Conglomerate and limestone are both sedimentary rocks but of different kinds, and though it is possible that they could be found in contact with each other, the possibility of finding them in contact is very low because of the difference in the ways the two types of rocks minerals are formed "Minerals, Rocks " Rock Forming Processes").
Unlike limestones, conglomerates are clastic sedimentary rocks, formed in high energy environments, i.e., in high-speed water currents and near terrestrial locations, depositing on river/stream banks and other similar land formations "Minerals, Rocks " Rock Forming Processes"). On the other hand, limestone being biochemical sedimentary rock gets formed in much lower energy environments, i.e., deep marine, stagnant bodies of water making the disposition environment if the two rocks different with limestone often getting deposited a little bit further offshore than the conglomerate which usually gets deposited at the shorelines "Minerals, Rocks " Rock Forming Processes").
Fossils (remains of any living organism) are most often found in limestones and shales. Considering the processes and environments in which sedimentary rocks form, what might be the factors limiting the preservation of fossils? Identify at least 3 factors.
Limestones and shales are Biochemical sedimentary rocks, hence contain remains of living organisms, and for the fossils to remain intact or fossilized they need to remain in low energy environments away from any disturbance, e.g., human activities, low oxygen or an oxygen-free environment, and away from any predators or scavengers. Therefore, preservation of fossils can be limited by some factor such as;
Natural factors, e.g., Earthquakes, waves, winds and currents
Natural disasters often interfere with the environments in which fossils are deposited in, affecting the rock cycles and compositions and positions (Prothero)
Biological agents e.g. Predators and Scavengers
As predators, scavengers and burrowing organisms look for food, they disturb, break up and consume carcasses, destroying the remains of former organisms hence affecting its fossilization (Prothero).
Human Factors
Human activity on land is often a form of disturbance to fossils preservation process because as they use the land e.g. building, they interfere with the fossils settling process hence their preservation.
Works Cited
"Minerals, Rocks " Rock Forming Processes." Indiana University Bloomington, www.indiana.edu/~geol105/1425chap5.htm. Accessed 28 Jan. 2018.
Prothero, Donald R. Bringing Fossils to Life: An Introduction to Paleobiology : an Introduction to Paleobiology. McGraw-Hill, 2004.
