Sedimentary rock

Type of Rock The rock coquina is originally a sedimentary rock. Sedimentary rocks are made up of sediments. The sediments are formed by the mechanical or chemical activities of the natural activities like running water, blowing wind, glaciers etc. this which causes disintegration and decomposition of the pre-existing rocks. The products of decay are transported to some depositional sites by the natural agencies, where they get deposited and with subsequent compaction form sedimentary rocks (Hefferan

1. Analysis of the oldest sedimentary rocks provides evidence for the origin of life List the atmospheric gases believed to have existed on early earth The atmospheric gases believed to have existed on early earth are: water vapour hydrogen methane ammonia Describe the hypothesised conditions and environment of early Earth Early Earth is predicted to have been a very hostile environment. Due to high levels of tectonic activity, there were thought to have been many volcanic eruptions. These eruptions

1. Sedimentary rocks are made from different pieces of rocks and sediments. This happened through the process of erosion and weathering. Every now and then animals get buried under sediments and formed with the rock. As the tissues decay, the bone stay preserved in the rock because of the carbon that release from the corpse. Sedimentary rocks can tell scientists about the fossil's habitat by the size and formation of the rock. For example, one direction ripple marks indicate that the rock formed

clearly shows sequential change in organisms throughout time by providing a starting point and in many cases transitional fossils as benchmarks for comparison. Sedimentary rock is crucial to this process as it is what cements organisms in time at their time of death. Sedimentary rock is common on Earth and formed by the weathering of older rocks. As this weathering occurs organisms that have died are buried in the sediments produced and preserved as

sediment and its later lithification into a sedimentary rock. In the present paper, the continuity of the sedimentary record is investigated. It is hypothesized that sedimentary strata preserved predominately records episodic sedimentation events and gaps represented by bedding planes symbolize more time than the preserved strata. The incompleteness of the geologic record and the role of rare events was studied using data gathered from a variety of sedimentary outcrops and cores. The author addressed

including its sedimentary rock layers, its canyons, its alcoves utilized by ancient people and how these alcoves were formed. Mesa Verde National Park is located in the southwest corner of Colorado, close to the Four Corners area, on top of a high mesa overlooking the Mancos River (Harris et al. 2004). The park, covering 81 square miles, consists of several main sedimentary formations that are characteristic to the park (Encyclopedia Britannica 2015). Canyons are carved into the sedimentary rock, with the

component of sedimentary rocks. It is common and is found everywhere. Calcite is used as a construction material, pharmaceutical, agricultural soil treatment and

exhibiting different time periods throughout Eastern Oregon's history. 40 million years ago,during the Eocene epoch, the creation of painted rocks began. At the time, weather condition were tropical/sun-tropical. This is validated by the consistent ash fall in the area which fossilized organisms like palm trees, avocados and crocodiles.This time is when the rocks/the Clarno formation were created throughout the Oligocene epoch, climate became temperate. Starting the Miocene epoch, climate changed dramatically

Calcite: a white or colorless mineral consisting of calcium carbonate. It is a major constituent of sedimentary rocks such as limestone, marble, and chalk, can occur in crystalline form (as in Iceland spar), and may be deposited in caves to form stalactites and stalagmites Coral Reefs: A structure of calcite skeletons built up by coral animals in warm, shallow ocean water Limestone: a hard sedimentary

of the following is a diagnostic feature of Specimen #17?   A.It fizzes when tested with acid.    B.It is a very coarse-grained sedimentary rock.  Correct  C.It is a fissile sedimentary rock.    D.It is obviously the product of a high-energy depositional environment.  Answer Key: C   Feedback: The correct answer is C. It is a fissile sedimentary rock.     Question 17 of 33 3.03/ 3.0303 Points Specimen #17 is   A.conglomerate.    B.gyprock.    C.quartz chert.  Correct