Transactions of the Kansas Academy of Science, April 1st, 2001
INTRODUCTION
The Hills Pond lamproite is part of a sill complex intruded into the northern portion of the Silver City Dome (Fig. 1). This intrusion is related closely in age, composition, and tectonic setting to a nearby intrusion at Rose Dome (Berendsen and Blair, 1991). Rose Dome includes well-known xenoliths of granite derived from the deep crust. However, xenoliths of any type have never been reported before from the Hills Pond lamproite. The seeming lack of xenoliths at Silver City has been puzzling. The following summary is based mainly on Bickford, Wetherill, and Franks (1971); Frank...
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