrosa-Soares. "Stratigraphy, tectonics and detrital zircon U-Pb (LA-ICP-MS) geochronology of the Rio Preto Belt and northern Paramirim corridor, NE, Brazil." Brazilian Journal of Geology 47, no. 2 (2017): 261–73. http://dx.doi.org/10.1590/2317-4889201720160102.

Full text

Abstract:

ABSTRACT: Two important Proterozoic metasedimentary sequences, the Rio Preto and Santo Onofre Groups, crop out along the northwestern margin of the São Francisco craton and in northern Paramirim corridor, respectively. The Rio Preto Group, involved in the eponymous fold-thrust belt along the northwestern cratonic boundary, comprises the Formosa (garnet schist, quartz-mica schist, quartzite, chlorite-sericite schist and ferriferous quartz schist) and Canabravinha (quartzite, micaceous quartzite, metarhytmite, phylite, schist and metaturbidite) formations. The Santo Onofre Group occurs exclusive

APA, Harvard, Vancouver, ISO, and other styles

44

Koti Reddy, B. B., K. N. Reddy, and N. Desikan. "New Find of Tungsten Mineralisation Near Balepalyam and other areas of Ramagiri-Penakacherla Schist Belt, Anantapur Dist, A.P." Journal Geological Society of India 41, no. 6 (1993): 519–22. http://dx.doi.org/10.17491/jgsi/1993/410605.

Full text

Abstract:

Abstract Promising zones of tungsten are reported for the first time in Ramagiri-Penakacherla schist hell at Atmahru, Balepalyam and Penukonda areas. The mineralisation occurs as disseminations, tringers and fracture fillings of scheelite. Fourteen scheelite bearing quartz-pegnlatite veins have been delineated in Balepalyam block. WO3 values range from 10 ppm to 5.86%. The association of other clrments like tin, antimony, arsenic, gold and bismuth suggest a possible minerological zoning and multimetal prospects in the schist belt.

APA, Harvard, Vancouver, ISO, and other styles

45

Ibrahim, A. A. "Ferruginised metapelites of the Kazaure Schist belt, northwestern Nigeria." Nigerian Journal of Basic and Applied Sciences 26, no. 1 (2019): 106. http://dx.doi.org/10.4314/njbas.v26i1.12.

Full text

APA, Harvard, Vancouver, ISO, and other styles

46

SubbaRao, K. V., M. J. Le Bas, and B. Bhaskar Rao. "Are the Vinjamur Rocks Carbonatites or Meta-Limestones?" Journal Geological Society of India 46, no. 2 (1995): 125–37. http://dx.doi.org/10.17491/jgsi/1995/460203.

Full text

Abstract:

Abstract New whole-rock rare earth element (REE) data for the metacarbonate rocks interbedded with schists at Vinjamur in the Nellore Schist Belt of Andhra Pradesh, show low total REE contents (S9-128 ppm) that are inconsistent with an igneous carbonatitic origin but which correspond more closely with a sedimentary limestone origin. The REE data of these rocks however, do not give absolute discrimination between marbles of meta-limestone and metacarbonatite origin. Micro-probe analytical data give better discrimination, and the chemical compositions of the calcite, micas, amphibole, plagioclas

APA, Harvard, Vancouver, ISO, and other styles

47

Laajoki, Kauko, and T. C. Devaraju. "Fe-Chlerite, Grunerite, Stilpnomelane, Ankerite and Siderite Occurrence in the Iron-Formation of Chiknayakanhalli Schist Belt, Karnataka." Journal Geological Society of India 33, no. 2 (1989): 175–82. http://dx.doi.org/10.17491/jgsi/1989/330207.

Full text

Abstract:

Abstract Electron probe microanalytical data is given for Fe-chlorite (31% FeO) and grunerite (31.4% FeO) occurring in the mixed oxide-silicate facies iron-formation and for ankerite (av. 17.5% FeO), siderite (av. 44,2% FeO) and stilpnomelane (31.6% FeO, 5.9% Al2O3, 2% K2O) in the carbonate iron-formation of Chiknayakanhalli Schist belt. While Fe-rich chlorite, ankerite and siderite appear to represent recrystallized diagenetic and primary sedimentary phases of the same minerals, grunerite has formed from metamorphic alteration of minnesotaite and stilpnomelane from a montmorillonite (nontroni

APA, Harvard, Vancouver, ISO, and other styles

48

V.V., Sesha Sai, Mrunalini V. Khond, and Namrata Mahanata. "Madhavaram metavolcanic belt, Southern India: spatial continuity of Neoarchean Raichur–Gadwal schist belt, Eastern Dharwar Craton." Journal of Geointerface 4, no. 1 (2025): 56–67. https://doi.org/10.5281/zenodo.15541372.

Full text

Abstract:

Through detailed field and laboratory studies involving geological mapping, petrographic, geochemical and mineral chemistry studies, a metavolcanic belt comprising of basalt–basaltic andesite–andesite is reported from the Precambrian granitic terrain at Madhavaram area in southern India. The WNW-ESE trending Madhavaram metavolcanic belt is located along the southern extension of Raichur schist belt of Eastern Dharwar Craton. Field studies reveal that the major foliation recorded in the area is WNW-ESE to NW-SE trending with moderate to steep NE dips. Petrographically the andesite i

APA, Harvard, Vancouver, ISO, and other styles

49

Okpoli, Cyril C., Sunday O. Idakwo, Oladele Olaniyan, and Promise E. Chidi. "Geotectonics and Exploration of Gold Mineralization in the Kushaka-Kusheriki Schist Belt North-Central Nigeria." Indonesian Journal of Earth Sciences 5, no. 1 (2025): A1250. https://doi.org/10.52562/injoes.2025.1250.

Full text

Abstract:

The lack of systematic and organized development and exploration for gold and increasing demand for sustainable development goals has prompted the integrated geological, geophysical and geochemical surveys to characterize the gold mineralization at Owu part of the Kushaka-Kusheriki schist belt in North Central Nigeria. Previous studies concentrated on geology and geochemical studies with no emphasis on the use of integrated studies and state-of-the-art tools aimed at characterizing gold mineralization. Detailed geological mapping was carried out to determine the various rock types and their st

APA, Harvard, Vancouver, ISO, and other styles

50

Mishra, Meenal, and V. Rajamani. "Significance of the Archaean Bimodal Volcanics from the Ramagiri-Schist Belt in the Formation of Eastern Dharwar Craton." Journal Geological Society of India 54, no. 6 (1999): 563–83. http://dx.doi.org/10.17491/jgsi/1999/540601.

Full text

Abstract:

Abstract The central arm of the trident shaped Ramagiri schist belt includes a central block which consists predominantly of bimodal (mafic-felsic) volcanics, apart from minor metasedimentary units. The geological set up of the various rock types suggests that the central block could be a tectonic melange. The metatholeiites and the felsic volcanics of the central block show similar LREE - enriched and fractionated REE patterns; the metatholeiites however. show a much larger variation in abundances. It has been suggested that the protoliths to the Ramagiri central mafic suite of bimodal volcan

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!