CHRISTMAS MOUNTAINS GET A VISIT
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The Chris tmas Mountains are a small range next to Big Bend National Park. The 9,270 acre tract is owned by the TSUS and is open to the public and to academic researchers. It is characterized largely by marine sedimentary rocks of Cretaceous age that have been intruded by much younger (40 to 44 million years) igneous rocks forming a complex caldera system. The area supports a desert grassland ecosystem comprising several distinctive plant community types. The symposium included presentations and field trips to view the geology, ecology and history of the property. Photo: Dr. Liz Measures, a professor of geology at Sul Ross State University, points out the features of the Christmas Mountains on a field trip at the Christmas Mountains Symposium.