Robert G. Loucks
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Volcanic Origin and Significance of Glauconite Grains in the Upper Cretaceous Austin Chalk Formation in the Balcones Igneous Province, South and Central Texas Open
Abundant glauconite grains occur in the upper Austin Chalk A and B1 units within the confines of the Balcones Igneous Province (BIP) in the area of the Maverick Basin and San Marcos Arch in Central to South Texas. Controversy exists as to …