Browsing by Author "Campbell, Donald Harvey"
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Campbell, Donald Harvey (Texas A&M University. Libraries, 1968)The Yucca Formation of Neocomian to Aptian age extends from the geosynclinal region of the Chihuahua Trough in Mexico, eastward to the Diablo Platform in Trans-Pecos Texas. At Quitman Gap, in the Quitman Mountains, the ...