Igneous rock

relatively low temperature felsic volcanic rocks (Lesher et al., 1986; Gaboury and Pearson, 2008), the observation that many Wabigoon- hosted gold deposits may exhibit characteristics r of epithermal deposits

The Iron Mask project is located at an elevation of ~425 m above mean sea level and within the Canadian Shield that is characterized by subdued topography with rolling hills and numerous lakes and rivers. Vegetation in the area composes a Boreal forest, and includes both coniferous and mixed-wood forests. Conifer tree species include white and black spruce, balsam, jack pine fir, eastern white cedar, and tamarack, while the deciduous (hardwood) species are mainly white birch and poplar (https://www

three layers of rock. The first layer, Precambrian Canadian Shield rocks, is composed of mainly igneous and metamorphic rocks from the Precambrian Eon. This layer is the eldest at approximately 3-0.8x109 years old and is therefore the bottom-most layer (L). Although this layer is largely found in the Canadian Shield region of Ontario, glacial erratics from the Precambrian layer can be found at the Don Valley Brickyard (L). In the GTA, younger sediments and rocks cover the Precambrian rock layer (L). The

concluded that the volcanic rocks were generated from around 1889 to 1860 Ma as island arcs and closed back-arc basins above the south-dipping subduction zone (Niagara fault zone). Granitoid rocks in the terrane, emplaced from around 1870 to 1760 Ma, are mainly granodiorite and tonalite but include gabbro, diorite, and granite. These developed as island arcs above the Eau Pleine shear zone. The Niagara fault zone contains a relict ophiolite, suggesting that the rocks in the Pembine-Wausau terrane

the Lab Exercise, Step 2. Record your answer to Lab Exercise, Step 2, Question 11. How long ago was the igneous rock in rock unit B formed? A. 352 mya B. 380 mya C. 704 mya D. 1408 mya Answer Key: A Question 2 of 31 3.0/ 3.0 Points Record your answer to Lab Exercise, Step 2, Question 12. How long ago was the igneous rock in rock unit C formed? A. 70.4 mya B. 140.8 mya C. 352 mya D. 704 mya

"earthlike"(What is). A geode is a mass of minerals that is created when those minerals seep into air pockets of the rock (Incredible). Since we don’t have the time to observe and experiment on real rocks we will learn how to make our own using eggshells (Helmenstine). Natural Geodes typically have creamy-white or clear crystals, and the outside is dull and is very misleading. On a rare occasion, the rock can have different crystal colors, for example, it could be blue, black, red, and purple (Martha). In

haven been discovered in the McAra area. Copper-zinc (VMS-type?) mineralized zones were discovered in Archean volcanic rocks in the southern part of North Williams Township by Metron Explorations Limited in 1970. The mineralized zone and surrounding area were evaluated with a HLEM survey and drilled with 2 DDHs (totaling 61.3 m) that did not intercept significantly mineralized rocks (Willars, 1971). In 1982, perceived Witwatersrand-type gold deposit potential caused a major staking rush in the area

1) Properties of Phosphorus-31 system: Ideal phosphorus system has Relatively high mass difference between large and small isotope ratio (Large isotope: Small Isotope). It has high natural abundance so, we can easily measure practically. It is also related to Even Magic mass number. This type of system participates in many forms of fractionation. This system should be conservative in the process. Generally, sources are limited to others and quantity. It may be related to the signal such

fossils. The hypothesis is a fossil mold will form after the plaster of paris is set and dried out. The justification for the hypothesis is a cast will form when an animal or plant is covered in sediments. Once the sediments start to harden into a rock state the fossil will become captured and preserved. (Wile, 159-162) II. Materials: 1. Modeling clay or Play-Doh 2. Plaster of paris 3. A paper plate 4. A shell or something with a distinctive design 5. Vaseline or another kind of petroleum jelly

forming process of a folded mountain is unique. Folded mountains have a very long forming process. Centuries of sediments are layered forming large layers of sedimentary rock. The layers become so heavy that horizontal pressure is put on the layers creating folds. The movement of the layers creates faults. Erosion changes and removes rock layers. When enough folding, faulting, and erosion has taken place, folded mountains are formed. A few example of a group of folded mountains are the Appalachians,