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but vaguely known. The extensive area ot olift"s and

badland exposures on the northern side of Puokett Mesa

enabled Jahns to recognize twenty-seven time subd1v1s1ona

within the formation. (l Some ot these aubd1v1s1ona

could be traced southward trom the mesa, but onlJ tor

ahort distances.

Computations made in an area of hom.ool1nal
dip between Mint Cat17on and Soledad C~nyon show tbat at

least 1.600 teet or Kint Canyon strata are present there.
A oomparable reeult waa obtained trom measurements along

the northern border ot the map through another homoal1nal
seot1on. These oolumns cannot be oorrelated with

assurance, nor oan they be matohed with beds exposed in
the extreme northeastern corner or th-e map. However,

1t 1s thought that the last named beds are older. and
that the true thlolmeas of Mint Oanyon beds exposed
. .
within the area mapped is not less than 2.000 feet.

The top ot this oolumn 1s the approxbaate
2
equivalent or the top of Jahns' oolumn, < and the

bottom 11•• near his Member 10. The eatiaate ot

th1cknes• stated above ie nearly equal to his measured

oolumn between these two points.

(1 - R.H. Jahns, Oarnegie Institution ot Washington,
Publioat1on No. 514. Paper IX, pp 145-194, 1940.

(2 - R.H. Jahns, op. o1t.