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  1. Home

Joseph Cook

AZGS Research Scientist

Click the image to see the original photo at maximum resolution (potentially large files). Click the title to see a full description, geolocation, and more.

Photos 1 - 64 of 64
sedimentology, sampling
Sampling cobbles in eastern Arizona
debris flow
Scrambling across bouldery debris
earth fissure, Cochise County
Earth fissure flooded by monsoon rain
fluvial system, cobbles, sedimentology
Counting cobbles
earth fissure, geological hazard
Road damaged by earth fissure, Cochise County
Drag fold in Safford Basin deposits
earth fissure, geological hazard
Tale of an earth fissure near Apache Junction - July 2017
KUAT cameraman in earth fissure
Stalking wild earth fissures in Cochise County
Earth fissure exposure along Loop 202, Phoenix Metro Area
fissure, geologic hazard
Earth fissure in residential area of Chandler Heights, Arizona
Tip of the Sinkhole, Colossal Cave Mtn. Park, Vail, AZ
sinkhole
Sinkhole at Colossal Cave Mountain, Park, Vail, Arizona
Bouldery debris-flow levee, Santa Catalina Mtns., Arizona
Tributary fan deposits and basin fill along the San Pedro River, Arizona I
Tributary fan deposits and basin fill along the San Pedro River, Arizona II
wash
Conglomerate resting on channel sediments
Palominas Arroyo Channel
Earth fissure rupturing caliche soil near Luke Air Force Base, Peoria, Arizona
Quaternary(?) landslide features along I-17 north of Black Canyon City
Sedimentary package of Dragoon Wash, Arizona
Distribution of landslides in Arizona
Looking down the sinkhole
Earth Fissure Study Areas of Arizona
AZGS Bovine Rescue Team - at work
Fissure exposes buried gas line near San Simon, Arizona
Deconstructing geologic mapping of the San Pedro River Valley, Arizona
Verde River cobbles capped by piedmont deposit
Holocene river alluvium, upper Verde River
Pleistocene river terraces of the Verde River
Pleistocene cobbles of the San Pedro River
Red pebbles and cobbles, San Pedro River terrace
Adobe ruins of the San Pedro River Valley
Bank erosion on San Pedro River
Cut & fill sedimentary structure along the Verde River
Peach Spring Tuff
Thunder River Falls, Grand Canyon
Pothole in the Supai formation of Wet Beaver Creek, central Arizona
Holocene terrace of the Verde River, Bartlett Reservoir, Maricopa County, AZ
Aravaipa Canyon, southern Arizona
Cobbles of Cobblestone Canyon, Santa Catalina Mountains
Earth fissure - Cochise County, Arizona
Fresh Earth Fissure of Monsoon 2018, Cochise County, Arizona
Cut & Fill channel along San Pedro River
Palominas Arroyo of the San Pedro River, SE Arizona
Hiking in Hell Hole Canyon, Arizona
Debris-flow channel scar, Bear Canyon, Arizona
Hohokam ruins at Horseshoe Reservoir, Arizona
Pleistocene river deposits along the Verde River
West Clear Creek, central Arizona
Boulders in Wet Beaver Creek
The Crack: Wet Beaver Creek
Pebble-rich beds in Cambrian Tapeats Sandstone
X marks the spot- Lake Mead
Fortification Hill, Lake Mead, Arizona
Miles long earth fissure in southern pinal county
Rapid infilling of earth fissure in Pinal County
Arizona Rocks Postcard #12 - San Pedro River Channel
Washed out
Spring field mapping in Arizona
Wall of unconsolidated sediment
Ground fracture map
Aerial observation of ground fractures near U.S. 191, Cochise County
Aerial observation of ground fractures near U.S. 191, Cochise County
Fissures in Cochise County, Arizona. Aug 2021
Earth fissures reopen in Cochise County, Aug. 2021
Earth fissure in Cochise County, August 2021
Fresh earth fissure - 17 Aug. 2021
Split boulder on Mint Creek

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