Earthly Musings's Latest Posts
Take a Geology Field Trip with the Arizona Hydrological Society and American Institute of Professional Geologists This September
Web banner for the 2014 AIPG and AHS National ConferenceThis September a joint conference hosted by the Arizona Hydrological Society (AHS) and the American Institute of Professional Geologists (AIPG) will be held in Prescott, Arizona. The dates are September 13 to 16, a great time to visit Arizona's mountain country near the historic town of Prescott. A fantastic lineup of field trips, led by many local experts, will provide those interested in the geology of northern […]
I recently led a group of amateur archaeologists into Monument Valley. This landscape icon never fails to impress. It truly is an awesome place.Taken from John Ford Point looking north. Let's meet the rock layers of Monument Valley.There are four rock layers that make up a typical red rock butte in Monument Valley and from oldest to youngest (bottom to top) they are labeled above. The Organ Rock Shale is often overlooked since it only forms the "apron" upon which the "monument" stands. It is […]
On Thursday, March 20, I hiked 9.5 miles from Phantom Ranch to the South Rim of Grand Canyon. And then later that same day, I gave the Evening Program to over 100 persons. It is the latest update on my lecture, "How Old Is The Grand Canyon".Mike Quinn of the National Park Service Collections Museum videotaped the lecture and you can watch it here on this You Tube link.Since the lecture was given to the general public and many of the Park's interpretive rangers, it was difficult to exactly know […]
The Osos (or Hazel or Steelhead) Landslide in Washington State - Can Geologic Information Be Better Utilized by Non-Geologists in Geohazard Assesments?
View downstream of the Oso or Steelhead landslide of March 23, 2014. Photo courtesy of Jay InsleeA devastating landslide in Washington state on Saturday was an accident waiting to happen. The area had experienced numerous slides within the past 65 years, with the most recent event occurring in 2006 (see the table below, from the Yakima Herald). Unconsolidated glacial debris (composed of rock, sand, and mud) deposited during the last Ice Age is responsible for the weak substrate in this part of […]
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