Formation and Mode of Preservation of Fossils

Formation and Mode of Preservation of Fossils

Formation of Fossil: A fossil is the preserved remains or terraces of a dead organism. Fossils can be formed in several ways. Four different ways by which fossils can form are explained below: Permineralization occurs when dissolved minerals carried by groundwater...
Fabric in Sedimentary Rocks: Definition, Types, and Importance

Fabric in Sedimentary Rocks: Definition, Types, and Importance

What is Fabric: Fabric means the orientation of grains. It is a property of grain aggregates. Any non-spherical object has an orientation. Features that are larger than single grains but smaller than sedimental structures. Types of Fabric: Generally, there are two...
Types of Evolution

Types of Evolution

Types of evolution shape how species change over time. Divergent evolution splits one species into two, convergent evolution causes unrelated species to develop similar traits, and parallel evolution leads separate species in the same environment to evolve alike....
Sphericity: Definition, Measurement, and Importance

Sphericity: Definition, Measurement, and Importance

Sphericity measures how closely a particle’s shape resembles a sphere. It helps in understanding grain durability, transport history, and geological processes. A perfect sphere has a sphericity of 1.00, while other shapes have lower values. This concept is crucial in...
Method of grain size

Method of grain size

Grain size classifies sedimentary particles from coarse gravel to fine clay using scales like Udden’s and Atterberg’s. Analysis methods include direct measurement, sieving, microscopy, and settling tubes, based on particle size. Understanding grain size helps in...