This is the Burren, found in northwestern Ireland. The oldest rocks visible on the Burren’s surface were formed during the Carboniferous period, between 359 and 299 mya. These limestone rocks formed in shallow, warm, tropical seas south of the equator. It took approximately 20 million years for the limestone to form. About 500 m of limestone is visible on the surface of the Burren. Eventually, the limestone was weathered and dissolved by rainwater to form ancient Karst landscapes. Next, mudstone was formed when the limestone became covered in soil. The mudstones contain particles of volcanic ash from volcanoes actively erupting to the south. Use the history of the Burren to provide evidence of tectonic plate movement. A) The Burren is the site of ancient Karst topography. B) The presence of volcanoes indicates a tectonic plate boundary. C) The Burren is currently located far from the equator and above sea level. D) The deposition of soil over the limestone is the result of repeated glacial movement.