Once their mineral composition changes, the rocks are considered metamorphic, with examples including phyllite, schist, quartzite and marble. Igneous and metamorphic rocks on Earth's surface ...

PETALING JAYA: Human activity, the weather and erosion of the embankment soil below the surface were the main causes of the ...

Domenic Torzi and Tracy Matthews, former Adelaide Plains residents, searched for a number of years before finding a block at Mount McKenzie in the Eden Valley. The block they chose is in a hollow; the ...