Depart Friday March 25, 2016 at 1 PM - meet at department

Saturday March 26 - Llano region

Sunday March 27 - return to Houston, arriving in the evening


What to bring: hat, walking or hiking shoes, hammer (if you have one), hand lens, sun screen, water bottle, NOTEBOOK




Generalized geologic maps

Simplified geologic map of Llano Uplift

Detailed geologic map of Llano Uplift (Barnes, 1981)

Pedernales Falls Geologic Map


Geologic overviews

Barnes, V. E., 1988. The Precambrian of Central Texas, GSA Centennial Field Guide.

McGehee, R. V., 1979. Precambrian rocks of the southeastern Llano region, Texas.

Mosher, 1998, Tectonic evolution of the southern Laurentian Grenville orogenic belt, GSA Bulletin 110:1357-1375.

Mosher, Levine, Carlson, 2008, Mesoproterozoic plate tectonics: a collisional model for the Grenville-aged orogenic belt in the Llano uplift, central Texas, 36:55-58.

Mosher, S. et al. 2008, The Texas Grenville orogen, Llano Uplift, Texas, Field trip guide to the Precambrian geology of the llano uplift

Reese, Mosher, Connelly, Roback, 2000, Mesoproterozoic chronostratigraphy of the southeastern Llano uplift, central Texas, GSA Bulletin 112:278:291


Granitic plutons of Central Texas

Barker and Reed. 2010. Proterozoic granites of the Llano Uplift, Texas: a collision-related suite containing rapakivi and topaz granites. GSA Bulletin 122:253-254.

Smith, Barnes, Shannon, Roback, James, 1997, Petrogenesis of Mid-Proterozoic granitic magmas: examples from central and west Texas, Precambrian Research 85: 53-79.


Precambrian metamorphic rocks

Nelis, Mosher, Carlson, 1989, Grenville-age orogeny in the Llano Uplift of central Texas: deformation and mmetamorphism of the Rough Ridge Formation, GSA Bulletin 101:876-883.




Garrison, J. R., 1981, Coal Creek serpentinite, Llano Uplift, Texas: A fragment of an incomplete Precambrian ophiolite, Geology 9:225-230.