ventifact

The Jake M rock is a ventifact with a volcanic fabric.

The wind direction at the time the ventifact formed will be parallel to grooves or striations cut in the rock.

An example of a Martian ventifact was named Jake Matijevic.

Over time, the bouncing sand grains can erode the lower portions of a ventifact, while leaving a larger less eroded cap.

A Dreikanter is a type of ventifact that typically forms in desert or periglacial environments due to the abrasive action of blowing sand.

It has massive chalk rock formations that are text-book examples of ventifact and which have been created as a result of occasional sandstorm in the area.

'ventifact' means any stone or pebble, shaped, worn, faceted, cut or polished by the abrasive action of windblown dust or sand.

This habitat is variously described on herbarium labels as gravel barrens, sandy-gravel barrens, or sandy till plains covered with ventifact gravel.

The Ventifact does not get its refined shape from hammering at it but by a slow gradual erosion of its present form evolvement by the tide, wind and sand to its new smooth form.