Posts

February 13, 2015

+
3:42 PM | The Levee Hook at Deming
I've posted before about the Deming levee (nooksack-levee-at-deming). The image below shows what is being protected and points out the hook at the downstream, west end of the levee.  The hook at the west, downstream end is taking the brunt of the river of late and has been progressively eroded. The only purpose of the hook is to prevent the river from entering into an area of bottom land with forest and old river channels. The hook was built by the Army Corps […]
+
12:48 PM | Friday fold: Ptygmatic Irving Fm., Colorado
Another one from Kim: Kim says: Pygmatic folds in the Precambrian Irving Formation. I think this is 1.7 Ga deformation, late in the Yavapai orogeny, which added various arcs in Colorado to North America. Good place to think about strain ellipses in progressive deformation. Zooming in on the best part, and dialing up the contrast a bit: That’s intense! Seriously strained rocks. What fun!
+
9:29 AM | The Titanic was sunk by an Apatosaurus cervical
According to Rare Historical Photos from the 1860s to the 1960s, this is the iceberg that sank the Titanic: Clearly this was no iceberg, but a gigantic Apatosaurus vertebra, most of it hidden under water. Here is an artist’s impression: They get everywhere, don’t they?
+
6:44 AM | AZGS at Mining Day on the Capitol
AZGS participated in the Mining Day at the Capitol in Phoenix on Wednesday, with an informational table, and filming interviews with legislative leaders about mining and mineral resource issues for the next episode of our online video magazine, Arizona Mining Review.  That episode should air on February 25 at 10 a.m. and posted to YouTube afterwards.     [Right, Chris Hanson, Nyal Niemuth, and Stephanie Mar preparing for a video interview]Mining and supply/service […]
+
6:39 AM | Marotzke & Forster Respond to Nic Lewis
This is a re-post from Climate Lab Book In a recent post on Climate Audit, Nic Lewis criticised Marotzke & Forster (2015, Nature) for applying circular logic to their arguments about forcing, feedbacks & global temperature trends. This is a guest post by Jochem Marotzke & Piers Forster replying to those criticisms. No circularity It has been alleged that in Marotzke & Forster (2015) we applied circular logic. This allegation […]
+
1:50 AM | Crossing Paths With Darwin
Today is Charles Darwin’s 206 birthday, and I crossed his path by accident last October in Falmouth, UK. Darwin left for London (and home) from a building in Portsmouth that still stands. It’s an HSBC Bank branch now, but on that Sunday in 1836, it was a coaching inn. You can see the historical marker on the corner of the building, and a closeup of it is below. Darwin would …
+
1:39 AM | Cassini begins a year of icy moon encounters with a flyby of Rhea
At last! Cassini is orbiting in Saturn's ring plane again. I do enjoy the dramatic photographs of Saturn's open ring system that Cassini can get from an inclined orbit, and we won't be getting those again for another year. But with an orbit close to the ring plane, Cassini can repeatedly encounter Saturn's icy moons, and icy moon flybys are my favorite thing about the Cassini mission.
+
1:29 AM | Movies in your geology
No, that's not a typo - it's the topic of a discussion I prompted on Twitter a few weeks ago and then immediately forgot to post about. Fortunately, through the wonder of Storify, I can recap it for everyone. The backstory is that I had a request from a reader for movies he could show that featured geologically interesting places, but weren't necessarily about geology or disasters. He also requested that they be fairly popular (things that had done well at the box office and might be expected […]
+
1:24 AM | Geo 1095: February 12, Day 773: Quake-Cracked Columns
Standing and zooming closer to the middle of yesterday's photo, we can see the answer to that post's "dance floor" puzzle. The stalagmites and columns are dancing a stately waltz of tectonics. We appear to be looking at a very low-angle normal fault, dipping to the left, with the top offset to the left. Speleothems are notoriously slow-growth features, and highly variable in different locations within the same cave. The fracture across the columns here has clearly been resutured, but not […]
+
12:32 AM | Darwin’s other theory (repost)
Diagrams from Darwin, 1842. I originally published this on my old blog, Updates from the Paleontology Lab, on March 24, 2010. I’m republishing it here for Darwin Day. Tim has to write an essay about a famous scientist for his … Continue reading →

February 12, 2015

+
11:57 PM | Geo 1095: February 11, Day 772: Stalagmites on a Flowstone Dance Floor
When calcite-saturated water droplets fall from the ceiling, not only can they slowly build stalactites from there, but when they hit the ground, the agitation causes more calcite to precipitate. This leads to the development of stalactites' counterparts, stalagmites. In this case, the slow flow of groundwater is still saturated with enough calcite that it has created a lower, flatter platform of flowstone. The high points on that "dance floor" represent the impact sites of steady drips from […]
+
11:10 PM | Geo 1095: February 10, Day 771: Cracked Ribs
I suppose I'd call this a solution fissure. It seems evident that the diagonal fracture in the top left middle was the weak zone allowing solution along its plane, though whether that's a joint or a fault is unclear from the photo. The features I find interesting, though, are the "ribs" along the sides of the fissure. They look close to horizontal, but that could be misleading. They could just happen to align with whatever direction my camera was pointing, which might not have been […]
+
10:18 PM | 'Unprecedented' Drought Looms for Western US
Climate change could make severe drought almost a given in the western United States by 2100. Continue reading →
+
10:02 PM | The Best Tip for Keeping Warm In A Deep Freeze
With the coldest air in sometime arriving tonight over the Northeast U.S. and lingering through much of the next 7 days, I thought I might pass on my best tip for keeping warm in really cold weather. Yes, you already know to dress in layers, but many times when doing this, people make themselves even colder by wearing tight-fitting clothes. So, here is the most important tip to keep warm: wear …
+
7:39 PM | Life After the First Core Came Up
Yes! Life suddenly became different. Many of us, mostly the scientists, who were sailing on-board the JOIDES Resolution as well as on an International Ocean Discovery Program expedition for the first time, had been occupied for the first few days to adopt the new life on-board, and to learn techniques that would be used for the research during the cruise. read more
+
7:00 PM | 8 Million Tons of Plastic Lands in the Ocean Every Year
Humans are throwing enough plastic into the world's oceans to cover Manhattan in coffee stirrers and plastic bags, 34 times over.
+
6:52 PM | Looking for a post-doctoral position? Come and work with me at the University of East Anglia
I am currently advertising a three year post-doctoral position to work with me on a range of landslide projects at the University of East Anglia
+
6:34 PM | Lake Powell and the Colorado River Basin’s disappearing 2015 water
The Colorado Basin’s two primary reservoirs lost, on paper, a million acre feet of water because of January’s dry snowpack, according to the latest numbers from the U.S. Bureau of Reclamation. That’s the difference between what we expected to end the current water year with based on the January forecast, versus what the forecast looks ...Continue reading ‘Lake Powell and the Colorado River Basin’s disappearing 2015 water’ »
+
5:40 PM | How Do the Polar Vortex and Warming Relate?
The polar vortex is sending cold air to the East again. Research continues into role warming might play. Continue reading →
+
5:37 PM | Why it's Nice to Teach in California: It's Field Season All Year!
I'm not sure when or why being in California became a "negative" thing. Sure, we have our urban areas and horrible traffic and air pollution, wildfires, and long droughts. But on the other hand, we have the most diverse set of geological landscapes to be found anywhere on the planet. One can quite seriously work on a tan at the beach, jump in a car and go skiing, and then slide down a sand dune in a desert all in a single day. And for us geologists who teach? We have the longest field season […]
+
4:02 PM | Charles Darwin - the Monster Slayer
Today geologist Charles Darwin is not remembered as great monster hunter, despite some Victorian paleontologists and geologists were interested in the topic, but after discussing how geologists tried to capture “Nessie“, it´s time to hunt for “Bigfoot“:Since ancient time people were fascinated by monsters – a term adopted for mythical creatures, but also real animals or humans with grotesque anatomical deformations. In the 18th and 19th century such […]
+
3:48 PM | In Pictures: DSCOVR Headed for Deep Space
On Wednesday evening, a SpaceX Falcon 9 rocketed into orbit with DSCOVR, the Deep Space Climate Observatory. Here's a photo and video roundup.
+
3:23 PM | Stationarity and snowmelt in the Pacific Northwest
We have a mismatch between 20th century plumbing and a 21st century climate. USGS hydrologist Paul Milly and colleagues in 2008 threw down a marker in a Science paper arguing that human interventions (intentional and not) have rendered a basic premise of human water operations invalid. The premise is “stationarity”, the idea that with data ...Continue reading ‘Stationarity and snowmelt in the Pacific Northwest’ »
+
3:05 PM | Explainer: The Keystone XL Pipeline Debate
Construction of the hotly debated Keystone XL pipeline has just been approved by the U.S. Congress and will likely be vetoed by President Obama. What's the debate all about? Trace explains.
+
8:26 AM | Why the Miocene Matters (and doesn’t) Today
Past climate changes are analogs, albeit imperfect ones, for our modern climate change. Despite the differences between such episodes and today, they tell us a great deal about how the Earth-atmosphere-ocean-ice-vegetation-climate system responds to perturbations of the carbon cycle. Global warming in the Miocene at 16.9 million years ago is a mild example. A time a bit like our own… As we cross the 400ppm line in modern atmospheric CO2, we are entering climate territory […]
+
8:18 AM | Darwin Did Geology, Too! A Collection of Quotes for Your Darwin Day Enjoyment
It’s Darwin Day! Celebrating Darwin’s birthday is a lot of fun, and if you know the right skeptic’s group, there may be cake. With dinosaurs! But the reason why many Darwin Day... -- Read more on ScientificAmerican.com
+
5:32 AM | Notes from Grandy Creek, Skagit County
I was up the Skagit River valley and then up Grandy Creek Road to assess a slope. Grandy Creek Road is the access route to Baker Lake a hydro electric reservoir east of Mount Bake on the Baker River, a major tributary of the Skagit.   I put my foot up on this cut bank slope for scale.The sand and gravel is poorly sorted glacial outwashThe unit was compacted suggesting that it had been overridden by glacial iceOn the way back from my work ventures I stopped by Grandy […]
+
5:11 AM | Waiting for the Birth of History: 2015 Toyota Camry Release Date
Now, the world has waited for the birth of the new series in Toyota Camry. This car has proved its credibility in the quality and performance. The 2015 Toyota Camry release date has been inquired by the fans and the world of automobile sales and before we decide which day which is suitable for the release for this car, we better know first what things that can come from this car in the coming version. Hopefully, the car will come with greater capability.The 2015 Toyota Camry PriceWe will […]
+
1:00 AM | Stupid hoodies
By Thomas Sometimes you come across things that leave you speechless for a moment. Then you consider short whether it is worth the trouble to get upset about it. You shake your head and walk off. But then you come … Continue reading →

February 11, 2015

+
11:37 PM | Earth's Inner Core Has Its Own Inner Core
The Earth's innermost section is different from what scientists expected. Continue reading →
5678910111213
462 Results