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Tuesday, August 4, 2020 | History

3 edition of Geodynamic evolution of the Pan-African lower crust in Sri Lanka found in the catalog.

Geodynamic evolution of the Pan-African lower crust in Sri Lanka

Leo Kriegsman

Geodynamic evolution of the Pan-African lower crust in Sri Lanka

structural and petrological investigations into a high-grade gneiss terrain

by Leo Kriegsman

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  • 6 Currently reading

Published by Faculteit Aardwetenschappen der Universiteit Utrecht in [Utrecht .
Written in English

    Places:
  • Earth,
  • Sri Lanka.
    • Subjects:
    • Gneiss -- Sri Lanka.,
    • Geology, Structural -- Sri Lanka.,
    • Petrology -- Sri Lanka.,
    • Earth -- Crust.

    • Edition Notes

      Other titlesGeodynamische ontwikkeling van de Panafrikaanse onderkorst in Sri Lanka
      StatementLeo Kriegsman.
      SeriesGeologica Ultraiectina,, no. 114
      Classifications
      LC ClassificationsQE1 .G1342 no. 114
      The Physical Object
      Pagination208 p. :
      Number of Pages208
      ID Numbers
      Open LibraryOL464196M
      ISBN 109071577686
      LC Control Number98183897
      OCLC/WorldCa29903292

      For contemporary conditions, geodynamic modelling of collisional orogenesis shows that slab break-off occurs at depths > km in all experiments: strong lower crust results in coupled collision with UHP metamorphism, whereas weak lower crust results in decoupled collision with . Secondary siderite-oxide-sulphide and carbonate-andalusite assemblages in cordierite granulites from Sri Lanka: Post- granulite facies fluid evolution during uplift. Contributions to Mineralogy and Petrology, , Griffin, W.L., Zhang, A., O’Reilly, S.Y. and Ryan, C.G. Phanerozoic evolution of the lithosphere beneath the.

      National Centre for Earth Science Studies (Ministry of Earth Sciences, Government of southern India: a possible magmatic-arc link between India, Sri Lanka, and Madagascar. Hawkesworth, C.J. and Santosh, M., New isotopic constraints on the crustal evolution of South India and Pan-African granulite metamorphism. Geol. Soc. Ind. Mem. COMPOSITIONAL CHARACTERISTICS AND FUNCTIONAL APPLICATIONS OF OBAJANA MARBLE DEPOSIT IN THE PRECAMBRIAN BASEMENT COMPLEX OF CENTRAL NIGERIA 1 A. A., 1 A. O. and 2 O. K. 1Department of Geology, University of Ibadan, Ibadan, Nigeria 2Department of Geological Sciences, Osun State University, P.M.B. , Osogbo, NigeriaAuthor: AA Elueze, AO Jimoh, OK Aromolaran.

      The tectono-metallogenic evolution of the Arabian Shield Agar, Aguirre Luis see Affaton, Pascal Aguirre, Ahall Karl-Inge, Persson, Per-Olof and Skiold, Torbjorn Westward accretion of the Baltic Shield; imAhall, plications from the Ga Amal-Horred Belt, SW Sweden Ahall Karl-Inge, Cornell, D. H. and Armstrong, R. Ion probe zircon dating of. The Ross orogen of Antarctica is one of Earth's great Phanerozoic mountain belts. It is thought from igneous geochemistry, deformation patterns, and sedimentation history to be the result of late Neoproterozoic and early Paleozoic plate-margin convergence between paleo-Pacific oceanic lithosphere and continental lithosphere represented by the composite East Antarctic shield.


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Geodynamic evolution of the Pan-African lower crust in Sri Lanka by Leo Kriegsman Download PDF EPUB FB2

Versity of Peradeniya, Sri Lanka. in detail the geodynamic evolution of the Pan-African lower crust in Sri Lanka and compared the geology of Sri Lanka, South India, East Africa, and Madagascar.

The positionofSriLankainGond-wana, though enigmatic, has evoked great interest in view of the island’s remarkable geology and min-Cited by: Sri Lanka-Madagascar Gondwana Linkage: Evidence for a Pan-African Mineral Belt in detail the geodynamic evolution of the.

Pan-African lower crust in Sri Lanka and compared. Get this from a library. Geodynamic evolution of East Antarctica: a key to the East-West Gondwana connection.

[M Satish-Kumar; Geological Society of London.;] -- Geological correlations of East Antarctica with adjoining continents have been puzzling geologists ever since the concept of a Gondwana supercontinent surfaced.

Geodynamic evolution of the Pan-African lower crust in Sri Lanka book This volume presents reviews and new. \/ Joachim Jacobs, Bernard Bingen, Robert J. Thomas, Wilfried Bauer, Michael T. Wingate and Paulino Feitio -- Terrane correlation between Antarctica, Mozambique and Sri Lanka; comparisons of geochronology, lithology, structure and metamorphism and possible implications for the geology of southern Africa and Antarctica \/ G.

Grantham, P. Structural analysis in the Kadugannawa Complex (KC) in central Sri Lanka reveals the presence of an early, steep gneissic layering, S 1, which has been overprinted by a younger event, D 2, in the structurally deepest levels.D 2 folds become progressively tighter towards the contact with the underlying Highland Complex (HC).

The distribution of lithologies in the KC, the distribution of steep S Cited by: Terranes adjacent to DML, such as Madagascar, Sri Lanka and South India, show a very similar evolution to the one observed in DML (Milisenda et al., ;Baur et al., ;Hiroi et al, ;Hö.

The Pan‐African structural domain with low‐angle thrusts and ophiolite mélanges extends at least as far W as the River Nile, where the ancient margin of the African craton may be found.

The entire domain farther E is characterized by newly accreted magmatic associations of late Precambrian age that may have evolved in settings similar to Cited by:   The Pan-African orogenic belt of Hoggar, km wide, represents an extremely tightened complex and composite mobile zone.

In the western part, the earlier thick meta-sedimentary units and alkaline-peralkaline intrusives, both of middle Proterozoic age, account for the early mobility of a N-S trending ensialic domain.

Later, large scale upper-mantle contribution was responsible for many Cited by: The rocks show regional metamorphism with pressures of 6 to 11 k bars and temperatures of to oC. The Dharwar Craton (DC) is bounded to the South by the E-W trending Moyar-Bhavani shear zone, where the lower continental crust is extensively reactivated during the.

Our current understanding of the tectonic history of the principal Pan-African orogenic belts in southwestern Africa, reaching from the West Congo Belt in the north to the Lufilian/Zambezi, Kaoko, Damara, Gariep and finally the Saldania Belt in the south, is briefly summarized.

On that basis, possible links with tectono-stratigraphic units and major structures on the eastern side of the Río Cited by: comprehensive book overviewing the geology of Antarctica – some parts are now out of date in the light of recent data, but in all this book is still a very good introduction to Antarctica.] Vaughan, APM & Storey, BC, ().

Mesozoic geodynamic evolution of the Antarctic Peninsula. Kriegsman, L.M., Structural and petrological investigations into the Sri Lankan high-grade terrain-geodynamic evolution and setting of a Gondwana fragment. Geol. Ultraiectina,pp. Kriegsman, L.M., Evidence for a fold nappe in the high-grade basement of central Sri Lanka: terrane assembly in Pan-African lower crust?Cited by: The study area is located across the Kalahari Craton – Maud Belt boundary in Dronning Maud Land (DML), Antarctica.

The ∼ Ma Maud Belt in the east is situated where the ∼– Ma East African and ∼– Ma Kuunga orogenies overlap. Structural evolution. The Pan-African orogenic event, which gave the Lufilian belt its present northward convex configuration, has been studied for a very long time.

Amongst the numerous models of evolution proposed for the belt and its foreland deposits, the File Size: 37MB. The Pan-African orogeny was a series of major Neoproterozoic orogenic events which related to the formation of the supercontinents Gondwana and Pannotia about million years ago.

This orogeny is also known as the Pan-Gondwanan or Saldanian Orogeny. The Pan-African orogeny and the Grenville orogeny are the largest known systems of orogenies on Earth.

The sum of the continental crust. Madagascar, Sri Lanka and southern India were profoundly affected by high-grade Pan-African metamorphism and deformation associated with Gondwana assembly, but interestingly, the ~ Ma arc-related rocks of the Seychelles and Rajasthan seem to have largely escaped these : Alexander L.

Du Toit, L.D. Ashwal. Greece contains several gem corundum deposits set within diverse geological settings, mostly within the Rhodope (Xanthi and Drama areas) and Attico-Cycladic (Naxos and Ikaria islands) tectono-metamorphic units.

In the Xanthi area, the sapphire (pink, blue to purple) deposits are stratiform, occurring within marble layers alternating with by: 6. The main findings are that (1) crustal structure is similar beneath the CVL and the Oubanguides Belt to the south of the CVL, (2) the crust is thicker under the Congo Craton than the Oubanguides Belt and is characterized by shear wave velocities ≥ km s −1 in the lower part of the crust, 3) the crust is thinner beneath the Garoua rift and Cited by: Structural and geochronological constraints on the Pan-African tectonic evolution of the northern Damara Belt, Namibia JérémieLehmann1,2,KerstinSaalmann1,3,ov1,4,LorenzoMilani1,in2, Horst Zwingmann5,6, Guy Charlesworth1, and Judith A.

Kinnaird1 1EGRI, School of Geosciences, Cited by: Structure and Tectonics of the Indian Continental Crust and Its Adjoining Region: Deep Seismic Studies, Second Edition,collates essential data from seismic studies of Earth's crust across India, offering an essential understanding of the tectonic development of the Indian c studies have been carried out in various parts of India sincerecording crust-related seismic.

Pan-African Orogeny Introduction The term ‘Pan-African’ was coined byWQKennedy in on the basis of an assessment of available Rb–Sr and K–Ar ages in Africa. The Pan-African was interpreted as a tectono-thermal event, some Ma ago, during which a number of mobile belts formed, surrounding older concept was then extended to the Gondwana continents (Figure 1) although.Unfortunately, this book can't be printed from the OpenBook.

If you need to print pages from this book, we recommend downloading it as a PDF. Visit to get more information about this book, to buy it in print, or to download it as a free PDF.The upper and lower crust which are separated by the Conrad discontinuity (the velocity changes from to km/s here) show very little lateral heterogeneity.

The P-wave velocity in the upper mantle was modelled to be km/s and thus can be distinguished from that in the southern Kenya Rift, where a velocity of km/s was observed.