Beau Gentry and Brenna Quigley, both UCSB Earth Science graduate students, will each give a talk at Speakers Club this Thursday.  Beau's talk is entitled "Timing and Styles of Dike Emplacement in the SW Whipple Mountains, CA: Implications for the rotation of the footwall of the Whipple Detachment fault." Brenna's talk is entitled "Investigation of Controls for Gold Mineralization in the Rochford District, Black Hills, South Dakota."