lgc field course in the book cliffs, ut: presentation 5 of 14 (gentile wash - storrs & spring...
TRANSCRIPT
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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
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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
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DSC07006 Photo by W. W. Little
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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
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Lower Storrs Parasequence
Photo by W. W. Little
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Photo by W. W. Little
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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
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Upper Storrs Parasequence
Photo by W. W. Little
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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
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Sowbelly Parasequence
Photo by W. W. Little
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Interbedded Horizontally-
laminated MS and Hummocky-laminated
SS (transition zone)
Photo by W. W. Little
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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
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DSC07075 Photo by W. W. Little
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Photo by W. W. Little
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Contorted SS
Photo by W. W. Little
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Photo by W. W. Little
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DSC07078 Photo by W. W. Little
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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
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Photo by W. W. Little