Geology Science

At first glance, Maxixe beryl can easily be mistaken for an unusually dark aquamarine. Both belong to the beryl family, both share the same...

Star ruby is a rare variety of ruby that displays a striking star-shaped optical effect known as asterism. Under a concentrated light source, a...

Some sapphires are valued primarily for their color.Others contain an optical phenomenon that transforms the entire appearance of the gemstone.Under a concentrated light source,...

Earth is generally referred to as the Blue Planet, but within its familiar landscapes there are places so alien that they can easily be...

Fossils are more than ancient remains—they are windows into vanished worlds. Each fossil preserves a moment in time, capturing organisms that lived millions of...

Nature has been shaping the Earth's surface for billions of years. However, this shaping is not random, chaotic or unplanned. On the contrary; factors...

Quartz and calcite are two of the most common minerals on Earth, and in some specimens they can be surprisingly easy to confuse.A colorless...

Brachiopods, often referred to as "lampshells," are a group of marine invertebrates that have existed on Earth for over half a billion years. They...

Sedimentary structures and textures refer to the physical features and arrangements of sedimentary rocks that provide information about the conditions in which they were deposited. These structures and textures can provide important clues about the nature of the depositional environment, the nature of the sediment transport process, and the history of the sedimentary basin. They are used by geologists to interpret the history and evolution of sedimentary deposits. Sedimentary structures can range in scale from millimeters to meters or more, and include features such as bedding planes, cross bedding, ripple marks, mud cracks, and fossils, among others. Sedimentary textures refer to the size, shape, sorting, and arrangement of sediment grains, and can include features such as grain size, shape, and orientation, as well as sorting and packing of the grains within the sedimentary rock.