Kilbourne Hole – turbidity currents on land!

Callan Bentley over at Mountain Beltway just posted about Aden Crater, and I though i would share a few photos from Kilbourne Hole, a nearby maar volcanic crater.  It's only about 15 miles from my childhood home, and I went there quite a bit in high school, both for geology and just to get out …

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Geology on the Wing Wednesdays #10 – Sandy Creek winding through the drought-stricken Hill Country, Texas

Whew! I had a hectic holiday season, but a great one.  Too great, in fact, to be blogging.  So now I am back in the swing of things, here is a quick photo from a recent trip to see family.  Contrary to popular opinion, there is topography in Texas!  Here is a nice shot of …

Continue reading Geology on the Wing Wednesdays #10 – Sandy Creek winding through the drought-stricken Hill Country, Texas

Geology on the Wing Wednesdays #8 – Abandoned Sabine river delta near Cameron, Louisiana

The Sabine river has a very interesting coastal history, mostly documented by Rufus LeBlanc.  He shows a pattern of modern avulsions of the river updip from the coastline, leading to at least two deltas.  Due to low sediment supply and the position of the coastline with the dominant Gulf winds, the deltas are wave dominated. …

Continue reading Geology on the Wing Wednesdays #8 – Abandoned Sabine river delta near Cameron, Louisiana

Counter point bars in fluvial AND deepwater channels?

The Geology on the Wing Wednesday post about counter point bars on the Brazos river has provoked a few questions, so I thought it would be a good idea to expand on it a little bit. Meandering(or sinuous) channels migrate, and can do so one of at least two ways. The first is by translation, …

Continue reading Counter point bars in fluvial AND deepwater channels?

Geology on the Wing Wednesdays #5 – Newly created beach on Lake Houston

This week, guest blogger Dave Wolf (@davidewolf on twitter) is in the house, and has a sobering look at the drought crisis affecting Texas.  Dave took these photos from a MUCH larger plane than mine, as evidenced by the enormous wing flaps in the photo.  The Texas drought has been in the news a lot …

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“Geology on the Wing” Wednesdays #4 – Point bar and counter point bar, Brazos river

The Brazos river runs from the high mountains of New Mexico all the way down to the Gulf of Mexico, meandering through almost all of Texas.  It is relatively unmodified by humans (as American rivers go), and thus displays great fluvial architectures.  The water level in the river in this photo was quite low, due …

Continue reading “Geology on the Wing” Wednesdays #4 – Point bar and counter point bar, Brazos river