Sue Peaks Formation

Sue Peaks Formation
State Texas
Name Sue Peaks Formation
Geologic age Early Cretaceous
Lithologic constituents
Major
Sedimentary > Carbonate > Limestone (Bed)
Sedimentary > Clastic > Mudstone > Shale (Bed)
Minor
Sedimentary > Carbonate > Marlstone (Bed)
Comments Sue Peaks Formation is gray aphanitic, microgranular, thin-bedded limestone and interbedded yell-gray shale Upper part is mostly ls., nodular, gray some interbedded shale; Lower part mostly shale, marly, some thin interbeds of ls. Occupies slope between escarpments of the overlying Santa Elena Ls and underlying Del Carmen Ls. Sue Peaks Ls is reported 45 ft thick on Del Rio Sheet.
References

Bureau of Economic Geology, 1977, Del Rio Sheet, Geologic Atlas of Texas, University of Texas, Bureau of Economic Geology, scale 1:250,000.

Bureau of Economic Geology, 1979, Emory Peak--Presidio Sheet, Geologic Atlas of Texas, University of Texas at Austin.

Bureau of Economic Geology, 1992, Geologic Map of Texas: University of Texas at Austin, Virgil E. Barnes, project supervisor, Hartmann, B.M. and Scranton, D.F., cartography, scale 1:500,000.

NGMDB product
Counties Brewster - Presidio