The ten strangest places on earth

RadiomanATL

Senior Member
Joined
Jun 13, 2009
Messages
24,942
Reaction score
4,134
Points
48
Location
Not here
10 Most Alien and Weird Places on Earth


Number 3 is my favorite:
The McMurdo Dry Valleys are a row of valleys in Antarctica located within Victoria Land west of McMurdo Sound. The terrain looks like something not of this Earth; The region includes many interesting geological features including Lake Vida and the Onyx River, Antarctica’s longest river. The valley’s floor occasionally contains a perennially frozen lake with ice several meters thick. It is also one of the world’s most extreme deserts Under the ice, in the extremely salty water, live mysterious simple organisms, a subject of on-going research. Scientists consider the Dry Valleys perhaps an important source of insights into possible extraterrestrial life.

dry-valles1.jpg
 

Terry

Shut the $%$ Up!
Joined
Jan 15, 2009
Messages
5,222
Reaction score
1,136
Points
48
dv685189.jpg


White Sands in New Mexico I found to be fascinating.
 

American Horse

AKA "Mustang"
Joined
Jan 23, 2009
Messages
5,746
Reaction score
908
Points
153
Location
The Hoosier Heartland
Antarctica is the most interesting place on Earth and abounds with geological and temporal anomalies; its Dry Valleys definitely get my vote. I've saved some images which I was at some point going to post here, and you've given my my chance. Here are a couple:

Antarctica: Following are photos and descriptions of rocks artificially changed by wind, temperature changes and erosive agents like sand and salts

dry-valleys-mike-white-565x376.jpg



These are “cavernously weathered boulders” in the Olympus Range, Southern Victoria Land, Antarctica
Elephant Head Ventifact
ElephantHeadventifact.jpg



Below is a boulder field altered by the wind showing ventifacts in all stages of erosion; these are the hardest and most durable of stone, granitics. Notice how the shapes above were produced from cavernous weathering which erodes from below producing similar results time after time
Boulder Field in Bull Pass Antarctica
bull_pass1_big.jpg


Here's how the process works:
"Many granite and dolerite boulders in moderately to old glacial moraines show evidence of cavernous weathering. This form of weathering can develop by either or both of two mechanisms: case hardening and core softening.

In case hardening, silica or other minerals are precipitated into microfractures, strengthening the outer portion of the rock against the attack of other physical and chemical processes.

In core softening, water-assisted chemical and physical weathering dis-integrates individual crystal grains from one another, while the rock still maintains its three-dimensional integrity. Attack by wind action and frost or salt wedging eventually cracks the "shell" of these rocks, and the softer interior materials break down and are removed by wind and gravity"
 
Last edited:

American Horse

AKA "Mustang"
Joined
Jan 23, 2009
Messages
5,746
Reaction score
908
Points
153
Location
The Hoosier Heartland
Here's another ventifact from Antarctica. Notice this large boulder has been hollowed out by cavernous erosion as described in the post above. But notice there is a mysterious and anomalous spherical nodule(?) that has been preserved in situ over what has possibly been many eons of time


VentifactinBullPass.jpg
 

Most reactions - Past 7 days

Forum List

Top