A dyke (or dike) in geology is a type of later vertical rock between older layers of rock. Technically, it is any geologic body which cuts across:1  flat wall rock structures, such as bedding. dyke (or dike) in geology is a type of later vertical rock between older layers of rock. Technically, it is any geologic body which cuts across: 1  flat wall rock structures, such as bedding.
Another example would be the âdefault browserâ on your computer. Windows PCs come with Internet Explorer (the blue âEâ icon) as the default browser, just as Apple includes their own Safari browser as the default on their Mac computers.
No matter what version of IE you are using, the Internet Options window is the answer to setting it as your default browser. You would need to go to, and then to Programs. There youâll find the button that will set IE as default browser. Click on it, click OK and youâre done! That was about manually setting Firefox, Chrome or IE as the default browser. Tomorrow, we will take up Safari and Opera, and see how to change default browser in that case.