What is sedimentary facies association?

Sedimentary facies, physical, chemical, and biological aspects of a sedimentary bed and the lateral change within sequences of beds of the same geologic age. Sedimentary rocks can be formed only where sediments are deposited long enough to become compacted and cemented into hard beds or strata.

What is a facies association?

Quick Reference. A group of sedimentary facies used to define a particular sedimentary environment. For example, all the facies found in a fluviatile environment may be grouped together to define a fluvial facies association.

What is an example of a sedimentary facies?

These facies types are usually further subdivided, for example, you might refer to a “tan, cross-bedded oolitic limestone facies” or a “shale facies”. The characteristics of the rock unit come from the depositional environment and original composition.

What is a rock facies?

1. n. [Geology] The overall characteristics of a rock unit that reflect its origin and differentiate the unit from others around it. Mineralogy and sedimentary source, fossil content, sedimentary structures and texture distinguish one facies from another. See: depositional environment, lithofacies.

What are facies and facies associations in sedimentary rocks?

Over the decades, sedimentologists have described and interpreted sedimentary rocks and defined generalized facies and facies associations that are characteristic of different depositional environments. These generalized facies and associations are called Facies Models. Each depositional environment or system has its own facies model.

Where are facies associations, depositional environments and…?

Facies associations, depositional environments and stratigraphic framework of the Early Miocene-Pleistocene successions of the Mukah-Balingian Area, Sarawak, Malaysia The sedimentary succession of the Mukah-Balingian area reflects fluvial-floodplain and estuarine setting.

What is the difference between sedimentary facies and sedimentary environment?

It is important to remember that the sedimentary environment is the combination of physical, chemical and biological processes that influence sediment deposition, whereas sedimentary facies are the characteristics of the rocks/sediments after deposition.

Which is the best description of a facies?

The suite of structures forms a facies. A facies (Latin for aspect or appearance) is a body of rock (i.e. a sequence of beds) or sediment marked by a particular combination of compositional, physical and biological structures that distinguish it from bodies of rock/sediment above, below and adjacent to it.