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.delta that pushed t'ol'ft.rd into the shallow water, and

was p1'tQlonged by a rn1d-bas1n channel where thtt sw1tter

currents ot floods would dl"op their ooarse debris. Theae

Nlat1ona are ahown 1n Figure 5. Puckett ~esa thus would

occupy the mid-basin ahannelw'ly, and laoustr1ne sedlmenta

could be expected to occur both north and eouth or thta

zone.

· Figure 3 - Diagram. showing the auggeated
distribution ot laoustr1ne sediment•
within the Mint Canyon formation.

11'M d1sappea.nnoe ot' ln.ctlRtr1ne strA.ta to the

west 1s not aurpr1u1ng. It ts probable that the Mlnt

Canyon beds were depmd ted 1n a broad valley flanked b'7

great bajad.a su.rtaoea t.hat sloped gently upn:rd. toward

the bases ot high, rugged mountains·to the north and

south. During periods of' •u.t.tt~'-"'nt ralnt'all, An

tnteraequent streaa undoubtedly tlowed seaward betw••n