Stratigraphic
Variations within the Sego Sandstone, Book Cliffs,
Willis, Brian J.1, Matthew Fey1,
Eric Robinson1,
Interpretations of the Sego Sandstone,
one of the classic outcrop analogs for tide-influenced reservoir deposits,
remain controversial because: complex internal facies variations have been
mapped in detail only along specific limited segments of this huge outcrop
belt; sequence stratigraphic interpretations have evolved to recognize the
importance of sea floor erosion during falling-stage regression; and numerous
field trip parties have assessed stratigraphic relationships based on local
field stops out of context of a clear regional stratigraphic framework. This
poster presents detailed cross-sections of facies and stratigraphic surfaces
across two additional segments of this outcrop belt. A cross section of the
upper Sego Sandstone spanning the 20 km segment between Horse and
AAPG Search and Discover Article #90063©2007 AAPG Annual Convention, Long Beach, California