Thunder Knoll
Encyclopedia
Thunder Knoll 16°27′N 80°20′W is a reef knoll
about 18 km in extent and composed of coral sand. It lies 6 km west of the north part of Rosalind Bank
. Depths over this bank range from 11 to 27 m.
Reef knoll
A reef knoll is an immense pile of calcareous material on land that accumulated on the ancient sea floor. At the time of its accumulation it must have had enough structure from organisms such as sponges to have been free-standing and to withstand the sea currents as material accumulated, and was...
about 18 km in extent and composed of coral sand. It lies 6 km west of the north part of Rosalind Bank
Rosalind Bank
Rosalind Bank, also called Rosalinda or Rosa Linda Bank, is a large, completely submerged atoll that lies with its southern extremity 269 km ENE of Cabo Gracias a Dios, at . It is the culmination of an area of coral reef some 300 km long that is stretching out eastward from Cabo Gracias a Dios...
. Depths over this bank range from 11 to 27 m.