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Relative dating Cross-cutting relations can be used to determine the relative ages of rock strata and other geological structures. Methods for relative dating were developed when geology first emerged as a natural science. Geologists still use the following principles today as a means to provide information about geologic history and the timing of geologic events. The principle of uniformitarianism states that the geologic processes observed in operation that modify the Earth’s crust at present have worked in much the same way over geologic time. In geology, when an igneous intrusion cuts across a formation of sedimentary rock , it can be determined that the igneous intrusion is younger than the sedimentary rock. Different types of intrusions include stocks, laccoliths , batholiths , sills and dikes. The principle of cross-cutting relationships pertains to the formation of faults and the age of the sequences through which they cut. Faults are younger than the rocks they cut; accordingly, if a fault is found that penetrates some formations but not those on top of it, then the formations that were cut are older than the fault, and the ones that are not cut must be younger than the fault.

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By measuring the reflectance of light from the surface of a semiconductor wafer, the index of refraction n and the extinction Coefficient k can be determined via the Forouhi-Bloomer dispersion equations.

This section does not cite any sources. Please help improve this section by adding citations to reliable sources. Unsourced material may be challenged and removed. November Learn how and when to remove this template message Infrared radiation can be used as a deliberate heating source. For example, it is used in infrared saunas to heat the occupants. It may also be used in other heating applications, such as to remove ice from the wings of aircraft de-icing.

Infrared heating is also becoming more popular in industrial manufacturing processes, e. In these applications, infrared heaters replace convection ovens and contact heating. Efficiency is achieved by matching the wavelength of the infrared heater to the absorption characteristics of the material.

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Filed under Pagadian City The Philippines, being a country archipelago of islands and seas, have naturally wonderful beaches, some of which are famous the world over. Beaches like Puerto Galera, Boracay, and the various beaches in Cebu rake in tourists from around the world all year round because of their pristine and cool blue waters and fine, white-sand shores. However, if one will just look around more, they will find that there are other less-known but equally beautiful beach spots in other parts of the Philippines.

In Pagadian, in particular, there are beaches and islands that will make one believe that there is such a thing as a secluded paradise on Earth. A nice place to start would be the Dao-Dao Islands some seven to ten minutes away from the seaport, when riding a motorboat. It is a rather big island, with an area size of about 1. The coral reefs are artificially made, but the whole place is very much ideal for swimming, fishing, and boating.

During low tides, a smaller, more undeveloped island appears and like the rest, is also suitable for fishing and swimming. There is also the White Beach that, as its name suggests, is a stretch of white sand beach just minutes southeast of the seaport. Again, it can be reached via motorboat.

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Sub-specialities of geology may distinguish endogenous and exogenous geology.

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Pagadian City Beach Attractions

Radiocarbon dating is used for geologically young materials containing organic carbon.

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Hot land surfaces will show up as dark-grey or black.

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