Saturday, December 18, 2010

Meteor Crater in Earthly Musings Blog

Wayne Ranneys blog Earthly Musings has a account of his trip into Meteor Crater. Good photos of a place most people do not see.

Earthly Musings - The Blog Site of Wayne Ranney

Harry Allen

Monday, November 22, 2010

Wayne Ranney leads a great trip to the Trail of Time at the South Rim

On a windy and cold last Saturday Wayne Ranney lead the club on a great trip through the Trail of Time at the South Rim. The trail is a hike where every million years is one meter. There are brass plaques every 10 million years. We hiked all the way from the Precambran to the present-about two billion years.

Rock samples taken from all of the formations in the canyon are on pedestals at the appropriate place on the trail.

It was a great trip and a great way to view Geologic Time.

Harry Allen

Saturday, November 6, 2010

Wayne Ranney: wins book award

Congrats to Wayne Ranney for winning another book award for "Sedona Through Time"

Details are in his blog:

Earthly Musings - The Blog Site of Wayne Ranney: "Sedona Through Time" Wins National Award!

Harry Allen

Thursday, October 14, 2010

Ron Blakey Wins Honor

Ron Blakey from NAU has won the "Geosciences in the Media Award" from The American Association for Petroleum Geologists (AAPG). The award is presented for the "significant contribution of his website." Check out his impressive website at

Ron and Wayne Ranney have recently published Ancient Landscapes of the Colorado Plateau, one of the must-own books for our region.

Ron has both spoken to the Central Arizona Geology Club and will be leading a field trip for us this spring.

Saturday, October 2, 2010

Geo Field trip to Drake Cement

Friday we had a good short Club Field trip to the Drake Cement Plant. 19 people went on the trip to see the impressive operation and the Redwall quarry where they mine the limestone which they cook into cement.

There are more photos on the Central Arizona Geology Facebook Group Page

Harry Allen

Wednesday, September 15, 2010

Triassic of the Petrified Forest

Bill Parker gave a Great Talk to the club last night. They have been doing detailed work on the stratigraphy of the park -- for the first time in 100 years. They have put together a really good picture of how it was in the late triassic.

His paper on the park is open access so you can look at all the details --

Harry Allen

: Natural gas pipelines in Arizona

From the Arizona Geology blog. The location of the big pipelines in Arizona for those concerned about ruptures in their backyard.

Arizona Geology: Natural gas pipelines in Arizona

Harry Allen

Thursday, September 9, 2010

More Earthquake photos from New Zeland

Here is a link to more earthquake photos from New Zeland- note the right lateral dispacement and the enechalon faulting pattern

Living in a Maelstrom (47 pics) » Izismile - Pictures, videos, games and more

Tuesday, September 7, 2010

Canterbury Earthquake - first flyover of fault trace

Here is a cool flyover of the Christchurch earthquake fault trace.From YouTube and with thanks to the Arizona Geology blog

Saturday, September 4, 2010

Shake Map for New Zealand quake

Here is the Shake map of the recent 7.0 quake in New Zealand:

Harry Allen

Tuesday, August 17, 2010

Club has gone social networking

We have started a Facebook Group named Central Arizona Geology Club. To look at it first login to Facebook and then search for the Group. Then hit the LIKE button to join the Group and get the cool postings - and add your own.

This gives us a place for people to post and share interesting Geo-Pictures or Geo-links.

Harry Allen

Monday, August 2, 2010

Arizona Geology | Online!

Here is the online version of Arizona Geology:

Arizona Geology | Online!:

Harry Allen

Wednesday, July 14, 2010

Chrono Zoom

This is a great tool for visualizing time.


Thanks to Lee Allison for finding this.

Harry Allen

Wednesday, July 7, 2010

Ron Blakey 's home page

Ron Blakey's home page is a great source of the information and paleogeographic maps he has made and compiled. It is the best compilation of the geologic literature ever!

Ron Blakey, Colorado Plateau Stratigraphy and Geology and Global and Regional Paleogeography:

Harry Allen

Tuesday, June 15, 2010

Grand Canyon Caverns -Worlds Deepest Motel

Thanks to Arizona Geology for finding this. It is the coolest place in the state --Get Down.

Grand Canyon Caverns - Press Release

Harry Allen

Thursday, May 13, 2010

New report on Sedona sinkholes

Paul Lindburg has published his report of the Sedona Sinkholes (AZGS Cr10-C)

Arizona Geology: New report on Sedona sinkholes

It is available for download at the AZGS site.

Harry Allen

Tuesday, May 11, 2010

Possible flowslide (not a sinkhole) in St Jude, Canada

Dave's Landslide blog has pictures of the "sinkhole" that was a flowslide that killed 4 people outside of Montreal.

Dave's Landslide Blog: Possible flowslide (not a sinkhole) in St Jude, Canada

Harry Allen

Tuesday, May 4, 2010

Eyjafjallajökul - slide show

Here is a link to a long slide show (in Icelandic) with some great photos of the eruption and what it has done to the people in its wake. Hit the Spilla button to make it start.

Eldgos við Eyjafjallajökul - Myndasafn

Harry Allen

|Iron King Mine And Humboldt Smelter Update

Here is a update on the Iron King Superfund site. It is a link to the EPA site.

Site Overview|Iron King Mine And Humboldt Smelter |US EPA |Region 9|Superfund

Harry Allen

Monday, May 3, 2010

Sinkholes in the Kaibab Limestone

Arizona Geology has a photo of the McCauley Sinks which we saw on our Holbrook Basin Field Trip.

Arizona Geology: Sinkholes in the Kaibab Limestone

Harry Allen

Monday, April 26, 2010

Boobquake 2010 day

Arizona Geology reports on natural disasters as punishment.

Arizona Geology: Natural disasters as punishment

Harry Allen

Wednesday, March 31, 2010

Start looking for Tungsten

Arizona Geology has an article about what the state legislature is doing to protect us from efficient light bulbs.

Arizona Geology: Get ready for the great Arizona tungsten rush

Harry Allen

Tuesday, March 23, 2010

Farallon plate collision and Basin and Range

Here is a link to Tanya Atwater's animation of the Farallon collision with north america and the formation of the basin and range. It is a great way to visualize what happened. Click on the download in the upper right part of the page

Past Projects

Harry Allen

Thursday, March 11, 2010

Holbrook Basin Karst Field trip

Jim Neal ( is putting together a field trip to the Holbrook Basin April 9-11 2010 for the Geology Club. Here is his itinerary for the trip:

Itinerary: Holbrook Evaporite Karst Field Trip, April 9-11, 2010

Day 1, Friday, April 9th: (OPTIONAL, but Petrified Forest is also underlain by Permian evaporites and has dissolution/collapse features of interest, plus the silicified wood – our State fossil!

Rendezvous in Holbrook @ 0915 at McDonald’s (Exit 286). Driving time from Prescott is ~3 hours (195 miles via Ash Fork and I-40). Those not wanting to leave Prescott @ 0600 can find numerous motels and restaurants in Holbrook for overnight on Thursday.
Depart Holbrook @ 0930, heading to south entrance of Petrified Forest via Highway 180 and arriving PFNP ~1000. Numerous stops and side hikes during the day, arriving north Park Visitor Center ~1600 (see separate summary for PFNP). Park closes @ 1800; remainder of day can be spent at Visitor Center or Gift Shop. Return to Holbrook via I- 40, then to Snowflake.
Overnight accommodations can be secured at Fools Hollow State Recreation Area (camping) on the North side of Show Low, or at Comfort Inn, 2055 S. Main St., Snowflake (928-536-3888). Other Snowflake motels and B&Bs are also available – at lesser and greater cost. Alternatively, Holbrook accommodations can be secured for both nights.

Day 2, Saturday, April 10th: (PRIMARY TRIP) (See separate summary AND trip road log)

Rendezvous @ 0930 at intersection of Highways 277 and 77 in Snowflake. Driving time from Prescott via Ash Fork and I-40 is 3½ hours (225 miles), enabling a 0600 Prescott departure. High clearance vehicles are strongly recommended, but 4WD is usually unnecessary unless muddy conditions exist. Back road, isolated travel is required, so bring your lunch, water, hiking boots, sunscreen, cameras, rain jackets, first aid, and other accoutrements for the whole day. Day 2 Geostops will terminate ~1700 at a remote location about 7 miles off the highway and some 25 miles from Holbrook.
Overnight camping available at remote location with NO facilities and NO water. Numerous motels and restaurants are available in Holbrook for overnight.

Day 3, Sunday, April 11th: Depart McDonald’s @ 0915, heading to Winslow via I-40. Head to Chevelon Canyon and McCauley Sinks, arriving ~1015. Back road, isolated travel is required, so bring your lunch, water, hiking boots, sunscreen, cameras, rain jackets, first aid, and other accoutrements for the whole day. Day 3 Geostops will terminate ~1400, allowing for return to Prescott ~1730, or optional stops at Meteor Crater, Grand Falls, or Walnut Canyon.
See additional summaries for OPTIONAL stops (on your own) at Meteor Crater, Walnut Canyon, and Grand Falls – following the regular field trip…

We will be sending more details to those who sign up with Jim.

Harry Allen

Sunday, March 7, 2010

Geologic Maps of the 50 United States

Andrew Alden of About Geology has compiled all the 50 state geologic maps. You can take them on your travels

Geologic Maps of the 50 United States

Harry Allen

Monday, February 22, 2010

Uranium levels in water near mines no different than from natural orebodies - USGS

Arizona Geology reports from the USGS that the Uranium levels in the water no different near mines than near the natural ore bodies.The Breccia pipes may not be so evil after all.

Arizona Geology: Uranium levels in water near mines no different than from natural orebodies - USGS

Harry Allen

Monday, February 8, 2010

Utah's Dino Graveyard

Dinochick ReBecca Hunt-Foster has compiled a set of 5 Videos on the Early Therizinosaur graveyard found in Utah. It is a precursor to the Therizinosaur that was at NAUamd the subject of Dave Gilette's talk.

Dinochick Blogs: Utah's Dino Graveyard

Harry Allen

Tuesday, February 2, 2010

Mexico’s Cave of Crystals -

BlogSci has an amazing video of what could be some of the worlds largest Gypsum crystals

Amazing Video of Mexico’s Cave of Crystals -

Harry Allen

Verde River, AZ flood update -

Here is a update on the flooding on the Lower Verde from Kyle House of Geologic Froth and the Survey.
Verde River, AZ flood update - Fresh Geologic Froth

Harry Allen

Thursday, January 7, 2010

Museum of Northern Arizona Exibit

Ancient Landscapes of the Colorado Plateau
by Ron Blakey and Wayne Ranney
Exibit Opening, Presentation and Book Signing

MNA Branigar/Chase Discovery Center
Sunday Jan 10,2010
2:00 to 4:00
Directors Welcome at 2:00

"Prepare yourself to be transported back in time through the magic contained in layers of rock"

Harry Allen