It also has hollow, tube-shaped inclusions called en echelon veins that are caused by shear stress – evidence of its natural formation. Geologists think that was likely igneous in origin ...

Image caption, Cyclists riding in an echelon formation. A peloton can be made up of a series of echelons and it’s an example of the racers working together for the good of the event. The word ...

"The pilots acted as part of organic pairs and wings, performing flights in the echelon formation at established intervals and distances. After the planes’ combat use, the crews practiced ...

including vehicles following too closely or attempting to pass plows while they operate in echelon formation," reads a media release issued by OPP. "Drivers who attempt to pass or weave between ...