Pollen and Spores from the Type Section of the Middle Eocene Stone City Formation, Burleson County, Texas
JONES, JOHN G., and JUDITH A. GENNETT, Texas A&M University, College Station, TX
The middle Claiborne Stone City Formation (middle Eocene) represents environments transitional between fresh water and marine. No substantial differences exist in the pollen and spore content from the bottom to the top of the formation. The most common pollen grain is the small chestnut-like tricolporate, Cupuliferoipollenites. Two other similar pollen types, Siltaria sp. and Araliaceoipollenites granulatus are also common. These taxa are typical of Claiborne-age sediments. Other taxa, notably Nuxpollenites, are found only in the middle Eocene. The few changes that occur within the vertical sample sequence differentiate the lower clastics from the finely sampled "glauconite bed." Several taxa, such as Ailanthipites berryi, are found only within this upper bed. Other pollen types, such as Rhoipites latus, are found only in the shales.
AAPG Search and Discovery Article #91006 © 1991 GCAGS and GC-SEPM Meeting, Houston, Texas, October 16-18, 1991 (2009)