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.
Default Browser in Mac OS. Google Chrome and Mozilla Firefox are third-party browsers which are packed with setting of âSet default browserâ. For altering this setting you need to open a browser. Yosemite is the latest browser in which this issue has been eliminated. It is loaded with OS level setting with the default browser choice.