Abstract
Grenville-aged orogenesis along the southern margin of Laurentia as recorded in the Llano uplift of central Texas includes extensive plutonism, regional polydeformation, and dynamothermal and static metamorphism that occurred from 1.32 to 1.07 Ga. Multidisciplinary geologic studies in the southeastern Llano uplift have delineated the following tectonic domains: a polydeformed, highly transposed supracrustal sequence (Packsaddle domain) that is situated between a lesser deformed tonalitic to dioritic island arc terrane (Coal Creek domain) and a polydeformed granitic gneiss terrane (Valley Spring domain).
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References
Walker, N. (1992) Middle Proterozoic geologic evolution ot Llano uplift, Texas: Evidence from U-Pb zircon geochronometry, Geological Society of America Bulletin 104, 494–504.
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© 1998 Springer Science+Business Media Dordrecht
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Mosher, S., Roback, R.C., Reese, J.F. (1998). Evolution of Grenville Tectonic Provinces, Southeastern Llano Uplift, Central Texas. In: Hogan, J.P., Gilbert, M.C. (eds) Basement Tectonics 12. Proceedings of the International Conferences on Basement Tectonics, vol 6. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-5098-9_38
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DOI: https://doi.org/10.1007/978-94-011-5098-9_38
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