Loess can be identified by its grain size and weight, but these alone may not always be enough. A specific fraction of loess, called the loessial fraction, is crucial for identifying loess accurately. By analyzing samples from different continents, researchers have classified loess based on this fraction. Loess-like deposits have some loess properties but to a lesser extent. The amount of coarse and fine fractions in loess determines if it is clayey or sandy. A triangular chart is used to classify different types of loess. This classification system helps distinguish pure loess from loess-like sediments more clearly.