Profile

Cover photo
Bob Libra
Worked at Iowa Geological Survey
Attended Indiana University
Lives in Iowa City, IA
401 followers|442,621 views
AboutPostsPhotosVideos

Stream

Bob Libra

Field Trips & Guides  - 
 
Rock meets glacier meets the last glacier. Sounds kind of like rock-paper-scissors!  An expanding quarry exposes Devonian Limestone with a lot of glacial grooving going on. There are two glacial advances here. The first on rock, about 1.5M yrs ago. This formed the land surface for about a half-million years, and then a second glacial episode occurred. The years as land surface let oxygen and oxygen-rich groundwater into the older till, "oxidizing" the till and turning it from grey to reds and browns. The oxidation colors show the contact clearly; grey unoxidized till form the younger glacier sitting on the reddish oxidized older till. Deformation features in the older till are apparent as well. Hey a couple kilometers of ice does add stress to life ;) From the Geological Society of Iowa's spring field trip near Iowa City.
4
Jim Sutton's profile photo
 
Fascinating! I love this stuff.
Add a comment...

Bob Libra

Shared publicly  - 
 
A good picture is still worth a thousand words. And that ratio may be growing ~ ~ ~
The graffiti and street art on this list is perfect for spreading messages about environmentalism and climate change to a wider audience. It uses simple slogans and provocative images to spread important and inspiring ideas in ways that are easy to remember.
3
Add a comment...

Bob Libra

Shared publicly  - 
 
And so it begins. Next to one of my favorite watering holes in Des Moines, there’s a NY-based NBC news truck and crew, a network producer bopping about, and apparently Andrea Mitchell tucked safely away after doing interviews with the local flora and fauna. It seems like Hillary Clinton's run announcement has popped the cork on Caucus Season in the Cornfields
2
Add a comment...

Bob Libra

Shared publicly  - 
 
The dark side of our shiny high-tech world.
Hidden in an unknown corner of Inner Mongolia is a toxic, nightmarish lake created by our thirst for smartphones, consumer gadgets and green tech, discovers Tim Maughan.
1
Add a comment...
 
In the US midwest, agriculture is the largest impacter of water quality. I'm attending this today.
3
Add a comment...

Bob Libra

Shared publicly  - 
 
The beat goes on. More muzzling of public service science.
Wisconsin's Republican state treasurer on Tuesday successfully banned the state's Board of Commissioners of Public Lands from discussing climate change, according to Bloomberg News. State Treasurer Matt Adamczyk (pictured above), who sits on the public land board, started trying to remove references to climate change from the board's website in January, and he resurfaced the issue on Tuesday at a board meeting.
1
Add a comment...
Have him in circles
401 people
kalle pärg's profile photo
Dennis D. McDonald's profile photo
agilandiswari . Karnagaran's profile photo
Jag Mani's profile photo
Tom “T. Classy” Clos's profile photo
Aleesha Msd's profile photo
Antoni Cisowski's profile photo
Russell Morris's profile photo
余志達's profile photo

Bob Libra

Geology Photos  - 
 
One of our former geologists, who now works for the South Dakota Geo-Survey, dropped into town for the weekend. His plate gave me a hint he was visiting ;)
6
Jim Kundert's profile photoBob Libra's profile photoVicky Veritas's profile photo
5 comments
 
Ahhh, good times, +Bob Libra :-)
Add a comment...

Bob Libra

Shared publicly  - 
 
Gotta love the motive, concept, and execution:
"As a member of Congress, you have three options. 1. You may pretend corruption does not exist. 2. You may pretend to oppose corruption while you sabotage reform. 3. You may actively participate in real reform."
UPDATE 6 p.m.: The Federal Aviation Administration announced it is investigating Wednesday's landing of a small, open-air helicopter on the U.S. Capitol's grounds, and said in a statement that the pilot of the gyrocopter was not in contact with air traffic controllers or authorized to enter restricted airspace.————
1
Add a comment...

Bob Libra

Shared publicly  - 
 
An April morning on the bluffs near Burlington Iowa. Eagles in the air, fossil-rich limestone below the feet, barges and tugs on the Mississippi.
7
1
Justin Wayne Conrainthebamboo's profile photoJim Sutton's profile photo
 
I pull swear I've been near there. Indeed., some serene, inspiring, and unforgettable moments I've shared many sacred moments with friends and loved ones on the roads and paths of the Mighty Mississippi
Add a comment...

Bob Libra

News Links  - 
 
The Four Corners area has sprung a leak.
A methane "hot spot" over the Four Corners region of the U.S. Southwest is undergoing serious scrutiny as scientists work to figure out why levels of the gas in the area are so high. The mysterious methane was first detected from space, via a European Space Agency satellite that can measure this potent greenhouse gas. Researchers reported the discovery in October in the journal Geophysical Research Letters, but couldn't explain where the extra me...
5
1
Tom Nathe's profile photoBob Libra's profile photoaran va an's profile photo
2 comments
 
Yeah - It could be just earth gas, it could be from the coal-bed methane operations, or it could be that bean burrito place in Cortez. Who knows? ;)
Add a comment...

Bob Libra

Shared publicly  - 
 
Thou shalt not kill.
The North Charleston officer, who is white, had said Mr. Scott, an apparently unarmed black man, took his stun gun. But a video shows the officer firing at him eight times.
1
Jody Castle's profile photo
 
Highly disturbing video, but what would the story be without it?
Add a comment...
 
"Hey-la, hey-la, my Bronto's  back". - With apologies to The Angels, 1963.

Next up - Pluto becomes a planet again!  My childhood science icons will live on ;)
7
Harold Asmis's profile photoBob Libra's profile photo
2 comments
 
Yabba Dabba Doo!
Add a comment...
People
Have him in circles
401 people
kalle pärg's profile photo
Dennis D. McDonald's profile photo
agilandiswari . Karnagaran's profile photo
Jag Mani's profile photo
Tom “T. Classy” Clos's profile photo
Aleesha Msd's profile photo
Antoni Cisowski's profile photo
Russell Morris's profile photo
余志達's profile photo
Work
Occupation
Mixing Rocks and Water
Employment
  • Iowa Geological Survey
    State Geologist of Iowa
Places
Map of the places this user has livedMap of the places this user has livedMap of the places this user has lived
Currently
Iowa City, IA
Previously
Sandstone, MN - Superior, WI - Minneapolis, MN - Willmar, MN - Grand Forks, ND - Bloomington, IN - Laramie, WY
Links
Story
Introduction
Looking for Crimes at the Scene of the Clue. Most peeps have that backwards.

During the day I coordinate the earth, water and mapping science of the Iowa Geological and Water Survey. During the night I explore and conjure as I please.
Bragging rights
Bragging is for other people to do about you. However, I can play a mean version of the drum solo from In-A-Gadda-Da-Vida on my face.
Education
  • Indiana University
    Geology
Basic Information
Gender
Male