OBJECTIVE FORESTRY

Detailed explanation-1: -Sandstone is not an organic sedimentary rock. It is just a sedimentary rock which is composed of sand-sized grains of either organic materials, rock, or mineral. Organic sedimentary rocks are those which are formed from lithification and accumulation of organic debris such as roots, leaves, or animal material.

Detailed explanation-2: -The most common types include coal, lignite, oil shale, or black shale. The organic material may be disseminated throughout the rock giving it a uniform dark color, and/or it may be present as discrete occurrences of tar, bitumen, asphalt, petroleum, coal or carbonaceous material.

Detailed explanation-3: -Organic Sedimentary Rocks include Chalk, Coal, and Limestone with Fossils.

Detailed explanation-4: -We classify such rocks as organic sedimentary rocks, separate from chemical and clastic sedimentary rocks. Examples are limestones formed from shell or skeletal remains, coquina (a sedimentary rock made of shell fragments), diatomite (a sedimentary rock made of the remains of diatoms), and coal.

Detailed explanation-5: -Organic sedimentary rocks form from the accumulation of plant or animal debris. Examples include: chalk, coal, diatomite, some dolomites, and some limestones.