Is limestone a igneous rock?
no it is a sedimentary rock
Limestone is not classed as either a granitoid or a sandstone rock. Limestone is a sedimentary rock, either chemically precipitated or bioclastic in origin. Granite is a plutonic igneous rock, and sandstone, although sedimentary, is formed from the cementation of sand-sized particles of eroded rock.
What type of rock would most likely have seashells in it a sedimentary rock a igneous rock a conglomerate rock or a metamorphic rock?
Granite does not turn into limestone. Granite is an igneous rock originating from volcanic activity. Limestone is a sedimentary rock laid down in the oceans millions of years ago. Limestone does turn into marble when subjected to huge pressures and heat. It is found areas with a lot of seismic activity like Itlay and Turkey.