Advertisement

You are browsing the archive for September 2011 - Page 2 of 3 - Mountain Beltway.

16 September 2011

Turbidity in Chesapeake Bay

Hurricane Irene passed this way two weeks ago, and dumped a lot of rain on the mid-Atlantic region and the northeast. As a result, runoff increased, rivers swelled, and sediment was mobilized. Some of that sediment was suspended and transported downstream. On Tuesday, I got this e-mail from my colleague Ken Rasmussen, who took students out on an oceanography field trip to Chesapeake Bay a week after the storm: Was …

Read More >>

3 Comments/Trackbacks >>


Friday fold: Pinelog Formation

Reader Jacob Langseth sent in this image of a lovely fold that he recently saw in the Blue Ridge province of Georgia. It’s located in an old CCC rock quarry, off of the Pine Log Creek Trail system, in Bartow County. You can click on that first image to make it bigger and see a bit more context. Nice differential weathering, eh? …Or you can just keep scrolling down, to …

Read More >>

1 Comment/Trackback >>


15 September 2011

Two pleochroism animated GIFs

Biotite in granite: Riebeckite: Fast and slow versions of each. Wanted to post these ASAP, so someone can use them for the Geology Word of the Week…

Read More >>

2 Comments/Trackbacks >>


14 September 2011

Is “Tertiary” archaic?

Jack and Drumlin are visiting for the day from their usual home.

Read More >>

3 Comments/Trackbacks >>


13 September 2011

More earthquake damage

These are all in the northern stairwell between the 2nd and 3rd floors of the Godwin Building here on the Annandale campus of NOVA. The cement blocks have clearly separated along their mortared edges, and the disruption of the paint layer in a series of en echelon fractures reveals that deeper structural issue. I find this a bit scary. I have no information about what, if anything, is being done …

Read More >>

8 Comments/Trackbacks >>


12 September 2011

Clinker

“Clinker” is an interesting rock type seen in Wyoming’s Powder River Basin. It forms when a coal seam catches fire, and cooks the rock above and below it, including the potential for partially melting the strata immediately above. Check out a few images of this intriguing rock here.

Read More >>

11 Comments/Trackbacks >>


10 September 2011

A dismaying course, part II: evolution

Picking up where we left off on Thursday’s post on the relationship between the 2011 Republican presidential hopefuls and science, we examined their statements on climate change. Today, we look at the other information compiled by NPR, their statements on evolution. Michele Bachmann I support intelligent design. What I support is putting all science on the table and then letting students decide. I don’t think it’s a good idea for …

Read More >>

14 Comments/Trackbacks >>


9 September 2011

Friday fold: just Kidding

You’re looking here at Mount Kidd, a peak in the Front Ranges of the Canadian Rockies that displays a tight anticline/syncline duo superimposed on the strata of the Rundle Group. Located on the west side of Highway 40, the Kananaskis Trail, south of the trans-Canada Highway, this mountain shows us what happens with Carboniferous-aged carbonates got squished and squeezed during the construction of the Canadian Rockies (what in the U.S. …

Read More >>

2 Comments/Trackbacks >>


8 September 2011

A dismaying course, part I: climate change

You may have heard that the Republican party has been embracing non-scientific and anti-scientific positions lately. National Public Radio compiled a bunch of quotations reflecting this trend on their website yesterday. I thought I might take a moment here on the blog to critique their statements (both pros and cons), and then reflect on why, in total, the Republican trend towards anti-science strikes me as a dismaying course for my …

Read More >>

8 Comments/Trackbacks >>


7 September 2011

Another updated aftershock plot…

A up-to-date tally of the aftershocks from the Mineral, Virginia earthquake is presented as a time vs. magnitude plot.

Read More >>

2 Comments/Trackbacks >>