Dear Colleagues:
Gondwana 14 meeting which will be held September 25th-30th, 2011, in the coastal city of Armação de Búzios in Brazil.
We invite you to the Session 5, entitled: "GONDWANA SHEAR ZONES AND SUTURES: HISTORIES OF THE AMALGAMATION OF A SUPERCONTINENT AND INHERITANCE ON CONTINENTAL DEFORMATION", Conveners: Roberto D. Martino (Argentina), Graciela I. Vujovich (Argentina) and Marcos Egydio Silva (Brazil).
Large shear zones systems, from hundreds to thousands of kilometers, occur in all Mesoproterozoic and Neoproterozoic orogens from Gondwana. Some good examples are: the Sobral-Kandi-Transbrasiliano lineament and the Trans-Africa, Central Africa, Nadj, Narmada-Son shear zones. These shear zones are products of the amalgamation of a group of continental blocks, with distinct histories and characteristics. Some are parallel to the orogenic belts and other define and contour the cratonic blocks, that vary from weak to strongly deformed. The displacement could have hundreds of kilometers, with fault rocks developing in even more than one kilometer of thickness, and presents either vertical or horizontal movement components. These shear zones are usually not well understood but are significant for the kinematic analysis of Gondwana assembly, inheritance and heterogeneities that are produced during reactivation of younger orogens or extension and dispersion of continents. In addition, the low preservation of ophiolitic lenses in these deeply eroded Proterozoic orogens, difficult their recognition, and also the presence of upper mantle sheets associated with some shear zones, are very good motives for a discussion about shear zones and sutures in this Gondwana Conference.
There are a variety of other great sessions and trips that accompany this session that you might also be interested in - for details see the Gondwana 14 web sitehttp://www.gondwana14.org/index.php .
The deadline for abstract submissions is 30th of April 2011. Registration for the conference and the field trips is now open.
According to the website Búzios is: “a cozy and charming resort in the eastern coastal region of Rio de Janeiro State Brazil. Sixteen beautiful beaches compose the sightseeing with amazing outcrops of Cambrian gneisses that register the latest orogeny related to Gondwana amalgamation. In addition, tholeiitic diabase dykes associated with Mesozoic-Cenozoic faults complete the history of Gondwana break up and development of the South Atlantic margins. Mild temperatures and dry weather in the end of September configure the beginning of spring, with flowers and fruits all over”.
For details of schedules, registration fees, field trips, and all logistics please seehttp://www.gondwana14.org/index.php . Please follow the procedures for abstract submission, registration and field trip participation as indicated on the website.
The scientific committee is chaired by Rudolph Trouw [log in to unmask] and Renata Schmitt [log in to unmask]
Also, please pass this email on to any colleagues that you think might be interested.
Thank you for your attention.
Sincerely,
Roberto D. Martino
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Prof. Dr. Roberto Donato Martino
Cátedra de Geología Tectónica
F.C.E.F. y N.
Universidad Nacional de Córdoba
Pabellón de Geología
Oficina 6 - 2° Piso
Av. Vélez Sarsfield 1611
Ciudad Universitaria
X 5016 GCA - Córdoba
República Argentina
Voice: 54-351-4344980 - Ext. 115
Fax: 54-351-4334139
e-mail: [log in to unmask]
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