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Posts treating: "geology"

Thursday, 24 April 2014

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An Introduction to the Geology of Gold 

About Geology [2014-04-24 19:50:39]  recommend  recommend this post  (10 visits) info
Nothing in geology excites the general public like gold. Geologists, too, have devoted a lot of attention to the details of its geochemistry and the many specific kinds of gold occurrences to be found out there among the rocks. So I've prepared a new article with the basics of this irresistible metal....Read Full

more favorite posts 

Accidental Remediation [2014-04-23 02:34:00]  recommend  recommend this post  (17 visits) info
Last month, I compiled a list of favorite posts organized by label. When I went through that exercise, I ended up with a bunch of other posts that didn't quite make the cut. Here's the runner-ups, with the last 3 labels dropped, since they each had less than 20 posts: field rants: healthy fieldwork? short psychology: alone in the hotel miscellany: in memoriam academia: organization!

Do We Need Hadean Eras? 

About Geology [2014-04-19 02:02:50]  recommend  recommend this post  (17 visits) info

 Eoarchean; US
In geology, the rocks have a way of messing with our pretty schemes. One instance I'm thinking of involves the base of the geologic time scale. The Earth itself is about 4.5 billion years old--but the time scale starts at the base of the Archean Eon with a time unit called the Eoarchean Era, running from 4.0 billion years ago (4 Ga) to 3.6 Ga. Like most of the Precambrian time periods...Read Full

Lateritic Rare Earth Deposits 

Geology.com News [2014-04-17 13:58:21]  recommend  recommend this post  (18 visits) info

 US
The Arizona Geological Survey has published Chapter 4 of the Proceedings of the 48th Annual Forum on the Geology of Industrial Minerals in their online archive. It is a paper by Mark Cocker: Lateritic, supergene rare earth element (REE)

Structural geology and tectonics 

Structural Geology Blog [2014-04-14 13:18:30]  recommend  recommend this post  (18 visits) info
This video point at some basic aspects of structural geology, emphasizing the importance of being able to read information out of structures, and to put this information into a larger-scale tectonic

Guest Blog: Groundwater Quality Management in Rural Uttar Pradesh, India 

Geology for Global Development [2014-04-14 10:00:32]  recommend  recommend this post  (14 visits) info

 GB,IN
Donald John MacAllister, serves on the Executive Committee of Geology for Global Development. He is currently leading the Hazard Factsheet project. Donald John is a PhD student at Imperial College London and is researching the application of self-potential monitoring to seawater intrusion problems in coastal aquifers. He has a BSc in Geophysics from the University

Middle-Earth gets a geological makeover 

Green Tea and Velociraptors [2014-04-09 10:47:44]  recommend  recommend this post  (18 visits) info
As if J. R. R. Tolkien wasn’t brilliant enough with his creation of Middle-Earth, it appears that using his numerous maps and illustrations provided, supplemented by observations from within the texts themselves, a geological reconstruction can be achieved! I recently came across this old article from the Proceedings of the J. R. R. Tolkien Centenary

What Rare Earths Mean to Geologists 

About Geology [2014-04-08 17:45:47]  recommend  recommend this post  (11 visits) info

 CN
I've prepared an article on the basics of the rare-earth elements, with particular attention to geology. Recent actions by the Chinese, who have a stranglehold on the world supply of ...Read Full

European Geosciences Union – General Assembly 2014 

Geology for Global Development [2014-04-08 11:00:01]  recommend  recommend this post  (1 visit) info

 AT
Once again Geology for Global Development will have a strong presence at the European Geosciences Union’s General Assembly, in Vienna (27 April – 2 May 2014). This is one of the largest gatherings of geoscientists in the world – with a particularly large group of natural hazard scientists, and groups from hydrology and climate. —- As usual,

Out of the Valley of Death: Geology at Fifty-five 

Geotripper [2014-04-08 08:18:00]  recommend  recommend this post  (22 visits) info

 US
img
One of the first things I tell my students (and occasionally even with some success) is "don't sleep while traveling in the vans". Death Valley National Park is the largest national park in the lower 48 states, and no matter how much time one has, it's hard to take it all in. When you only have four days, it's pretty well impossible, but there is still much to see in transit between stops.

This Week's Geo-Quiz: Geologists 

About Geology [2014-04-06 18:16:22]  recommend  recommend this post  (14 visits) info
The "Who Wants to Be a Geo-Whiz" quiz this week should really be called "Who Is a Geo-Whiz?" It's about the important people in geology, past and present. So, remember Momma's advice—in the case of this quiz, it's not what you know about but who you know about that will lead to

Oso Landslide Update 

GeoPrac.net [2014-04-03 15:36:35]  recommend  recommend this post  (42 visits) info

 US
The Oso Landslide death toll is now up to 29. This is one of the worst natural hazard disasters I can remember in recent times. First and foremost I think should be the memories of the victims. There are so many heart-wrenching stories of the people that lost their lives in this giant landslide. I think those stories underscore the importance of the jobs of geologists and engineers. We have a responsibility to protect life and property in the work that we do. I'm not saying this landslide or [...]

Darren Reilly Thesis Defense! 

Watershed Hydrogeology Blog [2014-03-31 17:49:01]  recommend  recommend this post  (17 visits) info

 US
Department of Geology – MS Thesis Defense Darren Reilly “IDENTIFICATION OF LOCAL GROUND WATER POLLUTION IN NORTHEASTERN PENNSYLVANIA: MARCELLUS FLOW-BACK OR NOT?” Tuesday, April 1, 9:15 am, McGilvrey 236 Co-advised by Drs. Anne Jefferson and David

LA Earthquake: Don’t panic. 

GeoMika [2014-03-30 00:36:56]  recommend  recommend this post  (46 visits) info

 US
I wrote an anti-hysterical guide to the earthquakes in Los Angeles for io9. Head over for the geology, seismology of recent earthquakes, interpreting risk forecasting, and preparing for the Big One without freaking

Rare Earth Elements in New Mexico 

Geology.com News [2014-03-29 16:32:41]  recommend  recommend this post  (20 visits) info

 US
The Arizona Geological Survey has published Rare Earth Elements Deposits in New Mexico by Ginger McLemore in electronic format. It is from the Proceedings of the 48th Annual Forum on the Geology of Industrial Minerals, Phoenix, Arizona, April 30 – May 4,

it keeps going 

Accidental Remediation [2014-03-29 03:01:00]  recommend  recommend this post  (25 visits) info
img
Sometimes people have a preconception about what the soil profile is. In my part of the world, you generally have turf/roots above a sandy soil. At some unspecified distance which is likely less than 20 feet, you'll run into rock and that's the end of the soil profile. This is true for lots of areas in my region, but not all. I occasionally run into a situation where a layperson continues to

Uranium and Thorium of the Reading Prong 

Geology.com News [2014-03-27 13:10:39]  recommend  recommend this post  (12 visits) info

 US
The Pennsylvania Geological Survey has revised and republished: “GEOLOGY AND MINERALOGY OF URANIUM AND THORIUM IN THE READING PRONG OF BERKS, LEHIGH, AND NORTHAMPTON COUNTIES, PENNSYLVANIA”. Quote: “Portions of the Reading Prong of Pennsylvania are part of a U- and Th-rich province that contains a complex variety of U and Th occurrences. Concentrations as high

Marc Deshowitz Explains Geology of Silver Reef 

Utah Geological Survey - blog [2014-03-24 17:22:18]  recommend  recommend this post  (13 visits) info

 US
mesquitecitizen.com Friends of Gold Butte presented its monthly lecture at the Mesquite Community Theatre on March 19, featuring geologist Marc Deshowitz. Having presented several other lectures on geologic history to the group, Deshowitz was literally brought back by “popular demand” of the audience. READ

Stillaguamish Landslide- Geologic Perspectives 

Northwest Geology Field Trips [2014-03-24 13:33:52]  recommend  recommend this post  (61 visits) info

 US
Dan McShane has written some geologic perspectives about Saturday’s landslide into the Stillaguamish River. Dan is a consulting geologist based in Bellingham and author of ‘Washington Landscapes’ blog, and has some great insights into the geology and history of the slide area. Rather than trying to rewrite his excellent reports, I’ll just provide the links. It

Born This Day: Adam Sedgwick 

Palaeoblog [2014-03-22 13:30:00]  recommend  recommend this post  (24 visits) info

 Cambrian; GB
Adam Sedgwich (March 22, 1785 - January 27, 1873) was an English geologist who first applied the name Cambrian to the geologic period of time, now dated at 570 to 505 million years ago. In 1818 he became Woodwardian Professor of Geology at Cambridge, holding a chair that had been endowed ninety years before by the natural historian John Woodward. He lacked formal training in geology, but
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