Brian might not like it, but I think this t-shirt is pretty cool:
(via the Livejournal community)
Highly Allochthonous
News and Commentary From the Wide World of Earth Science
Search
Profile
Chris Rowan is a geologist specialising in the dark arts of paleomagnetism, and getting people to pay him to travel to exotic destinations for fieldwork. Having drilled up New Zealand during his PhD, and South Africa in his first post-doc, he now works at the University of Edinburgh.
What the heck does 'Highly Allochthonous' mean?
Geoblogosphere latest
Recent Comments
- Pete on Geopuzzle #7
- Kim Hannula on Could an iPhone be a useful field tool?
- Chris Rowan on Field trip diary: Part 2
- Anne Jefferson on Field trip diary: Part 2
- Anne Jefferson on Field trip diary: Part 1
- Govind P. Joshi on Inspiration for the budding geologist
- Lab Lemming on Field trip diary: Part 2
- Chris Rowan on Field trip diary: Part 2
- Lab Lemming on Field trip diary: Part 2
- coconino on Field trip diary: Part 1
Recent Posts
- More fuss over Enceladus
- Field trip diary: Part 2
- Could an iPhone be a useful field tool?
- Field trip diary: Part 1
- The Lake Missoula megafloods
- Field Pack Amenities
- Where rocks, water, and history intertwine
- Back to work
- So near, yet so far
- Not dead - just in Oman
Blogs I read
-
Geology (rotating)
Fossils (rotating)
Climate
- Head In a Cloud
- James' Empty Blog
- Open Mind
- RealClimate
- Stoat Misc. Science
- According to Colwell
- Bad Astronomy
- Bad Science
- Centauri Dreams
- Panda's Thumb Scientists
- Am I a woman scientist?
- Minor Revisions
- Propter Doc
- Rising to the Occasion
- Sciencewoman Carnivals
- The Accretionary Wedge
- The Boneyard
Categories
- academic life
- bloggery
- climatology
- environment
- fieldwork
- general science
- geohazards
- geology
- gifts and gadgets
- photos
Archives
- June 2009
- May 2009
- April 2009
- March 2009
- February 2009
- January 2009
- December 2008
- November 2008
- October 2008
- September 2008
- August 2008
- July 2008
- June 2008
- May 2008
- April 2008
- March 2008
- February 2008
- January 2008
- December 2007
- November 2007
- October 2007
- September 2007
- August 2007
- July 2007
- June 2007
- May 2007
- April 2007
- March 2007
« Should I be linking to you? | Main | Into the Bushveld #2: 'Look at the size of that thing!' »
Layer cake stratigraphy
Category: bloggery • geology
Posted on: February 5, 2008 7:30 AM, by Chris Rowan
Comments
oooh...I do like it...i might have to get that
Posted by: BrianR | February 5, 2008 10:27 AM
What on earth are those clastic dikes doing looking like that?
Posted by: Maria | February 5, 2008 11:55 AM
Ok, so 'splain to me how you get an inclined-layered sequence sandwiched between two horizontal-layered strata.
Posted by: Divalent | February 5, 2008 4:51 PM
I've had that shirt since its first print a couple of years back. It's always inspired jealousy among my fellow geologists.
It's also a great conversation starter since no one has yet found a reasonable way the inclined sequence could be place between two horizontal strata. The best I've heard is the inclined layers slumped on a very shallow incline over the flat and were then eroded. But even that is pretty far fetched.
Posted by: Chris (goodSchist) | February 5, 2008 7:32 PM
Maybe the horizontal layer below the tilted beds is a shear zone, and everything further down is pseudo-stratigraphy. And that one layer partially melted to make the dikes. (Which would mean... very radioactive chocolate, or something?)
It's a core complex with an unconformity on top of it.
(Or maybe it's another volley in the jelly sandwich vs creme brulee argument.)
Posted by: Kim | February 5, 2008 11:16 PM
It's geofantasy! You know-- What you come up with when you have to have the cross section done by class at 8 am and that dang QC (quaternary crap) is hiding all the outcrops... :-)
mmm... chocolate geofantasy... I think I must make this shirt mine... :-)
Posted by: Jeri lynn | February 14, 2008 5:02 PM
From Massachusetts, the land where stratigraphy often needs "tectono-" placed in front of it to make it make sense...
The T-shirt is indeed very cool, and I want one! However, to play devil's advocate, it's painfully obvious that the whole section represented is on the overturned portion of a large nappe-structure, with the tilted layers representing the eroded remnants of the overturned limb, and the layers below unconformably laid on top. The top-most layers in the current stratigraphy are merely a weathered decollment (sp?) zone. The whole sequence was flipped into its present orientation by a secondary back-thrusting event, then baked at 350 degrees for 45 minutes... How's that for geo-fiction?
Posted by: Joe | February 15, 2008 11:58 AM