The Geological History Of The Area

Minerals are what make-up Rocks and rocks are what make up the geology of an area. In this report, we will focus on the geology of Ontario through its rocks. We will look at ten difference rocks samples that have been collected from several different places here in Windsor Ontario including the beach, the river, gravel pits, along highways and roadways as well in parks and campsites. The rocks that were collected are all rocks that have formed right here in Ontario.

It can be argued by some geologists that significantly more time is lost at bedding planes than is recorded by the accumulation of 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 his hypothesis using this collected data in terms of sediment preservation and represented preservation as a function of two modes of geomorphic processes: Magnitude and frequency. The author tested his hypothesis using relatively modern storm events to represent sedimentation, showing how daily processes can distort the geologic record, and by using ancient examples to illustrate how some storms can be preserved in spectacular condition.

The soil and biotic/abiotic features of the park vary greatly depending on the area of park being studied. The volcanic rock that underlies the

The Lynne deposit lies within the early Proterozoic Penokean fold belt of the southern province of the Precambrian Shield. The fold belt is divided into two major terranes in Wisconsin (Sims 1989). The first is the northern Penokean terrane, which contains major oxide facies iron formations and granitic intrusions (DeMatties 1989). The second major terrane, separated from the Penokean terrane by the Niagara fault zone, is the Wisconsin magmatic terrane, characterized by a volcanic island arc-basin assemblage (Sims 1989). This southern terrane lacks major oxide facies iron formations, but contains abundant tonalite-granite intrusions (DeMatties 1989). The Wisconsin magmatic terrane is further subdivided into the northern Pembine-Wausau terrane and the southern Marshfield terrane, which are separated by the Eau Pleine shear zone, a north-dipping subduction zone (Sims 1989).

The youngest of these rocks are dated at about 220,000 years ago. Rhyodacties and quartz latites in the modern caldera area extruded from about 320,000 years ago to 260,000 years ago, and then silica-rich rhyolites at Glass Mountain northeast of the caldera erupted from about 210,000 years ago to 80,000 years ago. The scattered distribution of the initial mafic eruptions indicates that they were erupted from the mantle, while the slightly younger domes and flows were from a deep-crustal source. The youngest rhyolite eruptions erupted at the northeast rim of the caldera at Glass Mountain and were the first activity of the silicic Long Valley magma chamber (Bailey, et. al., 1989).

Questions and charts are from Geoscience Laboratory, 5th ed. (p. 117-130), by T. Freeman, 2009, New York, NY: John Wiley & Sons. Reprinted with permission.

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Neotectonism is express in different ways in the eastern Uplands of north Queensland, in Atherton and Chillagoe territory. Some are identify by magmas dating (e.g. Nulla Volcanic Region) to know youngest ages (Nulla Volcanic Region) while others hold ropy structure (pahoehoe). In Atherton territory, most recent Pleistocene (Eacham) basalt is openly exhibited. Other evidence of neotectonics in Eastern Upland are seen where the Lake George and Shoalhaven reverse fault offset Palaeozoic layers across Miocene.

I have done some additional research on this area and have cone to find out that this is an area where a

Robert Tilling, & American Geological Institute (2000, May). Geotimes - May 2000: Feature Mount St

This area is what anchored North America in the northeast. Covered in a layer of topsoil.

A period of volcanism resulted in igneous intrusions within the Raton Basin-Sierra Grande Uplift Province that was sourced from the upper mantle about 26. 6 billion years ago and is associated with parallel dikes and sills (Higley, 2007). Igneous rocks are common within the Raton Basin and include Tertiary dikes and sills that range in age from 6.7 to 29 5 million years ago (Flores and Bader, 1999). One of the main differences between dikes and sills is that dikes are longer lived magma conduits and sills are features that form when magma is in neutral buoyancy with the surrounding rock (Rooper et al., 2006). These volcanic events are associated with hydrothermal alteration of coal within the basin (Higley, 2007).

They lava beds have a great history and geological background. The good thing about this is it is crossing two classes, so you can learn about two instead of just one. In the passage,"Lava Beds National Monument," the author states, "But this "Secret" park of volcanic rock and underground caves is full of history and geologic wonder," The things that makes this park so special is that this secret park is that it use to be covered in lava. The other thing was that the caves and tubes made volcanic eruptions over the last half million years. The history parts comes in when it was covered in lava and the geological part comes

All of the volcanic and metasedimentary rocks are metamorphosed, whose grades are extending from greenschist to upper amphibolite, characterized by low-pressure but high-temperature (Isachsen & Bowring, 1994). The influence of basement fracture zone is reflected in the homoclinal and abruptly alternated trends of the volcanic belts, which is more frequently found in the southwestern domain of the province, while north belts show angular patterns (Fyson & Helmstaedt, 1988; Padgham,1992; Padgham & Fyson, 1992). Except for the sharp dips of the volcanics, regional-scale folds, foliations and cleavages over several successions shown in the metasedimentary rocks are studied to understand the deformation and metamorphism (Isachsen & Bowring, 1994). Fyson & Helmstaedt (1988) compare three major types of folds which are ranked by their ages and sizes from oldest, most extensive F0 to minor-sized, cleavage-foliation-associated S3 folds with intermediate type F1 between them and they suggest that the parallel trend and they suggest both foliation and folds are results of syntectonic

From here the whole valley could be seen and it was easily observed where the glaciers cut into the valley. The second site was a field across from the street from the mudboil. This site was underneath where the slide happened. It used to be farm land, but since the slide the soil has not been able to support anything but invasive species. Additionally, there are now standing pools of salt water in the field that were not there before. Walking through the field the high sulfur content can easily be smelled, which is a result of the slide. The valley face now has a steep grade that was left there after the loss of soil from the slide. The third site was the Onondaga Creek. The creek is extremely turbid due to a high amount of sediment carried by the water. This sediment is lacustrine material, mostly clay, and gets deposited further downstream. The fourth site was a view of the alluvial fan. This is a cone shaped fan that spreads out water and debris. It gives an idea of where the water and soil were forced to go during the slide. The final site was the mudboil and its connection to the Onondaga Creek. Walking into the mudboil there are recessional rings, which are evidence of material slipping and causing an increase in pressure. There is some moving water, but it is from a lateral source. The mudboil itself is formed by a vertical poll of water. The ground in the mudboil looks solid but is actually soft and unsupportive. If there was a need to release pressure there would have been a small eruption of water in the mudboil. The water coming out would contain sediments and drains towards the