lgc field course in the book cliffs, ut: presentation 5 of 14 (gentile wash - storrs & spring...
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William W. Little© 2015 by W.W. Little Geological Consulting, LLC
Gentile Wash: Storrs & Spring Canyon Mbrs
(TST to HST – offshore marine to coastal plain)
Photo by W. W. Little
Shoreface Facies Model
From SEPM Strata (sepmstrata.org)
Jolley (2015)
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Panther Tongue
Storrs Member
STAR
PO
INT
SAN
DSTO
NE
BLAC
KHAW
K FO
RMAT
ION
Sprin
g Ca
nyon
Mbr
Wildcat PS
Sowbelly PS
Hardscrabble PS
Heiner & Helper PSs
Aberdeen Mbr
Photo by W. W. Little
DSC07006 Photo by W. W. Little
Storrs Mbr (3 retrogradational to aggradational parasequences)
The lower parasequence consists of: laminated ms (offshore) -> interbedded laminated ms and hummocky-laminated ss (transition zone) -> hummocky-laminated ss (lower shoreface). Overlying parasequences become progressively more dominated by more distal facies.
Photo by W. W. Little
Lower Storrs Parasequence
Photo by W. W. Little
Photo by W. W. Little
Hummocky-laminated SS (lower shoreface)
Photo by W. W. Little
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Trough Cross-bedded to Horizontally-laminated SS (upper shoreface to
foreshore)
Photo by W. W. Little
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Ophiomorpha Burrows
Photos by W. W. Little
Upper Storrs Parasequence
Photo by W. W. Little
Horizontally-laminated MS (offshore)
Photo by W. W. Little
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Each parasequence consists of: laminated ms (offshore) -> interbedded laminated ms and hummocky-laminated ss (transition zone) -> hummocky-laminated ss (lower shoreface)
Spring Canyon Mbr (5 parasequences)
Photo by W. W. Little
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Sprin
g Ca
nyon
Mbr
Stor
rs M
br
Helper PS
Sowbelly PS
Hardscrabble PS
Heiner PS
Wildcat PS
MFS
Photo by W. W. Little
Sowbelly Parasequence
Photo by W. W. Little
Interbedded Horizontally-
laminated MS and Hummocky-laminated
SS (transition zone)
Photo by W. W. Little
Hummocky-laminated SS
Photo by W. W. Little
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Trough Cross- to Horizontally-laminated SS
Photo by W. W. Little
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Trough Cross-laminated SS
Photo by W. W. Little
DSC07075 Photo by W. W. Little
Photo by W. W. Little
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Contorted SS
Photo by W. W. Little
Photo by W. W. Little
DSC07078 Photo by W. W. Little
Panther Tongue
Mancos Sh
Storrs Mbr
Wildcat PS
Sowbelly PS
Hardscrabble PSHeiner PSHelper PSAberdeen MbrBlackhawk Fm undif.
TS
SB
MFS
One Last Look
Photo by W. W. Little
Photo by W. W. Little