Sedimentary rocks

meter stick, rock hammer, flashlight, bottle of acid, and helmet, we set off to the mine. Located roughly 100 feet below the surface near Grand Rapids, the mine is now a storage facility owned by Michigan Natural Storage. In the mine, we measured the various rock columns to find how large the different sections of gypsum, shale and dolomite were. In addition to measuring the rock types, we took samples using the hammer. After the trip in lab the next week, we looked at the different rock types…

Questions and Answers Rock specimen “A” is identified as marble. This sample had a white to cream color to it, which is an identifying characteristic of marble. Another characteristic is the calcite inclusion; this inclusion is seen by bubbling when exposed to a saturated citric acid solution. When viewed by the unaided eye, the grain and crystal structure is clearly seen. While marble is supposed to be a fairly soft rock, the example provided proved to be fairly durable which was tested…

as precise of a rock name as you can, and an interpretation of the (possible) environment of formation. Quaternary: This is an igneous rock known as Tuff pyroclastic, which is a volcano-clastic rick composed mainly of volcanic ash. This conclusion makes sense as the quick cooling would cause the porous structures. This rock possesses sand to mud sized grains; therefore it is fine grained. This rock has interlocking crystals as well as a predominately mafic structure. This rock contains K…

Analysis of cross bedding and other sedimentary directional indicators imply that the formation was derived from a terrane consisting of igneous, high-grade metamorphic, and sedimentary rocks (Morey 1967). Morey’s study agress with what Ojakangas and Matsch put into the Minnesota’s geology book. Both of these studies state that the sandstone came from the weathering and erosion of the igneous and metamorphic rocks. These igneous, metamorphic and sedimenatry rocks all came from the volcanism…

Adair Park Field Trip was a really great experience where you get to see many different types of rocks and many diverse examples of minerals. This trip happened on Saturday November 1, 2014. Several geology classes went to the field trip for the expedition, with the purpose of learning the different types of each rock and its minerals and also to identify the stones from oldest to youngest. The group leaders of this trip were several professors of geology. Professor Croxen, Garrett, Dr. B, did…

structure made it permissible to be crafted into decorative pieces. The thickness of the Jacobsville Sandstone ranges from 5 to over 15,000 feet total. The location of the sandstone is on the Keweenaw Peninsula to the east of the Keweenaw Fault line. This rock is found along the shoreline of Lake Superior in both Michigan and Ontario but many stratigraphers believe that the Jacobsville stretches out under a good deal of Lake Superior as well. Many geologists believe that the sandstone was…

Red Rocks Park and Amphitheatre Denver residents and music enthusiasts best associate the Red Rock Amphitheatre with concerts, graduations, and other performances. Red Rocks combines awe inspiring sites with naturally acoustic splendor. The Amphitheatre attracts audiences and big name musicians to it stage with ease. However, Red Rocks Amphitheatre has a rich history many do not consider while listening to their favorite band or enjoying the trails around the park. Many important figures and…

fault; the St. Nicolas fault which brought the Manhattan schist. There were observations of boudins of quartz, which are kinetic indicators of movement and stress on the rocks (Flores, 2016). In the Manhattan schist basaltic intrusions were also observed and contact of the intrusion zone. The pegmatites, which are igneous rocks, observed pointed to the Acadian orogeny which followed the…

intrusive magma that made its way through the crust, only to cool and become granite and pegmatites. This magma changed the existing rocks making schists and quartzite. After the inland sea receded erosion dominated the area eroding many layers of rock that had been deposited. A massive uplift rose these rocks to 15,000 feet. The erosion process eventually got rid of the sedimentary layers, exposing the granites and metamorphic knobs that we see today. Imagine if one of these processes did not…

During the Scottish Enlightenment, a period of increased intellectual activity in the 18th and early 19th century, individuals tended to explore multiple disciplines of study (Young, 2016). One prominent Scottish Enlightenment figure was James Hutton, living from 1726 to 1797. During his lifetime he was a lawyer, geologist, chemist, physician, farmer, and naturalist. Hutton, along with other prominent Enlightenment figures, Joseph Black and Adam Smith, founded the Oyster Club. This intellectual…