Question

rock name\trock type
conglomerate
limestone
basalt
gneiss
obsidian
marble

Explanation:

Conglomerate is a sedimentary rock formed from rounded clasts. Limestone is also a sedimentary rock, mainly composed of calcium carbonate. Basalt is an igneous rock, formed from the cooling and solidification of lava. Gneiss is a metamorphic rock with a banded texture. Obsidian is an igneous rock, a naturally - occurring volcanic glass. Marble is a metamorphic rock, formed from the metamorphism of limestone or dolomite.

Answer:

Conglomerate: Sedimentary Rock
Limestone: Sedimentary Rock
Basalt: Igneous Rock
Gneiss: Metamorphic Rock
Obsidian: Igneous Rock
Marble: Metamorphic Rock