Author Archives

Florian Jenn – Researcher at the German Federal Institute for Geosciences and Natural Resources (BGR).
Interest besides geology and science in general: various nonsense one encounters in life, and cooking, especially Thai.

Visited countries meme

Again, I'm a bit late to the party: there's a meme going around about which countries of the world (and states of the USA) one has seen. So far,  NOLÖGIC, Looking for Detachment, Ethical Palaeontologist, Clastic Detritus, Highly Allochthonous, ReBecca's Blog, Hypo-theses, Geo­Christian, Mountain Cat Geology and Lost Geologist have posted their maps in English, and GeoBerg and Amphibol […]

Fold at Riedberg Pass in the Allgäu, south Bavaria

At the Riedberg Pass road near Obermaiselstein in the Allgäu (South Bavaria, Germany), a recumbent fold in the Flysch is not only nicely exposed, but also easily accesible – right at the roadside, including a (small and not “offical”) parking space. (A detailed location description is in section “Getting there” below.) Sadly, last summer I […]

Geologist's 100 things meme

Via the Lost Geologist I came across this 100 things meme – what have I done or seen? It was started by Geotripper; check the comments there for other people's lists. I am rather late to this, yet at the end of the year, it's a nice opportunity to look back.

Rocks of the “Early Anthropocene”

“Aqueduct marble” (travertine) from Cologne, diameter ≈25cm. Photo taken at the Geological Collection of the BGR, Berlin.

Today I visited the Federal Institute for Gesciences and Natural Resources (BGR) roughly the German analog of the USGS, for a talk about the OneGeology project. Sadly, this was cancelled on short notice, but as a substitute, they offered a tour of their Geological Collection. (Thanks to Dr. Ehling.) Besides shelves and cabinets with several […]

Stratigraphy stylesheet

When preparing my post on the human arm as a geological timescale I looked up the colours for my table from the ICS’s International Stratigraphic Chart. This colour scheme is in turn based on the International Geological Map of the World. The ICS offers both the “official” CMYK and the corresponding RGB colour codes for […]

Cattle like hydrogeology too

Brian's Friday Field Foto clearly shows sheep's interest in Paleogene geology. Some years ago I learned that cattle (at least in Northern Thailand) are also quite curious about the earth sciences – hydrogeology in this case.

Geological Time-Arm

Some time ago Callan Bentley collected a few nice geological analogies. I instantly liked one of those, found in the comments: earth history as a human arm.

Where on Google Earth #143

In what might be one of the hardest (at least longest-unsolved) WoGE puzzles, Péter has given a nice insight into Precambrian/Proterozoic parts of the South American Platform. This made me realise that I know embarassingly little about that continent – basically nothing except the Andes. Hopefully people didn't completely give up on WoGE after that […]

Very nice.

n.t.

Mineral Top 5

Callan Bentley asks what are the five most important minerals one should know about, and why – “if you had to introduce a non-geologist to just five of the earth's multitudinous building blocks, which ones would you choose to share?” Here's my list.

Slightly disconcerting anniversary

The day before yesterday it has been 12 years since I've come to Cottbus. That means that I'm here for more than a third of my life. Back then, I definitly wouldn't have expected this.

Where on Google Earth #141

Ron Schott's WoGE had a nice drainage pattern in the Atacama Desert. But now for something completely different:

Where on Google Earth #135

One more cycle of back-and-forth between Péter and me. After his nice patterns of the meanders of the Paraná river and my rather poor explanation thereof, it's time for a trip to the sea:

Where on Google Earth #133

After the beautiful but hard to find WoGE 132 by Péter Luffi, I have one that might be a bit simpler. I guess so at least.

The mural mosaic in the Alfred-Bentz-Haus, Hannover

This is my contribution to this month's Accrectionary Wedge Carnival “Aesthetic Geology”, which is hosted by Geological Musings in the Taconic Mountains. The Lost Geologist beat me to exploiting our field trip about Dimension and Ornamental stones in Berlin, so I had to come up with something else:

Where on Google Earth #131

It seems that WoGE wants to oscillate between the Lost Geologist and me. I hope this is unsedimentary enough for him:

Where on Google Earth #129

To the Lost Geologist's surprise, I rather quickly found his WoGE 128. Admittedly, due to a bit of luck and being inspired by travelling through the Harz just some days earlier… For today's WoGE, I tried to find something less German, and after some zooming around I came across this nice-looking feature (part of which seems […]

Pangea Day – Geology Style

Chris from Good Schist had a nice idea: locate where you (or, more precisely, your bedrock) would have been when the Pangea supercontinent broke up in the late Triassic, 220 million years ago. Locating southeastern Brandenburg proved a bit difficult, as the late (German) Triassic (“Keuper”) had been a time with varying sedimentation patterns, but […]

Where on (Google) Earth #95

pl solved Where on (Google) Earth #94. He does not have his own Blog, so he asked me to host an image for him on my site.