Saturday, January 26, 2013

Flow direction?

Update comment (1/30/2013)

Thanks to comments by MudRake and Charlotte.  My first impression at the outcrop was flow R-to-L, which they also suggest.  The outcrop main face orthogonal direction to the photos, which were taken in a weathered fracture opening.  In this orthogonal direction are seen a jumble of onlap/offlap relationships that suggested a carbonate transport channel with flow perpendicular to the face.  The deeply weathered fracture opening allowed a rare opportunity to confirm this hypothesis,  road cut would not.  A cautionary tale about relying solely on new road cuts.  My team is in the process of reconnaissance mapping of every significant Mississippian outcrop location over a 4000 sq mi area.  This is at the heart of the MArkUP proposal that will be the subject of a later post.  Here is a teaser....



Original post (1/26/2013)

The outcrop photo below was photographed on 1/21/2013 in Madison County, Arkansas.  The shown section is in the uppermost Mississippian limestone.  The crinoidal beds display laminations typical of transported sediment.  Can anyone say (and justify) if the flow was right-to-left or left-to-right?  Put your reply as a comment.




Tuesday, January 8, 2013

DISC Rose and Thorn

When my son David was in the Boy Scouts, the troop would often go camping or on a high adventure hiking trip.  We had the tradition of taking a few minutes after each long day to reflect on events.  Each boy was asked to name the day's rose (best thing) and thorn (bad thing).  With so many boys in tight quarters tempers were sure to flare.  These events were often the thorns and the reflection time gave the adult leaders a chance to talk it out with the group and then follow up with all the good things that happened.

In that vein, I humbly offer this list of roses and thorns from my year as DISC instructor for 2012.


Most amazing place:       Sugar loaf mountain (Rio)
Favorite place:           Narita, Japan
Most amazing building:    Galleria (Milan)
Most amazing event:       Earthquake (Milan)
Most traffic:             Moscow 
Least traffic:            Midland
Worst passport line:      5 hours (Saudi Arabia)
Best view:                Atop Sugarloaf (Rio)
Best food in general:     New Orleans
Best meal:                Dora(Buenos Aires)
Best vege food:           Le Grenier(Paris
Cleanest city:            Narita, Brisbane
Most crowded:             London
Best castle:              Dunnotar(Aberdeen)
Least crowded:            Stavanger 
Most graffiti:            Paris 
Most expensive hotel:     Moscow 
Most expensive taxi ride: Milan
Most expensive beer:      Stavanger 
Biggest airport:          Beijing
Smallest airport:         Midland
Best airport:             Brisbane
Largest class:            110 (Calgary)
Smallest class:           5 (Copenhagen)
Hottest:                  97F/36C (Midland)
Coldest:                  38F/3C (Stavanger in June)
                          31F/-1C (Istanbul in Dec)

Best pub:         Little Creatures Brew Pub (Perth)
                  Warwick Arms (London)
Best coincidence:         
                  Antiquarian book fair (London)
Worst incident: 
                  Slide problems at DISC 1 (Brisbane)
                  Counterfeit $ scam (Buenos Aires)
                  Missed flight (Villahermosa)