Igneous Rocks
Can the igneous rock diabase cool slowly or rapidly?
It can cool both ways! Either extrusively (fast), or intrusively (slow).
What is the parent rock to anthracite coal?
Bituminous coal.
What does it mean when a sedimentary rock is clastic?
It's fragmental.
Which two processes lead to the creation of sedimentary rocks?
Deposition + burial, and compaction and/or cementation.
What's the most common mineral found in igneous rocks?
Plagioclase feldspar.
What are the two categories metamorphic rocks can be identified as?
Foliated and non-foliated.
What grain size would 0.00032 cm be considered?
Clay.
What's the only process that leads to the formation of magma?
The melting of rock leads to the formation of magma.
What mineral is only really found in higher density ingeous rocks?
Pyroxene and/or olivine.
What does it mean when a metamorphic rock has banding?
High-grade metamorphism where the minerals separate into bands/stripes.
What does it mean when a sedimentary rock is bioclastic?
When a sedimentary rock is bioclastic, it's composed of compacted plant/animal remains.
What processes lead to the formation of sediments?
Which type of igneous rocks float in water?
Only vesicular igneous rocks float in water.
Which metamorphic rock only contains mica, and which type of metamorphism is it formed by?
Slate and it's formed by regional metamorphism.
What are the two categories sedimentary rocks can be identified as?
Inorganic land-derived, and chemically and/or organically formed sedimentary rocks.
What are the three types of rocks that can form metamorphic rocks?
Metamorphic, sedimentary and igneous rocks.
Which igneous rock is mafic, has 2 mm crystals, and is only plutonic?
Gabbro.
Which metamorphic rock has a fine texture and has a parent rock of limestone/dolostone?
Marble.
Which sedimentary rock can be composed of cemented shell fragments?
Which two rocks/stages can directly form themselves again?
Metamorphic rocks and sediments.