Calcite

The Colosseum otherwise known as the Flavian Amphitheatre, started construction in 70 A.D. and took an estimated 10 years to complete, finishing in 80 A.D. The Colosseum served as a host for sporting events for the roman population. The two rulers accredited for the Colosseum were the two roman emperors, Vespasian and Titus (Vespasian’s son). Vespasian’s vision for the Colosseum was to build the greatest arena ever, seen in the Roman world. But how has this arena’s design stayed similar for…

The Grand Canyon is a steep-sided canyon carved by the Colorado River in the state of Arizona in the United States. It is contained within and managed by Grand Canyon National Park, the Kaibab National Forest, Grand Canyon-Parashant National Monument, the Hualapai Tribal Nation, the Havasupai people and the Navajo Nation. President Theodore Roosevelt was a major proponent of preservation of the Grand Canyon area, and visited it on numerous occasions to hunt and enjoy the scenery. The Grand…

wastewater, and urban storm water. Some of the chemical characteristics of water include pH, dissolved oxygen, and essential nutrients. Water pH: The pH level of water is influenced by the soil and rocks in the watershed and lake bed. Examples include calcite (CaCO3) which will release carbonates (CO32-) increasing the water’s pH, and minerals with sulfide that form sulfuric acid (H2SO4) and lower the pH (Caine, et al., 1987). From the Watershed Nature centre, it can be deduced that the PH of…

from tiny pieces of paintings from the walls. The results show that the artworks were made around 32,000 years ago which makes them the oldest and almost twice the age of any paintings ever discovered (Herzog, 2010). Furthermore, there is a layer of calcite and concretions over some paintings that take thousands of years to grow. Archeologists consider…

Compound eyes also known as Arthropod eyes, can be traced back to an arthropod called trilobite. These ancestors didn 't have complex lenses like those of today but instead, their eyes and lenses were made of the same rock that made their skin - calcite. Compound eyes today contain many ommatidia (singular: ommatidium) which consist of a corneal lens, a crystalline cone, a rhabdom (a light-sensitive receptor), and a retinula cell (a sense cell). Originally there was only one ommatidium but…

Trans-Pecos Province Magma Types Nathanial Matis 01/12/2014 Trans-Pecos Province Magma Types Nathanial Matis Abstract The Cretaceous was the starting point when the Laramide Orogeny began to fault and fold as a result of tectonic activity which pushed the Farallon plate into the North American plate forcing the subduction of the Farallon. This subduction caused the plate to melt and form magma that either formed laccoliths, or intruded country rock with different igneous compositions. These…

Solemyoida and Praecardoida. The main feature of this subclass same with previous subclasses except the absence of tooth (dysodont). Subclass Pteriomorpha includes order Arcoida, Mytiloida and Pterioida which is heterogeneous. The shell made from calcites or aragonite. Paleoheterodonta as the fourth subclasses have mostly aragonitic basic shells includes order Modiomorphoida, Unioidia, and Trigonoida. Order Unioidia is known as freshwater bivalves. The fifth subclass, Heterodonta, mostly has a…

the Prehistoric, they extract the paint from natural materials. They used minerals, limonite, and hematite, red ocher, yellow ocher, and number, also they use charcoal from the fire (carbon black), burnt bones (bone black) and white from grounded calcite (lime white). Africa also had ancient cave painting artist. The prehistoric color palette used in African cave painting by Bushmen artists consisted mostly of earth pigments. reds and browns from bole or hematite; yellows, orange, and reds from…

Starting with the materials, most of the main materials used to create art came either from the Nile or from its surroundings. One of those materials were stones. The majority of soft stones available were limestone, calcite, sandstone, schist, and greywacke. In addition, harder stones such as quartzite, diorite, granodiorite, granite, and basalt were common. Stone was a major building material for temples, bowls, statues and sculptures. In many cases, Egyptians chose…

growing embryo that have a thickness, whole size, and shell pores that vary from species to species. It is a ceramic material showing texture gradient and different kinds of eggshell have a common mineral content Calcium Carbonate in the form of calcites and don’t have any type of cells in it. Eggshells have different maculation from different species of bird, which have different functions due to the pigments like Porphyrin and Biliviridin derived from haem, which can be viewed by staining.…