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.
How to Find My Default Browser. Many computer users have at least two browsers installed on their systems. Because browsers are free and easy to download, users tend to shop around and use the one they are most comfortable with. If you are one of those people and need to determine your default browser, Windows makes it easy to do so.