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The Structural And Metamorphic History Of The Oakhurst Roof Pendant, Mariposa And Madera Counties, California, Lee R. Russell
The Structural And Metamorphic History Of The Oakhurst Roof Pendant, Mariposa And Madera Counties, California, Lee R. Russell
UNLV Theses, Dissertations, Professional Papers, and Capstones
The Oakhurst roof pendant, near Oakhurst, California, consists of three pre-Cretaceous clastic metasedimentary rock units, surrounded and intruded by rocks of the Sierra Nevada batholith. Two zones of probable "sheared granitic" and "ultramafic" rocks trend northwesterly and are approximately aligned with the Foothills fault system farther north.
The dominant mesocopic feature of the pendant is a northwesterly striking foliation which forms a downward converging fan. Earlier-formed hornblende lineations have been transposed into this foliation plane, as shown by Schmidt-net projections.
Rocks comprising the three unites show three textural stages:
1) Early amphiboles and diopside overgrown by later static amphibole pophyroblasts. …