Conglomerate of Laughlin
conglomerate of Laughlin on Miocene fanglomerate
paleochannel in Miocene fanglomerate filled with lower Bullhead alluvium.
Lower part of Bullhead--the gravel of panda gulch
Tcb: Panda gravel with very obvious Newberry gravel component
lower Nomlaki tephra layer ~4.0 Ma
Classic paleochannel in Newberry gravels.
big boulder in Pyramid gravel. Note poorly sorted paraconglomerate in overlying stratum.
Type section of the transitional beds that mark the role of catastrophic flooding followed by lacustrine depostion in the inception of the lower Colorado River.
Largest boulder in the Pyamid gravel.
first view of mud on mud unconformity in Chemehuevi sediments in 2000
Laughlin conglomerate near Davis Dam
at least 2 internal Chemehuevi unconformities in this gulch
complicated stratigraphy at face of Chemehuevi terrace...stay tuned for annotated version
The'Big gully' Chemehuevi outcrop. Some small-scale discontinuities and an otc (outcrop) of old fan gravel with skiff of old river gravel near mouth
interstratified mud, sand, and minor gravel; Chemehuevi sediments
Arizona gulch section; Mohave terrace
Arizona gulch section
obvious unconf in Arizona gulch section
view up Arizona gulch--bluff-forming unit is piedmont gravel from the Black Mountains in Arizona.
Lower Bullhead (Panda gravel) on grussy and poorly sorted bed of Pyramid gravel; Arizona gulch
Large bedload boulder (with mano?) in Arizona gulch; can't decide if in Pyramid gravel or lower Bullhead
Arizona gulch stratigraphy below surface of Mohave terrace. Forgot to label the river sand (Qcs) below each layer of river mud (Qcm). Qfaz is piedmont gravel from Black Mountains in Arizona.
CR sands intbd with Newberry Fans near Unnamed wash.
Chemehuevi on paleosol and topo formed in Laughlin conglomerate and overlying gravel
Chemehuevi on paleosol on Laughlin conglomerate
Chemeheuvi on paleosol on Laughlin conglomerate
petrified wood in Chemehuevi
Chemehuevi on paleosol and topography on Laughlin conglomerate
Chemehuevi on topo formed in Laughlin conglomerate. Strong soil present locally at the contact and evident in the left side of photo.
It may be that the Laughlin Conglomerate overlies the Bouse here and to the north. Opens up possibility that there are more than one strata within what has been mapped as Laughlin conglomerate. One may be related to the Bullhead.
Laughlin conglomerate over mud
The Sand fang.
big mudball in the sand fang.
small paleochannels in the Chemehuevi below the sand fang
strata below the sand fang
The Davis Dam bluffs
Chemehuevi otcs just west of Davis Dam
rhythmically bedded sand and mud in Davis Dam bluffs slightly north of the mud-on-mud
Chemehuevi onlapping an older sequence that contains the Laughlin Conglomerate.
The older sequence mentioned in the previous photo...lower strata include fan gravels from Pyramid hills overlain by thin Colorado River sand and gravel, overlain by the Laughlin conglomerate.
Chemehuevi onlapping older fine-grained deposits that underlie the Laughlin conglomerate.
Likely basal gravel of the Chemehuevi exposed in the 'breadloaf' outboard of the Davis Dam bluffs.
old roadcut showing interstratified mud, sand, and river gravel in Chemehuevi seds. Field book for scale.
Classic Panda gravel outcrop in Arizona gulch.
Prominent gravel bed overlain by finer-grained facies in the Chemehuevi.
Homeless encampment in the Big gully that cuts the Davis Dam bluffs.
Boulder below the Sand fang
Strath on Laughlin conglomerate
View toward Laughlin cong. on green mud outcrop
Petrified ball of sticks in Chemehuevi
Petrified wood abounds in this horizon
Remains of homeless camp I first saw in 2000
Classic outcrop of Laughlin conglomerate
Detail in Laughlin Conglomerate--note exotic clasts
Filthiest homeless camp ever
Detrital boulder in Q fan
This outcrop may be key
Last relict boulder of Laughlin conglomerate on west side of terraces
Fine sediments under the Laughlin conglomerate
Best example of strat position of Laughlin conglomerate
East face of breadloaf--showing in situ gravel overlain by reworked Qch