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Gov. Ducey signs bill transferring the former AZ Mining & Mineral Museum to Univ. of Arizona

Polly Rosenbaum Bldg. Phoenix From May 2011 through Aug. 2016, assets of the AMMM were managed by the Arizona Historical Society. The collection’s ~ 22,000 mineral specimens will remain in storage at the Historical Society’s Heritage Center in Tempe until the University of Arizona is ready to receive them. Show More Summary

The Hawai'i That Was: Waimea Canyon, the View You "Have" to Earn...

3 months agoAcademics / Geology : Geotripper

You may be utterly surprised by this, but I was kind of a strange kid. I loved the outdoors of course, and was absolutely fascinated by geography, and when I learned about topographic maps in the scouts, I had found my calling. I liked...Show More Summary

The Shocking Truth About Aftershocks

After an earthquake, some aftershocks go on for an astonishingly long time. -- Read more on

Redux: George Lucas Had It Wrong. A Day of Fierce Pride at Modesto Junior College

3 months agoAcademics / Geology : Geotripper

It's funny how the same thoughts can move through one's head during an event, even when the events are separated by years. My mind wandered just a little bit during our graduation ceremony tonight, because that can happen while 700-800 names are read off and people march across a stage. Show More Summary

The Alpha and Omega of the Wildflower Season at the Red Hills ACEC

3 months agoAcademics / Geology : Geotripper

With some careful selective editing one can make it look like the superbloom is continuing in the Red Hills Area of Critical Environmental Concern, but alas the bloom is beginning to fade. We drove up there today and I was standing in this field of Monkeyflowers when a car pulled up, looking for the Red Hills. Show More Summary

AZGS @ National Earthquake Program Managers Annual Meeting in Oklahoma City - 25-27 Apr. 2017

NEHRP Logo Each year, earthquake experts from ~ 30 U.S. States meet for three days to commiserate – and brainstorm - on the challenges of mitigating the impacts from earthquakes on people and property. FEMA (Fed. Emergency Management Agency) hosts the meeting as a part of the National Earthquake Hazard Reduction Program (NEHRP). Show More Summary

The Inside Scoop on the Chilean Earthquake Swarm

According to locals, Valparaiso's 6.9 isn't worthy of being called an earthquake. -- Read more on

From the Road: Some Nice Gneiss

Every time I drive Highway 6 between Idaho Springs and Golden, Colorado—and I almost always take that route when heading east, rather than the section of I-70 between Idaho Springs and the hogbacks—I try to get a few photos of the great gneiss forming the canyon walls. Show More Summary

Why Science Matters: March For Science 2017

3 months agoAcademics / Geology : Geotripper

A bank robber can make a lot of arguments about why he or she should be allowed to rob a bank. "The money in the bank is just sitting there, it's not aiding the economy by being circulated", or "By taking this money and spending it, I'll be creating jobs", or "But I'll give some of the money to charities". Show More Summary

We'll Pretend I Saw the Superbloom the Same Way I Hiked the Pacific Crest Trail Today

3 months agoAcademics / Geology : Geotripper

I showed up late and at the wrong address for the party. There have been so many reports of the "superbloom" of wildflowers around Southern California this winter and spring that I was anxious to do some traveling and see the sights....Show More Summary

What I marched for

Saturday was Earth Day, an occasion that usually leaves me lukewarm at best. But this year it was also the day of the worldwide March for Science. A few news stories have quoted environmentalists who resented that the march happened on “their” day. But from my viewpoint, that’s the best day of the year for […]

One Simple But Effective Action You Can Take for American Science - Today

The March for Science is over, but the fight for science is just getting started. -- Read more on

Kelvin-Helmoltz Clouds Over the Sierra Nevada?

3 months agoAcademics / Geology : Geotripper

I defer to those who know more about such things, so are these Kelvin-Helmoltz clouds I saw today over the Sierra Nevada east of Madera? We were driving home on Highway 99 in the Great Valley when we saw these clouds forming on the eastern horizon in the Sierra between Kings Canyon and Yosemite National Parks. Show More Summary

'Be it Proclaimed' - Salute to Dr. Mary Poulton (Univ AZ)

Sen. McCain aide (l) reading letter thanking Mary Poulton (r). At today's Arizona Mining Alliance luncheon, Dr. Mary Poulton, Professor, University of Arizona, was honored for her long service to America's mining industry and to her students and colleagues at the University of Arizona. Show More Summary

Managing the Colorado River | 27 April

Interested in the fate of the Colorado River in a period of overallocation, drought and climate change? Come join the discussion next Thursday, 27 April at 4:00 p.m. on the campus of the Univ. of Arizona: Environment and Natural Resources 2, Room S107, Tucson, AZ.

Arizona House Rules Committee Passes SB1415

Today, the Arizona House Rules Committee passed SB1415. SB1415 transfers the Polly Rosenbaum Building and the former mineral and mining artifact collections to the Univ. of Arizona. I gather this was a pro forma meeting before the Rules Committee as it ended less than 10 minutes after it began. Show More Summary

Essential collectibles #8: Coprolites

Our look at those fossils that commonly bought rather than collected has so far looked at the fossil remains of animals, whether shells, teeth or whatever. But this time we’re looking at a trace fossil; […]...

Blue John stone: a remarkable fluorite from a limestone cavern

Blue John stone is the name given to banded fluorite found in the Castleton area of Derbyshire in England (Ollernshaw, 1964). It has been prized for centuries. Chemically, it is a calcium fluoride (CaF2) and […]...

Geology and terrestrial life of the Carboniferous

The Carboniferous Period is a fascinating time in earth history. It spanned 60myrs (359.2 to 299.0mya), towards the end of the Palaeozoic era, falling between the Devonian and Permian. During the Carboniferous, the supercontinent Pangaea […]

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