stone articles
What is the general geological term for any broken piece of rock or mineral found in a sedimentary setting?
What particle size is generally implied when a geologist uses the term 'grain' instead of 'clast'?
On what primary physical characteristic are clastic sedimentary rocks fundamentally classified?
According to the provided size guide, what approximate size range defines fragments classified as Sand?
What is a fragment called if it is composed of multiple interlocking mineral grains from an original parent rock?
If a sandstone is rich in lithic fragments instead of individual mineral grains, what does this suggest about the source area?
Which term describes a coarse clastic rock composed of fragments that possess sharp, jagged edges?
What process is necessary for angular clasts to become the rounded fragments found in a conglomerate?
What general term is sometimes used for any coarse-grained clastic rock, encompassing both conglomerates and breccias?
What is the term for pieces of rock ejected during a volcanic eruption that compose rocks like tuff?
The comprehensive identification of grain size, angularity, and lithic type is used to determine what aspect of the sedimentary material?
What is the minimum diameter defining a rock fragment as a boulder?
What is the typical diameter range for a pebble?
What primarily differentiates the term 'gravel' from a 'pebble'?
What is the size range in millimeters typically assigned to sand particles?
What is the size range in millimeters used to classify silt particles?
What particle size defines the material classified as clay?
What term broadly describes the collection of sand, silt, and clay?
Do the terms pebble, sand, and silt primarily describe the material's composition or its physical dimensions?
What key feature distinguishes a Breccia from a Conglomerate?
How does silt typically feel when rubbed between the fingers compared to sand?
For a civil engineer assessing construction aggregate, which factor is often more important than rock provenance?